Version 1.75

Comments

.gitattributes

@@ -0,0 +1,30 @@
+* text=auto
+
+*.c text
+*.cpp text
+*.h text
+*.m text
+*.mm text
+*.md text
+*.txt text
+*.html text
+*.bat text
+*.frag text
+*.vert text
+*.mkb text
+*.icf text
+
+*.sln text eol=crlf
+*.vcxproj text eol=crlf
+*.vcxproj.filters text eol=crlf
+*.natvis text eol=crlf
+
+Makefile text eol=lf
+*.sh text eol=lf
+*.pbxproj text eol=lf
+*.storyboard text eol=lf
+*.plist text eol=lf
+
+*.png binary
+*.ttf binary
+*.lib binary

.github/issue_template.md

@@ -1,16 +1,16 @@
-(Click "Preview" to turn any http URL into a clickable link)
+(Click "Preview" above ^ to turn URL into clickable links)
 
-1. PLEASE CAREFULLY READ:
-https://github.com/ocornut/imgui/issues/2261
+1. PLEASE CAREFULLY READ: [FAQ](https://github.com/ocornut/imgui/blob/master/docs/FAQ.md)
 
-2. IF YOU ARE HAVING AN ISSUE COMPILING/LINKING/RUNNING/LOADING FONTS, please post on the "Getting Started" Discourse forum:
-https://discourse.dearimgui.org
+2. PLEASE CAREFULLY READ: [Issue Submitting Guidelines](https://github.com/ocornut/imgui/issues/2261)
 
-3. PLEASE MAKE SURE that you have: read the FAQ in imgui.cpp; explored the contents of `ShowDemoWindow()` including the Examples menu; searched among Issues; used your IDE to search for keywords in all sources and text files; and read the link provided in (1).
+3. FOR FIRST-TIME USERS ISSUES COMPILING/LINKING/RUNNING/LOADING FONTS,  please use the [Discord server](http://discord.dearimgui.org).
 
-4. Be mindful that messages are being sent to the e-mail box of "Watching" users. Try to proof-read your messages before sending them. Edits are not seen by those users.
+4. PLEASE MAKE SURE that you have: read the FAQ; explored the contents of `ShowDemoWindow()` including the Examples menu; searched among Issues; used your IDE to search for keywords in all sources and text files; and read the link provided in (1) (2).
 
-5. Delete points 1-5 and PLEASE FILL THE TEMPLATE BELOW before submitting your issue.
+5. Be mindful that messages are being sent to the e-mail box of "Watching" users. Try to proof-read your messages before sending them. Edits are not seen by those users.
+
+6. Delete points 1-6 and PLEASE FILL THE TEMPLATE BELOW before submitting your issue.
 
 Thank you!
 
@@ -39,7 +39,7 @@ XXX _(you can drag files here)_
 
 **Standalone, minimal, complete and verifiable example:** _(see https://github.com/ocornut/imgui/issues/2261)_
 ```
-// Please do not forget this!
+// Here's some code anyone can copy and paste to reproduce your issue
 ImGui::Begin("Example Bug");
 MoreCodeToExplainMyIssue();
 ImGui::End();

.github/workflows/build.yml

@@ -0,0 +1,322 @@
+name: build
+
+on:
+  push: {}
+  pull_request: {}
+  schedule:
+    - cron:  '0 9 * * *'
+
+jobs:
+  Windows:
+    runs-on: windows-2019
+    env:
+      VS_PATH: C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\
+      MSBUILD_PATH: C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\MSBuild\Current\Bin\
+      # Until gh-actions allow us to use env variables inside other env variables (because we need %GITHUB_WORKSPACE%) we have to use relative path to imgui/examples/example_name directory.
+      SDL2_DIR: ..\..\SDL2-devel-2.0.10-VC\SDL2-2.0.10\
+      VULKAN_SDK: ..\..\vulkan-sdk-1.1.121.2\
+    steps:
+      - uses: actions/checkout@v1
+        with:
+          fetch-depth: 1
+
+      - name: Install Dependencies
+        shell: powershell
+        run: |
+          Invoke-WebRequest -Uri "https://www.libsdl.org/release/SDL2-devel-2.0.10-VC.zip" -OutFile "SDL2-devel-2.0.10-VC.zip"
+          Expand-Archive -Path SDL2-devel-2.0.10-VC.zip
+          Invoke-WebRequest -Uri "https://github.com/ocornut/imgui/files/3789205/vulkan-sdk-1.1.121.2.zip" -OutFile vulkan-sdk-1.1.121.2.zip
+          Expand-Archive -Path vulkan-sdk-1.1.121.2.zip
+
+      - name: Fix Projects
+        shell: powershell
+        run: |
+          # WARNING: This will need updating if toolset/sdk change in project files!
+          gci -recurse -filter "*.vcxproj" | ForEach-Object {
+            # Fix SDK and toolset for most samples.
+            (Get-Content $_.FullName) -Replace "<PlatformToolset>v110</PlatformToolset>","<PlatformToolset>v142</PlatformToolset>" | Set-Content -Path $_.FullName
+            (Get-Content $_.FullName) -Replace "<WindowsTargetPlatformVersion>8.1</WindowsTargetPlatformVersion>","<WindowsTargetPlatformVersion>10.0.18362.0</WindowsTargetPlatformVersion>" | Set-Content -Path $_.FullName
+            # Fix SDK and toolset for samples that require newer SDK/toolset. At the moment it is only dx12.
+            (Get-Content $_.FullName) -Replace "<PlatformToolset>v140</PlatformToolset>","<PlatformToolset>v142</PlatformToolset>" | Set-Content -Path $_.FullName
+            (Get-Content $_.FullName) -Replace "<WindowsTargetPlatformVersion>10.0.14393.0</WindowsTargetPlatformVersion>","<WindowsTargetPlatformVersion>10.0.18362.0</WindowsTargetPlatformVersion>" | Set-Content -Path $_.FullName
+          }
+
+      # Not using matrix here because it would inflate job count too much. Check out and setup is done for every job and that makes build times way too long.
+      - name: Build example_null (extra warnings, mingw 64-bit)
+        run: mingw32-make -C examples/example_null EXTRA_WARNINGS=1
+
+      - name: Build example_null (extra warnings, msvc 64-bit)
+        shell: cmd
+        run: |
+          cd examples\example_null
+          "%VS_PATH%\VC\Auxiliary\Build\vcvarsall.bat" x64 && .\build_win32.bat /W4
+
+      - name: Build example_null (single file build)
+        shell: bash
+        run: |
+          echo '#define IMGUI_IMPLEMENTATION'                    >> example_single_file.cpp
+          echo '#include "misc/single_file/imgui_single_file.h"' >> example_single_file.cpp
+          echo '#include "examples/example_null/main.cpp"'       >> example_single_file.cpp
+          g++ -I. -Wall -Wformat -o example_single_file.exe example_single_file.cpp
+
+      - name: Build Win32 example_glfw_opengl2
+        shell: cmd
+        run: '"%MSBUILD_PATH%\MSBuild.exe" examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj /p:Platform=Win32 /p:Configuration=Release'
+
+      - name: Build Win32 example_glfw_opengl3
+        shell: cmd
+        run: '"%MSBUILD_PATH%\MSBuild.exe" examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj /p:Platform=Win32 /p:Configuration=Release'
+        if: github.event_name == 'schedule'
+
+      - name: Build Win32 example_glfw_vulkan
+        shell: cmd
+        run: '"%MSBUILD_PATH%\MSBuild.exe" examples/example_glfw_vulkan/example_glfw_vulkan.vcxproj /p:Platform=Win32 /p:Configuration=Release'
+        if: github.event_name == 'schedule'
+
+      - name: Build Win32 example_sdl_vulkan
+        shell: cmd
+        run: '"%MSBUILD_PATH%\MSBuild.exe" examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj /p:Platform=Win32 /p:Configuration=Release'
+        if: github.event_name == 'schedule'
+
+      - name: Build Win32 example_sdl_opengl2
+        shell: cmd
+        run: '"%MSBUILD_PATH%\MSBuild.exe" examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj /p:Platform=Win32 /p:Configuration=Release'
+        if: github.event_name == 'schedule'
+
+      - name: Build Win32 example_sdl_opengl3
+        shell: cmd
+        run: '"%MSBUILD_PATH%\MSBuild.exe" examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj /p:Platform=Win32 /p:Configuration=Release'
+
+      - name: Build Win32 example_sdl_directx11
+        shell: cmd
+        run: '"%MSBUILD_PATH%\MSBuild.exe" examples/example_sdl_directx11/example_sdl_directx11.vcxproj /p:Platform=Win32 /p:Configuration=Release'
+        if: github.event_name == 'schedule'
+
+      - name: Build Win32 example_win32_directx9
+        shell: cmd
+        run: '"%MSBUILD_PATH%\MSBuild.exe" examples/example_win32_directx9/example_win32_directx9.vcxproj /p:Platform=Win32 /p:Configuration=Release'
+
+      - name: Build Win32 example_win32_directx10
+        shell: cmd
+        run: '"%MSBUILD_PATH%\MSBuild.exe" examples/example_win32_directx10/example_win32_directx10.vcxproj /p:Platform=Win32 /p:Configuration=Release'
+
+      - name: Build Win32 example_win32_directx11
+        shell: cmd
+        run: '"%MSBUILD_PATH%\MSBuild.exe" examples/example_win32_directx11/example_win32_directx11.vcxproj /p:Platform=Win32 /p:Configuration=Release'
+        if: github.event_name == 'schedule'
+
+      - name: Build x64 example_glfw_opengl2
+        shell: cmd
+        run: '"%MSBUILD_PATH%\MSBuild.exe" examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj /p:Platform=x64 /p:Configuration=Release'
+        if: github.event_name == 'schedule'
+
+      - name: Build x64 example_glfw_opengl3
+        shell: cmd
+        run: '"%MSBUILD_PATH%\MSBuild.exe" examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj /p:Platform=x64 /p:Configuration=Release'
+
+      - name: Build x64 example_glfw_vulkan
+        shell: cmd
+        run: '"%MSBUILD_PATH%\MSBuild.exe" examples/example_glfw_vulkan/example_glfw_vulkan.vcxproj /p:Platform=x64 /p:Configuration=Release'
+
+      - name: Build x64 example_sdl_vulkan
+        shell: cmd
+        run: '"%MSBUILD_PATH%\MSBuild.exe" examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj /p:Platform=x64 /p:Configuration=Release'
+        if: github.event_name == 'schedule'
+
+      - name: Build x64 example_sdl_opengl2
+        shell: cmd
+        run: '"%MSBUILD_PATH%\MSBuild.exe" examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj /p:Platform=x64 /p:Configuration=Release'
+        if: github.event_name == 'schedule'
+
+      - name: Build x64 example_sdl_opengl3
+        shell: cmd
+        run: '"%MSBUILD_PATH%\MSBuild.exe" examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj /p:Platform=x64 /p:Configuration=Release'
+        if: github.event_name == 'schedule'
+
+      - name: Build x64 example_sdl_directx11
+        shell: cmd
+        run: '"%MSBUILD_PATH%\MSBuild.exe" examples/example_sdl_directx11/example_sdl_directx11.vcxproj /p:Platform=x64 /p:Configuration=Release'
+
+      - name: Build x64 example_win32_directx9
+        shell: cmd
+        run: '"%MSBUILD_PATH%\MSBuild.exe" examples/example_win32_directx9/example_win32_directx9.vcxproj /p:Platform=x64 /p:Configuration=Release'
+        if: github.event_name == 'schedule'
+
+      - name: Build x64 example_win32_directx10
+        shell: cmd
+        run: '"%MSBUILD_PATH%\MSBuild.exe" examples/example_win32_directx10/example_win32_directx10.vcxproj /p:Platform=x64 /p:Configuration=Release'
+        if: github.event_name == 'schedule'
+
+      - name: Build x64 example_win32_directx11
+        shell: cmd
+        run: '"%MSBUILD_PATH%\MSBuild.exe" examples/example_win32_directx11/example_win32_directx11.vcxproj /p:Platform=x64 /p:Configuration=Release'
+        if: github.event_name == 'schedule'
+
+      - name: Build x64 example_win32_directx12
+        shell: cmd
+        run: '"%MSBUILD_PATH%\MSBuild.exe" examples/example_win32_directx12/example_win32_directx12.vcxproj /p:Platform=x64 /p:Configuration=Release'
+
+  Linux:
+    runs-on: ubuntu-18.04
+    steps:
+    - uses: actions/checkout@v1
+      with:
+        fetch-depth: 1
+
+    - name: Install Dependencies
+      run: |
+        sudo apt-get update
+        sudo apt-get install -y libglfw3-dev libsdl2-dev gcc-multilib g++-multilib
+
+    - name: Build example_null (extra warnings, gcc 32-bit)
+      run: |
+        make -C examples/example_null clean
+        CXXFLAGS="$CXXFLAGS -m32" make -C examples/example_null EXTRA_WARNINGS=1
+
+    - name: Build example_null (extra warnings, gcc 64-bit)
+      run: |
+        make -C examples/example_null clean
+        CXXFLAGS="$CXXFLAGS -m64" make -C examples/example_null EXTRA_WARNINGS=1
+
+    - name: Build example_null (extra warnings, clang 32-bit)
+      run: |
+        make -C examples/example_null clean
+        CXXFLAGS="$CXXFLAGS -m32" CXX=clang++ make -C examples/example_null EXTRA_WARNINGS=1
+
+    - name: Build example_null (extra warnings, clang 64-bit)
+      run: |
+        make -C examples/example_null clean
+        CXXFLAGS="$CXXFLAGS -m64" CXX=clang++ make -C examples/example_null EXTRA_WARNINGS=1
+
+    - name: Build example_null (single file build)
+      run: |
+        echo '#define IMGUI_IMPLEMENTATION'                    >> example_single_file.cpp
+        echo '#include "misc/single_file/imgui_single_file.h"' >> example_single_file.cpp
+        echo '#include "examples/example_null/main.cpp"'       >> example_single_file.cpp
+        g++ -I. -Wall -Wformat -o example_single_file example_single_file.cpp
+
+    - name: Build example_glfw_opengl2
+      run: make -C examples/example_glfw_opengl2
+
+    - name: Build example_glfw_opengl3
+      run: make -C examples/example_glfw_opengl3
+      if: github.event_name == 'schedule'
+
+    - name: Build example_sdl_opengl2
+      run: make -C examples/example_sdl_opengl2
+      if: github.event_name == 'schedule'
+
+    - name: Build example_sdl_opengl3
+      run: make -C examples/example_sdl_opengl3
+
+  MacOS:
+    runs-on: macOS-latest
+    steps:
+    - uses: actions/checkout@v1
+      with:
+        fetch-depth: 1
+
+    - name: Install Dependencies
+      run: |
+        brew install glfw3
+        brew install sdl2
+
+    - name: Build example_null (extra warnings, clang 64-bit)
+      run: make -C examples/example_null EXTRA_WARNINGS=1
+
+    - name: Build example_null (single file build)
+      run: |
+        echo '#define IMGUI_IMPLEMENTATION'                    >> example_single_file.cpp
+        echo '#include "misc/single_file/imgui_single_file.h"' >> example_single_file.cpp
+        echo '#include "examples/example_null/main.cpp"'       >> example_single_file.cpp
+        clang++ -I. -Wall -Wformat -o example_single_file example_single_file.cpp
+
+    - name: Build example_glfw_opengl2
+      run: make -C examples/example_glfw_opengl2
+
+    - name: Build example_glfw_opengl3
+      run: make -C examples/example_glfw_opengl3
+      if: github.event_name == 'schedule'
+
+    - name: Build example_glfw_metal
+      run: make -C examples/example_glfw_metal
+
+    - name: Build example_sdl_opengl2
+      run: make -C examples/example_sdl_opengl2
+      if: github.event_name == 'schedule'
+
+    - name: Build example_sdl_opengl3
+      run: make -C examples/example_sdl_opengl3
+
+    - name: Build example_apple_metal
+      run: xcodebuild -project examples/example_apple_metal/example_apple_metal.xcodeproj -target example_apple_metal_macos
+
+    - name: Build example_apple_opengl2
+      run: xcodebuild -project examples/example_apple_opengl2/example_apple_opengl2.xcodeproj -target example_osx_opengl2
+
+  iOS:
+    runs-on: macOS-latest
+    steps:
+    - uses: actions/checkout@v1
+      with:
+        fetch-depth: 1
+
+    - name: Build example_apple_metal
+      run: |
+        # Code signing is required, but we disable it because it is irrelevant for CI builds.
+        xcodebuild -project examples/example_apple_metal/example_apple_metal.xcodeproj -target example_apple_metal_ios CODE_SIGN_IDENTITY="" CODE_SIGNING_REQUIRED=NO CODE_SIGNING_ALLOWED=NO
+
+  Emscripten:
+    runs-on: ubuntu-18.04
+    steps:
+    - uses: actions/checkout@v1
+      with:
+        fetch-depth: 1
+
+    - name: Install Dependencies
+      run: |
+        wget -q https://github.com/emscripten-core/emsdk/archive/master.tar.gz
+        tar -xvf master.tar.gz
+        emsdk-master/emsdk update
+        emsdk-master/emsdk install latest-fastcomp
+        emsdk-master/emsdk activate latest-fastcomp
+
+    - name: Build example_emscripten
+      run: |
+        source emsdk-master/emsdk_env.sh
+        make -C examples/example_emscripten
+
+  Static-Analysis:
+    runs-on: ubuntu-18.04
+    steps:
+      - uses: actions/checkout@v1
+        with:
+          fetch-depth: 1
+
+      - name: Install Dependencies
+        env:
+          PVS_STUDIO_LICENSE: ${{ secrets.PVS_STUDIO_LICENSE }}
+        run: |
+          if [[ "$PVS_STUDIO_LICENSE" != "" ]];
+          then
+            echo "$PVS_STUDIO_LICENSE" > pvs-studio.lic
+            wget -q https://files.viva64.com/etc/pubkey.txt
+            sudo apt-key add pubkey.txt
+            sudo wget -O /etc/apt/sources.list.d/viva64.list https://files.viva64.com/etc/viva64.list
+            sudo apt-get update
+            sudo apt-get install -y pvs-studio
+          fi
+
+      - name: PVS-Studio static analysis
+        run: |
+          if [[ ! -f pvs-studio.lic ]];
+          then
+            echo "PVS Studio license is missing. No analysis will be performed."
+            echo "If you have a PVS Studio license please create a project secret named PVS_STUDIO_LICENSE with your license."
+            echo "You may use a free license. More information at https://www.viva64.com/en/b/0457/"
+            exit 0
+          fi
+          cd examples/example_null
+          pvs-studio-analyzer trace -- make EXTRA_WARNINGS=1
+          pvs-studio-analyzer analyze -e ../../imstb_rectpack.h -e ../../imstb_textedit.h -e ../../imstb_truetype.h -l ../../pvs-studio.lic -o pvs-studio.log
+          plog-converter -a 'GA:1,2;OP:1' -t errorfile -w pvs-studio.log

.travis.yml

@@ -1,34 +0,0 @@
-language: cpp
-sudo: required
-dist: trusty
-
-os:
-  - linux
-  - osx
-
-compiler:
-  - gcc
-  - clang
-
-before_install:
-  - if [ $TRAVIS_OS_NAME == linux ]; then 
-      sudo apt-get update -qq;
-      sudo apt-get install -y --no-install-recommends libxrandr-dev libxi-dev libxxf86vm-dev libsdl2-dev;
-      wget https://github.com/glfw/glfw/releases/download/3.2.1/glfw-3.2.1.zip;
-      unzip glfw-3.2.1.zip && cd glfw-3.2.1; 
-      cmake -DBUILD_SHARED_LIBS=true -DGLFW_BUILD_EXAMPLES=false -DGLFW_BUILD_TESTS=false -DGLFW_BUILD_DOCS=false .;
-      sudo make -j $CPU_NUM install && cd ..;
-    fi
-  - if [ $TRAVIS_OS_NAME == osx ]; then 
-      brew update;
-      brew install glfw3;
-      brew install sdl2;
-    fi
-
-script: 
-  - make -C examples/example_glfw_opengl2
-  - make -C examples/example_glfw_opengl3
-  - make -C examples/example_sdl_opengl3
-  - if [ $TRAVIS_OS_NAME == osx ]; then 
-      xcodebuild -project examples/example_apple_metal/example_apple_metal.xcodeproj -target example_apple_metal_macos;
-    fi

LICENSE.txt

@@ -1,6 +1,6 @@
 The MIT License (MIT)
 
-Copyright (c) 2014-2019 Omar Cornut
+Copyright (c) 2014-2020 Omar Cornut
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

docs/CHANGELOG.txt

@@ -8,6 +8,7 @@ Changes to the examples/bindings are included within the individual .cpp files i
 RELEASE NOTES:                  https://github.com/ocornut/imgui/releases
 REPORT ISSUES, ASK QUESTIONS:   https://github.com/ocornut/imgui/issues
 COMMITS HISTORY:                https://github.com/ocornut/imgui/commits/master
+FAQ                             https://www.dearimgui.org/faq/
 
 WHEN TO UPDATE?
 
@@ -29,16 +30,194 @@ HOW TO UPDATE?
 - Please report any issue!
 
 
+-----------------------------------------------------------------------
+ VERSION 1.75 (Released 2020-02-10)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.75
+
+Breaking Changes:
+
+- Removed redirecting functions/enums names that were marked obsolete in 1.53 (December 2017):
+  - ShowTestWindow()                    -> use ShowDemoWindow()
+  - IsRootWindowFocused()               -> use IsWindowFocused(ImGuiFocusedFlags_RootWindow)
+  - IsRootWindowOrAnyChildFocused()     -> use IsWindowFocused(ImGuiFocusedFlags_RootAndChildWindows)
+  - SetNextWindowContentWidth(w)        -> use SetNextWindowContentSize(ImVec2(w, 0.0f)
+  - GetItemsLineHeightWithSpacing()     -> use GetFrameHeightWithSpacing()
+  - ImGuiCol_ChildWindowBg              -> use ImGuiCol_ChildBg
+  - ImGuiStyleVar_ChildWindowRounding   -> use ImGuiStyleVar_ChildRounding
+  - ImGuiTreeNodeFlags_AllowOverlapMode -> use ImGuiTreeNodeFlags_AllowItemOverlap
+  - IMGUI_DISABLE_TEST_WINDOWS          -> use IMGUI_DISABLE_DEMO_WINDOWS
+  If you were still using the old names, while you are cleaning up, considering enabling
+  IMGUI_DISABLE_OBSOLETE_FUNCTIONS in imconfig.h even temporarily to have a pass at finding
+  and removing up old API calls, if any remaining.
+- Removed implicit default parameter to IsMouseDragging(int button = 0) to be consistent
+  with other mouse functions (none of the other functions have it).
+- Obsoleted calling ImDrawList::PrimReserve() with a negative count (which was vaguely
+  documented and rarely if ever used). Instead we added an explicit PrimUnreserve() API
+  which can be implemented faster. Also clarified pre-existing constraints which weren't
+  documented (can only unreserve from the last reserve call). If you suspect you ever
+  used that feature before (very unlikely, but grep for call to PrimReserve in your code),
+  you can #define IMGUI_DEBUG_PARANOID in imconfig.h to catch existing calls. [@ShironekoBen]
+- ImDrawList::AddCircle()/AddCircleFilled() functions don't accept negative radius.
+- Limiting Columns()/BeginColumns() api to 64 columns with an assert. While the current code
+  technically supports it, future code may not so we're putting the restriction ahead.
+- imgui_internal.h: changed ImRect() default constructor initializes all fields to 0.0f instead
+  of (FLT_MAX,FLT_MAX,-FLT_MAX,-FLT_MAX). If you used ImRect::Add() to create bounding boxes by
+  adding points into it without explicit initialization, you may need to fix your initial value.
+
+Other Changes:
+
+- Inputs: Added ImGuiMouseButton enum for convenience (e.g. ImGuiMouseButton_Right=1).
+  We forever guarantee that the existing value will not changes so existing code is free to use 0/1/2.
+- Nav: Fixed a bug where the initial CTRL-Tab press while in a child window sometimes selected
+  the current root window instead of always selecting the previous root window. (#787)
+- ColorEdit: Fix label alignment when using ImGuiColorEditFlags_NoInputs. (#2955) [@rokups]
+- ColorEdit: In HSV display of a RGB stored value, attempt to locally preserve Saturation
+  when Value==0.0 (similar to changes done in 1.73 for Hue). Removed Hue editing lock since
+  those improvements in 1.73 makes them unnecessary. (#2722, #2770). [@rokups]
+- ColorEdit: "Copy As" context-menu tool shows hex values with a '#' prefix instead of '0x'.
+- ColorEdit: "Copy As" content-menu tool shows hex values both with/without alpha when available.
+- InputText: Fix corruption or crash when executing undo after clearing input with ESC, as a
+  byproduct we are allowing to later undo the revert with a CTRL+Z. (#3008).
+- InputText: Fix using a combination of _CallbackResize (e.g. for std::string binding), along with the
+  _EnterReturnsTrue flag along with the rarely used property of using an InputText without persisting
+  user-side storage. Previously if you had e.g. a local unsaved std::string and reading result back
+  from the widget, the user string object wouldn't be resized when Enter key was pressed. (#3009)
+- MenuBar: Fix minor clipping issue where occasionally a menu text can overlap the right-most border.
+- Window: Fix SetNextWindowBgAlpha(1.0f) failing to override alpha component. (#3007) [@Albog]
+- Window: When testing for the presence of the ImGuiWindowFlags_NoBringToFrontOnFocus flag we
+  test both the focused/clicked window (which could be a child window) and the root window.
+- ImDrawList: AddCircle(), AddCircleFilled() API can now auto-tessellate when provided a segment
+  count of zero. Alter tessellation quality with 'style.CircleSegmentMaxError'. [@ShironekoBen]
+- ImDrawList: Add AddNgon(), AddNgonFilled() API with a guarantee on the explicit segment count.
+  In the current branch they are essentially the same as AddCircle(), AddCircleFilled() but as
+  we will rework the circle rendering functions to use textures and automatic segment count
+  selection, those new api can fill a gap. [@ShironekoBen]
+- Columns: ImDrawList::Channels* functions now work inside columns. Added extra comments to
+  suggest using user-owned ImDrawListSplitter instead of ImDrawList functions. [@rokups]
+- Misc: Added ImGuiMouseCursor_NotAllowed enum so it can be used by more shared widgets. [@rokups]
+- Misc: Added IMGUI_DISABLE compile-time definition to make all headers and sources empty.
+- Misc: Disable format checks when using stb_printf, to allow using extra formats.
+  Made IMGUI_USE_STB_SPRINTF a properly documented imconfig.h flag. (#2954) [@loicmolinari]
+- Misc: Added misc/single_file/imgui_single_file.h, We use this to validate compiling all *.cpp
+  files in a same compilation unit. Actual users of that technique (also called "Unity builds")
+  can generally provide this themselves, so we don't really recommend you use this. [@rokups]
+- CI: Added PVS-Studio static analysis on the continuous-integration server. [@rokups]
+- Backends: GLFW, SDL, Win32, OSX, Allegro: Added support for ImGuiMouseCursor_NotAllowed. [@rokups]
+- Backends: GLFW: Added support for the missing mouse cursors newly added in GLFW 3.4+. [@rokups]
+- Backends: SDL: Wayland: use SDL_GetMouseState (because there is no global mouse state available
+  on Wayland). (#2800, #2802) [@NeroBurner]
+- Backends: GLFW, SDL: report Windows key (io.KeySuper) as always released. Neither GLFW nor SDL can
+  correctly report the key release in every cases (e.g. when using Win+V) causing problems with some
+  widgets. The next release of GLFW (3.4+) will have a fix for it. However since it is both difficult
+  and discouraged to make use of this key for Windows application anyway, we just hide it. (#2976)
+- Backends: Win32: Added support for #define IMGUI_IMPL_WIN32_DISABLE_GAMEPAD to disable all
+  XInput using code, and IMGUI_IMPL_WIN32_DISABLE_LINKING_XINPUT to disable linking with XInput,
+  the later may be problematic if compiling with recent Windows SDK and you want your app to run
+  on Windows 7. You can instead try linking with Xinput9_1_0.lib instead. (#2716)
+- Backends: Glut: Improved FreeGLUT support for MinGW. (#3004) [@podsvirov]
+- Backends: Emscripten: Avoid forcefully setting IMGUI_DISABLE_FILE_FUNCTIONS. (#3005) [@podsvirov]
+- Examples: OpenGL: Explicitly adding -DIMGUI_IMPL_OPENGL_LOADER_GL3W to Makefile to match linking
+  settings (otherwise if another loader such as Glew is accessible, the OpenGL3 backend might
+  automatically use it). (#2919, #2798)
+- Examples: OpenGL: Added support for glbindings OpenGL loader. (#2870) [@rokups]
+- Examples: Emscripten: Demonstrating embedding fonts in Makefile and code. (#2953) [@Oipo]
+- Examples: Metal: Wrapped main loop in @autoreleasepool block to ensure allocations get freed
+  even if underlying system event loop gets paused due to app nap. (#2910, #2917) [@bear24rw]
+
+
+-----------------------------------------------------------------------
+ VERSION 1.74 (Released 2019-11-25)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.74
+
+Breaking Changes:
+
+- Removed redirecting functions/enums names that were marked obsolete in 1.52 (October 2017):
+  - Begin() [old 5 args version]     -> use Begin() [3 args], use SetNextWindowSize() SetNextWindowBgAlpha() if needed
+  - IsRootWindowOrAnyChildHovered()  -> use IsWindowHovered(ImGuiHoveredFlags_RootAndChildWindows)
+  - AlignFirstTextHeightToWidgets()  -> use AlignTextToFramePadding()
+  - SetNextWindowPosCenter()         -> use SetNextWindowPos() with a pivot of (0.5f, 0.5f)
+  - ImFont::Glyph                    -> use ImFontGlyph
+  If you were still using the old names, read "API Breaking Changes" section of imgui.cpp to find out
+  the new names or equivalent features, or see how they were implemented until 1.73.
+- Inputs: Fixed a miscalculation in the keyboard/mouse "typematic" repeat delay/rate calculation, used
+  by keys and e.g. repeating mouse buttons as well as the GetKeyPressedAmount() function.
+  If you were using a non-default value for io.KeyRepeatRate (previous default was 0.250), you can
+  add +io.KeyRepeatDelay to it to compensate for the fix.
+  The function was triggering on: 0.0 and (delay+rate*N) where (N>=1). Fixed formula responds to (N>=0).
+  Effectively it made io.KeyRepeatRate behave like it was set to (io.KeyRepeatRate + io.KeyRepeatDelay).
+  Fixed the code and altered default io.KeyRepeatRate,Delay from 0.250,0.050 to 0.300,0.050 to compensate.
+  If you never altered io.KeyRepeatRate nor used GetKeyPressedAmount() this won't affect you.
+- Misc: Renamed IMGUI_DISABLE_FORMAT_STRING_FUNCTIONS to IMGUI_DISABLE_DEFAULT_FORMAT_FUNCTIONS. (#1038)
+- Misc: Renamed IMGUI_DISABLE_MATH_FUNCTIONS to IMGUI_DISABLE_DEFAULT_MATH_FUNCTIONS.
+- Fonts: ImFontAtlas::AddCustomRectRegular() now requires an ID larger than 0x110000 (instead of 0x10000) to
+  conform with supporting Unicode planes 1-16 in a future update. ID below 0x110000 will now assert.
+- Backends: DX12: Added extra ID3D12DescriptorHeap parameter to ImGui_ImplDX12_Init() function.
+  The value is unused in master branch but will be used by the multi-viewport feature. (#2851) [@obfuscate]
+
+Other Changes:
+
+- InputText, Nav: Fixed Home/End key broken when activating Keyboard Navigation. (#787)
+- InputText: Filter out ASCII 127 (DEL) emitted by low-level OSX layer, as we are using the Key value. (#2578)
+- Layout: Fixed a couple of subtle bounding box vertical positioning issues relating to the handling of text
+  baseline alignment. The issue would generally manifest when laying out multiple items on a same line,
+  with varying heights and text baseline offsets.
+  Some specific examples, e.g. a button with regular frame padding followed by another item with a
+  multi-line label and no frame padding, such as: multi-line text, small button, tree node item, etc.
+  The second item was correctly offset to match text baseline, and would interact/display correctly,
+  but it wouldn't push the contents area boundary low enough.
+- Scrollbar: Fixed an issue where scrollbars wouldn't display on the frame following a frame where
+  all child window contents would be culled.
+- ColorPicker: Fixed SV triangle gradient to block (broken in 1.73). (#2864, #2711). [@lewa-j]
+- TreeNode: Fixed combination of ImGuiTreeNodeFlags_SpanFullWidth and ImGuiTreeNodeFlags_OpenOnArrow
+  incorrectly locating the arrow hit position to the left of the frame. (#2451, #2438, #1897)
+- TreeNode: The collapsing arrow accepts click even if modifier keys are being held, facilitating
+  interactions with custom multi-selections patterns. (#2886, #1896, #1861)
+- TreeNode: Added IsItemToggledOpen() to explicitly query if item was just open/closed, facilitating
+  interactions with custom multi-selections patterns. (#1896, #1861)
+- DragScalar, SliderScalar, InputScalar: Added p_ prefix to parameter that are pointers to the data
+  to clarify how they are used, and more comments redirecting to the demo code. (#2844)
+- Error handling: Assert if user mistakenly calls End() instead of EndChild() on a child window. (#1651)
+- Misc: Optimized storage of window settings data (reducing allocation count).
+- Misc: Windows: Do not use _wfopen() if IMGUI_DISABLE_WIN32_FUNCTIONS is defined. (#2815)
+- Misc: Windows: Disabled win32 function by default when building with UWP. (#2892, #2895)
+- Misc: Using static_assert() when using C++11, instead of our own construct (avoid zealous Clang warnings).
+- Misc: Added IMGUI_DISABLE_FILE_FUNCTIONS/IMGUI_DISABLE_DEFAULT_FILE_FUNCTION to nullify or disable
+  default implementation of ImFileXXX functions linking with fopen/fclose/fread/fwrite. (#2734)
+- Docs: Improved and moved FAQ to docs/FAQ.md so it can be readable on the web. [@ButternCream, @ocornut]
+- Docs: Moved misc/fonts/README.txt to docs/FONTS.txt.
+- Docs: Added permanent redirect from https://www.dearimgui.org/faq to FAQ page.
+- Demo: Added simple item reordering demo in Widgets -> Drag and Drop section. (#2823, #143) [@rokups]
+- Metrics: Show wire-frame mesh and approximate surface area when hovering ImDrawCmd. [@ShironekoBen]
+- Metrics: Expose basic details of each window key/value state storage.
+- Examples: DX12: Using IDXGIDebug1::ReportLiveObjects() when DX12_ENABLE_DEBUG_LAYER is enabled.
+- Examples: Emscripten: Removed BINARYEN_TRAP_MODE=clamp from Makefile which was removed in Emscripten 1.39.0
+  but required prior to 1.39.0, making life easier for absolutely no-one. (#2877, #2878) [@podsvirov]
+- Backends: OpenGL2: Explicitly backup, setup and restore GL_TEXTURE_ENV to increase compatibility with
+  legacy OpenGL applications. (#3000)
+- Backends: OpenGL3: Fix building with pre-3.2 GL loaders which do not expose glDrawElementsBaseVertex(),
+  using runtime GL version to decide if we set ImGuiBackendFlags_RendererHasVtxOffset. (#2866, #2852) [@dpilawa]
+- Backends: OSX: Fix using Backspace key. (#2578, #2817, #2818) [@DiligentGraphics]
+- Backends: GLFW: Previously installed user callbacks are now restored on shutdown. (#2836) [@malte-v]
+- CI: Set up a bunch of continuous-integration tests using GitHub Actions. We now compile many of the example
+  applications on Windows, Linux, MacOS, iOS, Emscripten. Removed Travis integration. (#2865) [@rokups]
+
+
 -----------------------------------------------------------------------
  VERSION 1.73 (Released 2019-09-24)
 -----------------------------------------------------------------------
 
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.73
+
 Other Changes:
 
 - Nav, Scrolling: Added support for Home/End key. (#787)
 - ColorEdit: Disable Hue edit when Saturation==0 instead of letting Hue values jump around.
 - ColorEdit, ColorPicker: In HSV display of a RGB stored value, attempt to locally preserve Hue
-  when Saturation==0, which reduces accidentally lossy interactions. (#2722, 2770) [@rokups]
+  when Saturation==0, which reduces accidentally lossy interactions. (#2722, #2770) [@rokups]
 - ColorPicker: Made rendering aware of global style alpha of the picker can be faded out. (#2711)
   Note that some elements won't accurately fade down with the same intensity, and the color wheel
   when enabled will have small overlap glitches with (style.Alpha < 1.0).
@@ -93,6 +272,8 @@ Other Changes:
  VERSION 1.72b (Released 2019-07-31)
 -----------------------------------------------------------------------
 
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.72b
+
 Other Changes:
 
 - Nav, Scrolling: Fixed programmatic scroll leading to a slightly incorrect scroll offset when
@@ -108,7 +289,10 @@ Other Changes:
  VERSION 1.72 (Released 2019-07-27)
 -----------------------------------------------------------------------
 
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.72
+
 Breaking Changes:
+
 - Removed redirecting functions/enums names that were marked obsolete in 1.51 (June 2017):
   - ImGuiCol_Column*, ImGuiSetCond_* enums.
   - IsItemHoveredRect(), IsPosHoveringAnyWindow(), IsMouseHoveringAnyWindow(), IsMouseHoveringWindow() functions.
@@ -120,6 +304,7 @@ Breaking Changes:
   Kept redirection function (will obsolete). (#581, #324)
 
 Other Changes:
+
 - Scrolling: Made mouse-wheel scrolling lock the underlying window until the mouse is moved again or
   until a short delay expires (~2 seconds). This allow uninterrupted scroll even if child windows are
   passing under the mouse cursor. (#2604)
@@ -189,7 +374,10 @@ Other Changes:
  VERSION 1.71 (Released 2019-06-12)
 -----------------------------------------------------------------------
 
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.71
+
 Breaking Changes:
+
 - IO: changed AddInputCharacter(unsigned short c) signature to AddInputCharacter(unsigned int c).
 - Renamed SetNextTreeNodeOpen() to SetNextItemOpen(). Kept inline redirection function (will obsolete).
 - Window: rendering of child windows outer decorations (e.g. bg color, border, scrollbars) is now
@@ -200,6 +388,7 @@ Breaking Changes:
   to the creation of overlapping child windows. Please reach out if you are affected by this change!
 
 Other Changes:
+
 - Window: clarified behavior of SetNextWindowContentSize(). Content size is defined as the size available
   after removal of WindowPadding on each sides. So SetNextWindowContentSize(ImVec2(100,100)) + auto-resize
   will always allow submitting a 100x100 item without creating a scrollbar, regarding of WindowPadding.
@@ -241,11 +430,11 @@ Other Changes:
   collapsing/docking button to the other side of the title bar.
 - Style: Made window close button cross slightly smaller.
 - Log/Capture: Fixed BeginTabItem() label not being included in a text log/capture.
-- ImDrawList: Added ImDrawCmd::VtxOffset value to support large meshes (64k+ vertices) using 16-bits indices.
+- ImDrawList: Added ImDrawCmd::VtxOffset value to support large meshes (64k+ vertices) using 16-bit indices.
   The renderer back-end needs to set 'io.BackendFlags |= ImGuiBackendFlags_RendererHasVtxOffset' to enable
   this, and honor the ImDrawCmd::VtxOffset field. Otherwise the value will always be zero.
   This has the advantage of preserving smaller index buffers and allowing to execute on hardware that do not
-  support 32-bits indices. Most examples back-ends have been modified to support the VtxOffset field.
+  support 32-bit indices. Most examples back-ends have been modified to support the VtxOffset field.
 - ImDrawList: Added ImDrawCmd::IdxOffset value, equivalent to summing element count for each draw command.
   This is provided for convenience and consistency with VtxOffset.
 - ImDrawCallback: Allow to override the signature of ImDrawCallback by #define-ing it. This is meant to
@@ -259,7 +448,7 @@ Other Changes:
   dealing with Win32, and to facilitate integration in custom engines. (#2546) [@andrewwillmott]
 - Backends: OSX: imgui_impl_osx: Added mouse cursor support. (#2585, #1873) [@actboy168]
 - Examples/Backends: DirectX9/10/11/12, Metal, Vulkan, OpenGL3 (Desktop GL only): Added support for large meshes
-  (64k+ vertices) with 16-bits indices, enable 'ImGuiBackendFlags_RendererHasVtxOffset' in those back-ends.
+  (64k+ vertices) with 16-bit indices, enable 'ImGuiBackendFlags_RendererHasVtxOffset' in those back-ends.
 - Examples/Backends: Don't filter characters under 0x10000 before calling io.AddInputCharacter(),
   the filtering is done in io.AddInputCharacter() itself. This is in prevision for fuller Unicode
   support. (#2538, #2541)
@@ -269,7 +458,10 @@ Other Changes:
  VERSION 1.70 (Released 2019-05-06)
 -----------------------------------------------------------------------
 
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.70
+
 Breaking Changes:
+
 - ImDrawList: Improved algorithm for mitre joints on thick lines, preserving correct thickness
   up to 90 degrees angles (e.g. rectangles). If you have custom rendering using thick lines,
   they will appear a little thicker now. (#2518) [@rmitton]
@@ -282,6 +474,7 @@ Breaking Changes:
   on them but it is possible you have!).
 
 Other Changes:
+
 - ImDrawList: Added ImDrawCallback_ResetRenderState, a special ImDrawList::AddCallback() value
   to request the renderer back-end to reset its render state. (#2037, #1639, #2452)
   Examples: Added support for ImDrawCallback_ResetRenderState in all renderer back-ends. Each
@@ -356,6 +549,8 @@ Other Changes:
  VERSION 1.69 (Released 2019-03-13)
 -----------------------------------------------------------------------
 
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.69
+
 Breaking Changes:
 
 - Renamed ColorEdit/ColorPicker's ImGuiColorEditFlags_RGB/_HSV/_HEX flags to respectively
@@ -432,6 +627,8 @@ Other Changes:
  VERSION 1.68 (Released 2019-02-19)
 -----------------------------------------------------------------------
 
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.68
+
 Breaking Changes:
 
 - Removed io.DisplayVisibleMin/DisplayVisibleMax (which were marked obsolete and removed from viewport/docking branch already).
@@ -500,6 +697,8 @@ Other Changes:
  VERSION 1.67 (Released 2019-01-14)
 -----------------------------------------------------------------------
 
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.67
+
 Breaking Changes:
 
 - Made it illegal to call Begin("") with an empty string. This somehow half-worked before but had various undesirable
@@ -563,6 +762,8 @@ Other Changes:
  VERSION 1.66b (Released 2018-12-01)
 -----------------------------------------------------------------------
 
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.66b
+
 Other Changes:
 
 - Fixed a text rendering/clipping bug introduced in 1.66 (on 2018-10-12, commit ede3a3b9) that affect single ImDrawList::AddText()
@@ -580,6 +781,8 @@ Other Changes:
  VERSION 1.66 (Released 2018-11-22)
 -----------------------------------------------------------------------
 
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.66
+
 Breaking Changes:
 
 - Renamed SetScrollHere() to SetScrollHereY(). Kept redirection function (will obsolete).
@@ -639,6 +842,8 @@ Other Changes:
  VERSION 1.65 (Released 2018-09-06)
 -----------------------------------------------------------------------
 
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.65
+
 Breaking Changes:
 
 - Renamed stb_truetype.h to imstb_truetype.h, stb_textedit.h to imstb_textedit.h, and
@@ -663,6 +868,8 @@ Other Changes:
  VERSION 1.64 (Released 2018-08-31)
 -----------------------------------------------------------------------
 
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.64
+
 Changes:
 
 - Moved README, CHANGELOG and TODO files to the docs/ folder.
@@ -685,6 +892,8 @@ Changes:
  VERSION 1.63 (Released 2018-08-29)
 -----------------------------------------------------------------------
 
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.63
+
 Breaking Changes:
 
 - Style: Renamed ImGuiCol_ModalWindowDarkening to ImGuiCol_ModalWindowDimBg for consistency with other features.
@@ -777,6 +986,8 @@ Other Changes:
  VERSION 1.62 (Released 2018-06-22)
 -----------------------------------------------------------------------
 
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.62
+
 Breaking Changes:
 
 - TreeNodeEx(): The helper ImGuiTreeNodeFlags_CollapsingHeader flag now include ImGuiTreeNodeFlags_NoTreePushOnOpen.
@@ -856,6 +1067,8 @@ Other Changes:
  VERSION 1.61 (Released 2018-05-14)
 -----------------------------------------------------------------------
 
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.61
+
 Breaking Changes:
 
 - DragInt(): The default compile-time format string has been changed from "%.0f" to "%d", as we are not using integers internally
@@ -1666,7 +1879,7 @@ Changes:
 - Fixed border rendering in various situations when using non-pixel aligned glyphs.
 - Fixed border rendering of windows to always contain the border within the window.
 - Fixed Shutdown() leaking font atlas data if NewFrame() was never called. (#396, #303)
-- Fixed int>void\* warnings for 64-bits architectures with fancy warnings enabled.
+- Fixed int>void\* warnings for 64-bit architectures with fancy warnings enabled.
 - Renamed the dubious Color() helpers to ValueColor() - dangerously named, rarely used and probably to be made obsolete.
 - InputText(): Fixed and better handling of using keyboard while mouse button if being held and dragging. (#429)
 - InputText(): Replace OS IME (Input Method Editor) cursor on top-left when we are not text editing.

docs/FAQ.md

@@ -0,0 +1,592 @@
+# FAQ (Frequenty Asked Questions)
+
+You may link to this document using short form:
+  https://www.dearimgui.org/faq
+or its real address:
+  https://github.com/ocornut/imgui/blob/master/docs/FAQ.md
+or view this file with any Markdown viewer.
+
+
+## Index
+
+| **Q&A: Basics** |
+:---------------------------------------------------------- |
+| [Where is the documentation?](#q-where-is-the-documentation) |
+| [What is this library called?](#q-what-is-this-library-called) |
+| [Which version should I get?](#q-which-version-should-i-get) |
+| **Q&A: Integration** |
+| **[How can I tell whether to dispatch mouse/keyboard to Dear ImGui or to my application?](#q-how-can-i-tell-whether-to-dispatch-mousekeyboard-to-dear-imgui-or-to-my-application)** |
+| [How can I enable keyboard or gamepad controls?](#q-how-can-i-enable-keyboard-or-gamepad-controls) |
+| [How can I use this on a machine without mouse, keyboard or screen? (input share, remote display)](#q-how-can-i-use-this-on-a-machine-without-mouse-keyboard-or-screen-input-share-remote-display) |
+| [I integrated Dear ImGui in my engine and the text or lines are blurry..](#q-i-integrated-dear-imgui-in-my-engine-and-the-text-or-lines-are-blurry) |
+| [I integrated Dear ImGui in my engine and some elements are clipping or disappearing when I move windows around..](#q-i-integrated-dear-imgui-in-my-engine-and-some-elements-are-clipping-or-disappearing-when-i-move-windows-around) |
+| **Q&A: Usage** |
+| **[Why are multiple widgets reacting when I interact with a single one?<br>How can I have multiple widgets with the same label or with an empty label?](#q-why-are-multiple-widgets-reacting-when-i-interact-with-a-single-one-q-how-can-i-have-multiple-widgets-with-the-same-label-or-with-an-empty-label)** |
+| [How can I display an image? What is ImTextureID, how does it work?](#q-how-can-i-display-an-image-what-is-imtextureid-how-does-it-work)|
+| [How can I use my own math types instead of ImVec2/ImVec4?](#q-how-can-i-use-my-own-math-types-instead-of-imvec2imvec4) |
+| [How can I interact with standard C++ types (such as std::string and std::vector)?](#q-how-can-i-interact-with-standard-c-types-such-as-stdstring-and-stdvector) |
+| [How can I display custom shapes? (using low-level ImDrawList API)](#q-how-can-i-display-custom-shapes-using-low-level-imdrawlist-api) |
+| **Q&A: Fonts, Text** |
+| [How can I load a different font than the default?](#q-how-can-i-load-a-different-font-than-the-default) |
+| [How can I easily use icons in my application?](#q-how-can-i-easily-use-icons-in-my-application) |
+| [How can I load multiple fonts?](#q-how-can-i-load-multiple-fonts) |
+| [How can I display and input non-Latin characters such as Chinese, Japanese, Korean, Cyrillic?](#q-how-can-i-display-and-input-non-latin-characters-such-as-chinese-japanese-korean-cyrillic) |
+| **Q&A: Concerns** |
+| [Who uses Dear ImGui?](#q-who-uses-dear-imgui) |
+| [Can you create elaborate/serious tools with Dear ImGui?](#q-can-you-create-elaborateserious-tools-with-dear-imgui)  |
+| [Can you reskin the look of Dear ImGui?](#q-can-you-reskin-the-look-of-dear-imgui) |
+| [Why using C++ (as opposed to C)?](#q-why-using-c-as-opposed-to-c) |
+| **Q&A: Community** |
+| [How can I help?](#q-how-can-i-help) |
+
+
+# Q&A: Basics
+
+### Q: Where is the documentation?
+
+**This library is poorly documented at the moment and expects of the user to be acquainted with C/C++.**
+- Dozens of standalone example applications using e.g. OpenGL/DirectX are provided in the [examples/](https://github.com/ocornut/imgui/blob/master/examples/) folder to explain how to integrate Dear ImGui with your own engine/application. You can run those applications and explore them.
+- See demo code in [imgui_demo.cpp](https://github.com/ocornut/imgui/blob/master/imgui_demo.cpp) and particularly the `ImGui::ShowDemoWindow()` function. The demo covers most features of Dear ImGui, so you can read the code and see its output.
+- See documentation and comments at the top of [imgui.cpp](https://github.com/ocornut/imgui/blob/master/imgui.cpp) + general API comments in [imgui.h](https://github.com/ocornut/imgui/blob/master/imgui.h).
+- The [Wiki](https://github.com/ocornut/imgui/wiki) has many resources and links.
+- The [Glossary](https://github.com/ocornut/imgui/wiki/Glossary) page may be useful.
+- The [Issues](https://github.com/ocornut/imgui/issues) section can be searched for past questions and issues.
+- Your programming IDE is your friend, find the type or function declaration to find comments associated to it.
+- The `ImGui::ShowMetricsWindow()` function exposes lots of internal information and tools. Although it is primary designed as a debugging tool, having access to that information tends to help understands concepts.
+
+##### [Return to Index](#index)
+
+---
+
+### Q. What is this library called?
+
+**This library is called Dear ImGui**. Please refer to it as Dear ImGui (not ImGui, not IMGUI).
+
+(The library misleadingly started its life in 2014 as "ImGui" due to the fact that I didn't give it a proper name when when I released 1.0, and had no particular expectation that it would take off. However, the term IMGUI (immediate-mode graphical user interface) was coined before and is being used in variety of other situations e.g. Unity uses it own implementation of the IMGUI paradigm. To reduce the ambiguity without affecting existing code bases, I have decided in December 2015 a fully qualified name "Dear ImGui" for this library.
+
+##### [Return to Index](#index)
+
+---
+
+### Q: Which version should I get?
+I occasionally tag [Releases](https://github.com/ocornut/imgui/releases) but it is generally safe and recommended to sync to master/latest. The library is fairly stable and regressions tend to be fixed fast when reported.
+
+You may use the [docking](https://github.com/ocornut/imgui/tree/docking) branch which includes:
+- [Docking features](https://github.com/ocornut/imgui/issues/2109)
+- [Multi-viewport features](https://github.com/ocornut/imgui/issues/1542)
+
+Many projects are using this branch and it is kept in sync with master regularly.
+
+##### [Return to Index](#index)
+
+----
+
+# Q&A: Integration
+
+### Q: How can I tell whether to dispatch mouse/keyboard to Dear ImGui or to my application?
+
+You can read the `io.WantCaptureMouse`, `io.WantCaptureKeyboard` and `io.WantTextInput` flags from the ImGuiIO structure.
+
+e.g. `if (ImGui::GetIO().WantCaptureMouse) { ... }`
+
+- When `io.WantCaptureMouse` is set, imgui wants to use your mouse state, and you may want to discard/hide the inputs from the rest of your application.
+- When `io.WantCaptureKeyboard` is set, imgui wants to use your keyboard state, and you may want to discard/hide the inputs from the rest of your application.
+- When `io.WantTextInput` is set to may want to notify your OS to popup an on-screen keyboard, if available (e.g. on a mobile phone, or console OS).
+
+**Note:** You should always pass your mouse/keyboard inputs to Dear ImGui, even when the io.WantCaptureXXX flag are set false.
+ This is because imgui needs to detect that you clicked in the void to unfocus its own windows.
+
+**Note:** The `io.WantCaptureMouse` is more accurate that any manual attempt to "check if the mouse is hovering a window" (don't do that!). It handle mouse dragging correctly (both dragging that started over your application or over an imgui window) and handle e.g. modal windows blocking inputs. Those flags are updated by `ImGui::NewFrame()`. Preferably read the flags after calling NewFrame() if you can afford it, but reading them before is also perfectly fine, as the bool toggle fairly rarely. If you have on a touch device, you might find use for an early call to `UpdateHoveredWindowAndCaptureFlags()`.
+
+**Note:** Text input widget releases focus on "Return KeyDown", so the subsequent "Return KeyUp" event that your application receive will typically have `io.WantCaptureKeyboard == false`. Depending on your application logic it may or not be inconvenient. You might want to track which key-downs were targeted for Dear ImGui, e.g. with an array of bool, and filter out the corresponding key-ups.)
+
+##### [Return to Index](#index)
+
+---
+
+### Q: How can I enable keyboard or gamepad controls?
+- The gamepad/keyboard navigation is fairly functional and keeps being improved. The initial focus was to support game controllers, but keyboard is becoming increasingly and decently usable. Gamepad support is particularly useful to use Dear ImGui on a game console (e.g. PS4, Switch, XB1) without a mouse connected!
+- Keyboard: set `io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard` to enable.
+- Gamepad: set `io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad` to enable (with a supporting back-end).
+- See [Control Sheets for Gamepads](http://www.dearimgui.org/controls_sheets) (reference PNG/PSD for for PS4, XB1, Switch gamepads).
+- See `USING GAMEPAD/KEYBOARD NAVIGATION CONTROLS` section of [imgui.cpp](https://github.com/ocornut/imgui/blob/master/imgui.cpp) for more details.
+
+##### [Return to Index](#index)
+
+---
+
+### Q: How can I use this on a machine without mouse, keyboard or screen? (input share, remote display)
+- You can share your computer mouse seamlessly with your console/tablet/phone using solutions such as [Synergy](https://symless.com/synergy)
+This is the preferred solution for developer productivity.
+In particular, the [micro-synergy-client repository](https://github.com/symless/micro-synergy-client) has simple
+and portable source code (uSynergy.c/.h) for a small embeddable client that you can use on any platform to connect
+to your host computer, based on the Synergy 1.x protocol. Make sure you download the Synergy 1 server on your computer.
+Console SDK also sometimes provide equivalent tooling or wrapper for Synergy-like protocols.
+- Game console users: consider emulating a mouse cursor with DualShock4 touch pad or a spare analog stick as a mouse-emulation fallback.
+- You may also use a third party solution such as [Remote ImGui](https://github.com/JordiRos/remoteimgui) or [imgui-ws](https://github.com/ggerganov/imgui-ws) which sends the vertices to render over the local network, allowing you to use Dear ImGui even on a screen-less machine. See [Wiki](https://github.com/ocornut/imgui/wiki) index for most details.
+- For touch inputs, you can increase the hit box of widgets (via the `style.TouchPadding` setting) to accommodate for the lack of precision of touch inputs, but it is recommended you use a mouse or gamepad to allow optimizing for screen real-estate and precision.
+
+##### [Return to Index](#index)
+
+---
+
+### Q: I integrated Dear ImGui in my engine and the text or lines are blurry..
+In your Render function, try translating your projection matrix by (0.5f,0.5f) or (0.375f,0.375f).
+Also make sure your orthographic projection matrix and io.DisplaySize matches your actual framebuffer dimension.
+
+##### [Return to Index](#index)
+
+---
+
+### Q: I integrated Dear ImGui in my engine and some elements are clipping or disappearing when I move windows around..
+You are probably mishandling the clipping rectangles in your render function.
+Rectangles provided by ImGui are defined as
+`(x1=left,y1=top,x2=right,y2=bottom)`
+and **NOT** as
+`(x1,y1,width,height)`
+
+##### [Return to Index](#index)
+
+---
+
+# Q&A: Usage
+
+### Q: Why are multiple widgets reacting when I interact with a single one? <br>Q: How can I have multiple widgets with the same label or with an empty label?
+
+A primer on labels and the ID Stack...
+
+Dear ImGui internally need to uniquely identify UI elements.
+Elements that are typically not clickable (such as calls to the Text functions) don't need an ID.
+Interactive widgets (such as calls to Button buttons) need a unique ID.
+Unique ID are used internally to track active widgets and occasionally associate state to widgets.
+Unique ID are implicitly built from the hash of multiple elements that identify the "path" to the UI element.
+
+- Unique ID are often derived from a string label:
+```c
+Button("OK");          // Label = "OK",     ID = hash of (..., "OK")
+Button("Cancel");      // Label = "Cancel", ID = hash of (..., "Cancel")
+```
+- ID are uniquely scoped within windows, tree nodes, etc. which all pushes to the ID stack. Having
+two buttons labeled "OK" in different windows or different tree locations is fine.
+We used "..." above to signify whatever was already pushed to the ID stack previously:
+```c
+Begin("MyWindow");
+Button("OK");          // Label = "OK",     ID = hash of ("MyWindow", "OK")
+End();
+Begin("MyOtherWindow");
+Button("OK");          // Label = "OK",     ID = hash of ("MyOtherWindow", "OK")
+End();
+```
+- If you have a same ID twice in the same location, you'll have a conflict:
+```c
+Button("OK");
+Button("OK");          // ID collision! Interacting with either button will trigger the first one.
+```
+Fear not! this is easy to solve and there are many ways to solve it!
+
+- Solving ID conflict in a simple/local context:
+When passing a label you can optionally specify extra ID information within string itself.
+Use "##" to pass a complement to the ID that won't be visible to the end-user.
+This helps solving the simple collision cases when you know e.g. at compilation time which items
+are going to be created:
+```c
+Begin("MyWindow");
+Button("Play");        // Label = "Play",   ID = hash of ("MyWindow", "Play")
+Button("Play##foo1");  // Label = "Play",   ID = hash of ("MyWindow", "Play##foo1")  // Different from above
+Button("Play##foo2");  // Label = "Play",   ID = hash of ("MyWindow", "Play##foo2")  // Different from above
+End();
+```
+- If you want to completely hide the label, but still need an ID:
+```c
+Checkbox("##On", &b);  // Label = "",       ID = hash of (..., "##On")   // No visible label, just a checkbox!
+```
+- Occasionally/rarely you might want change a label while preserving a constant ID. This allows
+you to animate labels. For example you may want to include varying information in a window title bar,
+but windows are uniquely identified by their ID. Use "###" to pass a label that isn't part of ID:
+```c
+Button("Hello###ID");  // Label = "Hello",  ID = hash of (..., "###ID")
+Button("World###ID");  // Label = "World",  ID = hash of (..., "###ID")  // Same as above, even if the label looks different
+
+sprintf(buf, "My game (%f FPS)###MyGame", fps);
+Begin(buf);            // Variable title,   ID = hash of "MyGame"
+```
+- Solving ID conflict in a more general manner:
+Use PushID() / PopID() to create scopes and manipulate the ID stack, as to avoid ID conflicts
+within the same window. This is the most convenient way of distinguishing ID when iterating and
+creating many UI elements programmatically.
+You can push a pointer, a string or an integer value into the ID stack.
+Remember that ID are formed from the concatenation of _everything_ pushed into the ID stack.
+At each level of the stack we store the seed used for items at this level of the ID stack.
+```c
+Begin("Window");
+for (int i = 0; i < 100; i++)
+{
+  PushID(i);           // Push i to the id tack
+  Button("Click");     // Label = "Click",  ID = hash of ("Window", i, "Click")
+  PopID();
+}
+for (int i = 0; i < 100; i++)
+{
+  MyObject* obj = Objects[i];
+  PushID(obj);
+  Button("Click");     // Label = "Click",  ID = hash of ("Window", obj pointer, "Click")
+  PopID();
+}
+for (int i = 0; i < 100; i++)
+{
+  MyObject* obj = Objects[i];
+  PushID(obj->Name);
+  Button("Click");     // Label = "Click",  ID = hash of ("Window", obj->Name, "Click")
+  PopID();
+}
+End();
+```
+- You can stack multiple prefixes into the ID stack:
+```c
+Button("Click");       // Label = "Click",  ID = hash of (..., "Click")
+PushID("node");
+  Button("Click");     // Label = "Click",  ID = hash of (..., "node", "Click")
+  PushID(my_ptr);
+    Button("Click");   // Label = "Click",  ID = hash of (..., "node", my_ptr, "Click")
+  PopID();
+PopID();
+```
+- Tree nodes implicitly creates a scope for you by calling PushID().
+```c
+Button("Click");       // Label = "Click",  ID = hash of (..., "Click")
+if (TreeNode("node"))  // <-- this function call will do a PushID() for you (unless instructed not to, with a special flag)
+{
+  Button("Click");     // Label = "Click",  ID = hash of (..., "node", "Click")
+  TreePop();
+}
+```
+- When working with trees, ID are used to preserve the open/close state of each tree node.
+Depending on your use cases you may want to use strings, indices or pointers as ID.
+e.g. when following a single pointer that may change over time, using a static string as ID
+will preserve your node open/closed state when the targeted object change.
+e.g. when displaying a list of objects, using indices or pointers as ID will preserve the
+node open/closed state differently. See what makes more sense in your situation!
+
+##### [Return to Index](#index)
+
+---
+
+### Q: How can I display an image? What is ImTextureID, how does it work?
+
+Short explanation:
+- Refer to [Image Loading and Displaying Examples](https://github.com/ocornut/imgui/wiki/Image-Loading-and-Displaying-Examples) on the [Wiki](https://github.com/ocornut/imgui/wiki).
+- You may use functions such as `ImGui::Image()`, `ImGui::ImageButton()` or lower-level `ImDrawList::AddImage()` to emit draw calls that will use your own textures.
+- Actual textures are identified in a way that is up to the user/engine. Those identifiers are stored and passed as ImTextureID (void*) value.
+- Loading image files from the disk and turning them into a texture is not within the scope of Dear ImGui (for a good reason).
+
+**Please read documentations or tutorials on your graphics API to understand how to display textures on the screen before moving onward.**
+
+Long explanation:
+- Dear ImGui's job is to create "meshes", defined in a renderer-agnostic format made of draw commands and vertices. At the end of the frame those meshes (ImDrawList) will be displayed by your rendering function. They are made up of textured polygons and the code to render them is generally fairly short (a few dozen lines). In the examples/ folder we provide functions for popular graphics API (OpenGL, DirectX, etc.).
+- Each rendering function decides on a data type to represent "textures". The concept of what is a "texture" is entirely tied to your underlying engine/graphics API.
+ We carry the information to identify a "texture" in the ImTextureID type.
+ImTextureID is nothing more that a void*, aka 4/8 bytes worth of data: just enough to store 1 pointer or 1 integer of your choice.
+Dear ImGui doesn't know or understand what you are storing in ImTextureID, it merely pass ImTextureID values until they reach your rendering function.
+- In the [examples/](https://github.com/ocornut/imgui/tree/master/examples) bindings, for each graphics API binding we decided on a type that is likely to be a good representation for specifying an image from the end-user perspective. This is what the _examples_ rendering functions are using:
+```
+OpenGL:
+- ImTextureID = GLuint
+- See ImGui_ImplOpenGL3_RenderDrawData() function in imgui_impl_opengl3.cpp
+```
+```
+DirectX9:
+- ImTextureID = LPDIRECT3DTEXTURE9
+- See ImGui_ImplDX9_RenderDrawData() function in imgui_impl_dx9.cpp
+```
+```
+DirectX11:
+- ImTextureID = ID3D11ShaderResourceView*
+- See ImGui_ImplDX11_RenderDrawData() function in imgui_impl_dx11.cpp
+```
+```
+DirectX12:
+- ImTextureID = D3D12_GPU_DESCRIPTOR_HANDLE
+- See ImGui_ImplDX12_RenderDrawData() function in imgui_impl_dx12.cpp
+```
+For example, in the OpenGL example binding we store raw OpenGL texture identifier (GLuint) inside ImTextureID.
+Whereas in the DirectX11 example binding we store a pointer to ID3D11ShaderResourceView inside ImTextureID, which is a higher-level structure tying together both the texture and information about its format and how to read it.
+
+- If you have a custom engine built over e.g. OpenGL, instead of passing GLuint around you may decide to use a high-level data type to carry information about the texture as well as how to display it (shaders, etc.). The decision of what to use as ImTextureID can always be made better knowing how your codebase is designed. If your engine has high-level data types for "textures" and "material" then you may want to use them.
+If you are starting with OpenGL or DirectX or Vulkan and haven't built much of a rendering engine over them, keeping the default ImTextureID representation suggested by the example bindings is probably the best choice.
+(Advanced users may also decide to keep a low-level type in ImTextureID, and use ImDrawList callback and pass information to their renderer)
+
+User code may do:
+```cpp
+// Cast our texture type to ImTextureID / void*
+MyTexture* texture = g_CoffeeTableTexture;
+ImGui::Image((void*)texture, ImVec2(texture->Width, texture->Height));
+```
+The renderer function called after ImGui::Render() will receive that same value that the user code passed:
+```cpp
+// Cast ImTextureID / void* stored in the draw command as our texture type
+MyTexture* texture = (MyTexture*)pcmd->TextureId;
+MyEngineBindTexture2D(texture);
+```
+Once you understand this design you will understand that loading image files and turning them into displayable textures is not within the scope of Dear ImGui.
+This is by design and is actually a good thing, because it means your code has full control over your data types and how you display them.
+If you want to display an image file (e.g. PNG file) into the screen, please refer to documentation and tutorials for the graphics API you are using.
+
+Refer to [Image Loading and Displaying Examples](https://github.com/ocornut/imgui/wiki/Image-Loading-and-Displaying-Examples) on the [Wiki](https://github.com/ocornut/imgui/wiki) to find simplified examples for loading textures with OpenGL, DirectX9 and DirectX11.
+
+C/C++ tip: a void* is pointer-sized storage. You may safely store any pointer or integer into it by casting your value to ImTextureID / void*, and vice-versa.
+Because both end-points (user code and rendering function) are under your control, you know exactly what is stored inside the ImTextureID / void*.
+Examples:
+```cpp
+GLuint my_tex = XXX;
+void* my_void_ptr;
+my_void_ptr = (void*)(intptr_t)my_tex;                  // cast a GLuint into a void* (we don't take its address! we literally store the value inside the pointer)
+my_tex = (GLuint)(intptr_t)my_void_ptr;                 // cast a void* into a GLuint
+
+ID3D11ShaderResourceView* my_dx11_srv = XXX;
+void* my_void_ptr;
+my_void_ptr = (void*)my_dx11_srv;                       // cast a ID3D11ShaderResourceView* into an opaque void*
+my_dx11_srv = (ID3D11ShaderResourceView*)my_void_ptr;   // cast a void* into a ID3D11ShaderResourceView*
+```
+Finally, you may call `ImGui::ShowMetricsWindow()` to explore/visualize/understand how the ImDrawList are generated.
+
+##### [Return to Index](#index)
+
+---
+
+### Q: How can I use my own math types instead of ImVec2/ImVec4?
+
+You can edit [imconfig.h](https://github.com/ocornut/imgui/blob/master/imconfig.h) and setup the `IM_VEC2_CLASS_EXTRA`/`IM_VEC4_CLASS_EXTRA` macros to add implicit type conversions.
+This way you'll be able to use your own types everywhere, e.g. passing `MyVector2` or `glm::vec2` to ImGui functions instead of `ImVec2`.
+
+##### [Return to Index](#index)
+
+---
+
+### Q: How can I interact with standard C++ types (such as std::string and std::vector)?
+- Being highly portable (bindings for several languages, frameworks, programming style, obscure or older platforms/compilers), and aiming for compatibility & performance suitable for every modern real-time game engines, dear imgui does not use any of std C++ types. We use raw types (e.g. char* instead of std::string) because they adapt to more use cases.
+- To use ImGui::InputText() with a std::string or any resizable string class, see [misc/cpp/imgui_stdlib.h](https://github.com/ocornut/imgui/blob/master/misc/cpp/imgui_stdlib.h).
+- To use combo boxes and list boxes with `std::vector` or any other data structure: the `BeginCombo()/EndCombo()` API
+lets you iterate and submit items yourself, so does the `ListBoxHeader()/ListBoxFooter()` API.
+Prefer using them over the old and awkward `Combo()/ListBox()` api.
+- Generally for most high-level types you should be able to access the underlying data type.
+You may write your own one-liner wrappers to facilitate user code (tip: add new functions in ImGui:: namespace from your code).
+- Dear ImGui applications often need to make intensive use of strings. It is expected that many of the strings you will pass
+to the API are raw literals (free in C/C++) or allocated in a manner that won't incur a large cost on your application.
+Please bear in mind that using `std::string` on applications with large amount of UI may incur unsatisfactory performances.
+Modern implementations of `std::string` often include small-string optimization (which is often a local buffer) but those
+are not configurable and not the same across implementations.
+- If you are finding your UI traversal cost to be too large, make sure your string usage is not leading to excessive amount
+of heap allocations. Consider using literals, statically sized buffers and your own helper functions. A common pattern
+is that you will need to build lots of strings on the fly, and their maximum length can be easily be scoped ahead.
+One possible implementation of a helper to facilitate printf-style building of strings: https://github.com/ocornut/Str
+This is a small helper where you can instance strings with configurable local buffers length. Many game engines will
+provide similar or better string helpers.
+
+##### [Return to Index](#index)
+
+---
+
+### Q: How can I display custom shapes? (using low-level ImDrawList API)
+
+- You can use the low-level `ImDrawList` api to render shapes within a window.
+
+```
+ImGui::Begin("My shapes");
+
+ImDrawList* draw_list = ImGui::GetWindowDrawList();
+
+// Get the current ImGui cursor position
+ImVec2 p = ImGui::GetCursorScreenPos();
+
+// Draw a red circle
+draw_list->AddCircleFilled(ImVec2(p.x + 50, p.y + 50), 30.0f, IM_COL32(255, 0, 0, 255), 16);
+
+// Draw a 3 pixel thick yellow line
+draw_list->AddLine(ImVec2(p.x, p.y), ImVec2(p.x + 100.0f, p.y + 100.0f), IM_COL32(255, 255, 0, 255), 3.0f);
+
+// Advance the ImGui cursor to claim space in the window (otherwise the window will appears small and needs to be resized)
+ImGui::Dummy(ImVec2(200, 200));
+
+ImGui::End();
+```
+![ImDrawList usage](https://raw.githubusercontent.com/wiki/ocornut/imgui/tutorials/CustomRendering01.png)
+
+- Refer to "Demo > Examples > Custom Rendering" in the demo window and read the code of `ShowExampleAppCustomRendering()` in `imgui_demo.cpp` from more examples.
+- To generate colors: you can use the macro `IM_COL32(255,255,255,255)` to generate them at compile time, or use `ImGui::GetColorU32(IM_COL32(255,255,255,255))` or `ImGui::GetColorU32(ImVec4(1.0f,1.0f,1.0f,1.0f))` to generate a color that is multiplied by the current value of `style.Alpha`.
+- Math operators: if you have setup `IM_VEC2_CLASS_EXTRA` in `imconfig.h` to bind your own math types, you can use your own math types and their natural operators instead of ImVec2. ImVec2 by default doesn't export any math operators in the public API. You may use `#define IMGUI_DEFINE_MATH_OPERATORS` `#include "imgui_internal.h"` to use the internally defined math operators, but instead prefer using your own math library and set it up in `imconfig.h`.
+- You can use `ImGui::GetBackgroundDrawList()` or `ImGui::GetForegroundDrawList()` to access draw lists which will be displayed behind and over every other dear imgui windows (one bg/fg drawlist per viewport). This is very convenient if you need to quickly display something on the screen that is not associated to a dear imgui window.
+- You can also create your own dummy window and draw inside it. Call Begin() with the NoBackground | NoDecoration | NoSavedSettings | NoInputs flags (The `ImGuiWindowFlags_NoDecoration` flag itself is a shortcut for NoTitleBar | NoResize | NoScrollbar | NoCollapse). Then you can retrieve the ImDrawList* via GetWindowDrawList() and draw to it in any way you like.
+- You can create your own ImDrawList instance. You'll need to initialize them with `ImGui::GetDrawListSharedData()`, or create your own instancing ImDrawListSharedData, and then call your renderer function with your own ImDrawList or ImDrawData data.
+
+##### [Return to Index](#index)
+
+---
+
+# Q&A: Fonts, Text
+
+### Q: How can I load a different font than the default?
+Use the font atlas to load the TTF/OTF file you want:
+
+```c
+ImGuiIO& io = ImGui::GetIO();
+io.Fonts->AddFontFromFileTTF("myfontfile.ttf", size_in_pixels);
+io.Fonts->GetTexDataAsRGBA32() or GetTexDataAsAlpha8()
+```
+
+Default is ProggyClean.ttf, monospace, rendered at size 13, embedded in dear imgui's source code.
+
+(Tip: monospace fonts are convenient because they allow to facilitate horizontal alignment directly at the string level.)
+
+(Read the [docs/FONTS.txt](https://github.com/ocornut/imgui/blob/master/docs/FONTS.txt) file for more details about font loading.)
+
+New programmers: remember that in C/C++ and most programming languages if you want to use a
+backslash \ within a string literal, you need to write it double backslash "\\":
+
+```c
+io.Fonts->AddFontFromFileTTF("MyFolder\MyFont.ttf", size);  // WRONG (you are escaping the M here!)
+io.Fonts->AddFontFromFileTTF("MyFolder\\MyFont.ttf", size;  // CORRECT
+io.Fonts->AddFontFromFileTTF("MyFolder/MyFont.ttf", size);  // ALSO CORRECT
+```
+
+##### [Return to Index](#index)
+
+---
+
+### Q: How can I easily use icons in my application?
+The most convenient and practical way is to merge an icon font such as FontAwesome inside you
+main font. Then you can refer to icons within your strings.
+You may want to see `ImFontConfig::GlyphMinAdvanceX` to make your icon look monospace to facilitate alignment.
+(Read the [docs/FONTS.txt](https://github.com/ocornut/imgui/blob/master/docs/FONTS.txt) file for more details about icons font loading.)
+With some extra effort, you may use colorful icon by registering custom rectangle space inside the font atlas,
+and copying your own graphics data into it. See docs/FONTS.txt about using the AddCustomRectFontGlyph API.
+
+##### [Return to Index](#index)
+
+---
+
+### Q: How can I load multiple fonts?
+Use the font atlas to pack them into a single texture:
+(Read the [docs/FONTS.txt](https://github.com/ocornut/imgui/blob/master/docs/FONTS.txt) file and the code in ImFontAtlas for more details.)
+
+```cpp
+ImGuiIO& io = ImGui::GetIO();
+ImFont* font0 = io.Fonts->AddFontDefault();
+ImFont* font1 = io.Fonts->AddFontFromFileTTF("myfontfile.ttf", size_in_pixels);
+ImFont* font2 = io.Fonts->AddFontFromFileTTF("myfontfile2.ttf", size_in_pixels);
+io.Fonts->GetTexDataAsRGBA32() or GetTexDataAsAlpha8()
+// the first loaded font gets used by default
+// use ImGui::PushFont()/ImGui::PopFont() to change the font at runtime
+
+// Options
+ImFontConfig config;
+config.OversampleH = 2;
+config.OversampleV = 1;
+config.GlyphOffset.y -= 1.0f;      // Move everything by 1 pixels up
+config.GlyphExtraSpacing.x = 1.0f; // Increase spacing between characters
+io.Fonts->AddFontFromFileTTF("myfontfile.ttf", size_pixels, &config);
+
+// Combine multiple fonts into one (e.g. for icon fonts)
+static ImWchar ranges[] = { 0xf000, 0xf3ff, 0 };
+ImFontConfig config;
+config.MergeMode = true;
+io.Fonts->AddFontDefault();
+io.Fonts->AddFontFromFileTTF("fontawesome-webfont.ttf", 16.0f, &config, ranges); // Merge icon font
+io.Fonts->AddFontFromFileTTF("myfontfile.ttf", size_pixels, NULL, &config, io.Fonts->GetGlyphRangesJapanese()); // Merge japanese glyphs
+```
+
+##### [Return to Index](#index)
+
+---
+
+### Q: How can I display and input non-Latin characters such as Chinese, Japanese, Korean, Cyrillic?
+When loading a font, pass custom Unicode ranges to specify the glyphs to load.
+
+```cpp
+// Add default Japanese ranges
+io.Fonts->AddFontFromFileTTF("myfontfile.ttf", size_in_pixels, NULL, io.Fonts->GetGlyphRangesJapanese());
+
+// Or create your own custom ranges (e.g. for a game you can feed your entire game script and only build the characters the game need)
+ImVector<ImWchar> ranges;
+ImFontGlyphRangesBuilder builder;
+builder.AddText("Hello world");                        // Add a string (here "Hello world" contains 7 unique characters)
+builder.AddChar(0x7262);                               // Add a specific character
+builder.AddRanges(io.Fonts->GetGlyphRangesJapanese()); // Add one of the default ranges
+builder.BuildRanges(&ranges);                          // Build the final result (ordered ranges with all the unique characters submitted)
+io.Fonts->AddFontFromFileTTF("myfontfile.ttf", 16.0f, NULL, ranges.Data);
+```
+
+All your strings needs to use UTF-8 encoding. In C++11 you can encode a string literal in UTF-8
+by using the u8"hello" syntax. Specifying literal in your source code using a local code page
+(such as CP-923 for Japanese or CP-1251 for Cyrillic) will NOT work!
+Otherwise you can convert yourself to UTF-8 or load text data from file already saved as UTF-8.
+
+Text input: it is up to your application to pass the right character code by calling `io.AddInputCharacter()`.
+The applications in examples/ are doing that.
+Windows: you can use the WM_CHAR or WM_UNICHAR or WM_IME_CHAR message (depending if your app is built using Unicode or MultiByte mode).
+You may also use MultiByteToWideChar() or ToUnicode() to retrieve Unicode codepoints from MultiByte characters or keyboard state.
+Windows: if your language is relying on an Input Method Editor (IME), you copy the HWND of your window to io.ImeWindowHandle in order for
+the default implementation of io.ImeSetInputScreenPosFn() to set your Microsoft IME position correctly.
+
+##### [Return to Index](#index)
+
+---
+
+# Q&A: Concerns
+
+### Q: Who uses Dear ImGui?
+
+You may take a look at:
+
+- [Quotes](https://github.com/ocornut/imgui/wiki/Quotes)
+- [Software using Dear ImGui](https://github.com/ocornut/imgui/wiki/Software-using-dear-imgui)
+- [Gallery](https://github.com/ocornut/imgui/issues/2847)
+
+##### [Return to Index](#index)
+
+---
+
+### Q: Can you create elaborate/serious tools with Dear ImGui?
+
+Yes. People have written game editors, data browsers, debuggers, profilers and all sort of non-trivial tools with the library. In my experience the simplicity of the API is very empowering. Your UI runs close to your live data. Make the tools always-on and everybody in the team will be inclined to create new tools (as opposed to more "offline" UI toolkits where only a fraction of your team effectively creates tools). The list of sponsors below is also an indicator that serious game teams have been using the library.
+
+Dear ImGui is very programmer centric and the immediate-mode GUI paradigm might require you to readjust some habits before you can realize its full potential. Dear ImGui is about making things that are simple, efficient and powerful.
+
+Dear ImGui is built to be efficient and scalable toward the needs for AAA-quality applications running all day. The IMGUI paradigm offers different opportunities for optimization that the more typical RMGUI paradigm.
+
+##### [Return to Index](#index)
+
+---
+
+### Q: Can you reskin the look of Dear ImGui?
+
+Somehow. You can alter the look of the interface to some degree: changing colors, sizes, padding, rounding, fonts. However, as Dear ImGui is designed and optimized to create debug tools, the amount of skinning you can apply is limited. There is only so much you can stray away from the default look and feel of the interface. Dear ImGui is NOT designed to create user interface for games, although with ingenious use of the low-level API you can do it.
+
+A reasonably skinned application may look like (screenshot from [#2529](https://github.com/ocornut/imgui/issues/2529#issuecomment-524281119))
+![minipars](https://user-images.githubusercontent.com/314805/63589441-d9794f00-c5b1-11e9-8d96-cfc1b93702f7.png)
+
+##### [Return to Index](#index)
+
+---
+
+### Q: Why using C++ (as opposed to C)?
+
+Dear ImGui takes advantage of a few C++ languages features for convenience but nothing anywhere Boost insanity/quagmire. Dear ImGui does NOT require C++11 so it can be used with most old C++ compilers. Dear ImGui doesn't use any C++ header file. Language-wise, function overloading and default parameters are used to make the API easier to use and code more terse. Doing so I believe the API is sitting on a sweet spot and giving up on those features would make the API more cumbersome. Other features such as namespace, constructors and templates (in the case of the ImVector<> class) are also relied on as a convenience.
+
+There is an auto-generated [c-api for Dear ImGui (cimgui)](https://github.com/cimgui/cimgui) by Sonoro1234 and Stephan Dilly. It is designed for creating binding to other languages. If possible, I would suggest using your target language functionalities to try replicating the function overloading and default parameters used in C++ else the API may be harder to use. Also see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for various third-party bindings.
+
+##### [Return to Index](#index)
+
+---
+
+# Q&A: Community
+
+### Q: How can I help?
+- Businesses: please reach out to `contact AT dearimgui.org` if you work in a place using Dear ImGui! We can discuss ways for your company to fund development via invoiced technical support, maintenance or sponsoring contacts. This is among the most useful thing you can do for Dear ImGui. With increased funding we can hire more people working on this project.
+- Individuals: you can support continued maintenance and development via PayPal donations. See [README](https://github.com/ocornut/imgui/blob/master/docs/README.md).
+- If you are experienced with Dear ImGui and C++, look at the [GitHub Issues](https://github.com/ocornut/imgui/issues), look at the [Wiki](https://github.com/ocornut/imgui/wiki), read [docs/TODO.txt](https://github.com/ocornut/imgui/blob/master/docs/TODO.txt) and see how you want to help and can help!
+- Disclose your usage of Dear ImGui via a dev blog post, a tweet, a screenshot, a mention somewhere etc.
+You may post screenshot or links in the [gallery threads](https://github.com/ocornut/imgui/issues/2847). Visuals are ideal as they inspire other programmers. Disclosing your use of dear imgui help the library grow credibility, and help other teams and programmers with taking decisions.
+- If you have issues or if you need to hack into the library, even if you don't expect any support it is useful that you share your issues or sometimes incomplete PR.
+
+##### [Return to Index](#index)
+

docs/FONTS.txt

@@ -1,9 +1,7 @@
-----------------------------------------------------------------------
- dear imgui, v1.73
-----------------------------------------------------------------------
- misc/fonts/README.txt
- This is the Readme dedicated to fonts.
-----------------------------------------------------------------------
+dear imgui
+FONTS DOCUMENTATION
+
+Also read https://www.dearimgui.org/faq for more fonts related infos.
 
 The code in imgui.cpp embeds a copy of 'ProggyClean.ttf' (by Tristan Grimmer),
 a 13 pixels high, pixel-perfect font used by default.
@@ -12,11 +10,8 @@ We embed it font in source code so you can use Dear ImGui without any file syste
 You may also load external .TTF/.OTF files.
 The files in this folder are suggested fonts, provided as a convenience.
 
-Fonts are rasterized in a single texture at the time of calling either of io.Fonts->GetTexDataAsAlpha8()/GetTexDataAsRGBA32()/Build().
-Also read dear imgui FAQ in imgui.cpp!
-
-If you have other loading/merging/adding fonts, you can post on the Dear ImGui "Getting Started" forum:
-  https://discourse.dearimgui.org/c/getting-started
+Please read the FAQ: https://www.dearimgui.org/faq
+Please use the Discord server: http://discord.dearimgui.org and not the Github issue tracker for basic font loading questions.
 
 
 ---------------------------------------
@@ -24,13 +19,13 @@ If you have other loading/merging/adding fonts, you can post on the Dear ImGui "
 ---------------------------------------
 
 - Readme First / FAQ
-- Using Icons
 - Fonts Loading Instructions
-- FreeType rasterizer, Small font sizes
+- Using Icons
+- Using FreeType rasterizer
 - Building Custom Glyph Ranges
 - Using custom colorful icons
 - Embedding Fonts in Source Code
-- Credits/Licences for fonts included in this folder
+- Credits/Licences for fonts included in repository
 - Fonts Links
 
 
@@ -40,53 +35,13 @@ If you have other loading/merging/adding fonts, you can post on the Dear ImGui "
 
 - You can use the style editor ImGui::ShowStyleEditor() in the "Fonts" section to browse your fonts
   and understand what's going on if you have an issue.
-- Make sure your font ranges data are persistent (available during the call to GetTexDataAsAlpha8()/GetTexDataAsRGBA32()/Build().
+- Fonts are rasterized in a single texture at the time of calling either of io.Fonts->GetTexDataAsAlpha8()/GetTexDataAsRGBA32()/Build().
+- Make sure your font ranges data are persistent and available at the time the font atlas is being built.
 - Use C++11 u8"my text" syntax to encode literal strings as UTF-8. e.g.:
       u8"hello"
       u8"こんにちは"   // this will be encoded as UTF-8
 - If you want to include a backslash \ character in your string literal, you need to double them e.g. "folder\\filename".
-- Please use the Discourse forum (https://discourse.dearimgui.org) and not the Github issue tracker for basic font loading questions.
-
-
----------------------------------------
- USING ICONS
----------------------------------------
-
-Using an icon font (such as FontAwesome: http://fontawesome.io or OpenFontIcons. https://github.com/traverseda/OpenFontIcons)
-is an easy and practical way to use icons in your Dear ImGui application.
-A common pattern is to merge the icon font within your main font, so you can embed icons directly from your strings without
-having to change fonts back and forth.
-
-To refer to the icon UTF-8 codepoints from your C++ code, you may use those headers files created by Juliette Foucaut:
-  https://github.com/juliettef/IconFontCppHeaders
-
-The C++11 version of those files uses the u8"" utf-8 encoding syntax + \u
-  #define ICON_FA_SEARCH  u8"\uf002"
-The pre-C++11 version has the values directly encoded as utf-8:
-  #define ICON_FA_SEARCH  "\xEF\x80\x82"
-
-Example Setup:
-
-  // Merge icons into default tool font
-  #include "IconsFontAwesome.h"
-  ImGuiIO& io = ImGui::GetIO();
-  io.Fonts->AddFontDefault();
-
-  ImFontConfig config;
-  config.MergeMode = true;
-  config.GlyphMinAdvanceX = 13.0f; // Use if you want to make the icon monospaced
-  static const ImWchar icon_ranges[] = { ICON_MIN_FA, ICON_MAX_FA, 0 };
-  io.Fonts->AddFontFromFileTTF("fonts/fontawesome-webfont.ttf", 13.0f, &config, icon_ranges);
-
-Example Usage:
-
-  // Usage, e.g.
-  ImGui::Text("%s among %d items", ICON_FA_SEARCH, count);
-  ImGui::Button(ICON_FA_SEARCH " Search");
-  // C string _literals_ can be concatenated at compilation time, e.g. "hello" " world"
-  // ICON_FA_SEARCH is defined as a string literal so this is the same as "A" "B" becoming "AB"
-
-See Links below for other icons fonts and related tools.
+  Read FAQ for details.
 
 
 ---------------------------------------
@@ -100,6 +55,11 @@ Load default font:
 
 Load .TTF/.OTF file with:
 
+  ImGuiIO& io = ImGui::GetIO();
+  io.Fonts->AddFontFromFileTTF("font.ttf", size_pixels);
+
+Load multiple fonts:
+
   ImGuiIO& io = ImGui::GetIO();
   ImFont* font1 = io.Fonts->AddFontFromFileTTF("font.ttf", size_pixels);
   ImFont* font2 = io.Fonts->AddFontFromFileTTF("anotherfont.otf", size_pixels);
@@ -118,23 +78,6 @@ For advanced options create a ImFontConfig structure and pass it to the AddFont
   config.GlyphExtraSpacing.x = 1.0f;
   ImFont* font = io.Fonts->AddFontFromFileTTF("font.ttf", size_pixels, &config);
 
-Read about oversampling here:
-  https://github.com/nothings/stb/blob/master/tests/oversample
-
-If you have very large number of glyphs or multiple fonts, the texture may become too big for your graphics API.
-The typical result of failing to upload a texture is if every glyphs appears as white rectangles.
-In particular, using a large range such as GetGlyphRangesChineseSimplifiedCommon() is not recommended unless you
-set OversampleH/OversampleV to 1 and use a small font size.
-Mind the fact that some graphics drivers have texture size limitation.
-If you are building a PC application, mind the fact that your users may use hardware with lower limitations than yours.
-Some solutions:
-
- - 1) Reduce glyphs ranges by calculating them from source localization data.
-   You can use ImFontGlyphRangesBuilder for this purpose, this will be the biggest win!
- - 2) You may reduce oversampling, e.g. config.OversampleH = config.OversampleV = 1, this will largely reduce your texture size.
- - 3) Set io.Fonts.TexDesiredWidth to specify a texture width to minimize texture height (see comment in ImFontAtlas::Build function).
- - 4) Set io.Fonts.Flags |= ImFontAtlasFlags_NoPowerOfTwoHeight; to disable rounding the texture height to the next power of two.
-
 Combine two fonts into one:
 
   // Load a first font
@@ -150,6 +93,25 @@ Combine two fonts into one:
   io.Fonts->AddFontFromFileTTF("fontawesome-webfont.ttf", 18.0f, &config, icons_ranges);
   io.Fonts->Build();
 
+Font atlas is too large?
+
+- If you have very large number of glyphs or multiple fonts, the texture may become too big for your graphics API.
+- The typical result of failing to upload a texture is if every glyphs appears as white rectangles.
+- In particular, using a large range such as GetGlyphRangesChineseSimplifiedCommon() is not recommended
+  unless you set OversampleH/OversampleV to 1 and use a small font size.
+- Mind the fact that some graphics drivers have texture size limitation.
+- If you are building a PC application, mind the fact that users may run on hardware with lower specs than yours.
+
+Some solutions:
+
+ - 1) Reduce glyphs ranges by calculating them from source localization data.
+   You can use ImFontGlyphRangesBuilder for this purpose, this will be the biggest win!
+ - 2) You may reduce oversampling, e.g. config.OversampleH = config.OversampleV = 1, this will largely reduce your texture size.
+ - 3) Set io.Fonts.TexDesiredWidth to specify a texture width to minimize texture height (see comment in ImFontAtlas::Build function).
+ - 4) Set io.Fonts.Flags |= ImFontAtlasFlags_NoPowerOfTwoHeight; to disable rounding the texture height to the next power of two.
+ - Read about oversampling here: https://github.com/nothings/stb/blob/master/tests/oversample
+
+
 Add a fourth parameter to bake specific font ranges only:
 
   // Basic Latin, Extended Latin
@@ -168,6 +130,49 @@ Offset font vertically by altering the io.Font->DisplayOffset value:
   font->DisplayOffset.y = 1;   // Render 1 pixel down
 
 
+---------------------------------------
+ USING ICONS
+---------------------------------------
+
+Using an icon font (such as FontAwesome: http://fontawesome.io or OpenFontIcons. https://github.com/traverseda/OpenFontIcons)
+is an easy and practical way to use icons in your Dear ImGui application.
+A common pattern is to merge the icon font within your main font, so you can embed icons directly from your strings without
+having to change fonts back and forth.
+
+To refer to the icon UTF-8 codepoints from your C++ code, you may use those headers files created by Juliette Foucaut:
+
+  https://github.com/juliettef/IconFontCppHeaders
+
+Those files contains a bunch of named #define which you can use to refer to specific icons of the font, e.g.:
+
+  #define ICON_FA_MUSIC   "\xef\x80\x81"
+  #define ICON_FA_SEARCH  "\xef\x80\x82"
+
+Example Setup:
+
+  // Merge icons into default tool font
+  #include "IconsFontAwesome.h"
+  ImGuiIO& io = ImGui::GetIO();
+  io.Fonts->AddFontDefault();
+
+  ImFontConfig config;
+  config.MergeMode = true;
+  config.GlyphMinAdvanceX = 13.0f; // Use if you want to make the icon monospaced
+  static const ImWchar icon_ranges[] = { ICON_MIN_FA, ICON_MAX_FA, 0 };
+  io.Fonts->AddFontFromFileTTF("fonts/fontawesome-webfont.ttf", 13.0f, &config, icon_ranges);
+
+Example Usage:
+
+  // Usage, e.g.
+  ImGui::Text("%s among %d items", ICON_FA_SEARCH, count);
+  ImGui::Button(ICON_FA_SEARCH " Search");
+
+Important to understand: C string _literals_ can be concatenated at compilation time, e.g. "hello" " world"
+ICON_FA_SEARCH is defined as a string literal so this is the same as "A" "B" becoming "AB"
+
+See Links below for other icons fonts and related tools.
+
+
 ---------------------------------------
  FREETYPE RASTERIZER, SMALL FONT SIZES
 ---------------------------------------
@@ -261,9 +266,11 @@ or:
 
 
 ---------------------------------------
- CREDITS/LICENSES FOR FONTS INCLUDED IN THIS FOLDER
+ CREDITS/LICENSES FOR FONTS INCLUDED IN REPOSITORY
 ---------------------------------------
 
+Some fonts are available in the misc/fonts/ folder:
+
 Roboto-Medium.ttf
 
   Apache License 2.0
@@ -336,15 +343,17 @@ REGULAR FONTS
   (Japanese) M+ fonts by Coji Morishita are free
   http://mplus-fonts.sourceforge.jp/mplus-outline-fonts/index-en.html
 
-MONOSPACE FONTS
+MONOSPACE FONTS (PIXEL PERFECT)
 
-  (Pixel Perfect) Proggy Fonts, by Tristan Grimmer
+  Proggy Fonts, by Tristan Grimmer
   http://www.proggyfonts.net or http://upperbounds.net
 
-  (Pixel Perfect) Sweet16, Sweet16 Mono, by Martin Sedlak (Latin + Supplemental + Extended A)
+  Sweet16, Sweet16 Mono, by Martin Sedlak (Latin + Supplemental + Extended A)
   https://github.com/kmar/Sweet16Font
   Also include .inl file to use directly in dear imgui.
 
+MONOSPACE FONTS (REGULAR)
+
   Google Noto Mono Fonts
   https://www.google.com/get/noto/
 

docs/README.md

@@ -1,18 +1,13 @@
 dear imgui
 =====
-[![Build Status](https://api.travis-ci.com/ocornut/imgui.svg?branch=master)](https://travis-ci.com/ocornut/imgui)
-[![Coverity Status](https://scan.coverity.com/projects/4720/badge.svg)](https://scan.coverity.com/projects/4720)
+[![Build Status](https://github.com/ocornut/imgui/workflows/build/badge.svg)](https://github.com/ocornut/imgui/actions?workflow=build)
 
-<sub>(This library is available under a free and permissive licence, but needs financial support to sustain its continued improvements. In addition to maintenance and stability there are many desirable features yet to be added. If your company is using dear imgui, please consider reaching out. If you are an individual using dear imgui, please consider supporting the project via Patreon or PayPal.)</sub>
+<sub>(This library is available under a free and permissive license, but needs financial support to sustain its continued improvements. In addition to maintenance and stability there are many desirable features yet to be added. If your company is using dear imgui, please consider reaching out.)</sub>
 
 Businesses: support continued development via invoiced technical support, maintenance, sponsoring contracts:
-<br>&nbsp;&nbsp;_E-mail: omarcornut at gmail dot com_
+<br>&nbsp;&nbsp;_E-mail: contact @ dearimgui dot org_
 
-Individuals/hobbyists: support continued maintenance and development via the monthly Patreon:
-<br>&nbsp;&nbsp;[![Patreon](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/patreon_02.png)](http://www.patreon.com/imgui)
-
-Individuals/hobbyists: support continued maintenance and development via PayPal:
-<br>&nbsp;&nbsp;[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=WGHNC6MBFLZ2S)
+Individuals: support continued maintenance and development via [PayPal](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=WGHNC6MBFLZ2S) donations.
 
 ----
 
@@ -29,36 +24,26 @@ Dear ImGui is particularly suited to integration in games engine (for tooling),
 
 ### Usage
 
-Dear ImGui is self-contained within a few files that you can easily copy and compile into your application/engine:
-- imgui.cpp
-- imgui.h
-- imgui_demo.cpp
-- imgui_draw.cpp
-- imgui_widgets.cpp
-- imgui_internal.h
-- imconfig.h (empty by default, user-editable)
-- imstb_rectpack.h
-- imstb_textedit.h
-- imstb_truetype.h
+**The core of Dear ImGui is self-contained within a few platform-agnostic files** which you can easily compile in your application/engine. They are all the files in the root folder of the repository (imgui.cpp, imgui.h, imgui_demo.cpp, imgui_draw.cpp etc.).
 
-No specific build process is required. You can add the .cpp files to your project or #include them from an existing file.
+**No specific build process is required**. You can add the .cpp files to your existing project.
 
-Backends for a variety of graphics api and rendering platforms along with example applications are provided in the [examples/](https://github.com/ocornut/imgui/tree/master/examples) folder.
+You will need a backend to integrate Dear ImGui in your app. The backend passes mouse/keyboard/gamepad inputs and variety of settings to Dear ImGui, and is in charge of rendering the resulting vertices.
 
-The backend passes mouse/keyboard/gamepad inputs and variety of settings to Dear ImGui, and is in charge of rendering the resulting vertices. After Dear ImGui is setup in your application, you can use it from \_anywhere\_ in your program loop:
+**Backends for a variety of graphics api and rendering platforms** are provided in the [examples/](https://github.com/ocornut/imgui/tree/master/examples) folder, along with example applications. See the [Integration](#integration) section of this document for details. You may also create your own backend. Anywhere where you can render textured triangles, you can render Dear ImGui.
+
+After Dear ImGui is setup in your application, you can use it from \_anywhere\_ in your program loop:
 
 Code:
 ```cp
 ImGui::Text("Hello, world %d", 123);
 if (ImGui::Button("Save"))
-{
-    // do stuff
-}
+    MySaveFunction();
 ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
 ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
 ```
 Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02.png)
+<br>![sample code output (dark)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v175/capture_readme_styles_0001.png) ![sample code output (light)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v175/capture_readme_styles_0002.png)
 <br>_(settings: Dark style (left), Light style (right) / Font: Roboto-Medium, 16px / Rounding: 5)_
 
 Code:
@@ -95,11 +80,11 @@ ImGui::End();
 Result:
 <br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_03_color.gif)
 
-Dear ImGui allows you **create elaborate tools** as well as very short-lived ones. On the extreme side of short-liveness: using the Edit&Continue (hot code reload) feature of modern compilers you can add a few widgets to tweaks variables while your application is running, and remove the code a minute later! Dear ImGui is not just for tweaking values. You can use it to trace a running algorithm by just emitting text commands. You can use it along with your own reflection data to browse your dataset live. You can use it to expose the internals of a subsystem in your engine, to create a logger, an inspection tool, a profiler, a debugger, an entire game making editor/framework, etc.
+Dear ImGui allows you **create elaborate tools** as well as very short-lived ones. On the extreme side of short-livedness: using the Edit&Continue (hot code reload) feature of modern compilers you can add a few widgets to tweaks variables while your application is running, and remove the code a minute later! Dear ImGui is not just for tweaking values. You can use it to trace a running algorithm by just emitting text commands. You can use it along with your own reflection data to browse your dataset live. You can use it to expose the internals of a subsystem in your engine, to create a logger, an inspection tool, a profiler, a debugger, an entire game making editor/framework, etc.
 
 ### How it works
 
-Check out the References section if you want to understand the core principles behind the IMGUI paradigm. An IMGUI tries to minimize superfluous state duplication, state synchronization and state retention from the user's point of view. It is less error prone (less code and less bugs) than traditional retained-mode interfaces, and lends itself to create dynamic user interfaces.
+Check out the Wiki's [About the IMGUI paradigm](https://github.com/ocornut/imgui/wiki#About-the-IMGUI-paradigm) section if you want to understand the core principles behind the IMGUI paradigm. An IMGUI tries to minimize superfluous state duplication, state synchronization and state retention from the user's point of view. It is less error prone (less code and less bugs) than traditional retained-mode interfaces, and lends itself to create dynamic user interfaces.
 
 Dear ImGui outputs vertex buffers and command lists that you can easily render in your application. The number of draw calls and state changes required to render them is fairly small. Because Dear ImGui doesn't know or touch graphics state directly, you can call its functions  anywhere in your code (e.g. in the middle of a running algorithm, or in the middle of your own rendering process). Refer to the sample applications in the examples/ folder for instructions on how to integrate dear imgui with your existing codebase.
 
@@ -107,79 +92,46 @@ _A common misunderstanding is to mistake immediate mode gui for immediate mode r
 
 ### Demo
 
-Calling the `ImGui::ShowDemoWindow()` function will create a demo window showcasing variety of features and examples.
+Calling the `ImGui::ShowDemoWindow()` function will create a demo window showcasing variety of features and examples. The code is always available for reference in `imgui_demo.cpp`.
 
 ![screenshot demo](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v167/v167-misc.png)
 
 You should be able to build the examples from sources (tested on Windows/Mac/Linux). If you don't, let me know! If you want to have a quick look at some Dear ImGui features, you can download Windows binaries of the demo app here:
-- [imgui-demo-binaries-20190715.zip](http://www.dearimgui.org/binaries/imgui-demo-binaries-20190715.zip) (Windows binaries, 1.72 WIP built 2019/07/15, master branch, 5 executables)
+- [imgui-demo-binaries-20190715.zip](http://www.dearimgui.org/binaries/imgui-demo-binaries-20190715.zip) (Windows binaries, 1.72 WIP, built 2019/07/15, master branch, 5 executables)
 
-The demo applications are unfortunately not yet DPI aware so expect some blurriness on a 4K screen. For DPI awareness in your application, you can load/reload your font at different scale, and scale your Style with `style.ScaleAllSizes()`.
+The demo applications are not DPI aware so expect some blurriness on a 4K screen. For DPI awareness in your application, you can load/reload your font at different scale, and scale your style with `style.ScaleAllSizes()`.
 
 ### Integration
 
-Integrating Dear ImGui within your custom engine is a matter of 1) wiring mouse/keyboard/gamepad inputs 2) uploading one texture to your GPU/render engine 3) providing a render function that can bind textures and render textured triangles. The [examples/](https://github.com/ocornut/imgui/tree/master/examples) folder is populated with applications doing just that. If you are an experienced programmer at ease with those concepts, it should take you about an hour to integrate Dear ImGui in your custom engine. Make sure to spend time reading the FAQ, the comments and other documentation!
+On most platforms and when using C++, **you should be able to use a combination of the [imgui_impl_xxxx](https://github.com/ocornut/imgui/tree/master/examples) files without modification** (e.g. `imgui_impl_win32.cpp` + `imgui_impl_dx11.cpp`). If your engine supports multiple platforms, consider using more of the imgui_impl_xxxx files instead of rewriting them: this will be less work for you and you can get Dear ImGui running immediately. You can _later_ decide to rewrite a custom binding using your custom engine functions if you wish so.
 
-_NB: those third-party bindings may be more or less maintained, more or less close to the original API (as people who create language bindings sometimes haven't used the C++ API themselves.. for the good reason that they aren't C++ users). Dear ImGui was designed with C++ in mind and some of the subtleties may be lost in translation with other languages. If your language supports it, I would suggest replicating the function overloading and default parameters used in the original, else the API may be harder to use. In doubt, please check the original C++ version first!_
+Integrating Dear ImGui within your custom engine is a matter of 1) wiring mouse/keyboard/gamepad inputs 2) uploading one texture to your GPU/render engine 3) providing a render function that can bind textures and render textured triangles. The [examples/](https://github.com/ocornut/imgui/tree/master/examples) folder is populated with applications doing just that. If you are an experienced programmer at ease with those concepts, it should take you less than two hours to integrate Dear ImGui in your custom engine. **Make sure to spend time reading the [FAQ](https://www.dearimgui.org/faq), comments, and some of the examples/ application!**
 
-Languages: (third-party bindings)
-- C: [cimgui](https://github.com/cimgui/cimgui) (2018: now auto-generated! you can use its json output to generate bindings for other languages)
-- C#/.Net: [ImGui.NET](https://github.com/mellinoe/ImGui.NET)
-- ChaiScript: [imgui-chaiscript](https://github.com/JuJuBoSc/imgui-chaiscript)
-- D: [DerelictImgui](https://github.com/Extrawurst/DerelictImgui)
-- Go: [imgui-go](https://github.com/inkyblackness/imgui-go) or [go-imgui](https://github.com/Armored-Dragon/go-imgui)
-- Haxe/hxcpp: [linc_imgui](https://github.com/Aidan63/linc_imgui)
-- Java: [jimgui](https://github.com/ice1000/jimgui)
-- JavaScript: [imgui-js](https://github.com/flyover/imgui-js)
-- Julia: [CImGui.jl](https://github.com/Gnimuc/CImGui.jl)
-- Lua: [LuaJIT-ImGui](https://github.com/sonoro1234/LuaJIT-ImGui), [imgui_lua_bindings](https://github.com/patrickriordan/imgui_lua_bindings) or [lua-ffi-bindings](https://github.com/thenumbernine/lua-ffi-bindings)
-- Odin: [odin-dear_imgui](https://github.com/ThisDrunkDane/odin-dear_imgui)
-- Pascal: [imgui-pas](https://github.com/dpethes/imgui-pas)
-- PureBasic: [pb-cimgui](https://github.com/hippyau/pb-cimgui)
-- Python: [pyimgui](https://github.com/swistakm/pyimgui) or [bimpy](https://github.com/podgorskiy/bimpy) or [ogre-imgui](https://github.com/OGRECave/ogre-imgui)
-- Ruby: [ruby-imgui](https://github.com/vaiorabbit/ruby-imgui)
-- Rust: [imgui-rs](https://github.com/Gekkio/imgui-rs) or [imgui-rust](https://github.com/nsf/imgui-rust)
-- Swift [swift-imgui](https://github.com/mnmly/Swift-imgui)
+Officially maintained bindings (in repository):
+- Renderers: DirectX9, DirectX10, DirectX11, DirectX12, OpenGL (legacy), OpenGL3/ES/ES2 (modern), Vulkan, Metal.
+- Platforms: GLFW, SDL2, Win32, Glut, OSX.
+- Frameworks: Emscripten, Allegro5, Marmalade.
 
-Frameworks:
-- Renderers: DirectX 9/10/11/12, Metal, OpenGL2, OpenGL3+/ES2/ES3, Vulkan: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Platform: GLFW, SDL, Win32, OSX, GLUT: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Framework: Allegro 5, Emscripten, Marmalade: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Unmerged PR: Android: [#421](https://github.com/ocornut/imgui/pull/421)
-- bsf: [bsfimgui](https://github.com/pgruenbacher/bsfImgui)
-- Cinder: [Cinder-ImGui](https://github.com/simongeilfus/Cinder-ImGui)
-- Cocos2d-x: [imguix](https://github.com/c0i/imguix), [#551](https://github.com/ocornut/imgui/issues/551)
-- Flexium: [FlexGUI](https://github.com/DXsmiley/FlexGUI)
-- GML/GameMakerStudio2: [ImGuiGML](https://marketplace.yoyogames.com/assets/6221/imguigml)
-- Irrlicht: [IrrIMGUI](https://github.com/ZahlGraf/IrrIMGUI)
-- Ogre: [ogre-imgui](https://github.com/OGRECave/ogre-imgui)
-- OpenFrameworks: [ofxImGui](https://github.com/jvcleave/ofxImGui)
-- OpenSceneGraph/OSG: [gist](https://gist.github.com/fulezi/d2442ca7626bf270226014501357042c)
-- ORX: [ImGuiOrx](https://github.com/thegwydd/ImGuiOrx), [#1843](https://github.com/ocornut/imgui/pull/1843)
-- px_render: [px_render_imgui.h](https://github.com/pplux/px/blob/master/px_render_imgui.h), [#1935](https://github.com/ocornut/imgui/pull/1935)
-- LÖVE+Lua: [love-imgui](https://github.com/slages/love-imgui)
-- Magnum: [ImGuiIntegration](https://doc.magnum.graphics/magnum/namespaceMagnum_1_1ImGuiIntegration.html) ([example](https://doc.magnum.graphics/magnum/examples-imgui.html))
-- NanoRT: [syoyo/imgui](https://github.com/syoyo/imgui/tree/nanort)
-- Qt: [imgui-qt3d](https://github.com/alpqr/imgui-qt3d) / [QOpenGLWindow (qtimgui)](https://github.com/ocornut/imgui/issues/1910) / [QtDirect3D](https://github.com/giladreich/QtDirect3D) / [qt6](https://github.com/alpqr/qvk6/tree/imgui/examples/rhi/imguidemo)
-- SFML: [imgui-sfml](https://github.com/eliasdaler/imgui-sfml)
-- Software renderer: [imgui_software_renderer](https://github.com/emilk/imgui_software_renderer)
-- Unreal Engine 4: [segross/UnrealImGui](https://github.com/segross/UnrealImGui) or [sronsse/UnrealEngine_ImGui](https://github.com/sronsse/UnrealEngine_ImGui)
+Third-party bindings (see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings/) page):
+- Languages: C, C#/.Net, ChaiScript, D, Go, Haskell, Haxe/hxcpp, Java, JavaScript, Julia, Kotlin, Lua, Odin, Pascal, PureBasic, Python, Ruby, Rust, Swift...
+- Frameworks: AGS/Adventure Game Studio, Amethyst, bsf, Cinder, Cocos2d-x, Diligent Engine, Flexium, GML/Game Maker Studio2, GTK3+OpenGL3, Irrlicht Engine, LÖVE+LUA, Magnum, NanoRT, Nim Game Lib, Ogre, openFrameworks, OSG/OpenSceneGraph, Orx, px_render, Qt/QtDirect3D, SFML, Sokol, Unreal Engine 4, vtk, Win32 GDI.
+- Note that C bindings ([cimgui](https://github.com/cimgui/cimgui)) are auto-generated, you can use its json/lua output to generate bindings for other languages.
 
-For other bindings: see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings/). Also see [Wiki](https://github.com/ocornut/imgui/wiki) for more links and ideas.
+Also see [Wiki](https://github.com/ocornut/imgui/wiki) for more links and ideas.
 
 ### Upcoming Changes
 
-Some of the goals for 2019 are:
+Some of the goals for 2020 are:
 - Finish work on docking, tabs. (see [#2109](https://github.com/ocornut/imgui/issues/2109), in public [docking](https://github.com/ocornut/imgui/tree/docking) branch looking for feedback)
 - Finish work on multiple viewports / multiple OS windows. (see [#1542](https://github.com/ocornut/imgui/issues/1542), in public [docking](https://github.com/ocornut/imgui/tree/docking) branch looking for feedback)
 - Finish work on gamepad/keyboard controls. (see [#787](https://github.com/ocornut/imgui/issues/787))
+- Finish work on new Tables API (to replace Columns). (see [#2957](https://github.com/ocornut/imgui/issues/2957))
 - Add an automation and testing system, both to test the library and end-user apps. (see [#435](https://github.com/ocornut/imgui/issues/435))
-- Make Columns better. They are currently pretty terrible! New Tables API coming Q4 2019!
 - Make the examples look better, improve styles, improve font support, make the examples hi-DPI and multi-DPI aware.
 
 ### Gallery
 
-For more user-submitted screenshots of projects using Dear ImGui, check out the [Gallery Threads](https://github.com/ocornut/imgui/issues/2529)!
+For more user-submitted screenshots of projects using Dear ImGui, check out the [Gallery Threads](https://github.com/ocornut/imgui/issues/2847)!
 
 Custom engine
 [![screenshot game](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v149/gallery_TheDragonsTrap-01-thumb.jpg)](https://cloud.githubusercontent.com/assets/8225057/20628927/33e14cac-b329-11e6-80f6-9524e93b048a.png)
@@ -188,38 +140,21 @@ Custom engine
 [![screenshot tool](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white_preview.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white.png)
 
 [Tracy Profiler](https://bitbucket.org/wolfpld/tracy)
-![tracy profiler](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v167/tracy_profiler.png)
-
-### References
-
-The Immediate Mode GUI paradigm may at first appear unusual to some users. This is mainly because "Retained Mode" GUIs have been so widespread and predominant. The following links can give you a better understanding about how Immediate Mode GUIs works.
-- [Johannes 'johno' Norneby's article](http://www.johno.se/book/imgui.html).
-- [A presentation by Rickard Gustafsson and Johannes Algelind](http://www.cse.chalmers.se/edu/year/2011/course/TDA361/Advanced%20Computer%20Graphics/IMGUI.pdf).
-- [Jari Komppa's tutorial on building an IMGUI library](http://iki.fi/sol/imgui/).
-- [Casey Muratori's original video that popularized the concept](https://mollyrocket.com/861).
-- [Nicolas Guillemot's CppCon'16 flash-talk about Dear ImGui](https://www.youtube.com/watch?v=LSRJ1jZq90k).
-- [Thierry Excoffier's Zero Memory Widget](http://perso.univ-lyon1.fr/thierry.excoffier/ZMW/).
-
-See the [Wiki](https://github.com/ocornut/imgui/wiki) for more references and [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to different languages and frameworks.
+![tracy profiler](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v173/tracy_profiler.jpg)
 
 ### Support, Frequently Asked Questions (FAQ)
 
-If you are new to Dear ImGui and have issues with: compiling, linking, adding fonts, wiring inputs, running or displaying Dear ImGui: you can use [Discord server](https://discord.gg/NgJ4SEP) or [Discourse forums](https://discourse.dearimgui.org).
+Most common questions will be answered by the [Frequently Asked Questions (FAQ)](https://github.com/ocornut/imgui/blob/master/docs/FAQ.md) page.
 
-Otherwise for any other questions, bug reports, requests, feedback, you may post on https://github.com/ocornut/imgui/issues. Please read and fill the New Issue template carefully.
+See: [Wiki](https://github.com/ocornut/imgui/wiki) for many links, references, articles.
 
-Private support is available for paying customers.
+See: [Articles about the IMGUI paradigm](https://github.com/ocornut/imgui/wiki#Articles-about-the-IMGUI-paradigm) to read/learn about the Immediate Mode GUI paradigm.
 
-**Where is the documentation?**
+If you are new to Dear ImGui and have issues with: compiling, linking, adding fonts, wiring inputs, running or displaying Dear ImGui: you can use [Discord server](http://discord.dearimgui.org).
 
- This library is poorly documented at the moment and expects of the user to be acquainted with C/C++.
- - Run the examples/ applications and explore them.
- - See demo code in imgui_demo.cpp and particularly the ImGui::ShowDemoWindow() function.
- - The demo covers most features of Dear ImGui, so you can read the code and see its output.
- - See documentation and comments at the top of imgui.cpp + effectively imgui.h.
- - Dozens of standalone example applications using e.g. OpenGL/DirectX are provided in the examples/ folder to explain how to integrate Dear ImGui with your own engine/application.
- - Your programming IDE is your friend, find the type or function declaration to find comments associated to it.
- - We obviously needs better documentation! Consider contributing or becoming a [Patron](http://www.patreon.com/imgui) to promote this effort.
+Otherwise, for any other questions, bug reports, requests, feedback, you may post on https://github.com/ocornut/imgui/issues. Please read and fill the New Issue template carefully.
+
+Paid private support is available for business customers (E-mail: _contact @ dearimgui dot org_).
 
 **Which version should I get?**
 
@@ -229,69 +164,26 @@ You may also peak at the [Multi-Viewport](https://github.com/ocornut/imgui/issue
 
 **Who uses Dear ImGui?**
 
-See the [Quotes](https://github.com/ocornut/imgui/wiki/Quotes) and [Software using dear imgui](https://github.com/ocornut/imgui/wiki/Software-using-dear-imgui) Wiki pages for a list of games/software which are publicly known to use dear imgui. Please add yours if you can!
-
-**Why the odd dual naming, "Dear ImGui" vs "ImGui"?**
-
-The library started its life as "ImGui" due to the fact that I didn't give it a proper name when I released 1.0 and had no particular expectation that it would take off. However, the term IMGUI (immediate-mode graphical user interface) was coined before and is being used in variety of other situations (e.g. Unity uses it own implementation of the IMGUI paradigm). To reduce this ambiguity without affecting existing codebases, I have decided on an alternate, longer name "Dear ImGui" that people can use to refer to this specific library. Please try to refer to this library as "Dear ImGui".
-
-**How can I tell whether to dispatch mouse/keyboard to Dear ImGui or to my application?**
-<br>**How can I display an image? What is ImTextureID, how does it works?** ([examples](https://github.com/ocornut/imgui/wiki/Image-Loading-and-Displaying-Examples))
-<br>**Why are multiple widgets reacting when I interact with a single one? How can I have multiple widgets with the same label or with an empty label? A primer on labels and the ID Stack...**
-<br>**How can I use my own math types instead of ImVec2/ImVec4?**
-<br>**How can I load a different font than the default?**
-<br>**How can I easily use icons in my application?**
-<br>**How can I load multiple fonts?**
-<br>**How can I display and input non-latin characters such as Chinese, Japanese, Korean, Cyrillic?** ([examples](https://github.com/ocornut/imgui/wiki/Loading-Font-Example))
-<br>**How can I interact with standard C++ types (such as std::string and std::vector)?**
-<br>**How can I use the drawing facilities without a Dear ImGui window? (using ImDrawList API)**
-<br>**How can I use this without a mouse, without a keyboard or without a screen? (gamepad, input share, remote display)**
-<br>**I integrated Dear ImGui in my engine and the text or lines are blurry..**
-<br>**I integrated Dear ImGui in my engine and some elements are disappearing when I move windows around..**
-<br>**How can I help?**
-
-See the FAQ in [imgui.cpp](https://github.com/ocornut/imgui/blob/master/imgui.cpp) for answers.
-
-**Can you create elaborate/serious tools with Dear ImGui?**
-
-Yes. People have written game editors, data browsers, debuggers, profilers and all sort of non-trivial tools with the library. In my experience the simplicity of the API is very empowering. Your UI runs close to your live data. Make the tools always-on and everybody in the team will be inclined to create new tools (as opposed to more "offline" UI toolkits where only a fraction of your team effectively creates tools). The list of sponsors below is also an indicator that serious game teams have been using the library.
-
-Dear ImGui is very programmer centric and the immediate-mode GUI paradigm might requires you to readjust some habits before you can realize its full potential. Dear ImGui is about making things that are simple, efficient and powerful.
-
-**Can you reskin the look of Dear ImGui?**
-
-You can alter the look of the interface to some degree: changing colors, sizes, padding, rounding, fonts. However, as Dear ImGui is designed and optimized to create debug tools, the amount of skinning you can apply is limited. There is only so much you can stray away from the default look and feel of the interface. Below is a screenshot from [LumixEngine](https://github.com/nem0/LumixEngine) with custom colors + a docking/tabs extension (both of which you can find in the Issues section and will eventually be merged):
-
-![LumixEngine](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v151/lumix-201710-rearranged.png)
-
-**Why using C++ (as opposed to C)?**
-
-Dear ImGui takes advantage of a few C++ languages features for convenience but nothing anywhere Boost-insanity/quagmire. Dear ImGui does NOT require C++11 so it can be used with most old C++ compilers. Dear ImGui doesn't use any C++ header file. Language-wise, function overloading and default parameters are used to make the API easier to use and code more terse. Doing so I believe the API is sitting on a sweet spot and giving up on those features would make the API more cumbersome. Other features such as namespace, constructors and templates (in the case of the ImVector<> class) are also relied on as a convenience.
-
-There is an auto-generated [c-api for Dear ImGui (cimgui)](https://github.com/cimgui/cimgui) by Sonoro1234 and Stephan Dilly. It is designed for creating binding to other languages. If possible, I would suggest using your target language functionalities to try replicating the function overloading and default parameters used in C++ else the API may be harder to use. Also see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for various third-party bindings.
+See the [Quotes](https://github.com/ocornut/imgui/wiki/Quotes) and [Software using dear imgui](https://github.com/ocornut/imgui/wiki/Software-using-dear-imgui) Wiki pages for a list of games/software which are publicly known to use dear imgui. Please add yours if you can! Also see the [Gallery Threads](https://github.com/ocornut/imgui/issues/2847)!
 
 How to help
 -----------
 
 **How can I help?**
 
-- You may participate in the [Discord server](https://discord.gg/NgJ4SEP), [Discourse forums](https://discourse.dearimgui.org), GitHub [issues tracker](https://github.com/ocornut/imgui/issues).
+- You may participate in the [Discord server](http://discord.dearimgui.org), [GitHub forum/issues](https://github.com/ocornut/imgui/issues).
 - You may help with development and submit pull requests! Please understand that by submitting a PR you are also submitting a request for the maintainer to review your code and then take over its maintenance forever. PR should be crafted both in the interest in the end-users and also to ease the maintainer into understanding and accepting it.
 - See [Help wanted](https://github.com/ocornut/imgui/wiki/Help-Wanted) on the [Wiki](https://github.com/ocornut/imgui/wiki/) for some more ideas.
 - Have your company financially support this project.
 
 **How can I help financing further development of Dear ImGui?**
 
-Your contributions are keeping this project alive. The library is available under a free and permissive licence, but continued maintenance and development are a full-time endeavor and I would like to grow the team. In addition to maintenance and stability there are many desirable features yet to be added. If your company is using dear imgui, please consider reaching out for invoiced technical support and maintenance contracts. If you are an individual using dear imgui, please consider supporting the project via Patreon or PayPal. Thank you!
+Your contributions are keeping this project alive. The library is available under a free and permissive license, but continued maintenance and development are a full-time endeavor and I would like to grow the team. In addition to maintenance and stability there are many desirable features yet to be added. If your company is using dear imgui, please consider reaching out for invoiced technical support and maintenance contracts. Thank you!
 
 Businesses: support continued development via invoiced technical support, maintenance, sponsoring contracts:
-<br>&nbsp;&nbsp;_E-mail: omarcornut at gmail dot com_
+<br>&nbsp;&nbsp;_E-mail: contact @ dearimgui dot org_
 
-Individuals/hobbyists: support continued maintenance and development via the monthly Patreon:
-<br>&nbsp;&nbsp;[![Patreon](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/patreon_02.png)](http://www.patreon.com/imgui)
-
-Individuals/hobbyists: support continued maintenance and development via PayPal:
-<br>&nbsp;&nbsp;[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=WGHNC6MBFLZ2S)
+Individuals: support continued maintenance and development via [PayPal](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=WGHNC6MBFLZ2S) donations.
 
 ### Sponsors
 
@@ -300,12 +192,14 @@ Ongoing Dear ImGui development is financially supported by users and private spo
 *Platinum-chocolate sponsors*
 - Blizzard Entertainment
 - Google
+- Ubisoft
+- Nvidia
 
 *Double-chocolate sponsors*
-- Media Molecule, Mobigame, Aras Pranckevičius, Greggman, DotEmu, Nadeo, Supercell, Runner, Aiden Koss, Kylotonn.
+- Media Molecule, Mobigame, Aras Pranckevičius, Greggman, DotEmu, Nadeo, Supercell, Aiden Koss, Kylotonn.
 
 *Salty caramel supporters*
-- Remedy Entertainment, Recognition Robotics, ikrima, Geoffrey Evans, Mercury Labs, Singularity Demo Group, Lionel Landwerlin, Ron Gilbert, Brandon Townsend, G3DVu, Cort Stratton, drudru, Harfang 3D, Jeff Roberts, Rainway inc, Ondra Voves, Mesh Consultants, Unit 2 Games, Neil Bickford, Bill Six, Graham Manders.
+- Remedy Entertainment, Next Level Games, Recognition Robotics, ikrima, Geoffrey Evans, Mercury Labs, Singularity Demo Group, Lionel Landwerlin, Ron Gilbert, Brandon Townsend, G3DVu, Cort Stratton, drudru, Harfang 3D, Jeff Roberts, Rainway inc, Ondra Voves, Mesh Consultants, Unit 2 Games, Neil Bickford, Bill Six, Graham Manders.
 
 *Caramel supporters*
 - Jerome Lanquetot, Daniel Collin, Ctrl Alt Ninja, Neil Henning, Neil Blakey-Milner, Aleksei, NeiloGD, Eric, Game Atelier, Vincent Hamm, Morten Skaaning, Colin Riley, Sergio Gonzales, Andrew Berridge, Roy Eltham, Game Preservation Society, Josh Faust, Martin Donlon, Codecat, Doug McNabb, Emmanuel Julien, Guillaume Chereau, Jeffrey Slutter, Jeremiah Deckard, r-lyeh, Nekith, Joshua Fisher, Malte Hoffmann, Mustafa Karaalioglu, Merlyn Morgan-Graham, Per Vognsen, Fabian Giesen, Jan Staubach, Matt Hargett, John Shearer, Jesse Chounard, kingcoopa, Jonas Bernemann, Johan Andersson, Michael Labbe, Tomasz Golebiowski, Louis Schnellbach, Jimmy Andrews, Bojan Endrovski, Robin Berg Pettersen, Rachel Crawford, Andrew Johnson, Sean Hunter, Jordan Mellow, Nefarius Software Solutions, Laura Wieme, Robert Nix, Mick Honey, Steven Kah Hien Wong, Bartosz Bielecki, Oscar Penas, A M, Liam Moynihan, Artometa, Mark Lee, Dimitri Diakopoulos, Pete Goodwin, Johnathan Roatch, nyu lea, Oswald Hurlem, Semyon Smelyanskiy, Le Bach, Jeong MyeongSoo, Chris Matthews, Astrofra, Frederik De Bleser, Anticrisis, Matt Reyer.
@@ -313,16 +207,20 @@ Ongoing Dear ImGui development is financially supported by users and private spo
 And all other past and present supporters; THANK YOU!
 (Please contact me if you would like to be added or removed from this list)
 
+Dear ImGui is using software and services kindly provided free of charge for open source projects:
+- [PVS-Studio](https://www.viva64.com/en/b/0570/) for static analysis.
+- [GitHub actions](https://github.com/features/actions) for continuous integration systems.
+
 Credits
 -------
 
-Developed by [Omar Cornut](http://www.miracleworld.net) and every direct or indirect contributors to the GitHub. The early version of this library was developed with the support of [Media Molecule](http://www.mediamolecule.com) and first used internally on the game [Tearaway](http://tearaway.mediamolecule.com).
+Developed by [Omar Cornut](http://www.miracleworld.net) and every direct or indirect contributors to the GitHub. The early version of this library was developed with the support of [Media Molecule](http://www.mediamolecule.com) and first used internally on the game [Tearaway](http://tearaway.mediamolecule.com) (Vita).
 
 I first discovered the IMGUI paradigm at [Q-Games](http://www.q-games.com) where Atman Binstock had dropped his own simple implementation in the codebase, which I spent quite some time improving and thinking about. It turned out that Atman was exposed to the concept directly by working with Casey. When I moved to Media Molecule I rewrote a new library trying to overcome the flaws and limitations of the first one I've worked with. It became this library and since then I have spent an unreasonable amount of time iterating and improving it.
 
 Embeds [ProggyClean.ttf](http://upperbounds.net) font by Tristan Grimmer (MIT license).
 
-Embeds [stb_textedit.h, stb_truetype.h, stb_rectpack.h](https://github.com/nothings/stb/) by Sean Barrett (public domain).
+Embeds [stb_textedit.h, stb_truetype.h, stb_rect_pack.h](https://github.com/nothings/stb/) by Sean Barrett (public domain).
 
 Inspiration, feedback, and testing for early versions: Casey Muratori, Atman Binstock, Mikko Mononen, Emmanuel Briney, Stefan Kamoda, Anton Mikhailov, Matt Willis. And everybody posting feedback, questions and patches on the GitHub.
 

docs/TODO.txt

@@ -8,6 +8,7 @@ It's mostly a bunch of personal notes, probably incomplete. Feel free to query i
  - doc/test: add a proper documentation+regression testing system (#435)
  - doc/test: checklist app to verify binding/integration of imgui (test inputs, rendering, callback, etc.).
  - doc/tips: tips of the day: website? applet in imgui_club?
+ - doc/wiki: work on the wiki https://github.com/ocornut/imgui/wiki
 
  - window: preserve/restore relative focus ordering (persistent or not) (#2304) -> also see docking reference to same #.
  - window: calling SetNextWindowSize() every frame with <= 0 doesn't do anything, may be useful to allow (particularly when used for a single axis). (#690)
@@ -27,6 +28,8 @@ It's mostly a bunch of personal notes, probably incomplete. Feel free to query i
  - window: GetWindowSize() returns (0,0) when not calculated? (#1045)
  - window: investigate better auto-positioning for new windows.
  - window: top most window flag? (#2574)
+ - window: the size_on_first_use path of Begin() can probably be removed
+ - window/size: manually triggered auto-fit (double-click on grip) shouldn't resize window down to viewport size?
  - window/opt: freeze window flag: if not focused/hovered, return false, render with previous ImDrawList. and/or reduce refresh rate. -> this may require enforcing that it is illegal to submit contents if Begin returns false.
  - window/child: the first draw command of a child window could be moved into the current draw command of the parent window (unless child+tooltip?).
  - window/child: border could be emitted in parent as well.
@@ -36,6 +39,7 @@ It's mostly a bunch of personal notes, probably incomplete. Feel free to query i
  ! scrolling: exposing horizontal scrolling with Shift+Wheel even when scrollbar is disabled expose lots of issues (#2424, #1463)
  - scrolling: while holding down a scrollbar, try to keep the same contents visible (at least while not moving mouse)
  - scrolling: allow immediately effective change of scroll after Begin() if we haven't appended items yet.
+ - scrolling: forward mouse wheel scrolling to parent window when at the edge of scrolling limits? (useful for listbox,tables?)
  - scrolling/clipping: separator on the initial position of a window is not visible (cursorpos.y <= clippos.y). (2017-08-20: can't repro)
  - scrolling/style: shadows on scrollable areas to denote that there is more contents
 
@@ -58,7 +62,6 @@ It's mostly a bunch of personal notes, probably incomplete. Feel free to query i
  - main: find a way to preserve relative orders of multiple reappearing windows (so an app toggling between "modes" e.g. fullscreen vs all tools) won't lose relative ordering.
  - main: IsItemHovered() make it more consistent for various type of widgets, widgets with multiple components, etc. also effectively IsHovered() region sometimes differs from hot region, e.g tree nodes
  - main: IsItemHovered() info stored in a stack? so that 'if TreeNode() { Text; TreePop; } if IsHovered' return the hover state of the TreeNode?
- - main: rename the main "Debug" window to avoid ID collision with user who may want to use "Debug" with specific flags.
 
  - widgets: display mode: widget-label, label-widget (aligned on column or using fixed size), label-newline-tab-widget etc. (#395)
  - widgets: clean up widgets internal toward exposing everything and stabilizing imgui_internals.h.
@@ -77,6 +80,7 @@ It's mostly a bunch of personal notes, probably incomplete. Feel free to query i
  - input text: clean up the mess caused by converting UTF-8 <> wchar. the code is rather inefficient right now and super fragile.
  - input text: reorganize event handling, allow CharFilter to modify buffers, allow multiple events? (#541)
  - input text: expose CursorPos in char filter event (#816)
+ - input text: try usage idiom of using InputText with data only exposed through get/set accessors, without extraneous copy/alloc. (#3009)
  - input text: access public fields via a non-callback API e.g. InputTextGetState("xxx") that may return NULL if not active.
  - input text: flag to disable live update of the user buffer (also applies to float/int text input) (#701)
  - input text: hover tooltip could show unclamped text
@@ -158,11 +162,12 @@ It's mostly a bunch of personal notes, probably incomplete. Feel free to query i
 
  - tabs: make EndTabBar fail if users doesn't respect BeginTabBar return value, for consistency/future-proofing.
  - tabs: persistent order/focus in BeginTabBar() api (#261, #351)
+ - tabs: TabItem could honor SetNextItemWidth()?
 
- - button: provide a button that looks framed. (?)
  - image/image button: misalignment on padded/bordered button?
  - image/image button: parameters are confusing, image() has tint_col,border_col whereas imagebutton() has bg_col/tint_col. Even thou they are different parameters ordering could be more consistent. can we fix that?
  - image button: not taking an explicit id can be problematic. (#2464, #1390)
+ - button: provide a button that looks framed. (?)
  - slider/drag: ctrl+click when format doesn't include a % character.. disable? display underlying value in default format? (see TempInputTextScalar)
  - slider: allow using the [-]/[+] buttons used by InputFloat()/InputInt()
  - slider: initial absolute click is imprecise. change to relative movement slider (same as scrollbar). (#1946)
@@ -199,10 +204,12 @@ It's mostly a bunch of personal notes, probably incomplete. Feel free to query i
  - popups: clicking outside (to close popup) and holding shouldn't drag window below.
  - popups: add variant using global identifier similar to Begin/End (#402)
  - popups: border options. richer api like BeginChild() perhaps? (#197)
+
  - tooltip: drag and drop with tooltip near monitor edges lose/changes its last direction instead of locking one. The drag and drop tooltip should always follow without changing direction.
  - tooltip: tooltip that doesn't fit in entire screen seems to lose their "last preferred direction" and may teleport when moving mouse.
  - tooltip: allow to set the width of a tooltip to allow TextWrapped() etc. while keeping the height automatic.
  - tooltip: tooltips with delay timers? or general timer policy? (instantaneous vs timed): IsItemHovered() with timer + implicit aabb-id for items with no ID. (#1485)
+ - tooltip: drag tooltip hovering over source widget with IsItemHovered/SetTooltip flickers.
 
  - menus: calling BeginMenu() twice with a same name doesn't append as Begin() does for regular windows (#1207)
  - menus: menu bars inside modal windows are acting weird.
@@ -214,26 +221,16 @@ It's mostly a bunch of personal notes, probably incomplete. Feel free to query i
  - menus: hovering from menu to menu on a menu-bar has 1 frame without any menu, which is a little annoying. ideally either 0 either longer.
  - menus: could merge draw call in most cases (how about storing an optional aabb in ImDrawCmd to move the burden of merging in a single spot).
 
- - text: selectable text (for copy) as a generic feature (ItemFlags?)
- - text: proper alignment options in imgui_internal.h
- - text: it's currently impossible to have a window title with "##". perhaps an official workaround would be nice. \ style inhibitor? non-visible ascii code to insert between #?
- - text: provided a framed text helper, e.g. https://pastebin.com/1Laxy8bT
- - text: refactor TextUnformatted (or underlying function) to more explicitly request if we need width measurement or not
- - text link/url button: underlined. should api expose an ID or use text contents as ID? which colors enum to use?
- - text/wrapped: should be a more first-class citizen, e.g. wrapped text within a Selectable with known width
- - text/wrapped: figure out better way to use TextWrapped() in an always auto-resize context (tooltip, etc.) (#249)
-
  - tree node: add treenode/treepush int variants? not there because (void*) cast from int warns on some platforms/settings?
  - tree node: try to apply scrolling at time of TreePop() if node was just opened and end of node is past scrolling limits?
  - tree node / selectable render mismatch which is visible if you use them both next to each other (e.g. cf. property viewer)
  - tree node: tweak color scheme to distinguish headers from selected tree node (#581)
  - tree node: leaf/non-leaf highlight mismatch.
- - tree node: _NoIndentOnOpen flag? would require to store a per-depth bit mask to store info for pop (or whatever is cheaper)
  - tree node/opt: could avoid formatting when clipped (flag assuming we don't care about width/height, assume single line height?)
 
  - settings: write more decent code to allow saving/loading new fields: columns, selected tree nodes?
  - settings: api for per-tool simple persistent data (bool,int,float,columns sizes,etc.) in .ini file (#437)
- - stb: add defines to disable stb implementations
+ - settings/persistence: helpers to make TreeNodeBehavior persist (even during dev!) - may need to store some semantic and/or data type in ImGuiStoragePair
 
  - style: better default styles. (#707)
  - style: add a highlighted text color (for headers, etc.)
@@ -258,24 +255,35 @@ It's mostly a bunch of personal notes, probably incomplete. Feel free to query i
  - filters: handle wild-cards (with implicit leading/trailing *), reg-exprs
  - filters: fuzzy matches (may use code at blog.forrestthewoods.com/4cffeed33fdb)
 
- - drag and drop: drag tooltip hovering over source widget with IsItemHovered/SetTooltip flickers.
  - drag and drop: fix/support/options for overlapping drag sources.
  - drag and drop: releasing a drop shows the "..." tooltip for one frame - since e13e598 (#1725)
  - drag and drop: drag source on a group object (would need e.g. an invisible button covering group in EndGroup) https://twitter.com/paniq/status/1121446364909535233
- - drag and drop: have some way to know when a drag begin from BeginDragDropSource() pov.
+ - drag and drop: have some way to know when a drag begin from BeginDragDropSource() pov. (see 2018/01/11 post in #143)
  - drag and drop: allow preview tooltip to be submitted from a different place than the drag source. (#1725)
  - drag and drop: allow using with other mouse buttons (where activeid won't be set). (#1637)
  - drag and drop: make it easier and provide a demo to have tooltip both are source and target site, with a more detailed one on target site (tooltip ordering problem)
  - drag and drop: demo with reordering nodes (in a list, or a tree node). (#143)
  - drag and drop: test integrating with os drag and drop (make it easy to do a naive WM_DROPFILE integration)
  - drag and drop: allow for multiple payload types. (#143)
- - drag and drop: make payload optional? (#143)
+ - drag and drop: make payload optional? payload promise? (see 2018/01/11 post in #143)
  - drag and drop: (#143) "both an in-process pointer and a promise to generate a serialized version, for whether the drag ends inside or outside the same process"
  - drag and drop: feedback when hovering a region blocked by modal (mouse cursor "NO"?)
- - node/graph editor (#306)
+
+ - node/graph editors (#306) (also see https://github.com/ocornut/imgui/wiki#node-editors)
  - pie menus patterns (#434)
  - markup: simple markup language for color change? (#902)
 
+ - text: selectable text (for copy) as a generic feature (ItemFlags?)
+ - text: proper alignment options in imgui_internal.h
+ - text: it's currently impossible to have a window title with "##". perhaps an official workaround would be nice. \ style inhibitor? non-visible ascii code to insert between #?
+ - text: provided a framed text helper, e.g. https://pastebin.com/1Laxy8bT
+ - text: refactor TextUnformatted (or underlying function) to more explicitly request if we need width measurement or not
+ - text link/url button: underlined. should api expose an ID or use text contents as ID? which colors enum to use?
+ - text/wrapped: should be a more first-class citizen, e.g. wrapped text within a Selectable with known width.
+ - text/wrapped: custom separator for text wrapping. (#3002)
+ - text/wrapped: figure out better way to use TextWrapped() in an always auto-resize context (tooltip, etc.) (#249)
+
+ - font: arbitrary line spacing. (#2945)
  - font: MergeMode: flags to select overwriting or not (this is now very easy with refactored ImFontAtlasBuildWithStbTruetype)
  - font: free the Alpha buffer if user only requested RGBA.
 !- font: better CalcTextSizeA() API, at least for simple use cases. current one is horrible (perhaps have simple vs extended versions).
@@ -300,12 +308,14 @@ It's mostly a bunch of personal notes, probably incomplete. Feel free to query i
  - font: add support for kerning, probably optional. A) perhaps default to (32..128)^2 matrix ~ 9K entries = 36KB, then hash for non-ascii?. B) or sparse lookup into per-char list?
  - font: add a simpler CalcTextSizeA() api? current one ok but not welcome if user needs to call it directly (without going through ImGui::CalcTextSize)
  - font: fix AddRemapChar() to work before atlas  has been built.
- - font: what would it take to support codepoint higher than 0xFFFF? (smileys, etc.) (#2538, #2541)
+ - font: support for unicode codepoints higher than 0xFFFF? (pr #2815)
  - font: (api breaking) remove "TTF" from symbol names. also because it now supports OTF.
  - font/opt: Considering storing standalone AdvanceX table as 16-bit fixed point integer?
  - font/opt: Glyph currently 40 bytes (2+9*4). Consider storing UV as 16 bits integer? (->32 bytes). X0/Y0/X1/Y1 as 16 fixed-point integers? Or X0/Y0 as float and X1/Y1 as fixed8_8?
 
  - nav: some features such as PageUp/Down/Home/End should probably work without ImGuiConfigFlags_NavEnableKeyboard? (where do we draw the line?)
+ ! nav: never clear NavId on some setup (e.g. gamepad centric)
+ - nav: code to focus child-window on restoring NavId appears to have issue: e.g. when focus change is implicit because of window closure.
  - nav: configuration flag to disable global shortcuts (currently only CTRL-Tab) ?
  - nav: Home/End behavior when navigable item is not fully visible at the edge of scrolling? should be backtrack to keep item into view?
  - nav: NavScrollToBringItemIntoView() with item bigger than view should focus top-right? Repro: using Nav in "About Window"
@@ -313,20 +323,21 @@ It's mostly a bunch of personal notes, probably incomplete. Feel free to query i
  - nav: patterns to make it possible for arrows key to update selection
  - nav: restore/find nearest NavId when current one disappear (e.g. pressed a button that disappear, or perhaps auto restoring when current button change name)
  - nav: SetItemDefaultFocus() level of priority, so widget like Selectable when inside a popup could claim a low-priority default focus on the first selected iem
- - nav: ESC within a menu of a child window seems to exit the child window.
  - nav: NavFlattened: ESC on a flattened child should select something.
  - nav: NavFlattened: broken: in typical usage scenario, the items of a fully clipped child are currently not considered to enter into a NavFlattened child.
  - nav: NavFlattened: init request doesn't select items that are part of a NavFlattened child
  - nav: NavFlattened: cannot access menu-bar of a flattened child window with Alt/menu key (not a very common use case..).
- - nav: Left within a tree node block as a fallback (ImGuiTreeNodeFlags_NavLeftJumpsBackHere by default?)
+ - nav/treenode: Left within a tree node block as a fallback (ImGuiTreeNodeFlags_NavLeftJumpsBackHere by default?)
  - nav/menus: pressing left-right on a vertically clipped menu bar tends to jump to the collapse/close buttons.
  - nav/menus: allow pressing Menu to leave a sub-menu.
- - nav/menus: a way to access the main menu bar with Alt? (currently needs CTRL+TAB)
+ - nav/menus: a way to access the main menu bar with Alt? (currently needs CTRL+TAB) or last focused window menu bar?
  - nav/menus: when using the main menu bar, even though we restore focus after, the underlying window loses its title bar highlight during menu manipulation. could we prevent it?
  - nav/menus: main menu bar currently cannot restore a NULL focus. Could save NavWindow at the time of being focused, similarly to what popup do?
+ - nav/menus: Alt,Up could open the first menu (e.g. "File") currently it tends to nav into the window/collapse menu. Do do that we would need custom transition?
+ - nav/windowing: configure fade-in/fade-out delay on Ctrl+Tab?
+ - nav/windowing: when CTRL-Tab/windowing is active, the HoveredWindow detection doesn't take account of the window display re-ordering.
  - nav: simulate right-click or context activation? (SHIFT+F10)
  - nav: tabs should go through most/all widgets (in submission order?).
- - nav: when CTRL-Tab/windowing is active, the HoveredWindow detection doesn't take account of the window display re-ordering.
  - nav: esc/enter default behavior for popups, e.g. be able to mark an "ok" or "cancel" button that would get triggered by those keys.
  - nav: when activating a button that changes label (without a static ID) or disappear, can we somehow automatically recover into a nearest highlight item?
  - nav: there's currently no way to completely clear focus with the keyboard. depending on patterns used by the application to dispatch inputs, it may be desirable.
@@ -339,12 +350,12 @@ It's mostly a bunch of personal notes, probably incomplete. Feel free to query i
  - inputs: support track pad style scrolling & slider edit.
  - inputs/io: backspace and arrows in the context of a text input could use system repeat rate.
  - inputs/io: clarify/standardize/expose repeat rate and repeat delays (#1808)
- - inputs: add mouse cursor for unavailable/no? IDC_NO/SDL_SYSTEM_CURSOR_NO.
  - inputs/scrolling: support for smooth scrolling (#2462, #2569)
 
  - misc: idle: expose "woken up" boolean (set by inputs) and/or animation time (for cursor blink) for back-end to be able stop refreshing easily.
  - misc: idle: if cursor blink if the _only_ visible animation, core imgui could rewrite vertex alpha to avoid CPU pass on ImGui:: calls.
  - misc: idle: if cursor blink if the _only_ visible animation, could even expose a dirty rectangle that optionally can be leverage by some app to render in a smaller viewport, getting rid of much pixel shading cost.
+ - misc: no way to run a root-most GetID() with ImGui:: api since there's always a Debug window in the stack. (mentioned in #2960)
  - misc: make the ImGuiCond values linear (non-power-of-two). internal storage for ImGuiWindow can use integers to combine into flags (Why?)
  - misc: provide a way to compile out the entire implementation while providing a dummy API (e.g. #define IMGUI_DUMMY_IMPL)
  - misc: PushItemFlag(): add a flag to disable keyboard capture when used with mouse? (#1682)
@@ -352,9 +363,6 @@ It's mostly a bunch of personal notes, probably incomplete. Feel free to query i
  - misc: possible compile-time support for string view/range instead of char* would e.g. facilitate usage with Rust (#683)
  - misc: possible compile-time support for wchar_t instead of char*?
 
- - backend: bgfx? https://gist.github.com/RichardGale/6e2b74bc42b3005e08397236e4be0fd0
- - emscriptem: with refactored examples, we could provide a direct imgui_impl_emscripten platform layer (see eg. https://github.com/floooh/sokol-samples/blob/master/html5/imgui-emsc.cc#L42)
-
  - remote: make a system like RemoteImGui first-class citizen/project (#75)
 
  - demo: find a way to demonstrate textures in the examples application, as it such a common issue for new users.
@@ -362,14 +370,20 @@ It's mostly a bunch of personal notes, probably incomplete. Feel free to query i
  - demo: add vertical separator demo
  - demo: add virtual scrolling example?
  - demo: demonstrate Plot offset
+ - demo: window size constraint: square demo is broken when resizing from edges (#1975), would need to rework the callback system to solve this
+
  - examples: window minimize, maximize (#583)
  - examples: provide a zero frame-rate/idle example.
- - examples: apple: example_apple should be using modern GL3.
- - examples: glfw: could go idle when minimized? if (glfwGetWindowAttrib(window, GLFW_ICONIFIED)) { glfwWaitEvents(); continue; } // issue: DeltaTime will be super high on resume, perhaps provide a way to let impl know (#440)
- - examples: opengl: rename imgui_impl_opengl2 to impl_opengl_legacy and imgui_impl_opengl3 to imgui_impl_opengl? (#1900)
- - examples: opengl: could use a single vertex buffer and glBufferSubData for uploads?
- - examples: opengl: explicitly disable GL_STENCIL_TEST in bindings.
- - examples: vulkan: viewport: support for synchronized swapping of multiple swap chains.
+ - backends: apple: example_apple should be using modern GL3.
+ - backends: glfw: could go idle when minimized? if (glfwGetWindowAttrib(window, GLFW_ICONIFIED)) { glfwWaitEvents(); continue; } // issue: DeltaTime will be super high on resume, perhaps provide a way to let impl know (#440)
+ - backends: opengl: rename imgui_impl_opengl2 to impl_opengl_legacy and imgui_impl_opengl3 to imgui_impl_opengl? (#1900)
+ - backends: opengl: could use a single vertex buffer and glBufferSubData for uploads?
+ - backends: opengl: explicitly disable GL_STENCIL_TEST in bindings.
+ - backends: opengl: consider gl_lite loader https://github.com/ApoorvaJ/Papaya/blob/3808e39b0f45d4ca4972621c847586e4060c042a/src/libs/gl_lite.h
+ - backends: vulkan: viewport: support for synchronized swapping of multiple swap chains.
+ - backends: bgfx: https://gist.github.com/RichardGale/6e2b74bc42b3005e08397236e4be0fd0
+ - backends: mscriptem: with refactored examples, we could provide a direct imgui_impl_emscripten platform layer (see eg. https://github.com/floooh/sokol-samples/blob/master/html5/imgui-emsc.cc#L42)
+
  - optimization: replace vsnprintf with stb_printf? or enable the defines/infrastructure to allow it (#1038)
  - optimization: add clipping for multi-component widgets (SliderFloatX, ColorEditX, etc.). one problem is that nav branch can't easily clip parent group when there is a move request.
  - optimization: add a flag to disable most of rendering, for the case where the user expect to skip it (#335)

examples/.gitignore

@@ -40,3 +40,7 @@ example_sdl_opengl3/example_sdl_opengl3
 
 ## Dear ImGui Ini files
 imgui.ini
+
+## JetBrains IDEs
+.idea
+cmake-build-*

examples/README.txt

@@ -1,5 +1,5 @@
 -----------------------------------------------------------------------
- dear imgui, v1.73
+ dear imgui, v1.75
 -----------------------------------------------------------------------
  examples/README.txt
  (This is the README file for the examples/ folder. See docs/ for more documentation)
@@ -35,6 +35,8 @@ You can find binaries of some of those example applications at:
  MISC COMMENTS AND SUGGESTIONS
 ---------------------------------------
 
+ - Read FAQ at http://dearimgui.org/faq
+
  - Please read 'PROGRAMMER GUIDE' in imgui.cpp for notes on how to setup Dear ImGui in your codebase.
    Please read the comments and instruction at the top of each file.
 
@@ -62,10 +64,10 @@ You can find binaries of some of those example applications at:
 Most the example bindings are split in 2 parts:
 
  - The "Platform" bindings, in charge of: mouse/keyboard/gamepad inputs, cursor shape, timing, windowing.
-   Examples: Windows (imgui_impl_win32.cpp), GLFW (imgui_impl_glfw.cpp), SDL2 (imgui_impl_sdl.cpp)
+   Examples: Windows (imgui_impl_win32.cpp), GLFW (imgui_impl_glfw.cpp), SDL2 (imgui_impl_sdl.cpp), etc.
 
  - The "Renderer" bindings, in charge of: creating the main font texture, rendering imgui draw data.
-   Examples: DirectX11 (imgui_impl_dx11.cpp), GL3 (imgui_impl_opengl3.cpp), Vulkan (imgui_impl_vulkan.cpp)
+   Examples: DirectX11 (imgui_impl_dx11.cpp), GL3 (imgui_impl_opengl3.cpp), Vulkan (imgui_impl_vulkan.cpp), etc.
 
  - The example _applications_ usually combine 1 platform + 1 renderer binding to create a working program.
    Examples: the example_win32_directx11/ application combines imgui_impl_win32.cpp + imgui_impl_dx11.cpp.
@@ -104,7 +106,7 @@ List of Platforms Bindings in this repository:
     imgui_impl_osx.mm         ; macOS native API (not as feature complete as glfw/sdl back-ends)
     imgui_impl_sdl.cpp        ; SDL2 (Windows, macOS, Linux, iOS, Android) https://www.libsdl.org
     imgui_impl_win32.cpp      ; Win32 native API (Windows)
-    imgui_impl_glut.cpp       ; GLUT/FreeGLUT (absolutely not recommended in 2019)
+    imgui_impl_glut.cpp       ; GLUT/FreeGLUT (absolutely not recommended in 2020!)
 
 List of Renderer Bindings in this repository:
 
@@ -122,16 +124,28 @@ List of high-level Frameworks Bindings in this repository: (combine Platform + R
     imgui_impl_allegro5.cpp
     imgui_impl_marmalade.cpp
 
-Note that Dear ImGui works with Emscripten.
-The examples_emscripten/ app uses sdl.cpp + opengl3.cpp but other combinations are possible.
+Note that Dear ImGui works with Emscripten. The examples_emscripten/ app uses imgui_impl_sdl.cpp and
+imgui_impl_opengl3.cpp, but other combinations are possible.
+
 Third-party framework, graphics API and languages bindings are listed at:
 
     https://github.com/ocornut/imgui/wiki/Bindings
 
-    Languages: C, C#, ChaiScript, D, Go, Haxe, Java, Lua, Odin, Pascal, PureBasic, Python, Rust, Swift...
-    Frameworks: Cinder, Cocoa (OSX), Cocos2d-x, SFML, GML/GameMaker Studio, Irrlicht, Ogre, OpenSceneGraph,
-    openFrameworks, LOVE, NanoRT, Nim Game Lib, Qt3d, SFML, Unreal Engine 4...
-    Miscellaneous: Software Renderer, RemoteImgui, etc.
+Including backends for:
+
+    AGS/Adventure Game Studio, Amethyst, bsf, Cinder, Cocos2d-x, Diligent Engine, Flexium,
+    GML/Game Maker Studio2, GTK3+OpenGL3, Irrlicht Engine, LÖVE+LUA, Magnum, NanoRT, Nim Game Lib,
+    Ogre, openFrameworks, OSG/OpenSceneGraph, Orx, px_render, Qt/QtDirect3D, SFML, Sokol,
+    Unreal Engine 4, vtk, Win32 GDI, etc.
+
+Not sure which to use?
+Recommended platform/frameworks:
+
+    GLFW    https://github.com/glfw/glfw        Use imgui_impl_glfw.cpp
+    SDL2    https://www.libsdl.org              Use imgui_impl_sdl.cpp
+    Sokol   https://github.com/floooh/sokol     Use util/sokol_imgui.h in Sokol repository.
+
+Those will allow you to create portable applications and will solve and abstract away many issues.
 
 
 ---------------------------------------
@@ -182,7 +196,7 @@ example_glfw_opengl2/
     GLFW + OpenGL2 example (legacy, fixed pipeline).
     = main.cpp + imgui_impl_glfw.cpp + imgui_impl_opengl2.cpp
     **DO NOT USE OPENGL2 CODE IF YOUR CODE/ENGINE IS USING MODERN OPENGL (SHADERS, VBO, VAO, etc.)**
-    **Prefer using OPENGL3 code (with gl3w/glew/glad, you can replace the OpenGL function loader)**
+    **Prefer using OPENGL3 code (with gl3w/glew/glad/glbindings, you can replace the OpenGL function loader)**
     This code is mostly provided as a reference to learn about Dear ImGui integration, because it is shorter.
     If your code is using GL3+ context or any semi modern OpenGL calls, using this renderer is likely to
     make things more complicated, will require your code to reset many OpenGL attributes to their initial
@@ -227,7 +241,7 @@ example_sdl_opengl2/
     SDL2 (Win32, Mac, Linux etc.) + OpenGL example (legacy, fixed pipeline).
     = main.cpp + imgui_impl_sdl.cpp + imgui_impl_opengl2.cpp
     **DO NOT USE OPENGL2 CODE IF YOUR CODE/ENGINE IS USING MODERN OPENGL (SHADERS, VBO, VAO, etc.)**
-    **Prefer using OPENGL3 code (with gl3w/glew/glad, you can replace the OpenGL function loader)**
+    **Prefer using OPENGL3 code (with gl3w/glew/glad/glbindings, you can replace the OpenGL function loader)**
     This code is mostly provided as a reference to learn about Dear ImGui integration, because it is shorter.
     If your code is using GL3+ context or any semi modern OpenGL calls, using this renderer is likely to
     make things more complicated, will require your code to reset many OpenGL attributes to their initial

examples/example_allegro5/README.md

@@ -9,12 +9,14 @@ Note that the back-end supports _BOTH_ 16-bit and 32-bit indices, but 32-bit ind
 
 # How to Build
 
-### On Ubuntu 14.04+
+### On Ubuntu 14.04+ and macOS
 
 ```bash
-g++ -DIMGUI_USER_CONFIG=\"examples/example_allegro5/imconfig_allegro5.h\" -I .. -I ../.. main.cpp ../imgui_impl_allegro5.cpp ../../imgui*.cpp -lallegro -lallegro_primitives -o allegro5_example
+g++ -DIMGUI_USER_CONFIG=\"examples/example_allegro5/imconfig_allegro5.h\" -I .. -I ../.. main.cpp ../imgui_impl_allegro5.cpp ../../imgui*.cpp -lallegro -lallegro_main -lallegro_primitives -o allegro5_example
 ```
 
+On macOS, install Allegro with homebrew: `brew install allegro`.
+
 ### On Windows with Visual Studio's CLI
 
 You may install Allegro using vcpkg:

examples/example_allegro5/main.cpp

@@ -40,7 +40,7 @@ int main(int, char**)
     // - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple.
     // - If the file cannot be loaded, the function will return NULL. Please handle those errors in your application (e.g. use an assertion, or display an error and quit).
     // - The fonts will be rasterized at a given size (w/ oversampling) and stored into a texture when calling ImFontAtlas::Build()/GetTexDataAsXXXX(), which ImGui_ImplXXXX_NewFrame below will call.
-    // - Read 'misc/fonts/README.txt' for more instructions and details.
+    // - Read 'docs/FONTS.txt' for more instructions and details.
     // - Remember that in C/C++ if you want to include a backslash \ in a string literal you need to write a double backslash \\ !
     //io.Fonts->AddFontDefault();
     //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Roboto-Medium.ttf", 16.0f);

examples/example_apple_opengl2/main.mm

@@ -253,7 +253,7 @@
     // - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple.
     // - If the file cannot be loaded, the function will return NULL. Please handle those errors in your application (e.g. use an assertion, or display an error and quit).
     // - The fonts will be rasterized at a given size (w/ oversampling) and stored into a texture when calling ImFontAtlas::Build()/GetTexDataAsXXXX(), which ImGui_ImplXXXX_NewFrame below will call.
-    // - Read 'misc/fonts/README.txt' for more instructions and details.
+    // - Read 'docs/FONTS.txt' for more instructions and details.
     // - Remember that in C/C++ if you want to include a backslash \ in a string literal you need to write a double backslash \\ !
     //io.Fonts->AddFontDefault();
     //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Roboto-Medium.ttf", 16.0f);

examples/example_emscripten/Makefile

@@ -1,8 +1,10 @@
 #
 # Makefile to use with emscripten
 # See https://emscripten.org/docs/getting_started/downloads.html
-# for installation instructions. This Makefile assumes you have
-# loaded emscripten's environment.
+# for installation instructions.
+#
+# This Makefile assumes you have loaded emscripten's environment.
+# (On Windows, you may need to execute emsdk_env.bat or encmdprompt.bat ahead)
 #
 # Running `make` will produce three files:
 #  - example_emscripten.html
@@ -13,7 +15,6 @@
 
 CC = emcc
 CXX = em++
-
 EXE = example_emscripten.html
 SOURCES = main.cpp
 SOURCES += ../imgui_impl_sdl.cpp ../imgui_impl_opengl3.cpp
@@ -21,18 +22,41 @@ SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 UNAME_S := $(shell uname -s)
 
-EMS = -s USE_SDL=2 -s WASM=1
-EMS += -s ALLOW_MEMORY_GROWTH=1 -s BINARYEN_TRAP_MODE=clamp
+##---------------------------------------------------------------------
+## EMSCRIPTEN OPTIONS
+##---------------------------------------------------------------------
+
+EMS += -s USE_SDL=2 -s WASM=1
+EMS += -s ALLOW_MEMORY_GROWTH=1
 EMS += -s DISABLE_EXCEPTION_CATCHING=1 -s NO_EXIT_RUNTIME=0
-EMS += -s ASSERTIONS=1 -s NO_FILESYSTEM=1
+EMS += -s ASSERTIONS=1
+
+# Uncomment next line to fix possible rendering bugs with Emscripten version older then 1.39.0 (https://github.com/ocornut/imgui/issues/2877)
+#EMS += -s BINARYEN_TRAP_MODE=clamp
 #EMS += -s SAFE_HEAP=1    ## Adds overhead
 
-CPPFLAGS = -I../ -I../../
+# Emscripten allows preloading a file or folder to be accessible at runtime.
+# The Makefile for this example project suggests embedding the misc/fonts/ folder into our application, it will then be accessible as "/fonts"
+# See documentation for more details: https://emscripten.org/docs/porting/files/packaging_files.html
+# (Default value is 0. Set to 1 to enable file-system and include the misc/fonts/ folder as part of the build.)
+USE_FILE_SYSTEM ?= 0
+ifeq ($(USE_FILE_SYSTEM), 0)
+EMS += -s NO_FILESYSTEM=1 -DIMGUI_DISABLE_FILE_FUNCTIONS
+endif
+ifeq ($(USE_FILE_SYSTEM), 1)
+LDFLAGS += --no-heap-copy --preload-file ../../misc/fonts@/fonts
+endif
+
+##---------------------------------------------------------------------
+## FINAL BUILD FLAGS
+##---------------------------------------------------------------------
+
+CPPFLAGS += -I../ -I../../
 #CPPFLAGS += -g
 CPPFLAGS += -Wall -Wformat -Os
 CPPFLAGS += $(EMS)
-LIBS = $(EMS)
-LDFLAGS = --shell-file shell_minimal.html
+LIBS += $(EMS)
+LDFLAGS += --shell-file shell_minimal.html
 
 ##---------------------------------------------------------------------
 ## BUILD RULES

examples/example_emscripten/README.md

@@ -3,6 +3,10 @@
 
 - You need to install Emscripten from https://emscripten.org/docs/getting_started/downloads.html, and have the environment variables set, as described in https://emscripten.org/docs/getting_started/downloads.html#installation-instructions
 
-```
-em++ -I.. -I../.. main.cpp ../imgui_impl_sdl.cpp ../imgui_impl_opengl3.cpp ../../imgui*.cpp -s USE_SDL=2 -s USE_WEBGL2=1 -s WASM=1 -s FULL_ES3=1 -s ALLOW_MEMORY_GROWTH=1 -s BINARYEN_TRAP_MODE=clamp --shell-file shell_minimal.html -o example-emscripten.html
-```
+- Depending on your configuration, in Windows you may need to run `emsdk/emsdk_env.bat` in your console to access the Emscripten command-line tools.
+
+- Then build using `make` while in the `example_emscripten/` directory.
+
+- Note that Emscripten 1.39.0 (October 2019) obsoleted the `BINARYEN_TRAP_MODE=clamp` compilation flag which was required with version older than 1.39.0 to avoid rendering artefacts. See [#2877](https://github.com/ocornut/imgui/issues/2877) for details. If you use an older version, uncomment this line in the Makefile:
+
+`#EMS += -s BINARYEN_TRAP_MODE=clamp`

examples/example_emscripten/main.cpp

@@ -81,15 +81,18 @@ int main(int, char**)
     // - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple.
     // - If the file cannot be loaded, the function will return NULL. Please handle those errors in your application (e.g. use an assertion, or display an error and quit).
     // - The fonts will be rasterized at a given size (w/ oversampling) and stored into a texture when calling ImFontAtlas::Build()/GetTexDataAsXXXX(), which ImGui_ImplXXXX_NewFrame below will call.
-    // - Read 'misc/fonts/README.txt' for more instructions and details.
+    // - Read 'docs/FONTS.txt' for more instructions and details.
     // - Remember that in C/C++ if you want to include a backslash \ in a string literal you need to write a double backslash \\ !
+    // - Emscripten allows preloading a file or folder to be accessible at runtime. See Makefile for details.
     //io.Fonts->AddFontDefault();
-    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Roboto-Medium.ttf", 16.0f);
-    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Cousine-Regular.ttf", 15.0f);
-    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/DroidSans.ttf", 16.0f);
-    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/ProggyTiny.ttf", 10.0f);
-    //ImFont* font = io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf", 18.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
+#ifndef IMGUI_DISABLE_FILE_FUNCTIONS
+    io.Fonts->AddFontFromFileTTF("fonts/Roboto-Medium.ttf", 16.0f);
+    //io.Fonts->AddFontFromFileTTF("fonts/Cousine-Regular.ttf", 15.0f);
+    //io.Fonts->AddFontFromFileTTF("fonts/DroidSans.ttf", 16.0f);
+    //io.Fonts->AddFontFromFileTTF("fonts/ProggyTiny.ttf", 10.0f);
+    //ImFont* font = io.Fonts->AddFontFromFileTTF("fonts/ArialUni.ttf", 18.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
     //IM_ASSERT(font != NULL);
+#endif
 
     // This function call won't return, and will engage in an infinite loop, processing events from the browser, and dispatching them.
     emscripten_set_main_loop_arg(main_loop, NULL, 0, true);

examples/example_glfw_metal/main.mm

@@ -38,7 +38,7 @@ int main(int, char**)
     // - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple.
     // - If the file cannot be loaded, the function will return NULL. Please handle those errors in your application (e.g. use an assertion, or display an error and quit).
     // - The fonts will be rasterized at a given size (w/ oversampling) and stored into a texture when calling ImFontAtlas::Build()/GetTexDataAsXXXX(), which ImGui_ImplXXXX_NewFrame below will call.
-    // - Read 'misc/fonts/README.txt' for more instructions and details.
+    // - Read 'docs/FONTS.txt' for more instructions and details.
     // - Remember that in C/C++ if you want to include a backslash \ in a string literal you need to write a double backslash \\ !
     //io.Fonts->AddFontDefault();
     //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Roboto-Medium.ttf", 16.0f);
@@ -82,77 +82,80 @@ int main(int, char**)
     // Main loop
     while (!glfwWindowShouldClose(window))
     {
-        // Poll and handle events (inputs, window resize, etc.)
-        // You can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if dear imgui wants to use your inputs.
-        // - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application.
-        // - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application.
-        // Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags.
-        glfwPollEvents();
-
-        int width, height;
-        glfwGetFramebufferSize(window, &width, &height);
-        layer.drawableSize = CGSizeMake(width, height);
-        id<CAMetalDrawable> drawable = [layer nextDrawable];
-
-        id<MTLCommandBuffer> commandBuffer = [commandQueue commandBuffer];
-        renderPassDescriptor.colorAttachments[0].clearColor = MTLClearColorMake(clear_color[0], clear_color[1], clear_color[2], clear_color[3]);
-        renderPassDescriptor.colorAttachments[0].texture = drawable.texture;
-        renderPassDescriptor.colorAttachments[0].loadAction = MTLLoadActionClear;
-        renderPassDescriptor.colorAttachments[0].storeAction = MTLStoreActionStore;
-        id <MTLRenderCommandEncoder> renderEncoder = [commandBuffer renderCommandEncoderWithDescriptor:renderPassDescriptor];
-        [renderEncoder pushDebugGroup:@"ImGui demo"];
-
-        // Start the Dear ImGui frame
-        ImGui_ImplMetal_NewFrame(renderPassDescriptor);
-        ImGui_ImplGlfw_NewFrame();
-        ImGui::NewFrame();
-
-        // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
-        if (show_demo_window)
-            ImGui::ShowDemoWindow(&show_demo_window);
-
-        // 2. Show a simple window that we create ourselves. We use a Begin/End pair to created a named window.
+        @autoreleasepool
         {
-            static float f = 0.0f;
-            static int counter = 0;
+            // Poll and handle events (inputs, window resize, etc.)
+            // You can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if dear imgui wants to use your inputs.
+            // - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application.
+            // - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application.
+            // Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags.
+            glfwPollEvents();
 
-            ImGui::Begin("Hello, world!");                          // Create a window called "Hello, world!" and append into it.
+            int width, height;
+            glfwGetFramebufferSize(window, &width, &height);
+            layer.drawableSize = CGSizeMake(width, height);
+            id<CAMetalDrawable> drawable = [layer nextDrawable];
 
-            ImGui::Text("This is some useful text.");               // Display some text (you can use a format strings too)
-            ImGui::Checkbox("Demo Window", &show_demo_window);      // Edit bools storing our window open/close state
-            ImGui::Checkbox("Another Window", &show_another_window);
+            id<MTLCommandBuffer> commandBuffer = [commandQueue commandBuffer];
+            renderPassDescriptor.colorAttachments[0].clearColor = MTLClearColorMake(clear_color[0], clear_color[1], clear_color[2], clear_color[3]);
+            renderPassDescriptor.colorAttachments[0].texture = drawable.texture;
+            renderPassDescriptor.colorAttachments[0].loadAction = MTLLoadActionClear;
+            renderPassDescriptor.colorAttachments[0].storeAction = MTLStoreActionStore;
+            id <MTLRenderCommandEncoder> renderEncoder = [commandBuffer renderCommandEncoderWithDescriptor:renderPassDescriptor];
+            [renderEncoder pushDebugGroup:@"ImGui demo"];
 
-            ImGui::SliderFloat("float", &f, 0.0f, 1.0f);            // Edit 1 float using a slider from 0.0f to 1.0f
-            ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
+            // Start the Dear ImGui frame
+            ImGui_ImplMetal_NewFrame(renderPassDescriptor);
+            ImGui_ImplGlfw_NewFrame();
+            ImGui::NewFrame();
 
-            if (ImGui::Button("Button"))                            // Buttons return true when clicked (most widgets return true when edited/activated)
-                counter++;
-            ImGui::SameLine();
-            ImGui::Text("counter = %d", counter);
+            // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
+            if (show_demo_window)
+                ImGui::ShowDemoWindow(&show_demo_window);
 
-            ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
-            ImGui::End();
+            // 2. Show a simple window that we create ourselves. We use a Begin/End pair to created a named window.
+            {
+                static float f = 0.0f;
+                static int counter = 0;
+
+                ImGui::Begin("Hello, world!");                          // Create a window called "Hello, world!" and append into it.
+
+                ImGui::Text("This is some useful text.");               // Display some text (you can use a format strings too)
+                ImGui::Checkbox("Demo Window", &show_demo_window);      // Edit bools storing our window open/close state
+                ImGui::Checkbox("Another Window", &show_another_window);
+
+                ImGui::SliderFloat("float", &f, 0.0f, 1.0f);            // Edit 1 float using a slider from 0.0f to 1.0f
+                ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
+
+                if (ImGui::Button("Button"))                            // Buttons return true when clicked (most widgets return true when edited/activated)
+                    counter++;
+                ImGui::SameLine();
+                ImGui::Text("counter = %d", counter);
+
+                ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
+                ImGui::End();
+            }
+
+            // 3. Show another simple window.
+            if (show_another_window)
+            {
+                ImGui::Begin("Another Window", &show_another_window);   // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
+                ImGui::Text("Hello from another window!");
+                if (ImGui::Button("Close Me"))
+                    show_another_window = false;
+                ImGui::End();
+            }
+
+            // Rendering
+            ImGui::Render();
+            ImGui_ImplMetal_RenderDrawData(ImGui::GetDrawData(), commandBuffer, renderEncoder);
+
+            [renderEncoder popDebugGroup];
+            [renderEncoder endEncoding];
+
+            [commandBuffer presentDrawable:drawable];
+            [commandBuffer commit];
         }
-
-        // 3. Show another simple window.
-        if (show_another_window)
-        {
-            ImGui::Begin("Another Window", &show_another_window);   // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
-            ImGui::Text("Hello from another window!");
-            if (ImGui::Button("Close Me"))
-                show_another_window = false;
-            ImGui::End();
-        }
-
-        // Rendering
-        ImGui::Render();
-        ImGui_ImplMetal_RenderDrawData(ImGui::GetDrawData(), commandBuffer, renderEncoder);
-
-        [renderEncoder popDebugGroup];
-        [renderEncoder endEncoding];
-
-        [commandBuffer presentDrawable:drawable];
-        [commandBuffer commit];
     }
 
     // Cleanup

examples/example_glfw_opengl2/Makefile

@@ -52,7 +52,7 @@ ifeq ($(findstring MINGW,$(UNAME_S)),MINGW)
 	ECHO_MESSAGE = "MinGW"
 	LIBS += -lglfw3 -lgdi32 -lopengl32 -limm32
 
-	CXXFLAGS += -I../libs/gl3w `pkg-config --cflags glfw3`
+	CXXFLAGS += `pkg-config --cflags glfw3`
 	CFLAGS = $(CXXFLAGS)
 endif
 

examples/example_glfw_opengl2/main.cpp

@@ -59,7 +59,7 @@ int main(int, char**)
     // - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple.
     // - If the file cannot be loaded, the function will return NULL. Please handle those errors in your application (e.g. use an assertion, or display an error and quit).
     // - The fonts will be rasterized at a given size (w/ oversampling) and stored into a texture when calling ImFontAtlas::Build()/GetTexDataAsXXXX(), which ImGui_ImplXXXX_NewFrame below will call.
-    // - Read 'misc/fonts/README.txt' for more instructions and details.
+    // - Read 'docs/FONTS.txt' for more instructions and details.
     // - Remember that in C/C++ if you want to include a backslash \ in a string literal you need to write a double backslash \\ !
     //io.Fonts->AddFontDefault();
     //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Roboto-Medium.ttf", 16.0f);
@@ -134,9 +134,9 @@ int main(int, char**)
         glClearColor(clear_color.x, clear_color.y, clear_color.z, clear_color.w);
         glClear(GL_COLOR_BUFFER_BIT);
 
-        // If you are using this code with non-legacy OpenGL header/contexts (which you should not, prefer using imgui_impl_opengl3.cpp!!), 
+        // If you are using this code with non-legacy OpenGL header/contexts (which you should not, prefer using imgui_impl_opengl3.cpp!!),
         // you may need to backup/reset/restore current shader using the commented lines below.
-        //GLint last_program; 
+        //GLint last_program;
         //glGetIntegerv(GL_CURRENT_PROGRAM, &last_program);
         //glUseProgram(0);
         ImGui_ImplOpenGL2_RenderDrawData(ImGui::GetDrawData());

examples/example_glfw_opengl3/Makefile

@@ -31,7 +31,7 @@ LIBS =
 
 ## Using OpenGL loader: gl3w [default]
 SOURCES += ../libs/gl3w/GL/gl3w.c
-CXXFLAGS += -I../libs/gl3w
+CXXFLAGS += -I../libs/gl3w -DIMGUI_IMPL_OPENGL_LOADER_GL3W
 
 ## Using OpenGL loader: glew
 ## (This assumes a system-wide installation)
@@ -41,6 +41,10 @@ CXXFLAGS += -I../libs/gl3w
 # SOURCES += ../libs/glad/src/glad.c
 # CXXFLAGS += -I../libs/glad/include -DIMGUI_IMPL_OPENGL_LOADER_GLAD
 
+## Using OpenGL loader: glbinding
+## (This assumes a system-wide installation)
+# CXXFLAGS += -lglbinding -DIMGUI_IMPL_OPENGL_LOADER_GLBINDING
+
 ##---------------------------------------------------------------------
 ## BUILD FLAGS PER PLATFORM
 ##---------------------------------------------------------------------

examples/example_glfw_opengl3/main.cpp

@@ -17,6 +17,11 @@
 #include <GL/glew.h>    // Initialize with glewInit()
 #elif defined(IMGUI_IMPL_OPENGL_LOADER_GLAD)
 #include <glad/glad.h>  // Initialize with gladLoadGL()
+#elif defined(IMGUI_IMPL_OPENGL_LOADER_GLBINDING)
+#define GLFW_INCLUDE_NONE         // GLFW including OpenGL headers causes ambiguity or multiple definition errors.
+#include <glbinding/glbinding.h>  // Initialize with glbinding::initialize()
+#include <glbinding/gl/gl.h>
+using namespace gl;
 #else
 #include IMGUI_IMPL_OPENGL_LOADER_CUSTOM
 #endif
@@ -74,6 +79,9 @@ int main(int, char**)
     bool err = glewInit() != GLEW_OK;
 #elif defined(IMGUI_IMPL_OPENGL_LOADER_GLAD)
     bool err = gladLoadGL() == 0;
+#elif defined(IMGUI_IMPL_OPENGL_LOADER_GLBINDING)
+    bool err = false;
+    glbinding::initialize([](const char* name) { return (glbinding::ProcAddress)glfwGetProcAddress(name); });
 #else
     bool err = false; // If you use IMGUI_IMPL_OPENGL_LOADER_CUSTOM, your loader is likely to requires some form of initialization.
 #endif
@@ -103,7 +111,7 @@ int main(int, char**)
     // - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple.
     // - If the file cannot be loaded, the function will return NULL. Please handle those errors in your application (e.g. use an assertion, or display an error and quit).
     // - The fonts will be rasterized at a given size (w/ oversampling) and stored into a texture when calling ImFontAtlas::Build()/GetTexDataAsXXXX(), which ImGui_ImplXXXX_NewFrame below will call.
-    // - Read 'misc/fonts/README.txt' for more instructions and details.
+    // - Read 'docs/FONTS.txt' for more instructions and details.
     // - Remember that in C/C++ if you want to include a backslash \ in a string literal you need to write a double backslash \\ !
     //io.Fonts->AddFontDefault();
     //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Roboto-Medium.ttf", 16.0f);

examples/example_glfw_vulkan/main.cpp

@@ -4,7 +4,7 @@
 // Important note to the reader who wish to integrate imgui_impl_vulkan.cpp/.h in their own engine/app.
 // - Common ImGui_ImplVulkan_XXX functions and structures are used to interface with imgui_impl_vulkan.cpp/.h.
 //   You will use those if you want to use this rendering back-end in your engine/app.
-// - Helper ImGui_ImplVulkanH_XXX functions and structures are only used by this example (main.cpp) and by 
+// - Helper ImGui_ImplVulkanH_XXX functions and structures are only used by this example (main.cpp) and by
 //   the back-end itself (imgui_impl_vulkan.cpp), but should PROBABLY NOT be used by your own engine/app code.
 // Read comments in imgui_impl_vulkan.h.
 
@@ -194,7 +194,7 @@ static void SetupVulkan(const char** extensions, uint32_t extensions_count)
     }
 }
 
-// All the ImGui_ImplVulkanH_XXX structures/functions are optional helpers used by the demo. 
+// All the ImGui_ImplVulkanH_XXX structures/functions are optional helpers used by the demo.
 // Your real engine/app may not use them.
 static void SetupVulkanWindow(ImGui_ImplVulkanH_Window* wd, VkSurfaceKHR surface, int width, int height)
 {
@@ -400,7 +400,7 @@ int main(int, char**)
     // - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple.
     // - If the file cannot be loaded, the function will return NULL. Please handle those errors in your application (e.g. use an assertion, or display an error and quit).
     // - The fonts will be rasterized at a given size (w/ oversampling) and stored into a texture when calling ImFontAtlas::Build()/GetTexDataAsXXXX(), which ImGui_ImplXXXX_NewFrame below will call.
-    // - Read 'misc/fonts/README.txt' for more instructions and details.
+    // - Read 'docs/FONTS.txt' for more instructions and details.
     // - Remember that in C/C++ if you want to include a backslash \ in a string literal you need to write a double backslash \\ !
     //io.Fonts->AddFontDefault();
     //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Roboto-Medium.ttf", 16.0f);

examples/example_glut_opengl2/Makefile

@@ -41,7 +41,13 @@ endif
 
 ifeq ($(findstring MINGW,$(UNAME_S)),MINGW)
 	ECHO_MESSAGE = "MinGW"
-	LIBS += -lgdi32 -lopengl32 -limm32 -lglut
+	LIBS += -lgdi32 -lopengl32 -limm32
+ifeq ($(shell pkg-config freeglut --exists 2> /dev/null && echo yes || echo no),yes)
+	CXXFLAGS += $(shell pkg-config freeglut --cflags)
+	LIBS += $(shell pkg-config freeglut --libs)
+else
+	LIBS += -lglut
+endif
 	CFLAGS = $(CXXFLAGS)
 endif
 

examples/example_glut_opengl2/main.cpp

@@ -2,12 +2,12 @@
 // If you are new to dear imgui, see examples/README.txt and documentation at the top of imgui.cpp.
 
 // !!! GLUT/FreeGLUT IS OBSOLETE SOFTWARE. Using GLUT is not recommended unless you really miss the 90's. !!!
-// !!! If someone or something is teaching you GLUT in 2019, you are being abused. Please show some resistance. !!!
+// !!! If someone or something is teaching you GLUT in 2020, you are being abused. Please show some resistance. !!!
 // !!! Nowadays, prefer using GLFW or SDL instead!
 
 #include "imgui.h"
-#include "../imgui_impl_glut.h"
-#include "../imgui_impl_opengl2.h"
+#include "imgui_impl_glut.h"
+#include "imgui_impl_opengl2.h"
 #ifdef __APPLE__
     #include <GLUT/glut.h>
 #else
@@ -125,7 +125,7 @@ int main(int argc, char** argv)
     // - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple.
     // - If the file cannot be loaded, the function will return NULL. Please handle those errors in your application (e.g. use an assertion, or display an error and quit).
     // - The fonts will be rasterized at a given size (w/ oversampling) and stored into a texture when calling ImFontAtlas::Build()/GetTexDataAsXXXX(), which ImGui_ImplXXXX_NewFrame below will call.
-    // - Read 'misc/fonts/README.txt' for more instructions and details.
+    // - Read 'docs/FONTS.txt' for more instructions and details.
     // - Remember that in C/C++ if you want to include a backslash \ in a string literal you need to write a double backslash \\ !
     //io.Fonts->AddFontDefault();
     //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Roboto-Medium.ttf", 16.0f);

examples/example_marmalade/main.cpp

@@ -34,7 +34,7 @@ int main(int, char**)
     // - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple.
     // - If the file cannot be loaded, the function will return NULL. Please handle those errors in your application (e.g. use an assertion, or display an error and quit).
     // - The fonts will be rasterized at a given size (w/ oversampling) and stored into a texture when calling ImFontAtlas::Build()/GetTexDataAsXXXX(), which ImGui_ImplXXXX_NewFrame below will call.
-    // - Read 'misc/fonts/README.txt' for more instructions and details.
+    // - Read 'docs/FONTS.txt' for more instructions and details.
     // - Remember that in C/C++ if you want to include a backslash \ in a string literal you need to write a double backslash \\ !
     //io.Fonts->AddFontDefault();
     //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Roboto-Medium.ttf", 16.0f);

examples/example_null/Makefile

@@ -4,31 +4,46 @@
 #
 
 EXE = example_null
+EXTRA_WARNINGS ?= 0
 SOURCES = main.cpp
 SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 UNAME_S := $(shell uname -s)
 
-CXXFLAGS = -I../ -I../../
+CXXFLAGS += -I../ -I../../
 CXXFLAGS += -g -Wall -Wformat
 LIBS =
 
+# We use the EXTRA_WARNINGS flag on our CI setup to eagerly catch zealous warnings
+ifeq ($(EXTRA_WARNINGS), 1)
+	CXXFLAGS += -Wno-zero-as-null-pointer-constant -Wno-double-promotion -Wno-variadic-macros
+endif
+
 ##---------------------------------------------------------------------
 ## BUILD FLAGS PER PLATFORM
 ##---------------------------------------------------------------------
 
 ifeq ($(UNAME_S), Linux) #LINUX
 	ECHO_MESSAGE = "Linux"
+	ifneq ($(EXTRA_WARNINGS), 0)
+		CXXFLAGS += -Wextra -pedantic
+	endif
 	CFLAGS = $(CXXFLAGS)
 endif
 
 ifeq ($(UNAME_S), Darwin) #APPLE
 	ECHO_MESSAGE = "Mac OS X"
+	ifneq ($(EXTRA_WARNINGS), 0)
+		CXXFLAGS += -Weverything -Wno-reserved-id-macro -Wno-c++98-compat-pedantic -Wno-padded -Wno-c++11-long-long
+	endif
 	CFLAGS = $(CXXFLAGS)
 endif
 
 ifeq ($(findstring MINGW,$(UNAME_S)),MINGW)
 	ECHO_MESSAGE = "MinGW"
+	ifneq ($(EXTRA_WARNINGS), 0)
+		CXXFLAGS += -Wextra -pedantic
+	endif
 	CFLAGS = $(CXXFLAGS)
 endif
 
@@ -45,10 +60,6 @@ endif
 %.o:../../%.cpp
 	$(CXX) $(CXXFLAGS) -c -o $@ $<
 
-%.o:../libs/gl3w/GL/%.c
-# %.o:../libs/glad/src/%.c
-	$(CC) $(CFLAGS) -c -o $@ $<
-
 all: $(EXE)
 	@echo Build complete for $(ECHO_MESSAGE)
 

examples/example_null/build_win32.bat

@@ -1,3 +1,3 @@
 @REM Build for Visual Studio compiler. Run your copy of vcvars32.bat or vcvarsall.bat to setup command-line compiler.
 mkdir Debug
-cl /nologo /Zi /MD /I ..\.. *.cpp ..\..\*.cpp /FeDebug/example_null.exe /FoDebug/ /link gdi32.lib shell32.lib
+cl /nologo /Zi /MD /I ..\.. %* *.cpp ..\..\*.cpp /FeDebug/example_null.exe /FoDebug/ /link gdi32.lib shell32.lib

examples/example_sdl_directx11/example_sdl_directx11.vcxproj

@@ -1,181 +1,181 @@
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-      <Platform>x64</Platform>
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-    <ProjectConfiguration Include="Release|Win32">
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-      <Platform>Win32</Platform>
-    </ProjectConfiguration>
-    <ProjectConfiguration Include="Release|x64">
-      <Configuration>Release</Configuration>
-      <Platform>x64</Platform>
-    </ProjectConfiguration>
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-  <PropertyGroup Label="Globals">
-    <ProjectGuid>{9E1987E3-1F19-45CA-B9C9-D31E791836D8}</ProjectGuid>
-    <RootNamespace>example_sdl_directx11</RootNamespace>
-    <WindowsTargetPlatformVersion>8.1</WindowsTargetPlatformVersion>
-    <ProjectName>example_sdl_directx11</ProjectName>
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-  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
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-    <CharacterSet>MultiByte</CharacterSet>
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-  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
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+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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 </Project>

examples/example_sdl_directx11/example_sdl_directx11.vcxproj.filters

@@ -1,57 +1,57 @@
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-      <Filter>imgui</Filter>
-    </ClCompile>
-    <ClCompile Include="..\imgui_impl_sdl.cpp">
-      <Filter>sources</Filter>
-    </ClCompile>
-  </ItemGroup>
-  <ItemGroup>
-    <None Include="..\README.txt" />
-    <None Include="..\..\misc\natvis\imgui.natvis">
-      <Filter>sources</Filter>
-    </None>
-  </ItemGroup>
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup>
+    <Filter Include="imgui">
+      <UniqueIdentifier>{0587d7a3-f2ce-4d56-b84f-a0005d3bfce6}</UniqueIdentifier>
+    </Filter>
+    <Filter Include="sources">
+      <UniqueIdentifier>{08e36723-ce4f-4cff-9662-c40801cf1acf}</UniqueIdentifier>
+    </Filter>
+  </ItemGroup>
+  <ItemGroup>
+    <ClInclude Include="..\..\imconfig.h">
+      <Filter>imgui</Filter>
+    </ClInclude>
+    <ClInclude Include="..\..\imgui.h">
+      <Filter>imgui</Filter>
+    </ClInclude>
+    <ClInclude Include="..\..\imgui_internal.h">
+      <Filter>imgui</Filter>
+    </ClInclude>
+    <ClInclude Include="..\imgui_impl_dx11.h">
+      <Filter>sources</Filter>
+    </ClInclude>
+    <ClInclude Include="..\imgui_impl_sdl.h">
+      <Filter>sources</Filter>
+    </ClInclude>
+  </ItemGroup>
+  <ItemGroup>
+    <ClCompile Include="..\..\imgui.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
+    <ClCompile Include="main.cpp">
+      <Filter>sources</Filter>
+    </ClCompile>
+    <ClCompile Include="..\..\imgui_demo.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
+    <ClCompile Include="..\..\imgui_draw.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
+    <ClCompile Include="..\imgui_impl_dx11.cpp">
+      <Filter>sources</Filter>
+    </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
+    <ClCompile Include="..\imgui_impl_sdl.cpp">
+      <Filter>sources</Filter>
+    </ClCompile>
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="..\README.txt" />
+    <None Include="..\..\misc\natvis\imgui.natvis">
+      <Filter>sources</Filter>
+    </None>
+  </ItemGroup>
 </Project>

examples/example_sdl_directx11/main.cpp

@@ -26,6 +26,8 @@ void CleanupRenderTarget();
 int main(int, char**)
 {
     // Setup SDL
+    // (Some versions of SDL before <2.0.10 appears to have performance/stalling issues on a minority of Windows systems,
+    // depending on whether SDL_INIT_GAMECONTROLLER is enabled or disabled.. updating to latest version of SDL is recommended!)
     if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_TIMER | SDL_INIT_GAMECONTROLLER) != 0)
     {
         printf("Error: %s\n", SDL_GetError());
@@ -67,7 +69,7 @@ int main(int, char**)
     // - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple.
     // - If the file cannot be loaded, the function will return NULL. Please handle those errors in your application (e.g. use an assertion, or display an error and quit).
     // - The fonts will be rasterized at a given size (w/ oversampling) and stored into a texture when calling ImFontAtlas::Build()/GetTexDataAsXXXX(), which ImGui_ImplXXXX_NewFrame below will call.
-    // - Read 'misc/fonts/README.txt' for more instructions and details.
+    // - Read 'docs/FONTS.txt' for more instructions and details.
     // - Remember that in C/C++ if you want to include a backslash \ in a string literal you need to write a double backslash \\ !
     //io.Fonts->AddFontDefault();
     //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Roboto-Medium.ttf", 16.0f);

examples/example_sdl_opengl2/main.cpp

@@ -17,6 +17,8 @@
 int main(int, char**)
 {
     // Setup SDL
+    // (Some versions of SDL before <2.0.10 appears to have performance/stalling issues on a minority of Windows systems,
+    // depending on whether SDL_INIT_GAMECONTROLLER is enabled or disabled.. updating to latest version of SDL is recommended!)
     if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_TIMER | SDL_INIT_GAMECONTROLLER) != 0)
     {
         printf("Error: %s\n", SDL_GetError());
@@ -55,7 +57,7 @@ int main(int, char**)
     // - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple.
     // - If the file cannot be loaded, the function will return NULL. Please handle those errors in your application (e.g. use an assertion, or display an error and quit).
     // - The fonts will be rasterized at a given size (w/ oversampling) and stored into a texture when calling ImFontAtlas::Build()/GetTexDataAsXXXX(), which ImGui_ImplXXXX_NewFrame below will call.
-    // - Read 'misc/fonts/README.txt' for more instructions and details.
+    // - Read 'docs/FONTS.txt' for more instructions and details.
     // - Remember that in C/C++ if you want to include a backslash \ in a string literal you need to write a double backslash \\ !
     //io.Fonts->AddFontDefault();
     //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Roboto-Medium.ttf", 16.0f);

examples/example_sdl_opengl3/Makefile

@@ -31,7 +31,7 @@ LIBS =
 
 ## Using OpenGL loader: gl3w [default]
 SOURCES += ../libs/gl3w/GL/gl3w.c
-CXXFLAGS += -I../libs/gl3w
+CXXFLAGS += -I../libs/gl3w -DIMGUI_IMPL_OPENGL_LOADER_GL3W
 
 ## Using OpenGL loader: glew
 ## (This assumes a system-wide installation)
@@ -41,6 +41,10 @@ CXXFLAGS += -I../libs/gl3w
 # SOURCES += ../libs/glad/src/glad.c
 # CXXFLAGS += -I../libs/glad/include -DIMGUI_IMPL_OPENGL_LOADER_GLAD
 
+## Using OpenGL loader: glbinding
+## (This assumes a system-wide installation)
+# CXXFLAGS += -lglbinding -DIMGUI_IMPL_OPENGL_LOADER_GLBINDING
+
 ##---------------------------------------------------------------------
 ## BUILD FLAGS PER PLATFORM
 ##---------------------------------------------------------------------

examples/example_sdl_opengl3/main.cpp

@@ -19,6 +19,10 @@
 #include <GL/glew.h>    // Initialize with glewInit()
 #elif defined(IMGUI_IMPL_OPENGL_LOADER_GLAD)
 #include <glad/glad.h>  // Initialize with gladLoadGL()
+#elif defined(IMGUI_IMPL_OPENGL_LOADER_GLBINDING)
+#include <glbinding/glbinding.h>  // Initialize with glbinding::initialize()
+#include <glbinding/gl/gl.h>
+using namespace gl;
 #else
 #include IMGUI_IMPL_OPENGL_LOADER_CUSTOM
 #endif
@@ -27,6 +31,8 @@
 int main(int, char**)
 {
     // Setup SDL
+    // (Some versions of SDL before <2.0.10 appears to have performance/stalling issues on a minority of Windows systems,
+    // depending on whether SDL_INIT_GAMECONTROLLER is enabled or disabled.. updating to latest version of SDL is recommended!)
     if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_TIMER | SDL_INIT_GAMECONTROLLER) != 0)
     {
         printf("Error: %s\n", SDL_GetError());
@@ -67,6 +73,9 @@ int main(int, char**)
     bool err = glewInit() != GLEW_OK;
 #elif defined(IMGUI_IMPL_OPENGL_LOADER_GLAD)
     bool err = gladLoadGL() == 0;
+#elif defined(IMGUI_IMPL_OPENGL_LOADER_GLBINDING)
+    bool err = false;
+    glbinding::initialize([](const char* name) { return (glbinding::ProcAddress)SDL_GL_GetProcAddress(name); });
 #else
     bool err = false; // If you use IMGUI_IMPL_OPENGL_LOADER_CUSTOM, your loader is likely to requires some form of initialization.
 #endif
@@ -96,7 +105,7 @@ int main(int, char**)
     // - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple.
     // - If the file cannot be loaded, the function will return NULL. Please handle those errors in your application (e.g. use an assertion, or display an error and quit).
     // - The fonts will be rasterized at a given size (w/ oversampling) and stored into a texture when calling ImFontAtlas::Build()/GetTexDataAsXXXX(), which ImGui_ImplXXXX_NewFrame below will call.
-    // - Read 'misc/fonts/README.txt' for more instructions and details.
+    // - Read 'docs/FONTS.txt' for more instructions and details.
     // - Remember that in C/C++ if you want to include a backslash \ in a string literal you need to write a double backslash \\ !
     //io.Fonts->AddFontDefault();
     //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Roboto-Medium.ttf", 16.0f);

examples/example_sdl_vulkan/main.cpp

@@ -4,7 +4,7 @@
 // Important note to the reader who wish to integrate imgui_impl_vulkan.cpp/.h in their own engine/app.
 // - Common ImGui_ImplVulkan_XXX functions and structures are used to interface with imgui_impl_vulkan.cpp/.h.
 //   You will use those if you want to use this rendering back-end in your engine/app.
-// - Helper ImGui_ImplVulkanH_XXX functions and structures are only used by this example (main.cpp) and by 
+// - Helper ImGui_ImplVulkanH_XXX functions and structures are only used by this example (main.cpp) and by
 //   the back-end itself (imgui_impl_vulkan.cpp), but should PROBABLY NOT be used by your own engine/app code.
 // Read comments in imgui_impl_vulkan.h.
 
@@ -186,7 +186,7 @@ static void SetupVulkan(const char** extensions, uint32_t extensions_count)
     }
 }
 
-// All the ImGui_ImplVulkanH_XXX structures/functions are optional helpers used by the demo. 
+// All the ImGui_ImplVulkanH_XXX structures/functions are optional helpers used by the demo.
 // Your real engine/app may not use them.
 static void SetupVulkanWindow(ImGui_ImplVulkanH_Window* wd, VkSurfaceKHR surface, int width, int height)
 {
@@ -384,7 +384,7 @@ int main(int, char**)
     // - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple.
     // - If the file cannot be loaded, the function will return NULL. Please handle those errors in your application (e.g. use an assertion, or display an error and quit).
     // - The fonts will be rasterized at a given size (w/ oversampling) and stored into a texture when calling ImFontAtlas::Build()/GetTexDataAsXXXX(), which ImGui_ImplXXXX_NewFrame below will call.
-    // - Read 'misc/fonts/README.txt' for more instructions and details.
+    // - Read 'docs/FONTS.txt' for more instructions and details.
     // - Remember that in C/C++ if you want to include a backslash \ in a string literal you need to write a double backslash \\ !
     //io.Fonts->AddFontDefault();
     //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Roboto-Medium.ttf", 16.0f);

examples/example_win32_directx10/example_win32_directx10.vcxproj

@@ -121,7 +121,7 @@
       <GenerateDebugInformation>true</GenerateDebugInformation>
       <EnableCOMDATFolding>true</EnableCOMDATFolding>
       <OptimizeReferences>true</OptimizeReferences>
-      <AdditionalDependencies>d3d10.lib;d3dcompiler.lib;dxgi.lib;imm32.lib;%(AdditionalDependencies)</AdditionalDependencies>
+      <AdditionalDependencies>d3d10.lib;d3dcompiler.lib;dxgi.lib;%(AdditionalDependencies)</AdditionalDependencies>
       <AdditionalLibraryDirectories>$(DXSDK_DIR)/Lib/x86;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
       <SubSystem>Console</SubSystem>
     </Link>
@@ -139,7 +139,7 @@
       <GenerateDebugInformation>true</GenerateDebugInformation>
       <EnableCOMDATFolding>true</EnableCOMDATFolding>
       <OptimizeReferences>true</OptimizeReferences>
-      <AdditionalDependencies>d3d10.lib;d3dcompiler.lib;dxgi.lib;imm32.lib;%(AdditionalDependencies)</AdditionalDependencies>
+      <AdditionalDependencies>d3d10.lib;d3dcompiler.lib;dxgi.lib;%(AdditionalDependencies)</AdditionalDependencies>
       <AdditionalLibraryDirectories>$(DXSDK_DIR)/Lib/x64;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
       <SubSystem>Console</SubSystem>
     </Link>

examples/example_win32_directx10/main.cpp

@@ -62,7 +62,7 @@ int main(int, char**)
     // - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple.
     // - If the file cannot be loaded, the function will return NULL. Please handle those errors in your application (e.g. use an assertion, or display an error and quit).
     // - The fonts will be rasterized at a given size (w/ oversampling) and stored into a texture when calling ImFontAtlas::Build()/GetTexDataAsXXXX(), which ImGui_ImplXXXX_NewFrame below will call.
-    // - Read 'misc/fonts/README.txt' for more instructions and details.
+    // - Read 'docs/FONTS.txt' for more instructions and details.
     // - Remember that in C/C++ if you want to include a backslash \ in a string literal you need to write a double backslash \\ !
     //io.Fonts->AddFontDefault();
     //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Roboto-Medium.ttf", 16.0f);

examples/example_win32_directx11/example_win32_directx11.vcxproj

@@ -120,7 +120,7 @@
       <GenerateDebugInformation>true</GenerateDebugInformation>
       <EnableCOMDATFolding>true</EnableCOMDATFolding>
       <OptimizeReferences>true</OptimizeReferences>
-      <AdditionalDependencies>d3d11.lib;d3dcompiler.lib;dxgi.lib;imm32.lib;%(AdditionalDependencies)</AdditionalDependencies>
+      <AdditionalDependencies>d3d11.lib;d3dcompiler.lib;dxgi.lib;%(AdditionalDependencies)</AdditionalDependencies>
       <AdditionalLibraryDirectories>$(DXSDK_DIR)/Lib/x86;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
       <SubSystem>Console</SubSystem>
     </Link>
@@ -138,7 +138,7 @@
       <GenerateDebugInformation>true</GenerateDebugInformation>
       <EnableCOMDATFolding>true</EnableCOMDATFolding>
       <OptimizeReferences>true</OptimizeReferences>
-      <AdditionalDependencies>d3d11.lib;d3dcompiler.lib;dxgi.lib;imm32.lib;%(AdditionalDependencies)</AdditionalDependencies>
+      <AdditionalDependencies>d3d11.lib;d3dcompiler.lib;dxgi.lib;%(AdditionalDependencies)</AdditionalDependencies>
       <AdditionalLibraryDirectories>$(DXSDK_DIR)/Lib/x64;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
       <SubSystem>Console</SubSystem>
     </Link>

examples/example_win32_directx11/main.cpp

@@ -62,7 +62,7 @@ int main(int, char**)
     // - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple.
     // - If the file cannot be loaded, the function will return NULL. Please handle those errors in your application (e.g. use an assertion, or display an error and quit).
     // - The fonts will be rasterized at a given size (w/ oversampling) and stored into a texture when calling ImFontAtlas::Build()/GetTexDataAsXXXX(), which ImGui_ImplXXXX_NewFrame below will call.
-    // - Read 'misc/fonts/README.txt' for more instructions and details.
+    // - Read 'docs/FONTS.txt' for more instructions and details.
     // - Remember that in C/C++ if you want to include a backslash \ in a string literal you need to write a double backslash \\ !
     //io.Fonts->AddFontDefault();
     //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Roboto-Medium.ttf", 16.0f);

examples/example_win32_directx12/main.cpp

@@ -9,7 +9,12 @@
 #include <dxgi1_4.h>
 #include <tchar.h>
 
-#define DX12_ENABLE_DEBUG_LAYER     0
+//#define DX12_ENABLE_DEBUG_LAYER
+
+#ifdef DX12_ENABLE_DEBUG_LAYER
+#include <dxgidebug.h>
+#pragma comment(lib, "dxguid.lib")
+#endif
 
 struct FrameContext
 {
@@ -80,7 +85,7 @@ int main(int, char**)
     // Setup Platform/Renderer bindings
     ImGui_ImplWin32_Init(hwnd);
     ImGui_ImplDX12_Init(g_pd3dDevice, NUM_FRAMES_IN_FLIGHT,
-        DXGI_FORMAT_R8G8B8A8_UNORM,
+        DXGI_FORMAT_R8G8B8A8_UNORM, g_pd3dSrvDescHeap,
         g_pd3dSrvDescHeap->GetCPUDescriptorHandleForHeapStart(),
         g_pd3dSrvDescHeap->GetGPUDescriptorHandleForHeapStart());
 
@@ -89,7 +94,7 @@ int main(int, char**)
     // - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple.
     // - If the file cannot be loaded, the function will return NULL. Please handle those errors in your application (e.g. use an assertion, or display an error and quit).
     // - The fonts will be rasterized at a given size (w/ oversampling) and stored into a texture when calling ImFontAtlas::Build()/GetTexDataAsXXXX(), which ImGui_ImplXXXX_NewFrame below will call.
-    // - Read 'misc/fonts/README.txt' for more instructions and details.
+    // - Read 'docs/FONTS.txt' for more instructions and details.
     // - Remember that in C/C++ if you want to include a backslash \ in a string literal you need to write a double backslash \\ !
     //io.Fonts->AddFontDefault();
     //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Roboto-Medium.ttf", 16.0f);
@@ -233,15 +238,14 @@ bool CreateDeviceD3D(HWND hWnd)
         sd.Stereo = FALSE;
     }
 
-    if (DX12_ENABLE_DEBUG_LAYER)
+#ifdef DX12_ENABLE_DEBUG_LAYER
+    ID3D12Debug* pdx12Debug = NULL;
+    if (SUCCEEDED(D3D12GetDebugInterface(IID_PPV_ARGS(&pdx12Debug))))
     {
-        ID3D12Debug* dx12Debug = NULL;
-        if (SUCCEEDED(D3D12GetDebugInterface(IID_PPV_ARGS(&dx12Debug))))
-        {
-            dx12Debug->EnableDebugLayer();
-            dx12Debug->Release();
-        }
+        pdx12Debug->EnableDebugLayer();
+        pdx12Debug->Release();
     }
+#endif
 
     D3D_FEATURE_LEVEL featureLevel = D3D_FEATURE_LEVEL_11_0;
     if (D3D12CreateDevice(NULL, featureLevel, IID_PPV_ARGS(&g_pd3dDevice)) != S_OK)
@@ -329,6 +333,15 @@ void CleanupDeviceD3D()
     if (g_fence) { g_fence->Release(); g_fence = NULL; }
     if (g_fenceEvent) { CloseHandle(g_fenceEvent); g_fenceEvent = NULL; }
     if (g_pd3dDevice) { g_pd3dDevice->Release(); g_pd3dDevice = NULL; }
+
+#ifdef DX12_ENABLE_DEBUG_LAYER
+    IDXGIDebug1* pDebug = NULL;
+    if (SUCCEEDED(DXGIGetDebugInterface1(0, IID_PPV_ARGS(&pDebug))))
+    {
+        pDebug->ReportLiveObjects(DXGI_DEBUG_ALL, DXGI_DEBUG_RLO_SUMMARY);
+        pDebug->Release();
+    }
+#endif
 }
 
 void CreateRenderTarget()

examples/example_win32_directx9/main.cpp

@@ -60,7 +60,7 @@ int main(int, char**)
     // - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple.
     // - If the file cannot be loaded, the function will return NULL. Please handle those errors in your application (e.g. use an assertion, or display an error and quit).
     // - The fonts will be rasterized at a given size (w/ oversampling) and stored into a texture when calling ImFontAtlas::Build()/GetTexDataAsXXXX(), which ImGui_ImplXXXX_NewFrame below will call.
-    // - Read 'misc/fonts/README.txt' for more instructions and details.
+    // - Read 'docs/FONTS.txt' for more instructions and details.
     // - Remember that in C/C++ if you want to include a backslash \ in a string literal you need to write a double backslash \\ !
     //io.Fonts->AddFontDefault();
     //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Roboto-Medium.ttf", 16.0f);

examples/imgui_impl_allegro5.cpp

@@ -2,7 +2,7 @@
 // (Info: Allegro 5 is a cross-platform general purpose library for handling windows, inputs, graphics, etc.)
 
 // Implemented features:
-//  [X] Renderer: User texture binding. Use 'ALLEGRO_BITMAP*' as ImTextureID. Read the FAQ about ImTextureID in imgui.cpp.
+//  [X] Renderer: User texture binding. Use 'ALLEGRO_BITMAP*' as ImTextureID. Read the FAQ about ImTextureID!
 //  [X] Platform: Clipboard support (from Allegro 5.1.12)
 //  [X] Platform: Mouse cursor shape and visibility. Disable with 'io.ConfigFlags |= ImGuiConfigFlags_NoMouseCursorChange'.
 // Issues:
@@ -15,6 +15,7 @@
 
 // CHANGELOG
 // (minor and older changes stripped away, please see git history for details)
+//  2019-12-05: Inputs: Added support for ImGuiMouseCursor_NotAllowed mouse cursor.
 //  2019-07-21: Inputs: Added mapping for ImGuiKey_KeyPadEnter.
 //  2019-05-11: Inputs: Don't filter character value from ALLEGRO_EVENT_KEY_CHAR before calling AddInputCharacter().
 //  2019-04-30: Renderer: Added support for special ImDrawCallback_ResetRenderState callback to reset render state.
@@ -25,7 +26,7 @@
 //  2018-06-13: Renderer: Backup/restore transform and clipping rectangle.
 //  2018-06-11: Misc: Setup io.BackendFlags ImGuiBackendFlags_HasMouseCursors flag + honor ImGuiConfigFlags_NoMouseCursorChange flag.
 //  2018-04-18: Misc: Renamed file from imgui_impl_a5.cpp to imgui_impl_allegro5.cpp.
-//  2018-04-18: Misc: Added support for 32-bits vertex indices to avoid conversion at runtime. Added imconfig_allegro5.h to enforce 32-bit indices when included from imgui.h.
+//  2018-04-18: Misc: Added support for 32-bit vertex indices to avoid conversion at runtime. Added imconfig_allegro5.h to enforce 32-bit indices when included from imgui.h.
 //  2018-02-16: Misc: Obsoleted the io.RenderDrawListsFn callback and exposed ImGui_ImplAllegro5_RenderDrawData() in the .h file so you can call it yourself.
 //  2018-02-06: Misc: Removed call to ImGui::Shutdown() which is not available from 1.60 WIP, user needs to call CreateContext/DestroyContext themselves.
 //  2018-02-06: Inputs: Added mapping for ImGuiKey_Space.
@@ -108,7 +109,7 @@ void ImGui_ImplAllegro5_RenderDrawData(ImDrawData* draw_data)
         const ImDrawList* cmd_list = draw_data->CmdLists[n];
 
         // Allegro's implementation of al_draw_indexed_prim() for DX9 is completely broken. Unindex our buffers ourselves.
-        // FIXME-OPT: Unfortunately Allegro doesn't support 32-bits packed colors so we have to convert them to 4 float as well..
+        // FIXME-OPT: Unfortunately Allegro doesn't support 32-bit packed colors so we have to convert them to 4 float as well..
         static ImVector<ImDrawVertAllegro> vertices;
         vertices.resize(cmd_list->IdxBuffer.Size);
         for (int i = 0; i < cmd_list->IdxBuffer.Size; i++)
@@ -257,7 +258,7 @@ bool ImGui_ImplAllegro5_Init(ALLEGRO_DISPLAY* display)
     io.BackendPlatformName = io.BackendRendererName = "imgui_impl_allegro5";
 
     // Create custom vertex declaration.
-    // Unfortunately Allegro doesn't support 32-bits packed colors so we have to convert them to 4 floats.
+    // Unfortunately Allegro doesn't support 32-bit packed colors so we have to convert them to 4 floats.
     // We still use a custom declaration to use 'ALLEGRO_PRIM_TEX_COORD' instead of 'ALLEGRO_PRIM_TEX_COORD_PIXEL' else we can't do a reliable conversion.
     ALLEGRO_VERTEX_ELEMENT elems[] =
     {
@@ -390,6 +391,7 @@ static void ImGui_ImplAllegro5_UpdateMouseCursor()
         case ImGuiMouseCursor_ResizeEW:     cursor_id = ALLEGRO_SYSTEM_MOUSE_CURSOR_RESIZE_E; break;
         case ImGuiMouseCursor_ResizeNESW:   cursor_id = ALLEGRO_SYSTEM_MOUSE_CURSOR_RESIZE_NE; break;
         case ImGuiMouseCursor_ResizeNWSE:   cursor_id = ALLEGRO_SYSTEM_MOUSE_CURSOR_RESIZE_NW; break;
+        case ImGuiMouseCursor_NotAllowed:   cursor_id = ALLEGRO_SYSTEM_MOUSE_CURSOR_UNAVAILABLE; break;
         }
         al_set_system_mouse_cursor(g_Display, cursor_id);
     }

examples/imgui_impl_allegro5.h

@@ -2,7 +2,7 @@
 // (Info: Allegro 5 is a cross-platform general purpose library for handling windows, inputs, graphics, etc.)
 
 // Implemented features:
-//  [X] Renderer: User texture binding. Use 'ALLEGRO_BITMAP*' as ImTextureID. Read the FAQ about ImTextureID in imgui.cpp.
+//  [X] Renderer: User texture binding. Use 'ALLEGRO_BITMAP*' as ImTextureID. Read the FAQ about ImTextureID!
 //  [X] Platform: Clipboard support (from Allegro 5.1.12)
 //  [X] Platform: Mouse cursor shape and visibility. Disable with 'io.ConfigFlags |= ImGuiConfigFlags_NoMouseCursorChange'.
 // Issues:

examples/imgui_impl_dx10.cpp

@@ -2,8 +2,8 @@
 // This needs to be used along with a Platform Binding (e.g. Win32)
 
 // Implemented features:
-//  [X] Renderer: User texture binding. Use 'ID3D10ShaderResourceView*' as ImTextureID. Read the FAQ about ImTextureID in imgui.cpp.
-//  [X] Renderer: Support for large meshes (64k+ vertices) with 16-bits indices.
+//  [X] Renderer: User texture binding. Use 'ID3D10ShaderResourceView*' as ImTextureID. Read the FAQ about ImTextureID!
+//  [X] Renderer: Support for large meshes (64k+ vertices) with 16-bit indices.
 
 // You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this.
 // If you are new to dear imgui, read examples/README.txt and read the documentation at the top of imgui.cpp.

examples/imgui_impl_dx10.h

@@ -2,8 +2,8 @@
 // This needs to be used along with a Platform Binding (e.g. Win32)
 
 // Implemented features:
-//  [X] Renderer: User texture binding. Use 'ID3D10ShaderResourceView*' as ImTextureID. Read the FAQ about ImTextureID in imgui.cpp.
-//  [X] Renderer: Support for large meshes (64k+ vertices) with 16-bits indices.
+//  [X] Renderer: User texture binding. Use 'ID3D10ShaderResourceView*' as ImTextureID. Read the FAQ about ImTextureID!
+//  [X] Renderer: Support for large meshes (64k+ vertices) with 16-bit indices.
 
 // You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this.
 // If you are new to dear imgui, read examples/README.txt and read the documentation at the top of imgui.cpp.

examples/imgui_impl_dx11.cpp

@@ -2,8 +2,8 @@
 // This needs to be used along with a Platform Binding (e.g. Win32)
 
 // Implemented features:
-//  [X] Renderer: User texture binding. Use 'ID3D11ShaderResourceView*' as ImTextureID. Read the FAQ about ImTextureID in imgui.cpp.
-//  [X] Renderer: Support for large meshes (64k+ vertices) with 16-bits indices.
+//  [X] Renderer: User texture binding. Use 'ID3D11ShaderResourceView*' as ImTextureID. Read the FAQ about ImTextureID!
+//  [X] Renderer: Support for large meshes (64k+ vertices) with 16-bit indices.
 
 // You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this.
 // If you are new to dear imgui, read examples/README.txt and read the documentation at the top of imgui.cpp

examples/imgui_impl_dx11.h

@@ -2,8 +2,8 @@
 // This needs to be used along with a Platform Binding (e.g. Win32)
 
 // Implemented features:
-//  [X] Renderer: User texture binding. Use 'ID3D11ShaderResourceView*' as ImTextureID. Read the FAQ about ImTextureID in imgui.cpp.
-//  [X] Renderer: Support for large meshes (64k+ vertices) with 16-bits indices.
+//  [X] Renderer: User texture binding. Use 'ID3D11ShaderResourceView*' as ImTextureID. Read the FAQ about ImTextureID!
+//  [X] Renderer: Support for large meshes (64k+ vertices) with 16-bit indices.
 
 // You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this.
 // If you are new to dear imgui, read examples/README.txt and read the documentation at the top of imgui.cpp.

examples/imgui_impl_dx12.cpp

@@ -2,8 +2,8 @@
 // This needs to be used along with a Platform Binding (e.g. Win32)
 
 // Implemented features:
-//  [X] Renderer: User texture binding. Use 'D3D12_GPU_DESCRIPTOR_HANDLE' as ImTextureID. Read the FAQ about ImTextureID in imgui.cpp.
-//  [X] Renderer: Support for large meshes (64k+ vertices) with 16-bits indices.
+//  [X] Renderer: User texture binding. Use 'D3D12_GPU_DESCRIPTOR_HANDLE' as ImTextureID. Read the FAQ about ImTextureID!
+//  [X] Renderer: Support for large meshes (64k+ vertices) with 16-bit indices.
 // Issues:
 //  [ ] 64-bit only for now! (Because sizeof(ImTextureId) == sizeof(void*)). See github.com/ocornut/imgui/pull/301
 
@@ -13,6 +13,7 @@
 
 // CHANGELOG
 // (minor and older changes stripped away, please see git history for details)
+//  2019-10-18: DirectX12: *BREAKING CHANGE* Added extra ID3D12DescriptorHeap parameter to ImGui_ImplDX12_Init() function.
 //  2019-05-29: DirectX12: Added support for large mesh (64K+ vertices), enable ImGuiBackendFlags_RendererHasVtxOffset flag.
 //  2019-04-30: DirectX12: Added support for special ImDrawCallback_ResetRenderState callback to reset render state.
 //  2019-03-29: Misc: Various minor tidying up.
@@ -56,6 +57,14 @@ static FrameResources*  g_pFrameResources = NULL;
 static UINT             g_numFramesInFlight = 0;
 static UINT             g_frameIndex = UINT_MAX;
 
+template<typename T>
+static void SafeRelease(T*& res)
+{
+    if (res)
+        res->Release();
+    res = NULL;
+}
+
 struct VERTEX_CONSTANT_BUFFER
 {
     float   mvp[4][4];
@@ -132,7 +141,7 @@ void ImGui_ImplDX12_RenderDrawData(ImDrawData* draw_data, ID3D12GraphicsCommandL
     // Create and grow vertex/index buffers if needed
     if (fr->VertexBuffer == NULL || fr->VertexBufferSize < draw_data->TotalVtxCount)
     {
-        if (fr->VertexBuffer != NULL) { fr->VertexBuffer->Release(); fr->VertexBuffer = NULL; }
+        SafeRelease(fr->VertexBuffer);
         fr->VertexBufferSize = draw_data->TotalVtxCount + 5000;
         D3D12_HEAP_PROPERTIES props;
         memset(&props, 0, sizeof(D3D12_HEAP_PROPERTIES));
@@ -155,7 +164,7 @@ void ImGui_ImplDX12_RenderDrawData(ImDrawData* draw_data, ID3D12GraphicsCommandL
     }
     if (fr->IndexBuffer == NULL || fr->IndexBufferSize < draw_data->TotalIdxCount)
     {
-        if (fr->IndexBuffer != NULL) { fr->IndexBuffer->Release(); fr->IndexBuffer = NULL; }
+        SafeRelease(fr->IndexBuffer);
         fr->IndexBufferSize = draw_data->TotalIdxCount + 10000;
         D3D12_HEAP_PROPERTIES props;
         memset(&props, 0, sizeof(D3D12_HEAP_PROPERTIES));
@@ -375,8 +384,7 @@ static void ImGui_ImplDX12_CreateFontsTexture()
         srvDesc.Texture2D.MostDetailedMip = 0;
         srvDesc.Shader4ComponentMapping = D3D12_DEFAULT_SHADER_4_COMPONENT_MAPPING;
         g_pd3dDevice->CreateShaderResourceView(pTexture, &srvDesc, g_hFontSrvCpuDescHandle);
-        if (g_pFontTextureResource != NULL)
-            g_pFontTextureResource->Release();
+        SafeRelease(g_pFontTextureResource);
         g_pFontTextureResource = pTexture;
     }
 
@@ -588,21 +596,24 @@ void    ImGui_ImplDX12_InvalidateDeviceObjects()
     if (!g_pd3dDevice)
         return;
 
+    SafeRelease(g_pVertexShaderBlob);
+    SafeRelease(g_pPixelShaderBlob);
+    SafeRelease(g_pRootSignature);
+    SafeRelease(g_pPipelineState);
+    SafeRelease(g_pFontTextureResource);
+
     ImGuiIO& io = ImGui::GetIO();
-    if (g_pVertexShaderBlob) { g_pVertexShaderBlob->Release(); g_pVertexShaderBlob = NULL; }
-    if (g_pPixelShaderBlob) { g_pPixelShaderBlob->Release(); g_pPixelShaderBlob = NULL; }
-    if (g_pRootSignature) { g_pRootSignature->Release(); g_pRootSignature = NULL; }
-    if (g_pPipelineState) { g_pPipelineState->Release(); g_pPipelineState = NULL; }
-    if (g_pFontTextureResource) { g_pFontTextureResource->Release(); g_pFontTextureResource = NULL; io.Fonts->TexID = NULL; } // We copied g_pFontTextureView to io.Fonts->TexID so let's clear that as well.
+    io.Fonts->TexID = NULL; // We copied g_pFontTextureView to io.Fonts->TexID so let's clear that as well.
+
     for (UINT i = 0; i < g_numFramesInFlight; i++)
     {
         FrameResources* fr = &g_pFrameResources[i];
-        if (fr->IndexBuffer)  { fr->IndexBuffer->Release();  fr->IndexBuffer = NULL; }
-        if (fr->VertexBuffer) { fr->VertexBuffer->Release(); fr->VertexBuffer = NULL; }
+        SafeRelease(fr->IndexBuffer);
+        SafeRelease(fr->VertexBuffer);
     }
 }
 
-bool ImGui_ImplDX12_Init(ID3D12Device* device, int num_frames_in_flight, DXGI_FORMAT rtv_format,
+bool ImGui_ImplDX12_Init(ID3D12Device* device, int num_frames_in_flight, DXGI_FORMAT rtv_format, ID3D12DescriptorHeap* cbv_srv_heap,
                          D3D12_CPU_DESCRIPTOR_HANDLE font_srv_cpu_desc_handle, D3D12_GPU_DESCRIPTOR_HANDLE font_srv_gpu_desc_handle)
 {
     // Setup back-end capabilities flags
@@ -617,6 +628,7 @@ bool ImGui_ImplDX12_Init(ID3D12Device* device, int num_frames_in_flight, DXGI_FO
     g_pFrameResources = new FrameResources[num_frames_in_flight];
     g_numFramesInFlight = num_frames_in_flight;
     g_frameIndex = UINT_MAX;
+    IM_UNUSED(cbv_srv_heap); // Unused in master branch (will be used by multi-viewports)
 
     // Create buffers with a default size (they will later be grown as needed)
     for (int i = 0; i < num_frames_in_flight; i++)

examples/imgui_impl_dx12.h

@@ -2,8 +2,8 @@
 // This needs to be used along with a Platform Binding (e.g. Win32)
 
 // Implemented features:
-//  [X] Renderer: User texture binding. Use 'D3D12_GPU_DESCRIPTOR_HANDLE' as ImTextureID. Read the FAQ about ImTextureID in imgui.cpp.
-//  [X] Renderer: Support for large meshes (64k+ vertices) with 16-bits indices.
+//  [X] Renderer: User texture binding. Use 'D3D12_GPU_DESCRIPTOR_HANDLE' as ImTextureID. Read the FAQ about ImTextureID!
+//  [X] Renderer: Support for large meshes (64k+ vertices) with 16-bit indices.
 // Issues:
 //  [ ] 64-bit only for now! (Because sizeof(ImTextureId) == sizeof(void*)). See github.com/ocornut/imgui/pull/301
 
@@ -15,6 +15,7 @@
 
 enum DXGI_FORMAT;
 struct ID3D12Device;
+struct ID3D12DescriptorHeap;
 struct ID3D12GraphicsCommandList;
 struct D3D12_CPU_DESCRIPTOR_HANDLE;
 struct D3D12_GPU_DESCRIPTOR_HANDLE;
@@ -23,7 +24,7 @@ struct D3D12_GPU_DESCRIPTOR_HANDLE;
 // Before calling the render function, caller must prepare cmd_list by resetting it and setting the appropriate
 // render target and descriptor heap that contains font_srv_cpu_desc_handle/font_srv_gpu_desc_handle.
 // font_srv_cpu_desc_handle and font_srv_gpu_desc_handle are handles to a single SRV descriptor to use for the internal font texture.
-IMGUI_IMPL_API bool     ImGui_ImplDX12_Init(ID3D12Device* device, int num_frames_in_flight, DXGI_FORMAT rtv_format,
+IMGUI_IMPL_API bool     ImGui_ImplDX12_Init(ID3D12Device* device, int num_frames_in_flight, DXGI_FORMAT rtv_format, ID3D12DescriptorHeap* cbv_srv_heap,
                                             D3D12_CPU_DESCRIPTOR_HANDLE font_srv_cpu_desc_handle, D3D12_GPU_DESCRIPTOR_HANDLE font_srv_gpu_desc_handle);
 IMGUI_IMPL_API void     ImGui_ImplDX12_Shutdown();
 IMGUI_IMPL_API void     ImGui_ImplDX12_NewFrame();

examples/imgui_impl_dx9.cpp

@@ -2,8 +2,8 @@
 // This needs to be used along with a Platform Binding (e.g. Win32)
 
 // Implemented features:
-//  [X] Renderer: User texture binding. Use 'LPDIRECT3DTEXTURE9' as ImTextureID. Read the FAQ about ImTextureID in imgui.cpp.
-//  [X] Renderer: Support for large meshes (64k+ vertices) with 16-bits indices.
+//  [X] Renderer: User texture binding. Use 'LPDIRECT3DTEXTURE9' as ImTextureID. Read the FAQ about ImTextureID!
+//  [X] Renderer: Support for large meshes (64k+ vertices) with 16-bit indices.
 
 // You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this.
 // If you are new to dear imgui, read examples/README.txt and read the documentation at the top of imgui.cpp.

examples/imgui_impl_dx9.h

@@ -2,8 +2,8 @@
 // This needs to be used along with a Platform Binding (e.g. Win32)
 
 // Implemented features:
-//  [X] Renderer: User texture binding. Use 'LPDIRECT3DTEXTURE9' as ImTextureID. Read the FAQ about ImTextureID in imgui.cpp.
-//  [X] Renderer: Support for large meshes (64k+ vertices) with 16-bits indices.
+//  [X] Renderer: User texture binding. Use 'LPDIRECT3DTEXTURE9' as ImTextureID. Read the FAQ about ImTextureID!
+//  [X] Renderer: Support for large meshes (64k+ vertices) with 16-bit indices.
 
 // You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this.
 // If you are new to dear imgui, read examples/README.txt and read the documentation at the top of imgui.cpp.

examples/imgui_impl_glfw.cpp

@@ -6,7 +6,7 @@
 // Implemented features:
 //  [X] Platform: Clipboard support.
 //  [X] Platform: Gamepad support. Enable with 'io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad'.
-//  [x] Platform: Mouse cursor shape and visibility. Disable with 'io.ConfigFlags |= ImGuiConfigFlags_NoMouseCursorChange'. FIXME: 3 cursors types are missing from GLFW.
+//  [X] Platform: Mouse cursor shape and visibility. Disable with 'io.ConfigFlags |= ImGuiConfigFlags_NoMouseCursorChange' (note: the resizing cursors requires GLFW 3.4+).
 //  [X] Platform: Keyboard arrays indexed using GLFW_KEY_* codes, e.g. ImGui::IsKeyPressed(GLFW_KEY_SPACE).
 
 // You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this.
@@ -15,6 +15,9 @@
 
 // CHANGELOG
 // (minor and older changes stripped away, please see git history for details)
+//  2020-01-17: Inputs: Disable error callback while assigning mouse cursors because some X11 setup don't have them and it generates errors.
+//  2019-12-05: Inputs: Added support for new mouse cursors added in GLFW 3.4+ (resizing cursors, not allowed cursor).
+//  2019-10-18: Misc: Previously installed user callbacks are now restored on shutdown.
 //  2019-07-21: Inputs: Added mapping for ImGuiKey_KeyPadEnter.
 //  2019-05-11: Inputs: Don't filter value from character callback before calling AddInputCharacter().
 //  2019-03-12: Misc: Preserve DisplayFramebufferScale when main window is minimized.
@@ -49,6 +52,11 @@
 #define GLFW_HAS_WINDOW_ALPHA         (GLFW_VERSION_MAJOR * 1000 + GLFW_VERSION_MINOR * 100 >= 3300) // 3.3+ glfwSetWindowOpacity
 #define GLFW_HAS_PER_MONITOR_DPI      (GLFW_VERSION_MAJOR * 1000 + GLFW_VERSION_MINOR * 100 >= 3300) // 3.3+ glfwGetMonitorContentScale
 #define GLFW_HAS_VULKAN               (GLFW_VERSION_MAJOR * 1000 + GLFW_VERSION_MINOR * 100 >= 3200) // 3.2+ glfwCreateWindowSurface
+#ifdef GLFW_RESIZE_NESW_CURSOR  // let's be nice to people who pulled GLFW between 2019-04-16 (3.4 define) and 2019-11-29 (cursors defines) // FIXME: Remove when GLFW 3.4 is released?
+#define GLFW_HAS_NEW_CURSORS          (GLFW_VERSION_MAJOR * 1000 + GLFW_VERSION_MINOR * 100 >= 3400) // 3.4+ GLFW_RESIZE_ALL_CURSOR, GLFW_RESIZE_NESW_CURSOR, GLFW_RESIZE_NWSE_CURSOR, GLFW_NOT_ALLOWED_CURSOR
+#else
+#define GLFW_HAS_NEW_CURSORS          (0)
+#endif
 
 // Data
 enum GlfwClientApi
@@ -61,7 +69,8 @@ static GLFWwindow*          g_Window = NULL;    // Main window
 static GlfwClientApi        g_ClientApi = GlfwClientApi_Unknown;
 static double               g_Time = 0.0;
 static bool                 g_MouseJustPressed[5] = { false, false, false, false, false };
-static GLFWcursor*          g_MouseCursors[ImGuiMouseCursor_COUNT] = { 0 };
+static GLFWcursor*          g_MouseCursors[ImGuiMouseCursor_COUNT] = {};
+static bool                 g_InstalledCallbacks = false;
 
 // Chain GLFW callbacks: our callbacks will call the user's previously installed callbacks, if any.
 static GLFWmousebuttonfun   g_PrevUserCallbackMousebutton = NULL;
@@ -113,7 +122,11 @@ void ImGui_ImplGlfw_KeyCallback(GLFWwindow* window, int key, int scancode, int a
     io.KeyCtrl = io.KeysDown[GLFW_KEY_LEFT_CONTROL] || io.KeysDown[GLFW_KEY_RIGHT_CONTROL];
     io.KeyShift = io.KeysDown[GLFW_KEY_LEFT_SHIFT] || io.KeysDown[GLFW_KEY_RIGHT_SHIFT];
     io.KeyAlt = io.KeysDown[GLFW_KEY_LEFT_ALT] || io.KeysDown[GLFW_KEY_RIGHT_ALT];
+#ifdef _WIN32
+    io.KeySuper = false;
+#else
     io.KeySuper = io.KeysDown[GLFW_KEY_LEFT_SUPER] || io.KeysDown[GLFW_KEY_RIGHT_SUPER];
+#endif
 }
 
 void ImGui_ImplGlfw_CharCallback(GLFWwindow* window, unsigned int c)
@@ -167,14 +180,28 @@ static bool ImGui_ImplGlfw_Init(GLFWwindow* window, bool install_callbacks, Glfw
     io.ImeWindowHandle = (void*)glfwGetWin32Window(g_Window);
 #endif
 
+    // Create mouse cursors
+    // (By design, on X11 cursors are user configurable and some cursors may be missing. When a cursor doesn't exist,
+    // GLFW will emit an error which will often be printed by the app, so we temporarily disable error reporting.
+    // Missing cursors will return NULL and our _UpdateMouseCursor() function will use the Arrow cursor instead.)
+    GLFWerrorfun prev_error_callback = glfwSetErrorCallback(NULL);
     g_MouseCursors[ImGuiMouseCursor_Arrow] = glfwCreateStandardCursor(GLFW_ARROW_CURSOR);
     g_MouseCursors[ImGuiMouseCursor_TextInput] = glfwCreateStandardCursor(GLFW_IBEAM_CURSOR);
-    g_MouseCursors[ImGuiMouseCursor_ResizeAll] = glfwCreateStandardCursor(GLFW_ARROW_CURSOR);   // FIXME: GLFW doesn't have this.
     g_MouseCursors[ImGuiMouseCursor_ResizeNS] = glfwCreateStandardCursor(GLFW_VRESIZE_CURSOR);
     g_MouseCursors[ImGuiMouseCursor_ResizeEW] = glfwCreateStandardCursor(GLFW_HRESIZE_CURSOR);
-    g_MouseCursors[ImGuiMouseCursor_ResizeNESW] = glfwCreateStandardCursor(GLFW_ARROW_CURSOR);  // FIXME: GLFW doesn't have this.
-    g_MouseCursors[ImGuiMouseCursor_ResizeNWSE] = glfwCreateStandardCursor(GLFW_ARROW_CURSOR);  // FIXME: GLFW doesn't have this.
     g_MouseCursors[ImGuiMouseCursor_Hand] = glfwCreateStandardCursor(GLFW_HAND_CURSOR);
+#if GLFW_HAS_NEW_CURSORS
+    g_MouseCursors[ImGuiMouseCursor_ResizeAll] = glfwCreateStandardCursor(GLFW_RESIZE_ALL_CURSOR);
+    g_MouseCursors[ImGuiMouseCursor_ResizeNESW] = glfwCreateStandardCursor(GLFW_RESIZE_NESW_CURSOR);
+    g_MouseCursors[ImGuiMouseCursor_ResizeNWSE] = glfwCreateStandardCursor(GLFW_RESIZE_NWSE_CURSOR);
+    g_MouseCursors[ImGuiMouseCursor_NotAllowed] = glfwCreateStandardCursor(GLFW_NOT_ALLOWED_CURSOR);
+#else
+    g_MouseCursors[ImGuiMouseCursor_ResizeAll] = glfwCreateStandardCursor(GLFW_ARROW_CURSOR);
+    g_MouseCursors[ImGuiMouseCursor_ResizeNESW] = glfwCreateStandardCursor(GLFW_ARROW_CURSOR);
+    g_MouseCursors[ImGuiMouseCursor_ResizeNWSE] = glfwCreateStandardCursor(GLFW_ARROW_CURSOR);
+    g_MouseCursors[ImGuiMouseCursor_NotAllowed] = glfwCreateStandardCursor(GLFW_ARROW_CURSOR);
+#endif
+    glfwSetErrorCallback(prev_error_callback);
 
     // Chain GLFW callbacks: our callbacks will call the user's previously installed callbacks, if any.
     g_PrevUserCallbackMousebutton = NULL;
@@ -183,6 +210,7 @@ static bool ImGui_ImplGlfw_Init(GLFWwindow* window, bool install_callbacks, Glfw
     g_PrevUserCallbackChar = NULL;
     if (install_callbacks)
     {
+        g_InstalledCallbacks = true;
         g_PrevUserCallbackMousebutton = glfwSetMouseButtonCallback(window, ImGui_ImplGlfw_MouseButtonCallback);
         g_PrevUserCallbackScroll = glfwSetScrollCallback(window, ImGui_ImplGlfw_ScrollCallback);
         g_PrevUserCallbackKey = glfwSetKeyCallback(window, ImGui_ImplGlfw_KeyCallback);
@@ -205,6 +233,15 @@ bool ImGui_ImplGlfw_InitForVulkan(GLFWwindow* window, bool install_callbacks)
 
 void ImGui_ImplGlfw_Shutdown()
 {
+    if (g_InstalledCallbacks)
+    {
+        glfwSetMouseButtonCallback(g_Window, g_PrevUserCallbackMousebutton);
+        glfwSetScrollCallback(g_Window, g_PrevUserCallbackScroll);
+        glfwSetKeyCallback(g_Window, g_PrevUserCallbackKey);
+        glfwSetCharCallback(g_Window, g_PrevUserCallbackChar);
+        g_InstalledCallbacks = false;
+    }
+
     for (ImGuiMouseCursor cursor_n = 0; cursor_n < ImGuiMouseCursor_COUNT; cursor_n++)
     {
         glfwDestroyCursor(g_MouseCursors[cursor_n]);

examples/imgui_impl_glut.cpp

@@ -2,7 +2,7 @@
 // This needs to be used along with a Renderer (e.g. OpenGL2)
 
 // !!! GLUT/FreeGLUT IS OBSOLETE SOFTWARE. Using GLUT is not recommended unless you really miss the 90's. !!!
-// !!! If someone or something is teaching you GLUT in 2019, you are being abused. Please show some resistance. !!!
+// !!! If someone or something is teaching you GLUT in 2020, you are being abused. Please show some resistance. !!!
 // !!! Nowadays, prefer using GLFW or SDL instead!
 
 // Issues:
@@ -39,7 +39,12 @@ static int g_Time = 0;          // Current time, in milliseconds
 bool ImGui_ImplGLUT_Init()
 {
     ImGuiIO& io = ImGui::GetIO();
+
+#ifdef FREEGLUT
+    io.BackendPlatformName ="imgui_impl_glut (freeglut)";
+#else
     io.BackendPlatformName ="imgui_impl_glut";
+#endif
 
     g_Time = 0;
 

examples/imgui_impl_glut.h

@@ -2,7 +2,7 @@
 // This needs to be used along with a Renderer (e.g. OpenGL2)
 
 // !!! GLUT/FreeGLUT IS OBSOLETE SOFTWARE. Using GLUT is not recommended unless you really miss the 90's. !!!
-// !!! If someone or something is teaching you GLUT in 2019, you are being abused. Please show some resistance. !!!
+// !!! If someone or something is teaching you GLUT in 2020, you are being abused. Please show some resistance. !!!
 // !!! Nowadays, prefer using GLFW or SDL instead!
 
 // Issues:

examples/imgui_impl_marmalade.cpp

@@ -2,7 +2,7 @@
 // Marmalade code: Copyright (C) 2015 by Giovanni Zito (this file is part of Dear ImGui)
 
 // Implemented features:
-//  [X] Renderer: User texture binding. Use 'CIwTexture*' as ImTextureID. Read the FAQ about ImTextureID in imgui.cpp.
+//  [X] Renderer: User texture binding. Use 'CIwTexture*' as ImTextureID. Read the FAQ about ImTextureID!
 // Missing features:
 //  [ ] Renderer: Clipping rectangles are not honored.
 

examples/imgui_impl_marmalade.h

@@ -2,7 +2,7 @@
 // Marmalade code: Copyright (C) 2015 by Giovanni Zito (this file is part of Dear ImGui)
 
 // Implemented features:
-//  [X] Renderer: User texture binding. Use 'CIwTexture*' as ImTextureID. Read the FAQ about ImTextureID in imgui.cpp.
+//  [X] Renderer: User texture binding. Use 'CIwTexture*' as ImTextureID. Read the FAQ about ImTextureID!
 
 // You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this.
 // If you are new to dear imgui, read examples/README.txt and read the documentation at the top of imgui.cpp.

examples/imgui_impl_metal.h

@@ -2,8 +2,8 @@
 // This needs to be used along with a Platform Binding (e.g. OSX)
 
 // Implemented features:
-//  [X] Renderer: User texture binding. Use 'MTLTexture' as ImTextureID. Read the FAQ about ImTextureID in imgui.cpp.
-//  [X] Renderer: Support for large meshes (64k+ vertices) with 16-bits indices.
+//  [X] Renderer: User texture binding. Use 'MTLTexture' as ImTextureID. Read the FAQ about ImTextureID!
+//  [X] Renderer: Support for large meshes (64k+ vertices) with 16-bit indices.
 
 // You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this.
 // If you are new to dear imgui, read examples/README.txt and read the documentation at the top of imgui.cpp.

examples/imgui_impl_metal.mm

@@ -2,8 +2,8 @@
 // This needs to be used along with a Platform Binding (e.g. OSX)
 
 // Implemented features:
-//  [X] Renderer: User texture binding. Use 'MTLTexture' as ImTextureID. Read the FAQ about ImTextureID in imgui.cpp.
-//  [X] Renderer: Support for large meshes (64k+ vertices) with 16-bits indices.
+//  [X] Renderer: User texture binding. Use 'MTLTexture' as ImTextureID. Read the FAQ about ImTextureID!
+//  [X] Renderer: Support for large meshes (64k+ vertices) with 16-bit indices.
 
 // You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this.
 // If you are new to dear imgui, read examples/README.txt and read the documentation at the top of imgui.cpp.

examples/imgui_impl_opengl2.cpp

@@ -2,7 +2,7 @@
 // This needs to be used along with a Platform Binding (e.g. GLFW, SDL, Win32, custom..)
 
 // Implemented features:
-//  [X] Renderer: User texture binding. Use 'GLuint' OpenGL texture identifier as void*/ImTextureID. Read the FAQ about ImTextureID in imgui.cpp.
+//  [X] Renderer: User texture binding. Use 'GLuint' OpenGL texture identifier as void*/ImTextureID. Read the FAQ about ImTextureID!
 
 // You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this.
 // If you are new to dear imgui, read examples/README.txt and read the documentation at the top of imgui.cpp.
@@ -18,6 +18,7 @@
 
 // CHANGELOG
 // (minor and older changes stripped away, please see git history for details)
+//  2020-01-23: OpenGL: Explicitly backup, setup and restore GL_TEXTURE_ENV to increase compatibility with legacy OpenGL applications.
 //  2019-04-30: OpenGL: Added support for special ImDrawCallback_ResetRenderState callback to reset render state.
 //  2019-02-11: OpenGL: Projecting clipping rectangles correctly using draw_data->FramebufferScale to allow multi-viewports for retina display.
 //  2018-11-30: Misc: Setting up io.BackendRendererName so it can be displayed in the About Window.
@@ -89,6 +90,7 @@ static void ImGui_ImplOpenGL2_SetupRenderState(ImDrawData* draw_data, int fb_wid
     glEnableClientState(GL_COLOR_ARRAY);
     glEnable(GL_TEXTURE_2D);
     glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
+    glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
 
     // If you are using this code with non-legacy OpenGL header/contexts (which you should not, prefer using imgui_impl_opengl3.cpp!!),
     // you may need to backup/reset/restore current shader using the lines below. DO NOT MODIFY THIS FILE! Add the code in your calling function:
@@ -126,6 +128,7 @@ void ImGui_ImplOpenGL2_RenderDrawData(ImDrawData* draw_data)
     GLint last_polygon_mode[2]; glGetIntegerv(GL_POLYGON_MODE, last_polygon_mode);
     GLint last_viewport[4]; glGetIntegerv(GL_VIEWPORT, last_viewport);
     GLint last_scissor_box[4]; glGetIntegerv(GL_SCISSOR_BOX, last_scissor_box);
+    GLint last_tex_env_mode; glGetTexEnviv(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, &last_tex_env_mode);
     glPushAttrib(GL_ENABLE_BIT | GL_COLOR_BUFFER_BIT | GL_TRANSFORM_BIT);
 
     // Setup desired GL state
@@ -193,6 +196,7 @@ void ImGui_ImplOpenGL2_RenderDrawData(ImDrawData* draw_data)
     glPolygonMode(GL_FRONT, (GLenum)last_polygon_mode[0]); glPolygonMode(GL_BACK, (GLenum)last_polygon_mode[1]);
     glViewport(last_viewport[0], last_viewport[1], (GLsizei)last_viewport[2], (GLsizei)last_viewport[3]);
     glScissor(last_scissor_box[0], last_scissor_box[1], (GLsizei)last_scissor_box[2], (GLsizei)last_scissor_box[3]);
+    glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, last_tex_env_mode);
 }
 
 bool ImGui_ImplOpenGL2_CreateFontsTexture()
@@ -201,7 +205,7 @@ bool ImGui_ImplOpenGL2_CreateFontsTexture()
     ImGuiIO& io = ImGui::GetIO();
     unsigned char* pixels;
     int width, height;
-    io.Fonts->GetTexDataAsRGBA32(&pixels, &width, &height);   // Load as RGBA 32-bits (75% of the memory is wasted, but default font is so small) because it is more likely to be compatible with user's existing shaders. If your ImTextureId represent a higher-level concept than just a GL texture id, consider calling GetTexDataAsAlpha8() instead to save on GPU memory.
+    io.Fonts->GetTexDataAsRGBA32(&pixels, &width, &height);   // Load as RGBA 32-bit (75% of the memory is wasted, but default font is so small) because it is more likely to be compatible with user's existing shaders. If your ImTextureId represent a higher-level concept than just a GL texture id, consider calling GetTexDataAsAlpha8() instead to save on GPU memory.
 
     // Upload texture to graphics system
     GLint last_texture;

examples/imgui_impl_opengl2.h

@@ -2,7 +2,7 @@
 // This needs to be used along with a Platform Binding (e.g. GLFW, SDL, Win32, custom..)
 
 // Implemented features:
-//  [X] Renderer: User texture binding. Use 'GLuint' OpenGL texture identifier as void*/ImTextureID. Read the FAQ about ImTextureID in imgui.cpp.
+//  [X] Renderer: User texture binding. Use 'GLuint' OpenGL texture identifier as void*/ImTextureID. Read the FAQ about ImTextureID!
 
 // You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this.
 // If you are new to dear imgui, read examples/README.txt and read the documentation at the top of imgui.cpp.

examples/imgui_impl_opengl3.cpp

@@ -4,8 +4,8 @@
 // This needs to be used along with a Platform Binding (e.g. GLFW, SDL, Win32, custom..)
 
 // Implemented features:
-//  [X] Renderer: User texture binding. Use 'GLuint' OpenGL texture identifier as void*/ImTextureID. Read the FAQ about ImTextureID in imgui.cpp.
-//  [x] Renderer: Desktop GL only: Support for large meshes (64k+ vertices) with 16-bits indices.
+//  [X] Renderer: User texture binding. Use 'GLuint' OpenGL texture identifier as void*/ImTextureID. Read the FAQ about ImTextureID!
+//  [x] Renderer: Desktop GL only: Support for large meshes (64k+ vertices) with 16-bit indices.
 
 // You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this.
 // If you are new to dear imgui, read examples/README.txt and read the documentation at the top of imgui.cpp.
@@ -13,6 +13,8 @@
 
 // CHANGELOG
 // (minor and older changes stripped away, please see git history for details)
+//  2020-01-07: OpenGL: Added support for glbindings OpenGL loader.
+//  2019-10-25: OpenGL: Using a combination of GL define and runtime GL version to decide whether to use glDrawElementsBaseVertex(). Fix building with pre-3.2 GL loaders.
 //  2019-09-22: OpenGL: Detect default GL loader using __has_include compiler facility.
 //  2019-09-16: OpenGL: Tweak initialization code to allow application calling ImGui_ImplOpenGL3_CreateFontsTexture() before the first NewFrame() call.
 //  2019-05-29: OpenGL: Desktop GL only: Added support for large mesh (64K+ vertices), enable ImGuiBackendFlags_RendererHasVtxOffset flag.
@@ -77,19 +79,21 @@
 #include "TargetConditionals.h"
 #endif
 
-// Auto-detect GL version
+// Auto-enable GLES on matching platforms
 #if !defined(IMGUI_IMPL_OPENGL_ES2) && !defined(IMGUI_IMPL_OPENGL_ES3)
 #if (defined(__APPLE__) && (TARGET_OS_IOS || TARGET_OS_TV)) || (defined(__ANDROID__))
 #define IMGUI_IMPL_OPENGL_ES3           // iOS, Android  -> GL ES 3, "#version 300 es"
 #undef IMGUI_IMPL_OPENGL_LOADER_GL3W
 #undef IMGUI_IMPL_OPENGL_LOADER_GLEW
 #undef IMGUI_IMPL_OPENGL_LOADER_GLAD
+#undef IMGUI_IMPL_OPENGL_LOADER_GLBINDING
 #undef IMGUI_IMPL_OPENGL_LOADER_CUSTOM
 #elif defined(__EMSCRIPTEN__)
 #define IMGUI_IMPL_OPENGL_ES2           // Emscripten    -> GL ES 2, "#version 100"
 #undef IMGUI_IMPL_OPENGL_LOADER_GL3W
 #undef IMGUI_IMPL_OPENGL_LOADER_GLEW
 #undef IMGUI_IMPL_OPENGL_LOADER_GLAD
+#undef IMGUI_IMPL_OPENGL_LOADER_GLBINDING
 #undef IMGUI_IMPL_OPENGL_LOADER_CUSTOM
 #endif
 #endif
@@ -99,9 +103,9 @@
 #include <GLES2/gl2.h>
 #elif defined(IMGUI_IMPL_OPENGL_ES3)
 #if (defined(__APPLE__) && (TARGET_OS_IOS || TARGET_OS_TV))
-#include <OpenGLES/ES3/gl.h>  // Use GL ES 3
+#include <OpenGLES/ES3/gl.h>    // Use GL ES 3
 #else
-#include <GLES3/gl3.h>  // Use GL ES 3
+#include <GLES3/gl3.h>          // Use GL ES 3
 #endif
 #else
 // About Desktop OpenGL function loaders:
@@ -114,20 +118,25 @@
 #include <GL/glew.h>    // Needs to be initialized with glewInit() in user's code
 #elif defined(IMGUI_IMPL_OPENGL_LOADER_GLAD)
 #include <glad/glad.h>  // Needs to be initialized with gladLoadGL() in user's code
+#elif defined(IMGUI_IMPL_OPENGL_LOADER_GLBINDING)
+#include <glbinding/gl/gl.h>  // Initialize with glbinding::initialize()
+#include <glbinding/glbinding.h>
+using namespace gl;
 #else
 #include IMGUI_IMPL_OPENGL_LOADER_CUSTOM
 #endif
 #endif
 
-// Desktop GL has glDrawElementsBaseVertex() which GL ES and WebGL don't have.
-#if defined(IMGUI_IMPL_OPENGL_ES2) || defined(IMGUI_IMPL_OPENGL_ES3)
-#define IMGUI_IMPL_OPENGL_HAS_DRAW_WITH_BASE_VERTEX     0
+// Desktop GL 3.2+ has glDrawElementsBaseVertex() which GL ES and WebGL don't have.
+#if defined(IMGUI_IMPL_OPENGL_ES2) || defined(IMGUI_IMPL_OPENGL_ES3) || !defined(GL_VERSION_3_2)
+#define IMGUI_IMPL_OPENGL_MAY_HAVE_VTX_OFFSET   0
 #else
-#define IMGUI_IMPL_OPENGL_HAS_DRAW_WITH_BASE_VERTEX     1
+#define IMGUI_IMPL_OPENGL_MAY_HAVE_VTX_OFFSET   1
 #endif
 
 // OpenGL Data
-static char         g_GlslVersionString[32] = "";
+static GLuint       g_GlVersion = 0;                // Extracted at runtime using GL_MAJOR_VERSION, GL_MINOR_VERSION queries.
+static char         g_GlslVersionString[32] = "";   // Specified by user or detected based on compile time GL settings.
 static GLuint       g_FontTexture = 0;
 static GLuint       g_ShaderHandle = 0, g_VertHandle = 0, g_FragHandle = 0;
 static int          g_AttribLocationTex = 0, g_AttribLocationProjMtx = 0;                                // Uniforms location
@@ -137,14 +146,26 @@ static unsigned int g_VboHandle = 0, g_ElementsHandle = 0;
 // Functions
 bool    ImGui_ImplOpenGL3_Init(const char* glsl_version)
 {
+    // Query for GL version
+#if !defined(IMGUI_IMPL_OPENGL_ES2)
+    GLint major, minor;
+    glGetIntegerv(GL_MAJOR_VERSION, &major);
+    glGetIntegerv(GL_MINOR_VERSION, &minor);
+    g_GlVersion = major * 1000 + minor;
+#else
+    g_GlVersion = 2000; // GLES 2
+#endif
+
     // Setup back-end capabilities flags
     ImGuiIO& io = ImGui::GetIO();
     io.BackendRendererName = "imgui_impl_opengl3";
-#if IMGUI_IMPL_OPENGL_HAS_DRAW_WITH_BASE_VERTEX
-    io.BackendFlags |= ImGuiBackendFlags_RendererHasVtxOffset;  // We can honor the ImDrawCmd::VtxOffset field, allowing for large meshes.
+#if IMGUI_IMPL_OPENGL_MAY_HAVE_VTX_OFFSET
+    if (g_GlVersion >= 3200)
+        io.BackendFlags |= ImGuiBackendFlags_RendererHasVtxOffset;  // We can honor the ImDrawCmd::VtxOffset field, allowing for large meshes.
 #endif
 
-    // Store GLSL version string so we can refer to it later in case we recreate shaders. Note: GLSL version is NOT the same as GL version. Leave this to NULL if unsure.
+    // Store GLSL version string so we can refer to it later in case we recreate shaders.
+    // Note: GLSL version is NOT the same as GL version. Leave this to NULL if unsure.
 #if defined(IMGUI_IMPL_OPENGL_ES2)
     if (glsl_version == NULL)
         glsl_version = "#version 100";
@@ -159,9 +180,9 @@ bool    ImGui_ImplOpenGL3_Init(const char* glsl_version)
     strcpy(g_GlslVersionString, glsl_version);
     strcat(g_GlslVersionString, "\n");
 
-    // Dummy construct to make it easily visible in the IDE and debugger which GL loader has been selected. 
+    // Dummy construct to make it easily visible in the IDE and debugger which GL loader has been selected.
     // The code actually never uses the 'gl_loader' variable! It is only here so you can read it!
-    // If auto-detection fails or doesn't select the same GL loader file as used by your application, 
+    // If auto-detection fails or doesn't select the same GL loader file as used by your application,
     // you are likely to get a crash below.
     // You can explicitly select a loader by using '#define IMGUI_IMPL_OPENGL_LOADER_XXX' in imconfig.h or compiler command-line.
     const char* gl_loader = "Unknown";
@@ -172,7 +193,9 @@ bool    ImGui_ImplOpenGL3_Init(const char* glsl_version)
     gl_loader = "GLEW";
 #elif defined(IMGUI_IMPL_OPENGL_LOADER_GLAD)
     gl_loader = "GLAD";
-#else IMGUI_IMPL_OPENGL_LOADER_CUSTOM
+#elif defined(IMGUI_IMPL_OPENGL_LOADER_GLBINDING)
+    gl_loader = "glbinding";
+#else // IMGUI_IMPL_OPENGL_LOADER_CUSTOM
     gl_loader = "Custom";
 #endif
 
@@ -344,11 +367,12 @@ void    ImGui_ImplOpenGL3_RenderDrawData(ImDrawData* draw_data)
 
                     // Bind texture, Draw
                     glBindTexture(GL_TEXTURE_2D, (GLuint)(intptr_t)pcmd->TextureId);
-#if IMGUI_IMPL_OPENGL_HAS_DRAW_WITH_BASE_VERTEX
-                    glDrawElementsBaseVertex(GL_TRIANGLES, (GLsizei)pcmd->ElemCount, sizeof(ImDrawIdx) == 2 ? GL_UNSIGNED_SHORT : GL_UNSIGNED_INT, (void*)(intptr_t)(pcmd->IdxOffset * sizeof(ImDrawIdx)), (GLint)pcmd->VtxOffset);
-#else
-                    glDrawElements(GL_TRIANGLES, (GLsizei)pcmd->ElemCount, sizeof(ImDrawIdx) == 2 ? GL_UNSIGNED_SHORT : GL_UNSIGNED_INT, (void*)(intptr_t)(pcmd->IdxOffset * sizeof(ImDrawIdx)));
+#if IMGUI_IMPL_OPENGL_MAY_HAVE_VTX_OFFSET
+                    if (g_GlVersion >= 3200)
+                        glDrawElementsBaseVertex(GL_TRIANGLES, (GLsizei)pcmd->ElemCount, sizeof(ImDrawIdx) == 2 ? GL_UNSIGNED_SHORT : GL_UNSIGNED_INT, (void*)(intptr_t)(pcmd->IdxOffset * sizeof(ImDrawIdx)), (GLint)pcmd->VtxOffset);
+                    else
 #endif
+                    glDrawElements(GL_TRIANGLES, (GLsizei)pcmd->ElemCount, sizeof(ImDrawIdx) == 2 ? GL_UNSIGNED_SHORT : GL_UNSIGNED_INT, (void*)(intptr_t)(pcmd->IdxOffset * sizeof(ImDrawIdx)));
                 }
             }
         }
@@ -389,7 +413,7 @@ bool ImGui_ImplOpenGL3_CreateFontsTexture()
     ImGuiIO& io = ImGui::GetIO();
     unsigned char* pixels;
     int width, height;
-    io.Fonts->GetTexDataAsRGBA32(&pixels, &width, &height);   // Load as RGBA 32-bits (75% of the memory is wasted, but default font is so small) because it is more likely to be compatible with user's existing shaders. If your ImTextureId represent a higher-level concept than just a GL texture id, consider calling GetTexDataAsAlpha8() instead to save on GPU memory.
+    io.Fonts->GetTexDataAsRGBA32(&pixels, &width, &height);   // Load as RGBA 32-bit (75% of the memory is wasted, but default font is so small) because it is more likely to be compatible with user's existing shaders. If your ImTextureId represent a higher-level concept than just a GL texture id, consider calling GetTexDataAsAlpha8() instead to save on GPU memory.
 
     // Upload texture to graphics system
     GLint last_texture;

examples/imgui_impl_opengl3.h

@@ -4,8 +4,8 @@
 // This needs to be used along with a Platform Binding (e.g. GLFW, SDL, Win32, custom..)
 
 // Implemented features:
-//  [X] Renderer: User texture binding. Use 'GLuint' OpenGL texture identifier as void*/ImTextureID. Read the FAQ about ImTextureID in imgui.cpp.
-//  [x] Renderer: Desktop GL only: Support for large meshes (64k+ vertices) with 16-bits indices.
+//  [X] Renderer: User texture binding. Use 'GLuint' OpenGL texture identifier as void*/ImTextureID. Read the FAQ about ImTextureID!
+//  [x] Renderer: Desktop GL only: Support for large meshes (64k+ vertices) with 16-bit indices.
 
 // You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this.
 // If you are new to dear imgui, read examples/README.txt and read the documentation at the top of imgui.cpp.
@@ -40,12 +40,13 @@ IMGUI_IMPL_API void     ImGui_ImplOpenGL3_DestroyDeviceObjects();
 //#define IMGUI_IMPL_OPENGL_ES3     // Auto-detected on iOS/Android
 
 // Desktop OpenGL: attempt to detect default GL loader based on available header files.
-// If auto-detection fails or doesn't select the same GL loader file as used by your application, 
-// you are likely to get a crash in ImGui_ImplOpenGL3_Init(). 
+// If auto-detection fails or doesn't select the same GL loader file as used by your application,
+// you are likely to get a crash in ImGui_ImplOpenGL3_Init().
 // You can explicitly select a loader by using '#define IMGUI_IMPL_OPENGL_LOADER_XXX' in imconfig.h or compiler command-line.
 #if !defined(IMGUI_IMPL_OPENGL_LOADER_GL3W) \
  && !defined(IMGUI_IMPL_OPENGL_LOADER_GLEW) \
  && !defined(IMGUI_IMPL_OPENGL_LOADER_GLAD) \
+ && !defined(IMGUI_IMPL_OPENGL_LOADER_GLBINDING) \
  && !defined(IMGUI_IMPL_OPENGL_LOADER_CUSTOM)
     #if defined(__has_include)
         #if __has_include(<GL/glew.h>)
@@ -54,6 +55,8 @@ IMGUI_IMPL_API void     ImGui_ImplOpenGL3_DestroyDeviceObjects();
             #define IMGUI_IMPL_OPENGL_LOADER_GLAD
         #elif __has_include(<GL/gl3w.h>)
             #define IMGUI_IMPL_OPENGL_LOADER_GL3W
+        #elif __has_include(<glbinding/gl/gl.h>)
+            #define IMGUI_IMPL_OPENGL_LOADER_GLBINDING
         #else
             #error "Cannot detect OpenGL loader!"
         #endif

examples/imgui_impl_osx.h

@@ -13,5 +13,5 @@
 
 IMGUI_API bool        ImGui_ImplOSX_Init();
 IMGUI_API void        ImGui_ImplOSX_Shutdown();
-IMGUI_API void        ImGui_ImplOSX_NewFrame(NSView *_Nonnull view);
+IMGUI_API void        ImGui_ImplOSX_NewFrame(NSView *_Nullable view);
 IMGUI_API bool        ImGui_ImplOSX_HandleEvent(NSEvent *_Nonnull event, NSView *_Nullable view);

examples/imgui_impl_osx.mm

@@ -14,7 +14,9 @@
 
 // CHANGELOG
 // (minor and older changes stripped away, please see git history for details)
-//  2019-07-21: Readded clipboard handlers as they are not enabled by default in core imgui.cpp (reverted 2019-05-18 change).
+//  2019-12-05: Inputs: Added support for ImGuiMouseCursor_NotAllowed mouse cursor.
+//  2019-10-11: Inputs:  Fix using Backspace key.
+//  2019-07-21: Re-added clipboard handlers as they are not enabled by default in core imgui.cpp (reverted 2019-05-18 change).
 //  2019-05-28: Inputs: Added mouse cursor shape and visibility support.
 //  2019-05-18: Misc: Removed clipboard handlers as they are now supported by core imgui.cpp.
 //  2019-05-11: Inputs: Don't filter character values before calling AddInputCharacter() apart from 0xF700..0xFFFF range.
@@ -23,7 +25,7 @@
 
 // Data
 static CFAbsoluteTime g_Time = 0.0;
-static NSCursor*      g_MouseCursors[ImGuiMouseCursor_COUNT] = { 0 };
+static NSCursor*      g_MouseCursors[ImGuiMouseCursor_COUNT] = {};
 static bool           g_MouseCursorHidden = false;
 
 // Undocumented methods for creating cursors.
@@ -40,13 +42,13 @@ bool ImGui_ImplOSX_Init()
     ImGuiIO& io = ImGui::GetIO();
 
     // Setup back-end capabilities flags
-    io.BackendFlags |= ImGuiBackendFlags_HasMouseCursors;         // We can honor GetMouseCursor() values (optional)
+    io.BackendFlags |= ImGuiBackendFlags_HasMouseCursors;           // We can honor GetMouseCursor() values (optional)
     //io.BackendFlags |= ImGuiBackendFlags_HasSetMousePos;          // We can honor io.WantSetMousePos requests (optional, rarely used)
     //io.BackendFlags |= ImGuiBackendFlags_PlatformHasViewports;    // We can create multi-viewports on the Platform side (optional)
     //io.BackendFlags |= ImGuiBackendFlags_HasMouseHoveredViewport; // We can set io.MouseHoveredViewport correctly (optional, not easy)
     io.BackendPlatformName = "imgui_impl_osx";
 
-    // Keyboard mapping. ImGui will use those indices to peek into the io.KeyDown[] array.
+    // Keyboard mapping. Dear ImGui will use those indices to peek into the io.KeyDown[] array.
     const int offset_for_function_keys = 256 - 0xF700;
     io.KeyMap[ImGuiKey_Tab]             = '\t';
     io.KeyMap[ImGuiKey_LeftArrow]       = NSLeftArrowFunctionKey + offset_for_function_keys;
@@ -77,6 +79,7 @@ bool ImGui_ImplOSX_Init()
     g_MouseCursors[ImGuiMouseCursor_TextInput] = [NSCursor IBeamCursor];
     g_MouseCursors[ImGuiMouseCursor_ResizeAll] = [NSCursor closedHandCursor];
     g_MouseCursors[ImGuiMouseCursor_Hand] = [NSCursor pointingHandCursor];
+    g_MouseCursors[ImGuiMouseCursor_NotAllowed] = [NSCursor operationNotAllowedCursor];
     g_MouseCursors[ImGuiMouseCursor_ResizeNS] = [NSCursor respondsToSelector:@selector(_windowResizeNorthSouthCursor)] ? [NSCursor _windowResizeNorthSouthCursor] : [NSCursor resizeUpDownCursor];
     g_MouseCursors[ImGuiMouseCursor_ResizeEW] = [NSCursor respondsToSelector:@selector(_windowResizeEastWestCursor)] ? [NSCursor _windowResizeEastWestCursor] : [NSCursor resizeLeftRightCursor];
     g_MouseCursors[ImGuiMouseCursor_ResizeNESW] = [NSCursor respondsToSelector:@selector(_windowResizeNorthEastSouthWestCursor)] ? [NSCursor _windowResizeNorthEastSouthWestCursor] : [NSCursor closedHandCursor];
@@ -150,9 +153,12 @@ void ImGui_ImplOSX_NewFrame(NSView* view)
 {
     // Setup display size
     ImGuiIO& io = ImGui::GetIO();
-    const float dpi = [view.window backingScaleFactor];
-    io.DisplaySize = ImVec2((float)view.bounds.size.width, (float)view.bounds.size.height);
-    io.DisplayFramebufferScale = ImVec2(dpi, dpi);
+    if (view)
+    {
+        const float dpi = [view.window backingScaleFactor];
+        io.DisplaySize = ImVec2((float)view.bounds.size.width, (float)view.bounds.size.height);
+        io.DisplayFramebufferScale = ImVec2(dpi, dpi);
+    }
 
     // Setup time step
     if (g_Time == 0.0)
@@ -229,7 +235,7 @@ bool ImGui_ImplOSX_HandleEvent(NSEvent* event, NSView* view)
             }
         }
         else
-        #endif /*MAC_OS_X_VERSION_MAX_ALLOWED*/
+        #endif // MAC_OS_X_VERSION_MAX_ALLOWED
         {
             wheel_dx = [event deltaX];
             wheel_dy = [event deltaY];
@@ -250,7 +256,7 @@ bool ImGui_ImplOSX_HandleEvent(NSEvent* event, NSView* view)
         for (int i = 0; i < len; i++)
         {
             int c = [str characterAtIndex:i];
-            if (!io.KeyCtrl && !(c >= 0xF700 && c <= 0xFFFF))
+            if (!io.KeyCtrl && !(c >= 0xF700 && c <= 0xFFFF) && c != 127)
                 io.AddInputCharacter((unsigned int)c);
 
             // We must reset in case we're pressing a sequence of special keys while keeping the command pressed

examples/imgui_impl_sdl.cpp

@@ -17,6 +17,8 @@
 
 // CHANGELOG
 // (minor and older changes stripped away, please see git history for details)
+//  2019-12-17: Inputs: On Wayland, use SDL_GetMouseState (because there is no global mouse state).
+//  2019-12-05: Inputs: Added support for ImGuiMouseCursor_NotAllowed mouse cursor.
 //  2019-07-21: Inputs: Added mapping for ImGuiKey_KeyPadEnter.
 //  2019-04-23: Inputs: Added support for SDL_GameController (if ImGuiConfigFlags_NavEnableGamepad is set by user application).
 //  2019-03-12: Misc: Preserve DisplayFramebufferScale when main window is minimized.
@@ -57,8 +59,9 @@
 static SDL_Window*  g_Window = NULL;
 static Uint64       g_Time = 0;
 static bool         g_MousePressed[3] = { false, false, false };
-static SDL_Cursor*  g_MouseCursors[ImGuiMouseCursor_COUNT] = { 0 };
+static SDL_Cursor*  g_MouseCursors[ImGuiMouseCursor_COUNT] = {};
 static char*        g_ClipboardTextData = NULL;
+static bool         g_MouseCanUseGlobalState = true;
 
 static const char* ImGui_ImplSDL2_GetClipboardText(void*)
 {
@@ -112,7 +115,11 @@ bool ImGui_ImplSDL2_ProcessEvent(const SDL_Event* event)
             io.KeyShift = ((SDL_GetModState() & KMOD_SHIFT) != 0);
             io.KeyCtrl = ((SDL_GetModState() & KMOD_CTRL) != 0);
             io.KeyAlt = ((SDL_GetModState() & KMOD_ALT) != 0);
+#ifdef _WIN32
+            io.KeySuper = false;
+#else
             io.KeySuper = ((SDL_GetModState() & KMOD_GUI) != 0);
+#endif
             return true;
         }
     }
@@ -157,6 +164,7 @@ static bool ImGui_ImplSDL2_Init(SDL_Window* window)
     io.GetClipboardTextFn = ImGui_ImplSDL2_GetClipboardText;
     io.ClipboardUserData = NULL;
 
+    // Load mouse cursors
     g_MouseCursors[ImGuiMouseCursor_Arrow] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_ARROW);
     g_MouseCursors[ImGuiMouseCursor_TextInput] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_IBEAM);
     g_MouseCursors[ImGuiMouseCursor_ResizeAll] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_SIZEALL);
@@ -165,6 +173,10 @@ static bool ImGui_ImplSDL2_Init(SDL_Window* window)
     g_MouseCursors[ImGuiMouseCursor_ResizeNESW] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_SIZENESW);
     g_MouseCursors[ImGuiMouseCursor_ResizeNWSE] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_SIZENWSE);
     g_MouseCursors[ImGuiMouseCursor_Hand] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_HAND);
+    g_MouseCursors[ImGuiMouseCursor_NotAllowed] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_NO);
+
+    // Check and store if we are on Wayland
+    g_MouseCanUseGlobalState = strncmp(SDL_GetCurrentVideoDriver(), "wayland", 7) != 0;
 
 #ifdef _WIN32
     SDL_SysWMinfo wmInfo;
@@ -236,13 +248,17 @@ static void ImGui_ImplSDL2_UpdateMousePosAndButtons()
     SDL_Window* focused_window = SDL_GetKeyboardFocus();
     if (g_Window == focused_window)
     {
-        // SDL_GetMouseState() gives mouse position seemingly based on the last window entered/focused(?)
-        // The creation of a new windows at runtime and SDL_CaptureMouse both seems to severely mess up with that, so we retrieve that position globally.
-        int wx, wy;
-        SDL_GetWindowPosition(focused_window, &wx, &wy);
-        SDL_GetGlobalMouseState(&mx, &my);
-        mx -= wx;
-        my -= wy;
+        if (g_MouseCanUseGlobalState)
+        {
+            // SDL_GetMouseState() gives mouse position seemingly based on the last window entered/focused(?)
+            // The creation of a new windows at runtime and SDL_CaptureMouse both seems to severely mess up with that, so we retrieve that position globally.
+            // Won't use this workaround when on Wayland, as there is no global mouse position.
+            int wx, wy;
+            SDL_GetWindowPosition(focused_window, &wx, &wy);
+            SDL_GetGlobalMouseState(&mx, &my);
+            mx -= wx;
+            my -= wy;
+        }
         io.MousePos = ImVec2((float)mx, (float)my);
     }
 

examples/imgui_impl_vulkan.cpp

@@ -2,7 +2,7 @@
 // This needs to be used along with a Platform Binding (e.g. GLFW, SDL, Win32, custom..)
 
 // Implemented features:
-//  [X] Renderer: Support for large meshes (64k+ vertices) with 16-bits indices.
+//  [X] Renderer: Support for large meshes (64k+ vertices) with 16-bit indices.
 // Missing features:
 //  [ ] Renderer: User texture binding. Changes of ImTextureID aren't supported by this binding! See https://github.com/ocornut/imgui/pull/914
 
@@ -16,7 +16,7 @@
 // Important note to the reader who wish to integrate imgui_impl_vulkan.cpp/.h in their own engine/app.
 // - Common ImGui_ImplVulkan_XXX functions and structures are used to interface with imgui_impl_vulkan.cpp/.h.
 //   You will use those if you want to use this rendering back-end in your engine/app.
-// - Helper ImGui_ImplVulkanH_XXX functions and structures are only used by this example (main.cpp) and by 
+// - Helper ImGui_ImplVulkanH_XXX functions and structures are only used by this example (main.cpp) and by
 //   the back-end itself (imgui_impl_vulkan.cpp), but should PROBABLY NOT be used by your own engine/app code.
 // Read comments in imgui_impl_vulkan.h.
 

examples/imgui_impl_vulkan.h

@@ -2,7 +2,7 @@
 // This needs to be used along with a Platform Binding (e.g. GLFW, SDL, Win32, custom..)
 
 // Implemented features:
-//  [X] Renderer: Support for large meshes (64k+ vertices) with 16-bits indices.
+//  [X] Renderer: Support for large meshes (64k+ vertices) with 16-bit indices.
 // Missing features:
 //  [ ] Renderer: User texture binding. Changes of ImTextureID aren't supported by this binding! See https://github.com/ocornut/imgui/pull/914
 
@@ -16,7 +16,7 @@
 // Important note to the reader who wish to integrate imgui_impl_vulkan.cpp/.h in their own engine/app.
 // - Common ImGui_ImplVulkan_XXX functions and structures are used to interface with imgui_impl_vulkan.cpp/.h.
 //   You will use those if you want to use this rendering back-end in your engine/app.
-// - Helper ImGui_ImplVulkanH_XXX functions and structures are only used by this example (main.cpp) and by 
+// - Helper ImGui_ImplVulkanH_XXX functions and structures are only used by this example (main.cpp) and by
 //   the back-end itself (imgui_impl_vulkan.cpp), but should PROBABLY NOT be used by your own engine/app code.
 // Read comments in imgui_impl_vulkan.h.
 
@@ -116,9 +116,9 @@ struct ImGui_ImplVulkanH_Window
     ImGui_ImplVulkanH_Frame*            Frames;
     ImGui_ImplVulkanH_FrameSemaphores*  FrameSemaphores;
 
-    ImGui_ImplVulkanH_Window() 
-    { 
-        memset(this, 0, sizeof(*this)); 
+    ImGui_ImplVulkanH_Window()
+    {
+        memset(this, 0, sizeof(*this));
         PresentMode = VK_PRESENT_MODE_MAX_ENUM_KHR;
         ClearEnable = true;
     }

examples/imgui_impl_win32.cpp

@@ -13,11 +13,23 @@
 #define WIN32_LEAN_AND_MEAN
 #endif
 #include <windows.h>
-#include <XInput.h>
 #include <tchar.h>
 
+// Using XInput library for gamepad (with recent Windows SDK this may leads to executables which won't run on Windows 7)
+#ifndef IMGUI_IMPL_WIN32_DISABLE_GAMEPAD
+#include <XInput.h>
+#else
+#define IMGUI_IMPL_WIN32_DISABLE_LINKING_XINPUT
+#endif
+#if defined(_MSC_VER) && !defined(IMGUI_IMPL_WIN32_DISABLE_LINKING_XINPUT)
+#pragma comment(lib, "xinput")
+//#pragma comment(lib, "Xinput9_1_0")
+#endif
+
 // CHANGELOG
 // (minor and older changes stripped away, please see git history for details)
+//  2020-01-14: Inputs: Added support for #define IMGUI_IMPL_WIN32_DISABLE_GAMEPAD/IMGUI_IMPL_WIN32_DISABLE_LINKING_XINPUT.
+//  2019-12-05: Inputs: Added support for ImGuiMouseCursor_NotAllowed mouse cursor.
 //  2019-05-11: Inputs: Don't filter value from WM_CHAR before calling AddInputCharacter().
 //  2019-01-17: Misc: Using GetForegroundWindow()+IsChild() instead of GetActiveWindow() to be compatible with windows created in a different thread or parent.
 //  2019-01-17: Inputs: Added support for mouse buttons 4 and 5 via WM_XBUTTON* messages.
@@ -39,7 +51,7 @@
 //  2016-11-12: Inputs: Only call Win32 ::SetCursor(NULL) when io.MouseDrawCursor is set.
 
 // Win32 Data
-static HWND                 g_hWnd = 0;
+static HWND                 g_hWnd = NULL;
 static INT64                g_Time = 0;
 static INT64                g_TicksPerSecond = 0;
 static ImGuiMouseCursor     g_LastMouseCursor = ImGuiMouseCursor_COUNT;
@@ -120,6 +132,7 @@ static bool ImGui_ImplWin32_UpdateMouseCursor()
         case ImGuiMouseCursor_ResizeNESW:   win32_cursor = IDC_SIZENESW; break;
         case ImGuiMouseCursor_ResizeNWSE:   win32_cursor = IDC_SIZENWSE; break;
         case ImGuiMouseCursor_Hand:         win32_cursor = IDC_HAND; break;
+        case ImGuiMouseCursor_NotAllowed:   win32_cursor = IDC_NO; break;
         }
         ::SetCursor(::LoadCursor(NULL, win32_cursor));
     }
@@ -147,13 +160,10 @@ static void ImGui_ImplWin32_UpdateMousePos()
                 io.MousePos = ImVec2((float)pos.x, (float)pos.y);
 }
 
-#ifdef _MSC_VER
-#pragma comment(lib, "xinput")
-#endif
-
 // Gamepad navigation mapping
 static void ImGui_ImplWin32_UpdateGamepads()
 {
+#ifndef IMGUI_IMPL_WIN32_DISABLE_GAMEPAD
     ImGuiIO& io = ImGui::GetIO();
     memset(io.NavInputs, 0, sizeof(io.NavInputs));
     if ((io.ConfigFlags & ImGuiConfigFlags_NavEnableGamepad) == 0)
@@ -196,6 +206,7 @@ static void ImGui_ImplWin32_UpdateGamepads()
         #undef MAP_BUTTON
         #undef MAP_ANALOG
     }
+#endif // #ifndef IMGUI_IMPL_WIN32_DISABLE_GAMEPAD
 }
 
 void    ImGui_ImplWin32_NewFrame()

examples/imgui_impl_win32.h

@@ -13,9 +13,13 @@ IMGUI_IMPL_API bool     ImGui_ImplWin32_Init(void* hwnd);
 IMGUI_IMPL_API void     ImGui_ImplWin32_Shutdown();
 IMGUI_IMPL_API void     ImGui_ImplWin32_NewFrame();
 
+// Configuration: Disable gamepad support or linking with xinput.lib
+//#define IMGUI_IMPL_WIN32_DISABLE_GAMEPAD
+//#define IMGUI_IMPL_WIN32_DISABLE_LINKING_XINPUT
+
 // Handler for Win32 messages, update mouse/keyboard data.
 // You may or not need this for your implementation, but it can serve as reference for handling inputs.
 // Intentionally commented out to avoid dragging dependencies on <windows.h> types. You can COPY this line into your .cpp code instead.
-/*
+#if 0
 IMGUI_IMPL_API LRESULT  ImGui_ImplWin32_WndProcHandler(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam);
-*/
+#endif

imconfig.h

@@ -14,6 +14,7 @@
 #pragma once
 
 //---- Define assertion handler. Defaults to calling assert().
+// If your macro uses multiple statements, make sure is enclosed in a 'do { .. } while (0)' block so it can be used as a single statement.
 //#define IM_ASSERT(_EXPR)  MyAssert(_EXPR)
 //#define IM_ASSERT(_EXPR)  ((void)(_EXPR))     // Disable asserts
 
@@ -22,21 +23,23 @@
 //#define IMGUI_API __declspec( dllexport )
 //#define IMGUI_API __declspec( dllimport )
 
-//---- Don't define obsolete functions/enums names. Consider enabling from time to time after updating to avoid using soon-to-be obsolete function/names.
+//---- Don't define obsolete functions/enums/behaviors. Consider enabling from time to time after updating to avoid using soon-to-be obsolete function/names.
 //#define IMGUI_DISABLE_OBSOLETE_FUNCTIONS
 
-//---- Don't implement demo windows functionality (ShowDemoWindow()/ShowStyleEditor()/ShowUserGuide() methods will be empty)
-// It is very strongly recommended to NOT disable the demo windows during development. Please read the comments in imgui_demo.cpp.
-//#define IMGUI_DISABLE_DEMO_WINDOWS
-//#define IMGUI_DISABLE_METRICS_WINDOW
+//---- Disable all of Dear ImGui or don't implement standard windows. 
+// It is very strongly recommended to NOT disable the demo windows during development. Please read comments in imgui_demo.cpp.
+//#define IMGUI_DISABLE                                     // Disable everything: all headers and source files will be empty. 
+//#define IMGUI_DISABLE_DEMO_WINDOWS                        // Disable demo windows: ShowDemoWindow()/ShowStyleEditor() will be empty. Not recommended. 
+//#define IMGUI_DISABLE_METRICS_WINDOW                      // Disable debug/metrics window: ShowMetricsWindow() will be empty.
 
 //---- Don't implement some functions to reduce linkage requirements.
 //#define IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCTIONS   // [Win32] Don't implement default clipboard handler. Won't use and link with OpenClipboard/GetClipboardData/CloseClipboard etc.
 //#define IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCTIONS         // [Win32] Don't implement default IME handler. Won't use and link with ImmGetContext/ImmSetCompositionWindow.
 //#define IMGUI_DISABLE_WIN32_FUNCTIONS                     // [Win32] Won't use and link with any Win32 function (clipboard, ime).
-//#define IMGUI_ENABLE_OSX_DEFAULT_CLIPBOARD_FUNCTIONS      // [OSX] Implement default OSX clipboard handler (need to link with '-framework ApplicationServices').
-//#define IMGUI_DISABLE_FORMAT_STRING_FUNCTIONS             // Don't implement ImFormatString/ImFormatStringV so you can implement them yourself if you don't want to link with vsnprintf.
-//#define IMGUI_DISABLE_MATH_FUNCTIONS                      // Don't implement ImFabs/ImSqrt/ImPow/ImFmod/ImCos/ImSin/ImAcos/ImAtan2 wrapper so you can implement them yourself. Declare your prototypes in imconfig.h.
+//#define IMGUI_ENABLE_OSX_DEFAULT_CLIPBOARD_FUNCTIONS      // [OSX] Implement default OSX clipboard handler (need to link with '-framework ApplicationServices', this is why this is not the default).
+//#define IMGUI_DISABLE_DEFAULT_FORMAT_FUNCTIONS            // Don't implement ImFormatString/ImFormatStringV so you can implement them yourself (e.g. if you don't want to link with vsnprintf)
+//#define IMGUI_DISABLE_DEFAULT_MATH_FUNCTIONS              // Don't implement ImFabs/ImSqrt/ImPow/ImFmod/ImCos/ImSin/ImAcos/ImAtan2 so you can implement them yourself.
+//#define IMGUI_DISABLE_DEFAULT_FILE_FUNCTIONS              // Don't implement ImFileOpen/ImFileClose/ImFileRead/ImFileWrite so you can implement them yourself if you don't want to link with fopen/fclose/fread/fwrite. This will also disable the LogToTTY() function.
 //#define IMGUI_DISABLE_DEFAULT_ALLOCATORS                  // Don't implement default allocators calling malloc()/free() to avoid linking with them. You will need to call ImGui::SetAllocatorFunctions().
 
 //---- Include imgui_user.h at the end of imgui.h as a convenience
@@ -52,6 +55,10 @@
 //#define IMGUI_DISABLE_STB_TRUETYPE_IMPLEMENTATION
 //#define IMGUI_DISABLE_STB_RECT_PACK_IMPLEMENTATION
 
+//---- Unless IMGUI_DISABLE_DEFAULT_FORMAT_FUNCTIONS is defined, use the much faster STB sprintf library implementation of vsnprintf instead of the one from the default C library.
+// Note that stb_sprintf.h is meant to be provided by the user and available in the include path at compile time. Also, the compatibility checks of the arguments and formats done by clang and GCC will be disabled in order to support the extra formats provided by STB sprintf.
+// #define IMGUI_USE_STB_SPRINTF
+
 //---- Define constructor and implicit cast operators to convert back<>forth between your math types and ImVec2/ImVec4.
 // This will be inlined as part of ImVec2 and ImVec4 class declarations.
 /*
@@ -64,9 +71,9 @@
         operator MyVec4() const { return MyVec4(x,y,z,w); }
 */
 
-//---- Using 32-bits vertex indices (default is 16-bits) is one way to allow large meshes with more than 64K vertices.
-// Your renderer back-end will need to support it (most example renderer back-ends support both 16/32-bits indices).
-// Another way to allow large meshes while keeping 16-bits indices is to handle ImDrawCmd::VtxOffset in your renderer.
+//---- Use 32-bit vertex indices (default is 16-bit) is one way to allow large meshes with more than 64K vertices.
+// Your renderer back-end will need to support it (most example renderer back-ends support both 16/32-bit indices).
+// Another way to allow large meshes while keeping 16-bit indices is to handle ImDrawCmd::VtxOffset in your renderer.
 // Read about ImGuiBackendFlags_RendererHasVtxOffset for details.
 //#define ImDrawIdx unsigned int
 
@@ -76,14 +83,19 @@
 //typedef void (*MyImDrawCallback)(const ImDrawList* draw_list, const ImDrawCmd* cmd, void* my_renderer_user_data);
 //#define ImDrawCallback MyImDrawCallback
 
-//---- Debug Tools
-// Use 'Metrics->Tools->Item Picker' to pick widgets with the mouse and break into them for easy debugging.
+//---- Debug Tools: Macro to break in Debugger
+// (use 'Metrics->Tools->Item Picker' to pick widgets with the mouse and break into them for easy debugging.)
 //#define IM_DEBUG_BREAK  IM_ASSERT(0)
 //#define IM_DEBUG_BREAK  __debugbreak()
-// Have the Item Picker break in the ItemAdd() function instead of ItemHoverable() - which is earlier in the code, will catch a few extra items, allow picking items other than Hovered one.
+
+//---- Debug Tools: Have the Item Picker break in the ItemAdd() function instead of ItemHoverable(),
+// (which comes earlier in the code, will catch a few extra items, allow picking items other than Hovered one.)
 // This adds a small runtime cost which is why it is not enabled by default.
 //#define IMGUI_DEBUG_TOOL_ITEM_PICKER_EX
 
+//---- Debug Tools: Enable slower asserts
+//#define IMGUI_DEBUG_PARANOID
+
 //---- Tip: You can add extra functions within the ImGui:: namespace, here or in your own headers files.
 /*
 namespace ImGui

imgui.h

@@ -1,10 +1,20 @@
-// dear imgui, v1.73
+// dear imgui, v1.75
 // (headers)
 
-// See imgui.cpp file for documentation.
-// Call and read ImGui::ShowDemoWindow() in imgui_demo.cpp for demo code.
-// Newcomers, read 'Programmer guide' in imgui.cpp for notes on how to setup Dear ImGui in your codebase.
-// Get latest version at https://github.com/ocornut/imgui
+// Help:
+// - Read FAQ at http://dearimgui.org/faq
+// - Newcomers, read 'Programmer guide' in imgui.cpp for notes on how to setup Dear ImGui in your codebase.
+// - Call and read ImGui::ShowDemoWindow() in imgui_demo.cpp for demo code. All applications in examples/ are doing that.
+// Read imgui.cpp for more details, documentation and comments.
+
+// Resources:
+// - FAQ                   http://dearimgui.org/faq
+// - Homepage & latest     https://github.com/ocornut/imgui
+// - Releases & changelog  https://github.com/ocornut/imgui/releases
+// - Gallery               https://github.com/ocornut/imgui/issues/2847 (please post your screenshots/video there!)
+// - Glossary              https://github.com/ocornut/imgui/wiki/Glossary
+// - Wiki                  https://github.com/ocornut/imgui/wiki
+// - Issues & support      https://github.com/ocornut/imgui/issues
 
 /*
 
@@ -27,7 +37,7 @@ Index of this file:
 
 #pragma once
 
-// Configuration file with compile-time options (edit imconfig.h or define IMGUI_USER_CONFIG to your own filename)
+// Configuration file with compile-time options (edit imconfig.h or #define IMGUI_USER_CONFIG to your own filename)
 #ifdef IMGUI_USER_CONFIG
 #include IMGUI_USER_CONFIG
 #endif
@@ -35,19 +45,22 @@ Index of this file:
 #include "imconfig.h"
 #endif
 
+#ifndef IMGUI_DISABLE
+
 //-----------------------------------------------------------------------------
 // Header mess
 //-----------------------------------------------------------------------------
 
-#include <float.h>                  // FLT_MAX
-#include <stdarg.h>                 // va_list
+// Includes
+#include <float.h>                  // FLT_MIN, FLT_MAX
+#include <stdarg.h>                 // va_list, va_start, va_end
 #include <stddef.h>                 // ptrdiff_t, NULL
 #include <string.h>                 // memset, memmove, memcpy, strlen, strchr, strcpy, strcmp
 
 // Version
 // (Integer encoded as XYYZZ for use in #if preprocessor conditionals. Work in progress versions typically starts at XYY99 then bounce up to XYY00, XYY01 etc. when release tagging happens)
-#define IMGUI_VERSION               "1.73"
-#define IMGUI_VERSION_NUM           17300
+#define IMGUI_VERSION               "1.75"
+#define IMGUI_VERSION_NUM           17500
 #define IMGUI_CHECKVERSION()        ImGui::DebugCheckVersionAndDataLayout(IMGUI_VERSION, sizeof(ImGuiIO), sizeof(ImGuiStyle), sizeof(ImVec2), sizeof(ImVec4), sizeof(ImDrawVert), sizeof(ImDrawIdx))
 
 // Define attributes of all API symbols declarations (e.g. for DLL under Windows)
@@ -65,20 +78,22 @@ Index of this file:
 #include <assert.h>
 #define IM_ASSERT(_EXPR)            assert(_EXPR)                               // You can override the default assert handler by editing imconfig.h
 #endif
-#if defined(__clang__) || defined(__GNUC__)
-#define IM_FMTARGS(FMT)             __attribute__((format(printf, FMT, FMT+1))) // Apply printf-style warnings to user functions.
+#if !defined(IMGUI_USE_STB_SPRINTF) && (defined(__clang__) || defined(__GNUC__))
+#define IM_FMTARGS(FMT)             __attribute__((format(printf, FMT, FMT+1))) // To apply printf-style warnings to our functions.
 #define IM_FMTLIST(FMT)             __attribute__((format(printf, FMT, 0)))
 #else
 #define IM_FMTARGS(FMT)
 #define IM_FMTLIST(FMT)
 #endif
-#define IM_ARRAYSIZE(_ARR)          ((int)(sizeof(_ARR)/sizeof(*_ARR)))         // Size of a static C-style array. Don't use on pointers!
+#define IM_ARRAYSIZE(_ARR)          ((int)(sizeof(_ARR) / sizeof(*_ARR)))       // Size of a static C-style array. Don't use on pointers!
 #define IM_UNUSED(_VAR)             ((void)_VAR)                                // Used to silence "unused variable warnings". Often useful as asserts may be stripped out from final builds.
 #if (__cplusplus >= 201100)
 #define IM_OFFSETOF(_TYPE,_MEMBER)  offsetof(_TYPE, _MEMBER)                    // Offset of _MEMBER within _TYPE. Standardized as offsetof() in C++11
 #else
 #define IM_OFFSETOF(_TYPE,_MEMBER)  ((size_t)&(((_TYPE*)0)->_MEMBER))           // Offset of _MEMBER within _TYPE. Old style macro.
 #endif
+#define IM_UNICODE_CODEPOINT_MAX     0xFFFF                                     // Last Unicode code point supported by this build.
+#define IM_UNICODE_CODEPOINT_INVALID 0xFFFD                                     // Standard invalid Unicode code point.
 
 // Warnings
 #if defined(__clang__)
@@ -123,7 +138,7 @@ struct ImGuiTextBuffer;             // Helper to hold and append into a text buf
 struct ImGuiTextFilter;             // Helper to parse and apply text filters (e.g. "aaaaa[,bbbb][,ccccc]")
 
 // Typedefs and Enums/Flags (declared as int for compatibility with old C++, to allow using as flags and to not pollute the top of this file)
-// Use your programming IDE "Go to definition" facility on the names of the center columns to find the actual flags/enum lists.
+// Use your programming IDE "Go to definition" facility on the names in the central column below to find the actual flags/enum lists.
 #ifndef ImTextureID
 typedef void* ImTextureID;          // User data to identify a texture (this is whatever to you want it to be! read the FAQ about ImTextureID in imgui.cpp)
 #endif
@@ -135,6 +150,7 @@ typedef int ImGuiDataType;          // -> enum ImGuiDataType_        // Enum: A
 typedef int ImGuiDir;               // -> enum ImGuiDir_             // Enum: A cardinal direction
 typedef int ImGuiKey;               // -> enum ImGuiKey_             // Enum: A key identifier (ImGui-side enum)
 typedef int ImGuiNavInput;          // -> enum ImGuiNavInput_        // Enum: An input identifier for navigation
+typedef int ImGuiMouseButton;       // -> enum ImGuiMouseButton_     // Enum: A mouse button identifier (0=left, 1=right, 2=middle)
 typedef int ImGuiMouseCursor;       // -> enum ImGuiMouseCursor_     // Enum: A mouse cursor identifier
 typedef int ImGuiStyleVar;          // -> enum ImGuiStyleVar_        // Enum: A variable identifier for styling
 typedef int ImDrawCornerFlags;      // -> enum ImDrawCornerFlags_    // Flags: for ImDrawList::AddRect(), AddRectFilled() etc.
@@ -157,7 +173,7 @@ typedef int (*ImGuiInputTextCallback)(ImGuiInputTextCallbackData *data);
 typedef void (*ImGuiSizeCallback)(ImGuiSizeCallbackData* data);
 
 // Scalar data types
-typedef signed char         ImS8;   // 8-bit signed integer == char
+typedef signed char         ImS8;   // 8-bit signed integer
 typedef unsigned char       ImU8;   // 8-bit unsigned integer
 typedef signed short        ImS16;  // 16-bit signed integer
 typedef unsigned short      ImU16;  // 16-bit unsigned integer
@@ -201,14 +217,14 @@ struct ImVec4
 
 //-----------------------------------------------------------------------------
 // ImGui: Dear ImGui end-user API
-// (Inside a namespace so you can add extra functions in your own separate file. Please don't modify imgui.cpp/.h!)
+// (Inside a namespace so you can add extra functions in your own separate file. Please don't modify imgui source files!)
 //-----------------------------------------------------------------------------
 
 namespace ImGui
 {
     // Context creation and access
     // Each context create its own ImFontAtlas by default. You may instance one yourself and pass it to CreateContext() to share a font atlas between imgui contexts.
-    // All those functions are not reliant on the current context.
+    // None of those functions is reliant on the current context.
     IMGUI_API ImGuiContext* CreateContext(ImFontAtlas* shared_font_atlas = NULL);
     IMGUI_API void          DestroyContext(ImGuiContext* ctx = NULL);   // NULL = destroy current context
     IMGUI_API ImGuiContext* GetCurrentContext();
@@ -245,8 +261,9 @@ namespace ImGui
     //   which clicking will set the boolean to false when clicked.
     // - Begin() return false to indicate the window is collapsed or fully clipped, so you may early out and omit submitting
     //   anything to the window. Always call a matching End() for each Begin() call, regardless of its return value!
-    //   [this is due to legacy reason and is inconsistent with most other functions such as BeginMenu/EndMenu, BeginPopup/EndPopup, etc.
-    //    where the EndXXX call should only be called if the corresponding BeginXXX function returned true.]
+    //   [Important: due to legacy reason, this is inconsistent with most other functions such as BeginMenu/EndMenu,
+    //    BeginPopup/EndPopup, etc. where the EndXXX call should only be called if the corresponding BeginXXX function
+    //    returned true. Begin and BeginChild are the only odd ones out. Will be fixed in a future update.]
     // - Note that the bottom of window stack always contains a window called "Debug".
     IMGUI_API bool          Begin(const char* name, bool* p_open = NULL, ImGuiWindowFlags flags = 0);
     IMGUI_API void          End();
@@ -255,13 +272,13 @@ namespace ImGui
     // - Use child windows to begin into a self-contained independent scrolling/clipping regions within a host window. Child windows can embed their own child.
     // - For each independent axis of 'size': ==0.0f: use remaining host window size / >0.0f: fixed size / <0.0f: use remaining window size minus abs(size) / Each axis can use a different mode, e.g. ImVec2(0,400).
     // - BeginChild() returns false to indicate the window is collapsed or fully clipped, so you may early out and omit submitting anything to the window.
-    //   Always call a matching EndChild() for each BeginChild() call, regardless of its return value [this is due to legacy reason and is inconsistent with most other functions such as BeginMenu/EndMenu, BeginPopup/EndPopup, etc. where the EndXXX call should only be called if the corresponding BeginXXX function returned true.]
+    //   Always call a matching EndChild() for each BeginChild() call, regardless of its return value [as with Begin: this is due to legacy reason and inconsistent with most BeginXXX functions apart from the regular Begin() which behaves like BeginChild().]
     IMGUI_API bool          BeginChild(const char* str_id, const ImVec2& size = ImVec2(0,0), bool border = false, ImGuiWindowFlags flags = 0);
     IMGUI_API bool          BeginChild(ImGuiID id, const ImVec2& size = ImVec2(0,0), bool border = false, ImGuiWindowFlags flags = 0);
     IMGUI_API void          EndChild();
 
     // Windows Utilities
-    // - "current window" = the window we are appending into while inside a Begin()/End() block. "next window" = next window we will Begin() into.
+    // - 'current window' = the window we are appending into while inside a Begin()/End() block. 'next window' = next window we will Begin() into.
     IMGUI_API bool          IsWindowAppearing();
     IMGUI_API bool          IsWindowCollapsed();
     IMGUI_API bool          IsWindowFocused(ImGuiFocusedFlags flags=0); // is current window focused? or its root/child, depending on flags. see flags for options.
@@ -279,7 +296,7 @@ namespace ImGui
     IMGUI_API void          SetNextWindowContentSize(const ImVec2& size);                               // set next window content size (~ scrollable client area, which enforce the range of scrollbars). Not including window decorations (title bar, menu bar, etc.) nor WindowPadding. set an axis to 0.0f to leave it automatic. call before Begin()
     IMGUI_API void          SetNextWindowCollapsed(bool collapsed, ImGuiCond cond = 0);                 // set next window collapsed state. call before Begin()
     IMGUI_API void          SetNextWindowFocus();                                                       // set next window to be focused / top-most. call before Begin()
-    IMGUI_API void          SetNextWindowBgAlpha(float alpha);                                          // set next window background color alpha. helper to easily modify ImGuiCol_WindowBg/ChildBg/PopupBg. you may also use ImGuiWindowFlags_NoBackground.
+    IMGUI_API void          SetNextWindowBgAlpha(float alpha);                                          // set next window background color alpha. helper to easily override the Alpha component of ImGuiCol_WindowBg/ChildBg/PopupBg. you may also use ImGuiWindowFlags_NoBackground.
     IMGUI_API void          SetWindowPos(const ImVec2& pos, ImGuiCond cond = 0);                        // (not recommended) set current window position - call within Begin()/End(). prefer using SetNextWindowPos(), as this may incur tearing and side-effects.
     IMGUI_API void          SetWindowSize(const ImVec2& size, ImGuiCond cond = 0);                      // (not recommended) set current window size - call within Begin()/End(). set to ImVec2(0,0) to force an auto-fit. prefer using SetNextWindowSize(), as this may incur tearing and minor side-effects.
     IMGUI_API void          SetWindowCollapsed(bool collapsed, ImGuiCond cond = 0);                     // (not recommended) set current window collapsed state. prefer using SetNextWindowCollapsed().
@@ -342,6 +359,7 @@ namespace ImGui
     // Cursor / Layout
     // - By "cursor" we mean the current output position.
     // - The typical widget behavior is to output themselves at the current cursor position, then move the cursor one line down.
+    // - You can call SameLine() between widgets to undo the last carriage return and output at the right of the preceeding widget.
     IMGUI_API void          Separator();                                                    // separator, generally horizontal. inside a menu bar or in horizontal layout mode, this becomes a vertical separator.
     IMGUI_API void          SameLine(float offset_from_start_x=0.0f, float spacing=-1.0f);  // call between widgets or groups to layout them horizontally. X position given in window coordinates.
     IMGUI_API void          NewLine();                                                      // undo a SameLine() or force a new line when in an horizontal-layout context.
@@ -383,8 +401,8 @@ namespace ImGui
     IMGUI_API ImGuiID       GetID(const void* ptr_id);
 
     // Widgets: Text
-    IMGUI_API void          TextUnformatted(const char* text, const char* text_end = NULL);                // raw text without formatting. Roughly equivalent to Text("%s", text) but: A) doesn't require null terminated string if 'text_end' is specified, B) it's faster, no memory copy is done, no buffer size limits, recommended for long chunks of text.
-    IMGUI_API void          Text(const char* fmt, ...)                                      IM_FMTARGS(1); // simple formatted text
+    IMGUI_API void          TextUnformatted(const char* text, const char* text_end = NULL); // raw text without formatting. Roughly equivalent to Text("%s", text) but: A) doesn't require null terminated string if 'text_end' is specified, B) it's faster, no memory copy is done, no buffer size limits, recommended for long chunks of text.
+    IMGUI_API void          Text(const char* fmt, ...)                                      IM_FMTARGS(1); // formatted text
     IMGUI_API void          TextV(const char* fmt, va_list args)                            IM_FMTLIST(1);
     IMGUI_API void          TextColored(const ImVec4& col, const char* fmt, ...)            IM_FMTARGS(2); // shortcut for PushStyleColor(ImGuiCol_Text, col); Text(fmt, ...); PopStyleColor();
     IMGUI_API void          TextColoredV(const ImVec4& col, const char* fmt, va_list args)  IM_FMTLIST(2);
@@ -399,6 +417,7 @@ namespace ImGui
 
     // Widgets: Main
     // - Most widgets return true when the value has been changed or when pressed/selected
+    // - You may also use one of the many IsItemXXX functions (e.g. IsItemActive, IsItemHovered, etc.) to query widget state.
     IMGUI_API bool          Button(const char* label, const ImVec2& size = ImVec2(0,0));    // button
     IMGUI_API bool          SmallButton(const char* label);                                 // button with FramePadding=(0,0) to easily embed within text
     IMGUI_API bool          InvisibleButton(const char* str_id, const ImVec2& size);        // button behavior without the visuals, frequently useful to build custom behaviors using the public api (along with IsItemActive, IsItemHovered, etc.)
@@ -413,7 +432,7 @@ namespace ImGui
     IMGUI_API void          Bullet();                                                       // draw a small circle and keep the cursor on the same line. advance cursor x position by GetTreeNodeToLabelSpacing(), same distance that TreeNode() uses
 
     // Widgets: Combo Box
-    // - The new BeginCombo()/EndCombo() api allows you to manage your contents and selection state however you want it, by creating e.g. Selectable() items.
+    // - The BeginCombo()/EndCombo() api allows you to manage your contents and selection state however you want it, by creating e.g. Selectable() items.
     // - The old Combo() api are helpers over BeginCombo()/EndCombo() which are kept available for convenience purpose.
     IMGUI_API bool          BeginCombo(const char* label, const char* preview_value, ImGuiComboFlags flags = 0);
     IMGUI_API void          EndCombo(); // only call EndCombo() if BeginCombo() returns true!
@@ -427,6 +446,7 @@ namespace ImGui
     // - Adjust format string to decorate the value with a prefix, a suffix, or adapt the editing and display precision e.g. "%.3f" -> 1.234; "%5.2f secs" -> 01.23 secs; "Biscuit: %.0f" -> Biscuit: 1; etc.
     // - Speed are per-pixel of mouse movement (v_speed=0.2f: mouse needs to move by 5 pixels to increase value by 1). For gamepad/keyboard navigation, minimum speed is Max(v_speed, minimum_step_at_given_precision).
     // - Use v_min < v_max to clamp edits to given limits. Note that CTRL+Click manual input can override those limits.
+    // - Use v_max = FLT_MAX / INT_MAX etc to avoid clamping to a maximum, same with v_min = -FLT_MAX / INT_MIN to avoid clamping to a minimum.
     // - Use v_min > v_max to lock edits.
     IMGUI_API bool          DragFloat(const char* label, float* v, float v_speed = 1.0f, float v_min = 0.0f, float v_max = 0.0f, const char* format = "%.3f", float power = 1.0f);     // If v_min >= v_max we have no bound
     IMGUI_API bool          DragFloat2(const char* label, float v[2], float v_speed = 1.0f, float v_min = 0.0f, float v_max = 0.0f, const char* format = "%.3f", float power = 1.0f);
@@ -438,8 +458,8 @@ namespace ImGui
     IMGUI_API bool          DragInt3(const char* label, int v[3], float v_speed = 1.0f, int v_min = 0, int v_max = 0, const char* format = "%d");
     IMGUI_API bool          DragInt4(const char* label, int v[4], float v_speed = 1.0f, int v_min = 0, int v_max = 0, const char* format = "%d");
     IMGUI_API bool          DragIntRange2(const char* label, int* v_current_min, int* v_current_max, float v_speed = 1.0f, int v_min = 0, int v_max = 0, const char* format = "%d", const char* format_max = NULL);
-    IMGUI_API bool          DragScalar(const char* label, ImGuiDataType data_type, void* v, float v_speed, const void* v_min = NULL, const void* v_max = NULL, const char* format = NULL, float power = 1.0f);
-    IMGUI_API bool          DragScalarN(const char* label, ImGuiDataType data_type, void* v, int components, float v_speed, const void* v_min = NULL, const void* v_max = NULL, const char* format = NULL, float power = 1.0f);
+    IMGUI_API bool          DragScalar(const char* label, ImGuiDataType data_type, void* p_data, float v_speed, const void* p_min = NULL, const void* p_max = NULL, const char* format = NULL, float power = 1.0f);
+    IMGUI_API bool          DragScalarN(const char* label, ImGuiDataType data_type, void* p_data, int components, float v_speed, const void* p_min = NULL, const void* p_max = NULL, const char* format = NULL, float power = 1.0f);
 
     // Widgets: Sliders
     // - CTRL+Click on any slider to turn them into an input box. Manually input values aren't clamped and can go off-bounds.
@@ -453,14 +473,14 @@ namespace ImGui
     IMGUI_API bool          SliderInt2(const char* label, int v[2], int v_min, int v_max, const char* format = "%d");
     IMGUI_API bool          SliderInt3(const char* label, int v[3], int v_min, int v_max, const char* format = "%d");
     IMGUI_API bool          SliderInt4(const char* label, int v[4], int v_min, int v_max, const char* format = "%d");
-    IMGUI_API bool          SliderScalar(const char* label, ImGuiDataType data_type, void* v, const void* v_min, const void* v_max, const char* format = NULL, float power = 1.0f);
-    IMGUI_API bool          SliderScalarN(const char* label, ImGuiDataType data_type, void* v, int components, const void* v_min, const void* v_max, const char* format = NULL, float power = 1.0f);
+    IMGUI_API bool          SliderScalar(const char* label, ImGuiDataType data_type, void* p_data, const void* p_min, const void* p_max, const char* format = NULL, float power = 1.0f);
+    IMGUI_API bool          SliderScalarN(const char* label, ImGuiDataType data_type, void* p_data, int components, const void* p_min, const void* p_max, const char* format = NULL, float power = 1.0f);
     IMGUI_API bool          VSliderFloat(const char* label, const ImVec2& size, float* v, float v_min, float v_max, const char* format = "%.3f", float power = 1.0f);
     IMGUI_API bool          VSliderInt(const char* label, const ImVec2& size, int* v, int v_min, int v_max, const char* format = "%d");
-    IMGUI_API bool          VSliderScalar(const char* label, const ImVec2& size, ImGuiDataType data_type, void* v, const void* v_min, const void* v_max, const char* format = NULL, float power = 1.0f);
+    IMGUI_API bool          VSliderScalar(const char* label, const ImVec2& size, ImGuiDataType data_type, void* p_data, const void* p_min, const void* p_max, const char* format = NULL, float power = 1.0f);
 
     // Widgets: Input with Keyboard
-    // - If you want to use InputText() with a dynamic string type such as std::string or your own, see misc/cpp/imgui_stdlib.h
+    // - If you want to use InputText() with std::string or any custom dynamic string type, see misc/cpp/imgui_stdlib.h and comments in imgui_demo.cpp.
     // - Most of the ImGuiInputTextFlags flags are only useful for InputText() and not for InputFloatX, InputIntX, InputDouble etc.
     IMGUI_API bool          InputText(const char* label, char* buf, size_t buf_size, ImGuiInputTextFlags flags = 0, ImGuiInputTextCallback callback = NULL, void* user_data = NULL);
     IMGUI_API bool          InputTextMultiline(const char* label, char* buf, size_t buf_size, const ImVec2& size = ImVec2(0,0), ImGuiInputTextFlags flags = 0, ImGuiInputTextCallback callback = NULL, void* user_data = NULL);
@@ -474,8 +494,8 @@ namespace ImGui
     IMGUI_API bool          InputInt3(const char* label, int v[3], ImGuiInputTextFlags flags = 0);
     IMGUI_API bool          InputInt4(const char* label, int v[4], ImGuiInputTextFlags flags = 0);
     IMGUI_API bool          InputDouble(const char* label, double* v, double step = 0.0, double step_fast = 0.0, const char* format = "%.6f", ImGuiInputTextFlags flags = 0);
-    IMGUI_API bool          InputScalar(const char* label, ImGuiDataType data_type, void* v, const void* step = NULL, const void* step_fast = NULL, const char* format = NULL, ImGuiInputTextFlags flags = 0);
-    IMGUI_API bool          InputScalarN(const char* label, ImGuiDataType data_type, void* v, int components, const void* step = NULL, const void* step_fast = NULL, const char* format = NULL, ImGuiInputTextFlags flags = 0);
+    IMGUI_API bool          InputScalar(const char* label, ImGuiDataType data_type, void* p_data, const void* p_step = NULL, const void* p_step_fast = NULL, const char* format = NULL, ImGuiInputTextFlags flags = 0);
+    IMGUI_API bool          InputScalarN(const char* label, ImGuiDataType data_type, void* p_data, int components, const void* p_step = NULL, const void* p_step_fast = NULL, const char* format = NULL, ImGuiInputTextFlags flags = 0);
 
     // Widgets: Color Editor/Picker (tip: the ColorEdit* functions have a little colored preview square that can be left-clicked to open a picker, and right-clicked to open an option menu.)
     // - Note that in C++ a 'float v[X]' function argument is the _same_ as 'float* v', the array syntax is just a way to document the number of elements that are expected to be accessible.
@@ -509,7 +529,7 @@ namespace ImGui
 
     // Widgets: Selectables
     // - A selectable highlights when hovered, and can display another color when selected.
-    // - Neighbors selectable extend their highlight bounds in order to leave no gap between them.
+    // - Neighbors selectable extend their highlight bounds in order to leave no gap between them. This is so a series of selected Selectable appear contiguous.
     IMGUI_API bool          Selectable(const char* label, bool selected = false, ImGuiSelectableFlags flags = 0, const ImVec2& size = ImVec2(0,0));  // "bool selected" carry the selection state (read-only). Selectable() is clicked is returns true so you can modify your selection state. size.x==0.0: use remaining width, size.x>0.0: specify width. size.y==0.0: use label height, size.y>0.0: specify height
     IMGUI_API bool          Selectable(const char* label, bool* p_selected, ImGuiSelectableFlags flags = 0, const ImVec2& size = ImVec2(0,0));       // "bool* p_selected" point to the selection state (read-write), as a convenient helper.
 
@@ -535,16 +555,19 @@ namespace ImGui
     IMGUI_API void          Value(const char* prefix, float v, const char* float_format = NULL);
 
     // Widgets: Menus
-    IMGUI_API bool          BeginMainMenuBar();                                                 // create and append to a full screen menu-bar.
-    IMGUI_API void          EndMainMenuBar();                                                   // only call EndMainMenuBar() if BeginMainMenuBar() returns true!
+    // - Use BeginMenuBar() on a window ImGuiWindowFlags_MenuBar to append to its menu bar.
+    // - Use BeginMainMenuBar() to create a menu bar at the top of the screen.
     IMGUI_API bool          BeginMenuBar();                                                     // append to menu-bar of current window (requires ImGuiWindowFlags_MenuBar flag set on parent window).
     IMGUI_API void          EndMenuBar();                                                       // only call EndMenuBar() if BeginMenuBar() returns true!
+    IMGUI_API bool          BeginMainMenuBar();                                                 // create and append to a full screen menu-bar.
+    IMGUI_API void          EndMainMenuBar();                                                   // only call EndMainMenuBar() if BeginMainMenuBar() returns true!
     IMGUI_API bool          BeginMenu(const char* label, bool enabled = true);                  // create a sub-menu entry. only call EndMenu() if this returns true!
     IMGUI_API void          EndMenu();                                                          // only call EndMenu() if BeginMenu() returns true!
     IMGUI_API bool          MenuItem(const char* label, const char* shortcut = NULL, bool selected = false, bool enabled = true);  // return true when activated. shortcuts are displayed for convenience but not processed by ImGui at the moment
     IMGUI_API bool          MenuItem(const char* label, const char* shortcut, bool* p_selected, bool enabled = true);              // return true when activated + toggle (*p_selected) if p_selected != NULL
 
     // Tooltips
+    // - Tooltip are windows following the mouse which do not take focus away.
     IMGUI_API void          BeginTooltip();                                                     // begin/append a tooltip window. to create full-featured tooltip (with any kind of items).
     IMGUI_API void          EndTooltip();
     IMGUI_API void          SetTooltip(const char* fmt, ...) IM_FMTARGS(1);                     // set a text-only tooltip, typically use with ImGui::IsItemHovered(). override any previous call to SetTooltip().
@@ -556,22 +579,25 @@ namespace ImGui
     // - Unless modal, they can be closed by clicking anywhere outside them, or by pressing ESCAPE.
     // - Their visibility state (~bool) is held internally by imgui instead of being held by the programmer as we are used to with regular Begin() calls.
     //   User can manipulate the visibility state by calling OpenPopup().
-    // (*) One can use IsItemHovered(ImGuiHoveredFlags_AllowWhenBlockedByPopup) to bypass it and detect hovering even when normally blocked by a popup.
+    // - We default to use the right mouse (ImGuiMouseButton_Right=1) for the Popup Context functions.
+    // (*) You can use IsItemHovered(ImGuiHoveredFlags_AllowWhenBlockedByPopup) to bypass it and detect hovering even when normally blocked by a popup.
     // Those three properties are connected. The library needs to hold their visibility state because it can close popups at any time.
     IMGUI_API void          OpenPopup(const char* str_id);                                      // call to mark popup as open (don't call every frame!). popups are closed when user click outside, or if CloseCurrentPopup() is called within a BeginPopup()/EndPopup() block. By default, Selectable()/MenuItem() are calling CloseCurrentPopup(). Popup identifiers are relative to the current ID-stack (so OpenPopup and BeginPopup needs to be at the same level).
     IMGUI_API bool          BeginPopup(const char* str_id, ImGuiWindowFlags flags = 0);                                             // return true if the popup is open, and you can start outputting to it. only call EndPopup() if BeginPopup() returns true!
-    IMGUI_API bool          BeginPopupContextItem(const char* str_id = NULL, int mouse_button = 1);                                 // helper to open and begin popup when clicked on last item. if you can pass a NULL str_id only if the previous item had an id. If you want to use that on a non-interactive item such as Text() you need to pass in an explicit ID here. read comments in .cpp!
-    IMGUI_API bool          BeginPopupContextWindow(const char* str_id = NULL, int mouse_button = 1, bool also_over_items = true);  // helper to open and begin popup when clicked on current window.
-    IMGUI_API bool          BeginPopupContextVoid(const char* str_id = NULL, int mouse_button = 1);                                 // helper to open and begin popup when clicked in void (where there are no imgui windows).
+    IMGUI_API bool          BeginPopupContextItem(const char* str_id = NULL, ImGuiMouseButton mouse_button = 1);                    // helper to open and begin popup when clicked on last item. if you can pass a NULL str_id only if the previous item had an id. If you want to use that on a non-interactive item such as Text() you need to pass in an explicit ID here. read comments in .cpp!
+    IMGUI_API bool          BeginPopupContextWindow(const char* str_id = NULL, ImGuiMouseButton mouse_button = 1, bool also_over_items = true);  // helper to open and begin popup when clicked on current window.
+    IMGUI_API bool          BeginPopupContextVoid(const char* str_id = NULL, ImGuiMouseButton mouse_button = 1);                    // helper to open and begin popup when clicked in void (where there are no imgui windows).
     IMGUI_API bool          BeginPopupModal(const char* name, bool* p_open = NULL, ImGuiWindowFlags flags = 0);                     // modal dialog (regular window with title bar, block interactions behind the modal window, can't close the modal window by clicking outside)
     IMGUI_API void          EndPopup();                                                                                             // only call EndPopup() if BeginPopupXXX() returns true!
-    IMGUI_API bool          OpenPopupOnItemClick(const char* str_id = NULL, int mouse_button = 1);                                  // helper to open popup when clicked on last item (note: actually triggers on the mouse _released_ event to be consistent with popup behaviors). return true when just opened.
+    IMGUI_API bool          OpenPopupOnItemClick(const char* str_id = NULL, ImGuiMouseButton mouse_button = 1);                     // helper to open popup when clicked on last item (note: actually triggers on the mouse _released_ event to be consistent with popup behaviors). return true when just opened.
     IMGUI_API bool          IsPopupOpen(const char* str_id);                                    // return true if the popup is open at the current begin-ed level of the popup stack.
     IMGUI_API void          CloseCurrentPopup();                                                // close the popup we have begin-ed into. clicking on a MenuItem or Selectable automatically close the current popup.
 
     // Columns
     // - You can also use SameLine(pos_x) to mimic simplified columns.
     // - The columns API is work-in-progress and rather lacking (columns are arguably the worst part of dear imgui at the moment!)
+    // - There is a maximum of 64 columns.
+    // - Currently working on new 'Tables' api which will replace columns (see GitHub #2957)
     IMGUI_API void          Columns(int count = 1, const char* id = NULL, bool border = true);
     IMGUI_API void          NextColumn();                                                       // next column, defaults to current row or next row if the current row is finished
     IMGUI_API int           GetColumnIndex();                                                   // get current column index
@@ -582,7 +608,6 @@ namespace ImGui
     IMGUI_API int           GetColumnsCount();
 
     // Tab Bars, Tabs
-    // [BETA API] API may evolve!
     IMGUI_API bool          BeginTabBar(const char* str_id, ImGuiTabBarFlags flags = 0);        // create and append into a TabBar
     IMGUI_API void          EndTabBar();                                                        // only call EndTabBar() if BeginTabBar() returns true!
     IMGUI_API bool          BeginTabItem(const char* label, bool* p_open = NULL, ImGuiTabItemFlags flags = 0);// create a Tab. Returns true if the Tab is selected.
@@ -623,12 +648,13 @@ namespace ImGui
     IMGUI_API bool          IsItemHovered(ImGuiHoveredFlags flags = 0);                         // is the last item hovered? (and usable, aka not blocked by a popup, etc.). See ImGuiHoveredFlags for more options.
     IMGUI_API bool          IsItemActive();                                                     // is the last item active? (e.g. button being held, text field being edited. This will continuously return true while holding mouse button on an item. Items that don't interact will always return false)
     IMGUI_API bool          IsItemFocused();                                                    // is the last item focused for keyboard/gamepad navigation?
-    IMGUI_API bool          IsItemClicked(int mouse_button = 0);                                // is the last item clicked? (e.g. button/node just clicked on) == IsMouseClicked(mouse_button) && IsItemHovered()
+    IMGUI_API bool          IsItemClicked(ImGuiMouseButton mouse_button = 0);                   // is the last item clicked? (e.g. button/node just clicked on) == IsMouseClicked(mouse_button) && IsItemHovered()
     IMGUI_API bool          IsItemVisible();                                                    // is the last item visible? (items may be out of sight because of clipping/scrolling)
     IMGUI_API bool          IsItemEdited();                                                     // did the last item modify its underlying value this frame? or was pressed? This is generally the same as the "bool" return value of many widgets.
     IMGUI_API bool          IsItemActivated();                                                  // was the last item just made active (item was previously inactive).
     IMGUI_API bool          IsItemDeactivated();                                                // was the last item just made inactive (item was previously active). Useful for Undo/Redo patterns with widgets that requires continuous editing.
     IMGUI_API bool          IsItemDeactivatedAfterEdit();                                       // was the last item just made inactive and made a value change when it was active? (e.g. Slider/Drag moved). Useful for Undo/Redo patterns with widgets that requires continuous editing. Note that you may get false positives (some widgets such as Combo()/ListBox()/Selectable() will return true even when clicking an already selected item).
+    IMGUI_API bool          IsItemToggledOpen();                                                // was the last item open state toggled? set by TreeNode().
     IMGUI_API bool          IsAnyItemHovered();                                                 // is any item hovered?
     IMGUI_API bool          IsAnyItemActive();                                                  // is any item active?
     IMGUI_API bool          IsAnyItemFocused();                                                 // is any item focused?
@@ -659,27 +685,34 @@ namespace ImGui
     IMGUI_API void          ColorConvertRGBtoHSV(float r, float g, float b, float& out_h, float& out_s, float& out_v);
     IMGUI_API void          ColorConvertHSVtoRGB(float h, float s, float v, float& out_r, float& out_g, float& out_b);
 
-    // Inputs Utilities
+    // Inputs Utilities: Keyboard
+    // - For 'int user_key_index' you can use your own indices/enums according to how your backend/engine stored them in io.KeysDown[].
+    // - We don't know the meaning of those value. You can use GetKeyIndex() to map a ImGuiKey_ value into the user index.
     IMGUI_API int           GetKeyIndex(ImGuiKey imgui_key);                                    // map ImGuiKey_* values into user's key index. == io.KeyMap[key]
-    IMGUI_API bool          IsKeyDown(int user_key_index);                                      // is key being held. == io.KeysDown[user_key_index]. note that imgui doesn't know the semantic of each entry of io.KeysDown[]. Use your own indices/enums according to how your backend/engine stored them into io.KeysDown[]!
-    IMGUI_API bool          IsKeyPressed(int user_key_index, bool repeat = true);               // was key pressed (went from !Down to Down). if repeat=true, uses io.KeyRepeatDelay / KeyRepeatRate
-    IMGUI_API bool          IsKeyReleased(int user_key_index);                                  // was key released (went from Down to !Down)..
+    IMGUI_API bool          IsKeyDown(int user_key_index);                                      // is key being held. == io.KeysDown[user_key_index].
+    IMGUI_API bool          IsKeyPressed(int user_key_index, bool repeat = true);               // was key pressed (went from !Down to Down)? if repeat=true, uses io.KeyRepeatDelay / KeyRepeatRate
+    IMGUI_API bool          IsKeyReleased(int user_key_index);                                  // was key released (went from Down to !Down)?
     IMGUI_API int           GetKeyPressedAmount(int key_index, float repeat_delay, float rate); // uses provided repeat rate/delay. return a count, most often 0 or 1 but might be >1 if RepeatRate is small enough that DeltaTime > RepeatRate
-    IMGUI_API bool          IsMouseDown(int button);                                            // is mouse button held (0=left, 1=right, 2=middle)
-    IMGUI_API bool          IsAnyMouseDown();                                                   // is any mouse button held
-    IMGUI_API bool          IsMouseClicked(int button, bool repeat = false);                    // did mouse button clicked (went from !Down to Down) (0=left, 1=right, 2=middle)
-    IMGUI_API bool          IsMouseDoubleClicked(int button);                                   // did mouse button double-clicked. a double-click returns false in IsMouseClicked(). uses io.MouseDoubleClickTime.
-    IMGUI_API bool          IsMouseReleased(int button);                                        // did mouse button released (went from Down to !Down)
-    IMGUI_API bool          IsMouseDragging(int button = 0, float lock_threshold = -1.0f);      // is mouse dragging. if lock_threshold < -1.0f uses io.MouseDraggingThreshold
-    IMGUI_API bool          IsMouseHoveringRect(const ImVec2& r_min, const ImVec2& r_max, bool clip = true);  // is mouse hovering given bounding rect (in screen space). clipped by current clipping settings, but disregarding of other consideration of focus/window ordering/popup-block.
-    IMGUI_API bool          IsMousePosValid(const ImVec2* mouse_pos = NULL);                    // by convention we use (-FLT_MAX,-FLT_MAX) to denote that there is no mouse
-    IMGUI_API ImVec2        GetMousePos();                                                      // shortcut to ImGui::GetIO().MousePos provided by user, to be consistent with other calls
-    IMGUI_API ImVec2        GetMousePosOnOpeningCurrentPopup();                                 // retrieve backup of mouse position at the time of opening popup we have BeginPopup() into
-    IMGUI_API ImVec2        GetMouseDragDelta(int button = 0, float lock_threshold = -1.0f);    // return the delta from the initial clicking position while the mouse button is pressed or was just released. This is locked and return 0.0f until the mouse moves past a distance threshold at least once. If lock_threshold < -1.0f uses io.MouseDraggingThreshold.
-    IMGUI_API void          ResetMouseDragDelta(int button = 0);                                //
-    IMGUI_API ImGuiMouseCursor GetMouseCursor();                                                // get desired cursor type, reset in ImGui::NewFrame(), this is updated during the frame. valid before Render(). If you use software rendering by setting io.MouseDrawCursor ImGui will render those for you
-    IMGUI_API void          SetMouseCursor(ImGuiMouseCursor type);                              // set desired cursor type
     IMGUI_API void          CaptureKeyboardFromApp(bool want_capture_keyboard_value = true);    // attention: misleading name! manually override io.WantCaptureKeyboard flag next frame (said flag is entirely left for your application to handle). e.g. force capture keyboard when your widget is being hovered. This is equivalent to setting "io.WantCaptureKeyboard = want_capture_keyboard_value"; after the next NewFrame() call.
+
+    // Inputs Utilities: Mouse
+    // - To refer to a mouse button, you may use named enums in your code e.g. ImGuiMouseButton_Left, ImGuiMouseButton_Right.
+    // - You can also use regular integer: it is forever guaranteed that 0=Left, 1=Right, 2=Middle.
+    // - Dragging operations are only reported after mouse has moved a certain distance away from the initial clicking position (see 'lock_threshold' and 'io.MouseDraggingThreshold')
+    IMGUI_API bool          IsMouseDown(ImGuiMouseButton button);                               // is mouse button held?
+    IMGUI_API bool          IsMouseClicked(ImGuiMouseButton button, bool repeat = false);       // did mouse button clicked? (went from !Down to Down)
+    IMGUI_API bool          IsMouseReleased(ImGuiMouseButton button);                           // did mouse button released? (went from Down to !Down)
+    IMGUI_API bool          IsMouseDoubleClicked(ImGuiMouseButton button);                      // did mouse button double-clicked? a double-click returns false in IsMouseClicked(). uses io.MouseDoubleClickTime.
+    IMGUI_API bool          IsMouseHoveringRect(const ImVec2& r_min, const ImVec2& r_max, bool clip = true);// is mouse hovering given bounding rect (in screen space). clipped by current clipping settings, but disregarding of other consideration of focus/window ordering/popup-block.
+    IMGUI_API bool          IsMousePosValid(const ImVec2* mouse_pos = NULL);                    // by convention we use (-FLT_MAX,-FLT_MAX) to denote that there is no mouse available
+    IMGUI_API bool          IsAnyMouseDown();                                                   // is any mouse button held?
+    IMGUI_API ImVec2        GetMousePos();                                                      // shortcut to ImGui::GetIO().MousePos provided by user, to be consistent with other calls
+    IMGUI_API ImVec2        GetMousePosOnOpeningCurrentPopup();                                 // retrieve mouse position at the time of opening popup we have BeginPopup() into (helper to avoid user backing that value themselves)
+    IMGUI_API bool          IsMouseDragging(ImGuiMouseButton button, float lock_threshold = -1.0f);         // is mouse dragging? (if lock_threshold < -1.0f, uses io.MouseDraggingThreshold)
+    IMGUI_API ImVec2        GetMouseDragDelta(ImGuiMouseButton button = 0, float lock_threshold = -1.0f);   // return the delta from the initial clicking position while the mouse button is pressed or was just released. This is locked and return 0.0f until the mouse moves past a distance threshold at least once (if lock_threshold < -1.0f, uses io.MouseDraggingThreshold)
+    IMGUI_API void          ResetMouseDragDelta(ImGuiMouseButton button = 0);                   //
+    IMGUI_API ImGuiMouseCursor GetMouseCursor();                                                // get desired cursor type, reset in ImGui::NewFrame(), this is updated during the frame. valid before Render(). If you use software rendering by setting io.MouseDrawCursor ImGui will render those for you
+    IMGUI_API void          SetMouseCursor(ImGuiMouseCursor cursor_type);                       // set desired cursor type
     IMGUI_API void          CaptureMouseFromApp(bool want_capture_mouse_value = true);          // attention: misleading name! manually override io.WantCaptureMouse flag next frame (said flag is entirely left for your application to handle). This is equivalent to setting "io.WantCaptureMouse = want_capture_mouse_value;" after the next NewFrame() call.
 
     // Clipboard Utilities (also see the LogToClipboard() function to capture or output text data to the clipboard)
@@ -744,8 +777,8 @@ enum ImGuiWindowFlags_
     ImGuiWindowFlags_ChildMenu              = 1 << 28   // Don't use! For internal use by BeginMenu()
 
     // [Obsolete]
-    //ImGuiWindowFlags_ShowBorders          = 1 << 7,   // --> Set style.FrameBorderSize=1.0f / style.WindowBorderSize=1.0f to enable borders around windows and items
-    //ImGuiWindowFlags_ResizeFromAnySide    = 1 << 17,  // --> Set io.ConfigWindowsResizeFromEdges and make sure mouse cursors are supported by back-end (io.BackendFlags & ImGuiBackendFlags_HasMouseCursors)
+    //ImGuiWindowFlags_ShowBorders          = 1 << 7,   // --> Set style.FrameBorderSize=1.0f or style.WindowBorderSize=1.0f to enable borders around items or windows.
+    //ImGuiWindowFlags_ResizeFromAnySide    = 1 << 17,  // --> Set io.ConfigWindowsResizeFromEdges=true and make sure mouse cursors are supported by back-end (io.BackendFlags & ImGuiBackendFlags_HasMouseCursors)
 };
 
 // Flags for ImGui::InputText()
@@ -796,11 +829,6 @@ enum ImGuiTreeNodeFlags_
     ImGuiTreeNodeFlags_NavLeftJumpsBackHere = 1 << 13,  // (WIP) Nav: left direction may move to this TreeNode() from any of its child (items submitted between TreeNode and TreePop)
     //ImGuiTreeNodeFlags_NoScrollOnOpen     = 1 << 14,  // FIXME: TODO: Disable automatic scroll on TreePop() if node got just open and contents is not visible
     ImGuiTreeNodeFlags_CollapsingHeader     = ImGuiTreeNodeFlags_Framed | ImGuiTreeNodeFlags_NoTreePushOnOpen | ImGuiTreeNodeFlags_NoAutoOpenOnLog
-
-    // Obsolete names (will be removed)
-#ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS
-    , ImGuiTreeNodeFlags_AllowOverlapMode = ImGuiTreeNodeFlags_AllowItemOverlap // [renamed in 1.53]
-#endif
 };
 
 // Flags for ImGui::Selectable()
@@ -950,12 +978,12 @@ enum ImGuiKey_
     ImGuiKey_Enter,
     ImGuiKey_Escape,
     ImGuiKey_KeyPadEnter,
-    ImGuiKey_A,         // for text edit CTRL+A: select all
-    ImGuiKey_C,         // for text edit CTRL+C: copy
-    ImGuiKey_V,         // for text edit CTRL+V: paste
-    ImGuiKey_X,         // for text edit CTRL+X: cut
-    ImGuiKey_Y,         // for text edit CTRL+Y: redo
-    ImGuiKey_Z,         // for text edit CTRL+Z: undo
+    ImGuiKey_A,                 // for text edit CTRL+A: select all
+    ImGuiKey_C,                 // for text edit CTRL+C: copy
+    ImGuiKey_V,                 // for text edit CTRL+V: paste
+    ImGuiKey_X,                 // for text edit CTRL+X: cut
+    ImGuiKey_Y,                 // for text edit CTRL+Y: redo
+    ImGuiKey_Z,                 // for text edit CTRL+Z: undo
     ImGuiKey_COUNT
 };
 
@@ -986,7 +1014,6 @@ enum ImGuiNavInput_
     // [Internal] Don't use directly! This is used internally to differentiate keyboard from gamepad inputs for behaviors that require to differentiate them.
     // Keyboard behavior that have no corresponding gamepad mapping (e.g. CTRL+TAB) will be directly reading from io.KeysDown[] instead of io.NavInputs[].
     ImGuiNavInput_KeyMenu_,      // toggle menu                                  // = io.KeyAlt
-    ImGuiNavInput_KeyTab_,       // tab                                          // = Tab key
     ImGuiNavInput_KeyLeft_,      // move left                                    // = Arrow keys
     ImGuiNavInput_KeyRight_,     // move right
     ImGuiNavInput_KeyUp_,        // move up
@@ -1018,7 +1045,7 @@ enum ImGuiBackendFlags_
     ImGuiBackendFlags_HasGamepad            = 1 << 0,   // Back-end Platform supports gamepad and currently has one connected.
     ImGuiBackendFlags_HasMouseCursors       = 1 << 1,   // Back-end Platform supports honoring GetMouseCursor() value to change the OS cursor shape.
     ImGuiBackendFlags_HasSetMousePos        = 1 << 2,   // Back-end Platform supports io.WantSetMousePos requests to reposition the OS mouse position (only used if ImGuiConfigFlags_NavEnableSetMousePos is set).
-    ImGuiBackendFlags_RendererHasVtxOffset  = 1 << 3    // Back-end Renderer supports ImDrawCmd::VtxOffset. This enables output of large meshes (64K+ vertices) while still using 16-bits indices.
+    ImGuiBackendFlags_RendererHasVtxOffset  = 1 << 3    // Back-end Renderer supports ImDrawCmd::VtxOffset. This enables output of large meshes (64K+ vertices) while still using 16-bit indices.
 };
 
 // Enumeration for PushStyleColor() / PopStyleColor()
@@ -1077,9 +1104,7 @@ enum ImGuiCol_
     // Obsolete names (will be removed)
 #ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS
     , ImGuiCol_ModalWindowDarkening = ImGuiCol_ModalWindowDimBg                      // [renamed in 1.63]
-    , ImGuiCol_ChildWindowBg = ImGuiCol_ChildBg                                      // [renamed in 1.53]
-    //ImGuiCol_CloseButton, ImGuiCol_CloseButtonActive, ImGuiCol_CloseButtonHovered, // [unused since 1.60+] the close button now uses regular button colors.
-    //ImGuiCol_ComboBg,                                                              // [unused since 1.53+] ComboBg has been merged with PopupBg, so a redirect isn't accurate.
+    //, ImGuiCol_CloseButton, ImGuiCol_CloseButtonActive, ImGuiCol_CloseButtonHovered// [unused since 1.60+] the close button now uses regular button colors.
 #endif
 };
 
@@ -1116,8 +1141,7 @@ enum ImGuiStyleVar_
 
     // Obsolete names (will be removed)
 #ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS
-    , ImGuiStyleVar_Count_ = ImGuiStyleVar_COUNT                        // [renamed in 1.60]
-    , ImGuiStyleVar_ChildWindowRounding = ImGuiStyleVar_ChildRounding   // [renamed in 1.53]
+    , ImGuiStyleVar_Count_ = ImGuiStyleVar_COUNT                    // [renamed in 1.60]
 #endif
 };
 
@@ -1166,6 +1190,16 @@ enum ImGuiColorEditFlags_
 #endif
 };
 
+// Identify a mouse button.
+// Those values are guaranteed to be stable and we frequently use 0/1 directly. Named enums provided for convenience.
+enum ImGuiMouseButton_
+{
+    ImGuiMouseButton_Left = 0,
+    ImGuiMouseButton_Right = 1,
+    ImGuiMouseButton_Middle = 2,
+    ImGuiMouseButton_COUNT = 5
+};
+
 // Enumeration for GetMouseCursor()
 // User code may request binding to display given cursor by calling SetMouseCursor(), which is why we have some cursors that are marked unused here
 enum ImGuiMouseCursor_
@@ -1179,6 +1213,7 @@ enum ImGuiMouseCursor_
     ImGuiMouseCursor_ResizeNESW,        // When hovering over the bottom-left corner of a window
     ImGuiMouseCursor_ResizeNWSE,        // When hovering over the bottom-right corner of a window
     ImGuiMouseCursor_Hand,              // (Unused by Dear ImGui functions. Use for e.g. hyperlinks)
+    ImGuiMouseCursor_NotAllowed,        // When hovering something with disallowed interaction. Usually a crossed circle.
     ImGuiMouseCursor_COUNT
 
     // Obsolete names (will be removed)
@@ -1187,7 +1222,7 @@ enum ImGuiMouseCursor_
 #endif
 };
 
-// Enumateration for ImGui::SetWindow***(), SetNextWindow***(), SetNextItem***() functions
+// Enumeration for ImGui::SetWindow***(), SetNextWindow***(), SetNextItem***() functions
 // Represent a condition.
 // Important: Treat as a regular enum! Do NOT combine multiple values using binary operators! All the functions above treat 0 as a shortcut to ImGuiCond_Always.
 enum ImGuiCond_
@@ -1217,10 +1252,12 @@ template<typename T> void IM_DELETE(T* p)   { if (p) { p->~T(); ImGui::MemFree(p
 //-----------------------------------------------------------------------------
 // Helper: ImVector<>
 // Lightweight std::vector<>-like class to avoid dragging dependencies (also, some implementations of STL with debug enabled are absurdly slow, we bypass it so our code runs fast in debug).
-// You generally do NOT need to care or use this ever. But we need to make it available in imgui.h because some of our data structures are relying on it.
-// Important: clear() frees memory, resize(0) keep the allocated buffer. We use resize(0) a lot to intentionally recycle allocated buffers across frames and amortize our costs.
-// Important: our implementation does NOT call C++ constructors/destructors, we treat everything as raw data! This is intentional but be extra mindful of that,
-// do NOT use this class as a std::vector replacement in your own code! Many of the structures used by dear imgui can be safely initialized by a zero-memset.
+//-----------------------------------------------------------------------------
+// - You generally do NOT need to care or use this ever. But we need to make it available in imgui.h because some of our public structures are relying on it.
+// - We use std-like naming convention here, which is a little unusual for this codebase.
+// - Important: clear() frees memory, resize(0) keep the allocated buffer. We use resize(0) a lot to intentionally recycle allocated buffers across frames and amortize our costs.
+// - Important: our implementation does NOT call C++ constructors/destructors, we treat everything as raw data! This is intentional but be extra mindful of that,
+//   Do NOT use this class as a std::vector replacement in your own code! Many of the structures used by dear imgui can be safely initialized by a zero-memset.
 //-----------------------------------------------------------------------------
 
 template<typename T>
@@ -1262,6 +1299,7 @@ struct ImVector
     inline int          _grow_capacity(int sz) const        { int new_capacity = Capacity ? (Capacity + Capacity/2) : 8; return new_capacity > sz ? new_capacity : sz; }
     inline void         resize(int new_size)                { if (new_size > Capacity) reserve(_grow_capacity(new_size)); Size = new_size; }
     inline void         resize(int new_size, const T& v)    { if (new_size > Capacity) reserve(_grow_capacity(new_size)); if (new_size > Size) for (int n = Size; n < new_size; n++) memcpy(&Data[n], &v, sizeof(v)); Size = new_size; }
+    inline void         shrink(int new_size)                { IM_ASSERT(new_size <= Size); Size = new_size; } // Resize a vector to a smaller size, guaranteed not to cause a reallocation
     inline void         reserve(int new_capacity)           { if (new_capacity <= Capacity) return; T* new_data = (T*)IM_ALLOC((size_t)new_capacity * sizeof(T)); if (Data) { memcpy(new_data, Data, (size_t)Size * sizeof(T)); IM_FREE(Data); } Data = new_data; Capacity = new_capacity; }
 
     // NB: It is illegal to call push_back/push_front/insert with a reference pointing inside the ImVector data itself! e.g. v.push_back(v[10]) is forbidden.
@@ -1277,7 +1315,7 @@ struct ImVector
     inline const T*     find(const T& v) const              { const T* data = Data;  const T* data_end = Data + Size; while (data < data_end) if (*data == v) break; else ++data; return data; }
     inline bool         find_erase(const T& v)              { const T* it = find(v); if (it < Data + Size) { erase(it); return true; } return false; }
     inline bool         find_erase_unsorted(const T& v)     { const T* it = find(v); if (it < Data + Size) { erase_unsorted(it); return true; } return false; }
-    inline int          index_from_ptr(const T* it) const   { IM_ASSERT(it >= Data && it <= Data+Size); const ptrdiff_t off = it - Data; return (int)off; }
+    inline int          index_from_ptr(const T* it) const   { IM_ASSERT(it >= Data && it < Data + Size); const ptrdiff_t off = it - Data; return (int)off; }
 };
 
 //-----------------------------------------------------------------------------
@@ -1323,6 +1361,7 @@ struct ImGuiStyle
     bool        AntiAliasedLines;           // Enable anti-aliasing on lines/borders. Disable if you are really tight on CPU/GPU.
     bool        AntiAliasedFill;            // Enable anti-aliasing on filled shapes (rounded rectangles, circles, etc.)
     float       CurveTessellationTol;       // Tessellation tolerance when using PathBezierCurveTo() without a specific number of segments. Decrease for highly tessellated curves (higher quality, more polygons), increase to reduce quality.
+    float       CircleSegmentMaxError;      // Maximum error (in pixels) allowed when using AddCircle()/AddCircleFilled() or drawing rounded corner rectangles with no explicit segment count specified. Decrease for higher quality but more geometry.
     ImVec4      Colors[ImGuiCol_COUNT];
 
     IMGUI_API ImGuiStyle();
@@ -1378,9 +1417,9 @@ struct ImGuiIO
     // Optional: Platform/Renderer back-end name (informational only! will be displayed in About Window) + User data for back-end/wrappers to store their own stuff.
     const char* BackendPlatformName;            // = NULL
     const char* BackendRendererName;            // = NULL
-    void*       BackendPlatformUserData;        // = NULL
-    void*       BackendRendererUserData;        // = NULL
-    void*       BackendLanguageUserData;        // = NULL
+    void*       BackendPlatformUserData;        // = NULL           // User data for platform back-end
+    void*       BackendRendererUserData;        // = NULL           // User data for renderer back-end
+    void*       BackendLanguageUserData;        // = NULL           // User data for non C++ programming language back-end
 
     // Optional: Access OS clipboard
     // (default to use native Win32 clipboard on Windows, otherwise uses a private clipboard. Override to access OS clipboard on other architectures)
@@ -1442,7 +1481,7 @@ struct ImGuiIO
     ImVec2      MouseDelta;                     // Mouse delta. Note that this is zero if either current or previous position are invalid (-FLT_MAX,-FLT_MAX), so a disappearing/reappearing mouse won't have a huge delta.
 
     //------------------------------------------------------------------
-    // [Internal] ImGui will maintain those fields. Forward compatibility not guaranteed!
+    // [Internal] Dear ImGui will maintain those fields. Forward compatibility not guaranteed!
     //------------------------------------------------------------------
 
     ImVec2      MousePosPrev;                   // Previous mouse position (note that MouseDelta is not necessary == MousePos-MousePosPrev, in case either position is invalid)
@@ -1566,17 +1605,6 @@ namespace ImGui
     static inline bool  IsAnyWindowFocused()                  { return IsWindowFocused(ImGuiFocusedFlags_AnyWindow); }
     static inline bool  IsAnyWindowHovered()                  { return IsWindowHovered(ImGuiHoveredFlags_AnyWindow); }
     static inline ImVec2 CalcItemRectClosestPoint(const ImVec2& pos, bool on_edge = false, float outward = 0.f) { IM_UNUSED(on_edge); IM_UNUSED(outward); IM_ASSERT(0); return pos; }
-    // OBSOLETED in 1.53 (between Oct 2017 and Dec 2017)
-    static inline void  ShowTestWindow()                      { return ShowDemoWindow(); }
-    static inline bool  IsRootWindowFocused()                 { return IsWindowFocused(ImGuiFocusedFlags_RootWindow); }
-    static inline bool  IsRootWindowOrAnyChildFocused()       { return IsWindowFocused(ImGuiFocusedFlags_RootAndChildWindows); }
-    static inline void  SetNextWindowContentWidth(float w)    { SetNextWindowContentSize(ImVec2(w, 0.0f)); }
-    static inline float GetItemsLineHeightWithSpacing()       { return GetFrameHeightWithSpacing(); }
-    // OBSOLETED in 1.52 (between Aug 2017 and Oct 2017)
-    IMGUI_API bool      Begin(const char* name, bool* p_open, const ImVec2& size_on_first_use, float bg_alpha_override = -1.0f, ImGuiWindowFlags flags = 0); // Use SetNextWindowSize(size, ImGuiCond_FirstUseEver) + SetNextWindowBgAlpha() instead.
-    static inline bool  IsRootWindowOrAnyChildHovered()       { return IsWindowHovered(ImGuiHoveredFlags_RootAndChildWindows); }
-    static inline void  AlignFirstTextHeightToWidgets()       { AlignTextToFramePadding(); }
-    static inline void  SetNextWindowPosCenter(ImGuiCond c=0) { ImGuiIO& io = GetIO(); SetNextWindowPos(ImVec2(io.DisplaySize.x * 0.5f, io.DisplaySize.y * 0.5f), c, ImVec2(0.5f, 0.5f)); }
 }
 typedef ImGuiInputTextCallback      ImGuiTextEditCallback;    // OBSOLETED in 1.63 (from Aug 2018): made the names consistent
 typedef ImGuiInputTextCallbackData  ImGuiTextEditCallbackData;
@@ -1629,11 +1657,11 @@ struct ImGuiTextBuffer
     IMGUI_API static char EmptyString[1];
 
     ImGuiTextBuffer()   { }
-    inline char         operator[](int i)       { IM_ASSERT(Buf.Data != NULL); return Buf.Data[i]; }
+    inline char         operator[](int i) const { IM_ASSERT(Buf.Data != NULL); return Buf.Data[i]; }
     const char*         begin() const           { return Buf.Data ? &Buf.front() : EmptyString; }
     const char*         end() const             { return Buf.Data ? &Buf.back() : EmptyString; }   // Buf is zero-terminated, so end() will point on the zero-terminator
     int                 size() const            { return Buf.Size ? Buf.Size - 1 : 0; }
-    bool                empty()                 { return Buf.Size <= 1; }
+    bool                empty() const           { return Buf.Size <= 1; }
     void                clear()                 { Buf.clear(); }
     void                reserve(int capacity)   { Buf.reserve(capacity); }
     const char*         c_str() const           { return Buf.Data ? Buf.Data : EmptyString; }
@@ -1708,9 +1736,13 @@ struct ImGuiStorage
 // - Step 3: the clipper validate that we have reached the expected Y position (corresponding to element DisplayEnd), advance the cursor to the end of the list and then returns 'false' to end the loop.
 struct ImGuiListClipper
 {
-    float   StartPosY;
+    int     DisplayStart, DisplayEnd;
+    int     ItemsCount;
+
+    // [Internal]
+    int     StepNo;
     float   ItemsHeight;
-    int     ItemsCount, StepNo, DisplayStart, DisplayEnd;
+    float   StartPosY;
 
     // items_count:  Use -1 to ignore (you can call Begin later). Use INT_MAX if you don't know how many items you have (in which case the cursor won't be advanced in the final step).
     // items_height: Use -1.0f to be calculated automatically on first step. Otherwise pass in the distance between your items, typically GetTextLineHeightWithSpacing() or GetFrameHeightWithSpacing().
@@ -1723,7 +1755,7 @@ struct ImGuiListClipper
     IMGUI_API void End();                                               // Automatically called on the last call of Step() that returns false.
 };
 
-// Helpers macros to generate 32-bits encoded colors
+// Helpers macros to generate 32-bit encoded colors
 #ifdef IMGUI_USE_BGRA_PACKED_COLOR
 #define IM_COL32_R_SHIFT    16
 #define IM_COL32_G_SHIFT    8
@@ -1787,13 +1819,13 @@ typedef void (*ImDrawCallback)(const ImDrawList* parent_list, const ImDrawCmd* c
 
 // Typically, 1 command = 1 GPU draw call (unless command is a callback)
 // Pre 1.71 back-ends will typically ignore the VtxOffset/IdxOffset fields. When 'io.BackendFlags & ImGuiBackendFlags_RendererHasVtxOffset'
-// is enabled, those fields allow us to render meshes larger than 64K vertices while keeping 16-bits indices.
+// is enabled, those fields allow us to render meshes larger than 64K vertices while keeping 16-bit indices.
 struct ImDrawCmd
 {
     unsigned int    ElemCount;              // Number of indices (multiple of 3) to be rendered as triangles. Vertices are stored in the callee ImDrawList's vtx_buffer[] array, indices in idx_buffer[].
     ImVec4          ClipRect;               // Clipping rectangle (x1, y1, x2, y2). Subtract ImDrawData->DisplayPos to get clipping rectangle in "viewport" coordinates
     ImTextureID     TextureId;              // User-provided texture ID. Set by user in ImfontAtlas::SetTexID() for fonts or passed to Image*() functions. Ignore if never using images or multiple fonts atlas.
-    unsigned int    VtxOffset;              // Start offset in vertex buffer. Pre-1.71 or without ImGuiBackendFlags_RendererHasVtxOffset: always 0. With ImGuiBackendFlags_RendererHasVtxOffset: may be >0 to support meshes larger than 64K vertices with 16-bits indices.
+    unsigned int    VtxOffset;              // Start offset in vertex buffer. Pre-1.71 or without ImGuiBackendFlags_RendererHasVtxOffset: always 0. With ImGuiBackendFlags_RendererHasVtxOffset: may be >0 to support meshes larger than 64K vertices with 16-bit indices.
     unsigned int    IdxOffset;              // Start offset in index buffer. Always equal to sum of ElemCount drawn so far.
     ImDrawCallback  UserCallback;           // If != NULL, call the function instead of rendering the vertices. clip_rect and texture_id will be set normally.
     void*           UserCallbackData;       // The draw callback code can access this.
@@ -1802,8 +1834,8 @@ struct ImDrawCmd
 };
 
 // Vertex index
-// (to allow large meshes with 16-bits indices: set 'io.BackendFlags |= ImGuiBackendFlags_RendererHasVtxOffset' and handle ImDrawCmd::VtxOffset in the renderer back-end)
-// (to use 32-bits indices: override with '#define ImDrawIdx unsigned int' in imconfig.h)
+// (to allow large meshes with 16-bit indices: set 'io.BackendFlags |= ImGuiBackendFlags_RendererHasVtxOffset' and handle ImDrawCmd::VtxOffset in the renderer back-end)
+// (to use 32-bit indices: override with '#define ImDrawIdx unsigned int' in imconfig.h)
 #ifndef ImDrawIdx
 typedef unsigned short ImDrawIdx;
 #endif
@@ -1911,8 +1943,11 @@ struct ImDrawList
 
     // Primitives
     // - For rectangular primitives, "p_min" and "p_max" represent the upper-left and lower-right corners.
+    // - For circle primitives, use "num_segments == 0" to automatically calculate tessellation (preferred). 
+    //   In future versions we will use textures to provide cheaper and higher-quality circles. 
+    //   Use AddNgon() and AddNgonFilled() functions if you need to guaranteed a specific number of sides.
     IMGUI_API void  AddLine(const ImVec2& p1, const ImVec2& p2, ImU32 col, float thickness = 1.0f);
-    IMGUI_API void  AddRect(const ImVec2& p_min, const ImVec2& p_max, ImU32 col, float rounding = 0.0f, ImDrawCornerFlags rounding_corners = ImDrawCornerFlags_All, float thickness = 1.0f);   // a: upper-left, b: lower-right (== upper-left + size), rounding_corners_flags: 4-bits corresponding to which corner to round
+    IMGUI_API void  AddRect(const ImVec2& p_min, const ImVec2& p_max, ImU32 col, float rounding = 0.0f, ImDrawCornerFlags rounding_corners = ImDrawCornerFlags_All, float thickness = 1.0f);   // a: upper-left, b: lower-right (== upper-left + size), rounding_corners_flags: 4 bits corresponding to which corner to round
     IMGUI_API void  AddRectFilled(const ImVec2& p_min, const ImVec2& p_max, ImU32 col, float rounding = 0.0f, ImDrawCornerFlags rounding_corners = ImDrawCornerFlags_All);                     // a: upper-left, b: lower-right (== upper-left + size)
     IMGUI_API void  AddRectFilledMultiColor(const ImVec2& p_min, const ImVec2& p_max, ImU32 col_upr_left, ImU32 col_upr_right, ImU32 col_bot_right, ImU32 col_bot_left);
     IMGUI_API void  AddQuad(const ImVec2& p1, const ImVec2& p2, const ImVec2& p3, const ImVec2& p4, ImU32 col, float thickness = 1.0f);
@@ -1921,11 +1956,13 @@ struct ImDrawList
     IMGUI_API void  AddTriangleFilled(const ImVec2& p1, const ImVec2& p2, const ImVec2& p3, ImU32 col);
     IMGUI_API void  AddCircle(const ImVec2& center, float radius, ImU32 col, int num_segments = 12, float thickness = 1.0f);
     IMGUI_API void  AddCircleFilled(const ImVec2& center, float radius, ImU32 col, int num_segments = 12);
+    IMGUI_API void  AddNgon(const ImVec2& center, float radius, ImU32 col, int num_segments, float thickness = 1.0f);
+    IMGUI_API void  AddNgonFilled(const ImVec2& center, float radius, ImU32 col, int num_segments);
     IMGUI_API void  AddText(const ImVec2& pos, ImU32 col, const char* text_begin, const char* text_end = NULL);
     IMGUI_API void  AddText(const ImFont* font, float font_size, const ImVec2& pos, ImU32 col, const char* text_begin, const char* text_end = NULL, float wrap_width = 0.0f, const ImVec4* cpu_fine_clip_rect = NULL);
     IMGUI_API void  AddPolyline(const ImVec2* points, int num_points, ImU32 col, bool closed, float thickness);
     IMGUI_API void  AddConvexPolyFilled(const ImVec2* points, int num_points, ImU32 col); // Note: Anti-aliased filling requires points to be in clockwise order.
-    IMGUI_API void  AddBezierCurve(const ImVec2& pos0, const ImVec2& cp0, const ImVec2& cp1, const ImVec2& pos1, ImU32 col, float thickness, int num_segments = 0);
+    IMGUI_API void  AddBezierCurve(const ImVec2& p1, const ImVec2& p2, const ImVec2& p3, const ImVec2& p4, ImU32 col, float thickness, int num_segments = 0);
 
     // Image primitives
     // - Read FAQ to understand what ImTextureID is.
@@ -1943,7 +1980,7 @@ struct ImDrawList
     inline    void  PathStroke(ImU32 col, bool closed, float thickness = 1.0f)  { AddPolyline(_Path.Data, _Path.Size, col, closed, thickness); _Path.Size = 0; }
     IMGUI_API void  PathArcTo(const ImVec2& center, float radius, float a_min, float a_max, int num_segments = 10);
     IMGUI_API void  PathArcToFast(const ImVec2& center, float radius, int a_min_of_12, int a_max_of_12);                                            // Use precomputed angles for a 12 steps circle
-    IMGUI_API void  PathBezierCurveTo(const ImVec2& p1, const ImVec2& p2, const ImVec2& p3, int num_segments = 0);
+    IMGUI_API void  PathBezierCurveTo(const ImVec2& p2, const ImVec2& p3, const ImVec2& p4, int num_segments = 0);
     IMGUI_API void  PathRect(const ImVec2& rect_min, const ImVec2& rect_max, float rounding = 0.0f, ImDrawCornerFlags rounding_corners = ImDrawCornerFlags_All);
 
     // Advanced
@@ -1952,8 +1989,11 @@ struct ImDrawList
     IMGUI_API ImDrawList* CloneOutput() const;                                  // Create a clone of the CmdBuffer/IdxBuffer/VtxBuffer.
 
     // Advanced: Channels
-    // - Use to split render into layers. By switching channels to can render out-of-order (e.g. submit foreground primitives before background primitives)
-    // - Use to minimize draw calls (e.g. if going back-and-forth between multiple non-overlapping clipping rectangles, prefer to append into separate channels then merge at the end)
+    // - Use to split render into layers. By switching channels to can render out-of-order (e.g. submit FG primitives before BG primitives)
+    // - Use to minimize draw calls (e.g. if going back-and-forth between multiple clipping rectangles, prefer to append into separate channels then merge at the end)
+    // - FIXME-OBSOLETE: This API shouldn't have been in ImDrawList in the first place!
+    //   Prefer using your own persistent copy of ImDrawListSplitter as you can stack them.
+    //   Using the ImDrawList::ChannelsXXXX you cannot stack a split over another.
     inline void     ChannelsSplit(int count)    { _Splitter.Split(this, count); }
     inline void     ChannelsMerge()             { _Splitter.Merge(this); }
     inline void     ChannelsSetCurrent(int n)   { _Splitter.SetCurrentChannel(this, n); }
@@ -1963,6 +2003,7 @@ struct ImDrawList
     IMGUI_API void  Clear();
     IMGUI_API void  ClearFreeMemory();
     IMGUI_API void  PrimReserve(int idx_count, int vtx_count);
+    IMGUI_API void  PrimUnreserve(int idx_count, int vtx_count);
     IMGUI_API void  PrimRect(const ImVec2& a, const ImVec2& b, ImU32 col);      // Axis aligned rectangle (composed of two triangles)
     IMGUI_API void  PrimRectUV(const ImVec2& a, const ImVec2& b, const ImVec2& uv_a, const ImVec2& uv_b, ImU32 col);
     IMGUI_API void  PrimQuadUV(const ImVec2& a, const ImVec2& b, const ImVec2& c, const ImVec2& d, const ImVec2& uv_a, const ImVec2& uv_b, const ImVec2& uv_c, const ImVec2& uv_d, ImU32 col);
@@ -2041,7 +2082,7 @@ struct ImFontGlyphRangesBuilder
     ImVector<ImU32> UsedChars;            // Store 1-bit per Unicode code point (0=unused, 1=used)
 
     ImFontGlyphRangesBuilder()          { Clear(); }
-    inline void     Clear()             { int size_in_bytes = 0x10000 / 8; UsedChars.resize(size_in_bytes / (int)sizeof(ImU32)); memset(UsedChars.Data, 0, (size_t)size_in_bytes); }
+    inline void     Clear()             { int size_in_bytes = (IM_UNICODE_CODEPOINT_MAX+1) / 8; UsedChars.resize(size_in_bytes / (int)sizeof(ImU32)); memset(UsedChars.Data, 0, (size_t)size_in_bytes); }
     inline bool     GetBit(int n) const { int off = (n >> 5); ImU32 mask = 1u << (n & 31); return (UsedChars[off] & mask) != 0; }  // Get bit n in the array
     inline void     SetBit(int n)       { int off = (n >> 5); ImU32 mask = 1u << (n & 31); UsedChars[off] |= mask; }               // Set bit n in the array
     inline void     AddChar(ImWchar c)  { SetBit(c); }                          // Add character
@@ -2053,12 +2094,12 @@ struct ImFontGlyphRangesBuilder
 // See ImFontAtlas::AddCustomRectXXX functions.
 struct ImFontAtlasCustomRect
 {
-    unsigned int    ID;             // Input    // User ID. Use <0x10000 to map into a font glyph, >=0x10000 for other/internal/custom texture data.
+    unsigned int    ID;             // Input    // User ID. Use < 0x110000 to map into a font glyph, >= 0x110000 for other/internal/custom texture data.
     unsigned short  Width, Height;  // Input    // Desired rectangle dimension
     unsigned short  X, Y;           // Output   // Packed position in Atlas
-    float           GlyphAdvanceX;  // Input    // For custom font glyphs only (ID<0x10000): glyph xadvance
-    ImVec2          GlyphOffset;    // Input    // For custom font glyphs only (ID<0x10000): glyph display offset
-    ImFont*         Font;           // Input    // For custom font glyphs only (ID<0x10000): target font
+    float           GlyphAdvanceX;  // Input    // For custom font glyphs only (ID < 0x110000): glyph xadvance
+    ImVec2          GlyphOffset;    // Input    // For custom font glyphs only (ID < 0x110000): glyph display offset
+    ImFont*         Font;           // Input    // For custom font glyphs only (ID < 0x110000): target font
     ImFontAtlasCustomRect()         { ID = 0xFFFFFFFF; Width = Height = 0; X = Y = 0xFFFF; GlyphAdvanceX = 0.0f; GlyphOffset = ImVec2(0,0); Font = NULL; }
     bool IsPacked() const           { return X != 0xFFFF; }
 };
@@ -2110,7 +2151,7 @@ struct ImFontAtlas
     IMGUI_API bool              Build();                    // Build pixels data. This is called automatically for you by the GetTexData*** functions.
     IMGUI_API void              GetTexDataAsAlpha8(unsigned char** out_pixels, int* out_width, int* out_height, int* out_bytes_per_pixel = NULL);  // 1 byte per-pixel
     IMGUI_API void              GetTexDataAsRGBA32(unsigned char** out_pixels, int* out_width, int* out_height, int* out_bytes_per_pixel = NULL);  // 4 bytes-per-pixel
-    bool                        IsBuilt()                   { return Fonts.Size > 0 && (TexPixelsAlpha8 != NULL || TexPixelsRGBA32 != NULL); }
+    bool                        IsBuilt() const             { return Fonts.Size > 0 && (TexPixelsAlpha8 != NULL || TexPixelsRGBA32 != NULL); }
     void                        SetTexID(ImTextureID id)    { TexID = id; }
 
     //-------------------------------------------
@@ -2137,13 +2178,13 @@ struct ImFontAtlas
     // After calling Build(), you can query the rectangle position and render your pixels.
     // You can also request your rectangles to be mapped as font glyph (given a font + Unicode point),
     // so you can render e.g. custom colorful icons and use them as regular glyphs.
-    // Read misc/fonts/README.txt for more details about using colorful icons.
-    IMGUI_API int               AddCustomRectRegular(unsigned int id, int width, int height);                                                                   // Id needs to be >= 0x10000. Id >= 0x80000000 are reserved for ImGui and ImDrawList
-    IMGUI_API int               AddCustomRectFontGlyph(ImFont* font, ImWchar id, int width, int height, float advance_x, const ImVec2& offset = ImVec2(0,0));   // Id needs to be < 0x10000 to register a rectangle to map into a specific font.
+    // Read docs/FONTS.txt for more details about using colorful icons.
+    IMGUI_API int               AddCustomRectRegular(unsigned int id, int width, int height);                                                                   // Id needs to be >= 0x110000. Id >= 0x80000000 are reserved for ImGui and ImDrawList
+    IMGUI_API int               AddCustomRectFontGlyph(ImFont* font, ImWchar id, int width, int height, float advance_x, const ImVec2& offset = ImVec2(0,0));   // Id needs to be < 0x110000 to register a rectangle to map into a specific font.
     const ImFontAtlasCustomRect*GetCustomRectByIndex(int index) const { if (index < 0) return NULL; return &CustomRects[index]; }
 
     // [Internal]
-    IMGUI_API void              CalcCustomRectUV(const ImFontAtlasCustomRect* rect, ImVec2* out_uv_min, ImVec2* out_uv_max);
+    IMGUI_API void              CalcCustomRectUV(const ImFontAtlasCustomRect* rect, ImVec2* out_uv_min, ImVec2* out_uv_max) const;
     IMGUI_API bool              GetMouseCursorTexData(ImGuiMouseCursor cursor, ImVec2* out_offset, ImVec2* out_size, ImVec2 out_uv_border[2], ImVec2 out_uv_fill[2]);
 
     //-------------------------------------------
@@ -2196,10 +2237,10 @@ struct ImFont
     short                       ConfigDataCount;    // 2     // in  // ~ 1        // Number of ImFontConfig involved in creating this font. Bigger than 1 when merging multiple font sources into one ImFont.
     ImWchar                     FallbackChar;       // 2     // in  // = '?'      // Replacement character if a glyph isn't found. Only set via SetFallbackChar()
     ImWchar                     EllipsisChar;       // 2     // out // = -1       // Character used for ellipsis rendering.
+    bool                        DirtyLookupTables;  // 1     // out //
     float                       Scale;              // 4     // in  // = 1.f      // Base font scale, multiplied by the per-window font scale which you can adjust with SetWindowFontScale()
     float                       Ascent, Descent;    // 4+4   // out //            // Ascent: distance from top to bottom of e.g. 'A' [0..FontSize]
     int                         MetricsTotalSurface;// 4     // out //            // Total surface in pixels to get an idea of the font rasterization/texture cost (not exact, we approximate the cost of padding between glyphs)
-    bool                        DirtyLookupTables;  // 1     // out //
 
     // Methods
     IMGUI_API ImFont();
@@ -2224,10 +2265,6 @@ struct ImFont
     IMGUI_API void              AddGlyph(ImWchar c, float x0, float y0, float x1, float y1, float u0, float v0, float u1, float v1, float advance_x);
     IMGUI_API void              AddRemapChar(ImWchar dst, ImWchar src, bool overwrite_dst = true); // Makes 'dst' character/glyph points to 'src' character/glyph. Currently needs to be called AFTER fonts have been built.
     IMGUI_API void              SetFallbackChar(ImWchar c);
-
-#ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS
-    typedef ImFontGlyph Glyph; // OBSOLETED in 1.52+
-#endif
 };
 
 #if defined(__clang__)
@@ -2240,3 +2277,5 @@ struct ImFont
 #ifdef IMGUI_INCLUDE_IMGUI_USER_H
 #include "imgui_user.h"
 #endif
+
+#endif // #ifndef IMGUI_DISABLE

imgui_demo.cpp

@@ -1,17 +1,24 @@
-// dear imgui, v1.73
+// dear imgui, v1.75
 // (demo code)
 
+// Help:
+// - Read FAQ at http://dearimgui.org/faq
+// - Newcomers, read 'Programmer guide' in imgui.cpp for notes on how to setup Dear ImGui in your codebase.
+// - Call and read ImGui::ShowDemoWindow() in imgui_demo.cpp for demo code. All applications in examples/ are doing that.
+// Read imgui.cpp for more details, documentation and comments.
+// Get latest version at https://github.com/ocornut/imgui
+
 // Message to the person tempted to delete this file when integrating Dear ImGui into their code base:
 // Do NOT remove this file from your project! Think again! It is the most useful reference code that you and other coders
 // will want to refer to and call. Have the ImGui::ShowDemoWindow() function wired in an always-available debug menu of
 // your game/app! Removing this file from your project is hindering access to documentation for everyone in your team,
 // likely leading you to poorer usage of the library.
 // Everything in this file will be stripped out by the linker if you don't call ImGui::ShowDemoWindow().
-// If you want to link core Dear ImGui in your shipped builds but want an easy guarantee that the demo will not be linked,
+// If you want to link core Dear ImGui in your shipped builds but want a thorough guarantee that the demo will not be linked,
 // you can setup your imconfig.h with #define IMGUI_DISABLE_DEMO_WINDOWS and those functions will be empty.
 // In other situation, whenever you have Dear ImGui available you probably want this to be available for reference.
 // Thank you,
-// -Your beloved friend, imgui_demo.cpp (that you won't delete)
+// -Your beloved friend, imgui_demo.cpp (which you won't delete)
 
 // Message to beginner C/C++ programmers about the meaning of the 'static' keyword:
 // In this demo code, we frequently we use 'static' variables inside functions. A static variable persist across calls, so it is
@@ -21,13 +28,13 @@
 // reentrant or used in multiple threads. This might be a pattern you will want to use in your code, but most of the real data
 // you would be editing is likely going to be stored outside your functions.
 
-// The Demo code is this file is designed to be easy to copy-and-paste in into your application!
+// The Demo code in this file is designed to be easy to copy-and-paste in into your application!
 // Because of this:
 // - We never omit the ImGui:: namespace when calling functions, even though most of our code is already in the same namespace.
 // - We try to declare static variables in the local scope, as close as possible to the code using them.
-// - We never use any of the helpers/facilities used internally by dear imgui, unless it has been exposed in the public API (imgui.h).
-// - We never use maths operators on ImVec2/ImVec4. For other imgui sources files, they are provided by imgui_internal.h w/ IMGUI_DEFINE_MATH_OPERATORS,
-//   for your own sources file they are optional and require you either enable those, either provide your own via IM_VEC2_CLASS_EXTRA in imconfig.h.
+// - We never use any of the helpers/facilities used internally by Dear ImGui, unless it has been exposed in the public API (imgui.h).
+// - We never use maths operators on ImVec2/ImVec4. For other of our sources files, they are provided by imgui_internal.h w/ IMGUI_DEFINE_MATH_OPERATORS.
+//   For your own sources file they are optional and require you either enable those, either provide your own via IM_VEC2_CLASS_EXTRA in imconfig.h.
 //   Because we don't want to assume anything about your support of maths operators, we don't use them in imgui_demo.cpp.
 
 /*
@@ -58,6 +65,8 @@ Index of this file:
 #endif
 
 #include "imgui.h"
+#ifndef IMGUI_DISABLE
+
 #include <ctype.h>          // toupper
 #include <limits.h>         // INT_MIN, INT_MAX
 #include <math.h>           // sqrtf, powf, cosf, sinf, floorf, ceilf
@@ -97,23 +106,24 @@ Index of this file:
 #pragma GCC diagnostic ignored "-Wmisleading-indentation"       // [__GNUC__ >= 6] warning: this 'if' clause does not guard this statement      // GCC 6.0+ only. See #883 on GitHub.
 #endif
 
-// Play it nice with Windows users. Notepad in 2017 still doesn't display text data with Unix-style \n.
+// Play it nice with Windows users (Update: since 2018-05, Notepad finally appears to support Unix-style carriage returns!)
 #ifdef _WIN32
 #define IM_NEWLINE  "\r\n"
-#define snprintf    _snprintf
-#define vsnprintf   _vsnprintf
 #else
 #define IM_NEWLINE  "\n"
 #endif
 
+#if defined(_MSC_VER) && !defined(snprintf)
+#define snprintf    _snprintf
+#endif
+#if defined(_MSC_VER) && !defined(vsnprintf)
+#define vsnprintf   _vsnprintf
+#endif
+
 //-----------------------------------------------------------------------------
 // [SECTION] Forward Declarations, Helpers
 //-----------------------------------------------------------------------------
 
-#if !defined(IMGUI_DISABLE_OBSOLETE_FUNCTIONS) && defined(IMGUI_DISABLE_TEST_WINDOWS) && !defined(IMGUI_DISABLE_DEMO_WINDOWS)   // Obsolete name since 1.53, TEST->DEMO
-#define IMGUI_DISABLE_DEMO_WINDOWS
-#endif
-
 #if !defined(IMGUI_DISABLE_DEMO_WINDOWS)
 
 // Forward Declarations
@@ -132,7 +142,7 @@ static void ShowExampleAppCustomRendering(bool* p_open);
 static void ShowExampleMenuFile();
 
 // Helper to display a little (?) mark which shows a tooltip when hovered.
-// In your own code you may want to display an actual icon if you are using a merged icon fonts (see misc/fonts/README.txt)
+// In your own code you may want to display an actual icon if you are using a merged icon fonts (see docs/FONTS.txt)
 static void HelpMarker(const char* desc)
 {
     ImGui::TextDisabled("(?)");
@@ -152,25 +162,28 @@ void ImGui::ShowUserGuide()
     ImGuiIO& io = ImGui::GetIO();
     ImGui::BulletText("Double-click on title bar to collapse window.");
     ImGui::BulletText("Click and drag on lower corner to resize window\n(double-click to auto fit window to its contents).");
-    if (io.ConfigWindowsMoveFromTitleBarOnly)
-        ImGui::BulletText("Click and drag on title bar to move window.");
-    else
-        ImGui::BulletText("Click and drag on any empty space to move window.");
-    ImGui::BulletText("TAB/SHIFT+TAB to cycle through keyboard editable fields.");
     ImGui::BulletText("CTRL+Click on a slider or drag box to input value as text.");
+    ImGui::BulletText("TAB/SHIFT+TAB to cycle through keyboard editable fields.");
     if (io.FontAllowUserScaling)
         ImGui::BulletText("CTRL+Mouse Wheel to zoom window contents.");
-    ImGui::BulletText("Mouse Wheel to scroll.");
-    ImGui::BulletText("While editing text:\n");
+    ImGui::BulletText("While inputing text:\n");
     ImGui::Indent();
-    ImGui::BulletText("Hold SHIFT or use mouse to select text.");
     ImGui::BulletText("CTRL+Left/Right to word jump.");
     ImGui::BulletText("CTRL+A or double-click to select all.");
-    ImGui::BulletText("CTRL+X,CTRL+C,CTRL+V to use clipboard.");
+    ImGui::BulletText("CTRL+X/C/V to use clipboard cut/copy/paste.");
     ImGui::BulletText("CTRL+Z,CTRL+Y to undo/redo.");
     ImGui::BulletText("ESCAPE to revert.");
     ImGui::BulletText("You can apply arithmetic operators +,*,/ on numerical values.\nUse +- to subtract.");
     ImGui::Unindent();
+    ImGui::BulletText("With keyboard navigation enabled:");
+    ImGui::Indent();
+    ImGui::BulletText("Arrow keys to navigate.");
+    ImGui::BulletText("Space to activate a widget.");
+    ImGui::BulletText("Return to input text into a widget.");
+    ImGui::BulletText("Escape to deactivate a widget, close popup, exit child window.");
+    ImGui::BulletText("Alt to jump to the menu layer of a window.");
+    ImGui::BulletText("CTRL+Tab to select a window.");
+    ImGui::Unindent();
 }
 
 //-----------------------------------------------------------------------------
@@ -311,12 +324,20 @@ void ImGui::ShowDemoWindow(bool* p_open)
 
     if (ImGui::CollapsingHeader("Help"))
     {
+        ImGui::Text("ABOUT THIS DEMO:");
+        ImGui::BulletText("Sections below are demonstrating many aspects of the library.");
+        ImGui::BulletText("The \"Examples\" menu above leads to more demo contents.");
+        ImGui::BulletText("The \"Tools\" menu above gives access to: About Box, Style Editor,\n"
+                          "and Metrics (general purpose Dear ImGui debugging tool).");
+        ImGui::Separator();
+
         ImGui::Text("PROGRAMMER GUIDE:");
-        ImGui::BulletText("Please see the ShowDemoWindow() code in imgui_demo.cpp. <- you are here!");
-        ImGui::BulletText("Please see the comments in imgui.cpp.");
-        ImGui::BulletText("Please see the examples/ application.");
-        ImGui::BulletText("Enable 'io.ConfigFlags |= NavEnableKeyboard' for keyboard controls.");
-        ImGui::BulletText("Enable 'io.ConfigFlags |= NavEnableGamepad' for gamepad controls.");
+        ImGui::BulletText("See the ShowDemoWindow() code in imgui_demo.cpp. <- you are here!");
+        ImGui::BulletText("See comments in imgui.cpp.");
+        ImGui::BulletText("See example applications in the examples/ folder.");
+        ImGui::BulletText("Read the FAQ at http://www.dearimgui.org/faq/");
+        ImGui::BulletText("Set 'io.ConfigFlags |= NavEnableKeyboard' for keyboard controls.");
+        ImGui::BulletText("Set 'io.ConfigFlags |= NavEnableGamepad' for gamepad controls.");
         ImGui::Separator();
 
         ImGui::Text("USER GUIDE:");
@@ -360,7 +381,7 @@ void ImGui::ShowDemoWindow(bool* p_open)
 
         if (ImGui::TreeNode("Backend Flags"))
         {
-            HelpMarker("Those flags are set by the back-ends (imgui_impl_xxx files) to specify their capabilities.");
+            HelpMarker("Those flags are set by the back-ends (imgui_impl_xxx files) to specify their capabilities.\nHere we expose then as read-only fields to avoid breaking interactions with your back-end.");
             ImGuiBackendFlags backend_flags = io.BackendFlags; // Make a local copy to avoid modifying actual back-end flags.
             ImGui::CheckboxFlags("io.BackendFlags: HasGamepad", (unsigned int *)&backend_flags, ImGuiBackendFlags_HasGamepad);
             ImGui::CheckboxFlags("io.BackendFlags: HasMouseCursors", (unsigned int *)&backend_flags, ImGuiBackendFlags_HasMouseCursors);
@@ -372,6 +393,7 @@ void ImGui::ShowDemoWindow(bool* p_open)
 
         if (ImGui::TreeNode("Style"))
         {
+            HelpMarker("The same contents can be accessed in 'Tools->Style Editor' or by calling the ShowStyleEditor() function.");
             ImGui::ShowStyleEditor();
             ImGui::TreePop();
             ImGui::Separator();
@@ -501,6 +523,8 @@ static void ShowDemoWindowWidgets()
         }
 
         {
+            // To wire InputText() with std::string or any other custom string type,
+            // see the "Text Input > Resize Callback" section of this demo, and the misc/cpp/imgui_stdlib.h file.
             static char str0[128] = "Hello, world!";
             ImGui::InputText("input text", str0, IM_ARRAYSIZE(str0));
             ImGui::SameLine(); HelpMarker("USER:\nHold SHIFT or use mouse to select text.\n" "CTRL+Left/Right to word jump.\n" "CTRL+A or double-click to select all.\n" "CTRL+X,CTRL+C,CTRL+V clipboard.\n" "CTRL+Z,CTRL+Y undo/redo.\n" "ESCAPE to revert.\n\nPROGRAMMER:\nYou can use the ImGuiInputTextFlags_CallbackResize facility if you need to wire InputText() to a dynamic string type. See misc/cpp/imgui_stdlib.h for an example (this is not demonstrated in imgui_demo.cpp).");
@@ -753,14 +777,14 @@ static void ShowDemoWindowWidgets()
         if (ImGui::TreeNode("UTF-8 Text"))
         {
             // UTF-8 test with Japanese characters
-            // (Needs a suitable font, try Noto, or Arial Unicode, or M+ fonts. Read misc/fonts/README.txt for details.)
+            // (Needs a suitable font, try Noto, or Arial Unicode, or M+ fonts. Read docs/FONTS.txt for details.)
             // - From C++11 you can use the u8"my text" syntax to encode literal strings as UTF-8
             // - For earlier compiler, you may be able to encode your sources as UTF-8 (e.g. Visual Studio save your file as 'UTF-8 without signature')
             // - FOR THIS DEMO FILE ONLY, BECAUSE WE WANT TO SUPPORT OLD COMPILERS, WE ARE *NOT* INCLUDING RAW UTF-8 CHARACTERS IN THIS SOURCE FILE.
             //   Instead we are encoding a few strings with hexadecimal constants. Don't do this in your application!
             //   Please use u8"text in any language" in your application!
             // Note that characters values are preserved even by InputText() if the font cannot be displayed, so you can safely copy & paste garbled characters into another application.
-            ImGui::TextWrapped("CJK text will only appears if the font was loaded with the appropriate CJK character ranges. Call io.Font->AddFontFromFileTTF() manually to load extra character ranges. Read misc/fonts/README.txt for details.");
+            ImGui::TextWrapped("CJK text will only appears if the font was loaded with the appropriate CJK character ranges. Call io.Font->AddFontFromFileTTF() manually to load extra character ranges. Read docs/FONTS.txt for details.");
             ImGui::Text("Hiragana: \xe3\x81\x8b\xe3\x81\x8d\xe3\x81\x8f\xe3\x81\x91\xe3\x81\x93 (kakikukeko)"); // Normally we would use u8"blah blah" with the proper characters directly in the string.
             ImGui::Text("Kanjis: \xe6\x97\xa5\xe6\x9c\xac\xe8\xaa\x9e (nihongo)");
             static char buf[32] = "\xe6\x97\xa5\xe6\x9c\xac\xe8\xaa\x9e";
@@ -923,7 +947,7 @@ static void ShowDemoWindowWidgets()
         if (ImGui::TreeNode("In columns"))
         {
             ImGui::Columns(3, NULL, false);
-            static bool selected[16] = { 0 };
+            static bool selected[16] = {};
             for (int i = 0; i < 16; i++)
             {
                 char label[32]; sprintf(label, "Item %d", i);
@@ -976,6 +1000,8 @@ static void ShowDemoWindowWidgets()
         ImGui::TreePop();
     }
 
+    // To wire InputText() with std::string or any other custom string type,
+    // see the "Text Input > Resize Callback" section of this demo, and the misc/cpp/imgui_stdlib.h file.
     if (ImGui::TreeNode("Text Input"))
     {
         if (ImGui::TreeNode("Multi-line Text Input"))
@@ -995,7 +1021,7 @@ static void ShowDemoWindowWidgets()
                 "\tlock cmpxchg8b eax\n";
 
             static ImGuiInputTextFlags flags = ImGuiInputTextFlags_AllowTabInput;
-            HelpMarker("You can use the ImGuiInputTextFlags_CallbackResize facility if you need to wire InputTextMultiline() to a dynamic string type. See misc/cpp/imgui_stdlib.h for an example. (This is not demonstrated in imgui_demo.cpp)");
+            HelpMarker("You can use the ImGuiInputTextFlags_CallbackResize facility if you need to wire InputTextMultiline() to a dynamic string type. See misc/cpp/imgui_stdlib.h for an example. (This is not demonstrated in imgui_demo.cpp because we don't want to include <string> in here)");
             ImGui::CheckboxFlags("ImGuiInputTextFlags_ReadOnly", (unsigned int*)&flags, ImGuiInputTextFlags_ReadOnly);
             ImGui::CheckboxFlags("ImGuiInputTextFlags_AllowTabInput", (unsigned int*)&flags, ImGuiInputTextFlags_AllowTabInput);
             ImGui::CheckboxFlags("ImGuiInputTextFlags_CtrlEnterForNewLine", (unsigned int*)&flags, ImGuiInputTextFlags_CtrlEnterForNewLine);
@@ -1024,8 +1050,9 @@ static void ShowDemoWindowWidgets()
 
         if (ImGui::TreeNode("Resize Callback"))
         {
-            // If you have a custom string type you would typically create a ImGui::InputText() wrapper than takes your type as input.
-            // See misc/cpp/imgui_stdlib.h and .cpp for an implementation of this using std::string.
+            // To wire InputText() with std::string or any other custom string type,
+            // you can use the ImGuiInputTextFlags_CallbackResize flag + create a custom ImGui::InputText() wrapper using your prefered type.
+            // See misc/cpp/imgui_stdlib.h for an implementation of this using std::string.
             HelpMarker("Demonstrate using ImGuiInputTextFlags_CallbackResize to wire your resizable string type to InputText().\n\nSee misc/cpp/imgui_stdlib.h for an implementation of this for std::string.");
             struct Funcs
             {
@@ -1075,7 +1102,7 @@ static void ShowDemoWindowWidgets()
 
         // Create a dummy array of contiguous float values to plot
         // Tip: If your float aren't contiguous but part of a structure, you can pass a pointer to your first float and the sizeof() of your structure in the Stride parameter.
-        static float values[90] = { 0 };
+        static float values[90] = {};
         static int values_offset = 0;
         static double refresh_time = 0.0;
         if (!animate || refresh_time == 0.0)
@@ -1176,7 +1203,7 @@ static void ShowDemoWindowWidgets()
 
         // Generate a dummy default palette. The palette will persist and can be edited.
         static bool saved_palette_init = true;
-        static ImVec4 saved_palette[32] = { };
+        static ImVec4 saved_palette[32] = {};
         if (saved_palette_init)
         {
             for (int n = 0; n < IM_ARRAYSIZE(saved_palette); n++)
@@ -1506,24 +1533,21 @@ static void ShowDemoWindowWidgets()
 
     if (ImGui::TreeNode("Drag and Drop"))
     {
+        if (ImGui::TreeNode("Drag and drop in standard widgets"))
         {
             // ColorEdit widgets automatically act as drag source and drag target.
             // They are using standardized payload strings IMGUI_PAYLOAD_TYPE_COLOR_3F and IMGUI_PAYLOAD_TYPE_COLOR_4F to allow your own widgets
             // to use colors in their drag and drop interaction. Also see the demo in Color Picker -> Palette demo.
-            ImGui::BulletText("Drag and drop in standard widgets");
-            ImGui::SameLine();
             HelpMarker("You can drag from the colored squares.");
-            ImGui::Indent();
-            static float col1[3] = { 1.0f,0.0f,0.2f };
-            static float col2[4] = { 0.4f,0.7f,0.0f,0.5f };
+            static float col1[3] = { 1.0f, 0.0f, 0.2f };
+            static float col2[4] = { 0.4f, 0.7f, 0.0f, 0.5f };
             ImGui::ColorEdit3("color 1", col1);
             ImGui::ColorEdit4("color 2", col2);
-            ImGui::Unindent();
+            ImGui::TreePop();
         }
 
+        if (ImGui::TreeNode("Drag and drop to copy/swap items"))
         {
-            ImGui::BulletText("Drag and drop to copy/swap items");
-            ImGui::Indent();
             enum Mode
             {
                 Mode_Copy,
@@ -1577,7 +1601,31 @@ static void ShowDemoWindowWidgets()
                 }
                 ImGui::PopID();
             }
-            ImGui::Unindent();
+            ImGui::TreePop();
+        }
+
+        if (ImGui::TreeNode("Drag to reorder items (simple)"))
+        {
+            // Simple reordering
+            HelpMarker("We don't use the drag and drop api at all here! Instead we query when the item is held but not hovered, and order items accordingly.");
+            static const char* item_names[] = { "Item One", "Item Two", "Item Three", "Item Four", "Item Five" };
+            for (int n = 0; n < IM_ARRAYSIZE(item_names); n++)
+            {
+                const char* item = item_names[n];
+                ImGui::Selectable(item);
+
+                if (ImGui::IsItemActive() && !ImGui::IsItemHovered())
+                {
+                    int n_next = n + (ImGui::GetMouseDragDelta(0).y < 0.f ? -1 : 1);
+                    if (n_next >= 0 && n_next < IM_ARRAYSIZE(item_names))
+                    {
+                        item_names[n] = item_names[n_next];
+                        item_names[n_next] = item;
+                        ImGui::ResetMouseDragDelta();
+                    }
+                }
+            }
+            ImGui::TreePop();
         }
 
         ImGui::TreePop();
@@ -1587,7 +1635,7 @@ static void ShowDemoWindowWidgets()
     {
         // Submit an item (various types available) so we can query their status in the following block.
         static int item_type = 1;
-        ImGui::Combo("Item Type", &item_type, "Text\0Button\0Button (w/ repeat)\0Checkbox\0SliderFloat\0InputText\0InputFloat\0InputFloat3\0ColorEdit4\0MenuItem\0TreeNode (w/ double-click)\0ListBox\0");
+        ImGui::Combo("Item Type", &item_type, "Text\0Button\0Button (w/ repeat)\0Checkbox\0SliderFloat\0InputText\0InputFloat\0InputFloat3\0ColorEdit4\0MenuItem\0TreeNode\0TreeNode (w/ double-click)\0ListBox\0", 20);
         ImGui::SameLine();
         HelpMarker("Testing how various types of items are interacting with the IsItemXXX functions.");
         bool ret = false;
@@ -1604,13 +1652,14 @@ static void ShowDemoWindowWidgets()
         if (item_type == 7) { ret = ImGui::InputFloat3("ITEM: InputFloat3", col4f); }                   // Testing multi-component items (IsItemXXX flags are reported merged)
         if (item_type == 8) { ret = ImGui::ColorEdit4("ITEM: ColorEdit4", col4f); }                     // Testing multi-component items (IsItemXXX flags are reported merged)
         if (item_type == 9) { ret = ImGui::MenuItem("ITEM: MenuItem"); }                                // Testing menu item (they use ImGuiButtonFlags_PressedOnRelease button policy)
-        if (item_type == 10){ ret = ImGui::TreeNodeEx("ITEM: TreeNode w/ ImGuiTreeNodeFlags_OpenOnDoubleClick", ImGuiTreeNodeFlags_OpenOnDoubleClick | ImGuiTreeNodeFlags_NoTreePushOnOpen); } // Testing tree node with ImGuiButtonFlags_PressedOnDoubleClick button policy.
-        if (item_type == 11){ const char* items[] = { "Apple", "Banana", "Cherry", "Kiwi" }; static int current = 1; ret = ImGui::ListBox("ITEM: ListBox", &current, items, IM_ARRAYSIZE(items), IM_ARRAYSIZE(items)); }
+        if (item_type == 10){ ret = ImGui::TreeNode("ITEM: TreeNode"); if (ret) ImGui::TreePop(); }     // Testing tree node
+        if (item_type == 11){ ret = ImGui::TreeNodeEx("ITEM: TreeNode w/ ImGuiTreeNodeFlags_OpenOnDoubleClick", ImGuiTreeNodeFlags_OpenOnDoubleClick | ImGuiTreeNodeFlags_NoTreePushOnOpen); } // Testing tree node with ImGuiButtonFlags_PressedOnDoubleClick button policy.
+        if (item_type == 12){ const char* items[] = { "Apple", "Banana", "Cherry", "Kiwi" }; static int current = 1; ret = ImGui::ListBox("ITEM: ListBox", &current, items, IM_ARRAYSIZE(items), IM_ARRAYSIZE(items)); }
 
-        // Display the value of IsItemHovered() and other common item state functions. 
+        // Display the value of IsItemHovered() and other common item state functions.
         // Note that the ImGuiHoveredFlags_XXX flags can be combined.
-        // Because BulletText is an item itself and that would affect the output of IsItemXXX functions, 
-        // we query every state in a single call to avoid storing them and to simplify the code 
+        // Because BulletText is an item itself and that would affect the output of IsItemXXX functions,
+        // we query every state in a single call to avoid storing them and to simplify the code
         ImGui::BulletText(
             "Return value = %d\n"
             "IsItemFocused() = %d\n"
@@ -1626,6 +1675,7 @@ static void ShowDemoWindowWidgets()
             "IsItemDeactivatedAfterEdit() = %d\n"
             "IsItemVisible() = %d\n"
             "IsItemClicked() = %d\n"
+            "IsItemToggledOpen() = %d\n"
             "GetItemRectMin() = (%.1f, %.1f)\n"
             "GetItemRectMax() = (%.1f, %.1f)\n"
             "GetItemRectSize() = (%.1f, %.1f)",
@@ -1643,6 +1693,7 @@ static void ShowDemoWindowWidgets()
             ImGui::IsItemDeactivatedAfterEdit(),
             ImGui::IsItemVisible(),
             ImGui::IsItemClicked(),
+            ImGui::IsItemToggledOpen(),
             ImGui::GetItemRectMin().x, ImGui::GetItemRectMin().y,
             ImGui::GetItemRectMax().x, ImGui::GetItemRectMax().y,
             ImGui::GetItemRectSize().x, ImGui::GetItemRectSize().y
@@ -1653,7 +1704,7 @@ static void ShowDemoWindowWidgets()
         if (embed_all_inside_a_child_window)
             ImGui::BeginChild("outer_child", ImVec2(0, ImGui::GetFontSize() * 20), true);
 
-        // Testing IsWindowFocused() function with its various flags. 
+        // Testing IsWindowFocused() function with its various flags.
         // Note that the ImGuiFocusedFlags_XXX flags can be combined.
         ImGui::BulletText(
             "IsWindowFocused() = %d\n"
@@ -1741,7 +1792,7 @@ static void ShowDemoWindowLayout()
         // Child 1: no border, enable horizontal scrollbar
         {
             ImGuiWindowFlags window_flags = ImGuiWindowFlags_HorizontalScrollbar | (disable_mouse_wheel ? ImGuiWindowFlags_NoScrollWithMouse : 0);
-            ImGui::BeginChild("Child1", ImVec2(ImGui::GetWindowContentRegionWidth() * 0.5f, 260), false, window_flags);
+            ImGui::BeginChild("ChildL", ImVec2(ImGui::GetWindowContentRegionWidth() * 0.5f, 260), false, window_flags);
             for (int i = 0; i < 100; i++)
             {
                 ImGui::Text("%04d: scrollable region", i);
@@ -1759,7 +1810,7 @@ static void ShowDemoWindowLayout()
         {
             ImGuiWindowFlags window_flags = (disable_mouse_wheel ? ImGuiWindowFlags_NoScrollWithMouse : 0) | (disable_menu ? 0 : ImGuiWindowFlags_MenuBar);
             ImGui::PushStyleVar(ImGuiStyleVar_ChildRounding, 5.0f);
-            ImGui::BeginChild("Child2", ImVec2(0, 260), true, window_flags);
+            ImGui::BeginChild("ChildR", ImVec2(0, 260), true, window_flags);
             if (!disable_menu && ImGui::BeginMenuBar())
             {
                 if (ImGui::BeginMenu("Menu"))
@@ -1792,7 +1843,7 @@ static void ShowDemoWindowLayout()
         {
             ImGui::SetCursorPosX(ImGui::GetCursorPosX() + 10);
             ImGui::PushStyleColor(ImGuiCol_ChildBg, IM_COL32(255, 0, 0, 100));
-            ImGui::BeginChild("blah", ImVec2(200, 100), true, ImGuiWindowFlags_None);
+            ImGui::BeginChild("Red", ImVec2(200, 100), true, ImGuiWindowFlags_None);
             for (int n = 0; n < 50; n++)
                 ImGui::Text("Some test %d", n);
             ImGui::EndChild();
@@ -1986,7 +2037,7 @@ static void ShowDemoWindowLayout()
             if (ImGui::BeginTabBar("MyTabBar", tab_bar_flags))
             {
                 for (int n = 0; n < IM_ARRAYSIZE(opened); n++)
-                    if (opened[n] && ImGui::BeginTabItem(names[n], &opened[n]))
+                    if (opened[n] && ImGui::BeginTabItem(names[n], &opened[n], ImGuiTabItemFlags_None))
                     {
                         ImGui::Text("This is the %s tab!", names[n]);
                         if (n & 1)
@@ -2047,55 +2098,99 @@ static void ShowDemoWindowLayout()
 
     if (ImGui::TreeNode("Text Baseline Alignment"))
     {
-        HelpMarker("This is testing the vertical alignment that gets applied on text to keep it aligned with widgets. Lines only composed of text or \"small\" widgets fit in less vertical spaces than lines with normal widgets.");
+        {
+            ImGui::BulletText("Text baseline:");
+            ImGui::SameLine();
+            HelpMarker("This is testing the vertical alignment that gets applied on text to keep it aligned with widgets. Lines only composed of text or \"small\" widgets fit in less vertical spaces than lines with normal widgets.");
+            ImGui::Indent();
 
-        ImGui::Text("One\nTwo\nThree"); ImGui::SameLine();
-        ImGui::Text("Hello\nWorld"); ImGui::SameLine();
-        ImGui::Text("Banana");
+            ImGui::Text("KO Blahblah"); ImGui::SameLine();
+            ImGui::Button("Some framed item"); ImGui::SameLine();
+            HelpMarker("Baseline of button will look misaligned with text..");
 
-        ImGui::Text("Banana"); ImGui::SameLine();
-        ImGui::Text("Hello\nWorld"); ImGui::SameLine();
-        ImGui::Text("One\nTwo\nThree");
+            // If your line starts with text, call AlignTextToFramePadding() to align text to upcoming widgets.
+            // Because we don't know what's coming after the Text() statement, we need to move the text baseline down by FramePadding.y
+            ImGui::AlignTextToFramePadding();
+            ImGui::Text("OK Blahblah"); ImGui::SameLine();
+            ImGui::Button("Some framed item"); ImGui::SameLine();
+            HelpMarker("We call AlignTextToFramePadding() to vertically align the text baseline by +FramePadding.y");
 
-        ImGui::Button("HOP##1"); ImGui::SameLine();
-        ImGui::Text("Banana"); ImGui::SameLine();
-        ImGui::Text("Hello\nWorld"); ImGui::SameLine();
-        ImGui::Text("Banana");
+            // SmallButton() uses the same vertical padding as Text
+            ImGui::Button("TEST##1"); ImGui::SameLine();
+            ImGui::Text("TEST"); ImGui::SameLine();
+            ImGui::SmallButton("TEST##2");
 
-        ImGui::Button("HOP##2"); ImGui::SameLine();
-        ImGui::Text("Hello\nWorld"); ImGui::SameLine();
-        ImGui::Text("Banana");
+            // If your line starts with text, call AlignTextToFramePadding() to align text to upcoming widgets.
+            ImGui::AlignTextToFramePadding();
+            ImGui::Text("Text aligned to framed item"); ImGui::SameLine();
+            ImGui::Button("Item##1"); ImGui::SameLine();
+            ImGui::Text("Item"); ImGui::SameLine();
+            ImGui::SmallButton("Item##2"); ImGui::SameLine();
+            ImGui::Button("Item##3");
 
-        ImGui::Button("TEST##1"); ImGui::SameLine();
-        ImGui::Text("TEST"); ImGui::SameLine();
-        ImGui::SmallButton("TEST##2");
+            ImGui::Unindent();
+        }
 
-        ImGui::AlignTextToFramePadding(); // If your line starts with text, call this to align it to upcoming widgets.
-        ImGui::Text("Text aligned to Widget"); ImGui::SameLine();
-        ImGui::Button("Widget##1"); ImGui::SameLine();
-        ImGui::Text("Widget"); ImGui::SameLine();
-        ImGui::SmallButton("Widget##2"); ImGui::SameLine();
-        ImGui::Button("Widget##3");
+        ImGui::Spacing();
 
-        // Tree
-        const float spacing = ImGui::GetStyle().ItemInnerSpacing.x;
-        ImGui::Button("Button##1");
-        ImGui::SameLine(0.0f, spacing);
-        if (ImGui::TreeNode("Node##1")) { for (int i = 0; i < 6; i++) ImGui::BulletText("Item %d..", i); ImGui::TreePop(); }    // Dummy tree data
+        {
+            ImGui::BulletText("Multi-line text:");
+            ImGui::Indent();
+            ImGui::Text("One\nTwo\nThree"); ImGui::SameLine();
+            ImGui::Text("Hello\nWorld"); ImGui::SameLine();
+            ImGui::Text("Banana");
 
-        ImGui::AlignTextToFramePadding();         // Vertically align text node a bit lower so it'll be vertically centered with upcoming widget. Otherwise you can use SmallButton (smaller fit).
-        bool node_open = ImGui::TreeNode("Node##2");  // Common mistake to avoid: if we want to SameLine after TreeNode we need to do it before we add child content.
-        ImGui::SameLine(0.0f, spacing); ImGui::Button("Button##2");
-        if (node_open) { for (int i = 0; i < 6; i++) ImGui::BulletText("Item %d..", i); ImGui::TreePop(); }   // Dummy tree data
+            ImGui::Text("Banana"); ImGui::SameLine();
+            ImGui::Text("Hello\nWorld"); ImGui::SameLine();
+            ImGui::Text("One\nTwo\nThree");
 
-        // Bullet
-        ImGui::Button("Button##3");
-        ImGui::SameLine(0.0f, spacing);
-        ImGui::BulletText("Bullet text");
+            ImGui::Button("HOP##1"); ImGui::SameLine();
+            ImGui::Text("Banana"); ImGui::SameLine();
+            ImGui::Text("Hello\nWorld"); ImGui::SameLine();
+            ImGui::Text("Banana");
 
-        ImGui::AlignTextToFramePadding();
-        ImGui::BulletText("Node");
-        ImGui::SameLine(0.0f, spacing); ImGui::Button("Button##4");
+            ImGui::Button("HOP##2"); ImGui::SameLine();
+            ImGui::Text("Hello\nWorld"); ImGui::SameLine();
+            ImGui::Text("Banana");
+            ImGui::Unindent();
+        }
+
+        ImGui::Spacing();
+
+        {
+            ImGui::BulletText("Misc items:");
+            ImGui::Indent();
+
+            // SmallButton() sets FramePadding to zero. Text baseline is aligned to match baseline of previous Button
+            ImGui::Button("80x80", ImVec2(80, 80));
+            ImGui::SameLine();
+            ImGui::Button("50x50", ImVec2(50, 50));
+            ImGui::SameLine();
+            ImGui::Button("Button()");
+            ImGui::SameLine();
+            ImGui::SmallButton("SmallButton()");
+
+            // Tree
+            const float spacing = ImGui::GetStyle().ItemInnerSpacing.x;
+            ImGui::Button("Button##1");
+            ImGui::SameLine(0.0f, spacing);
+            if (ImGui::TreeNode("Node##1")) { for (int i = 0; i < 6; i++) ImGui::BulletText("Item %d..", i); ImGui::TreePop(); }    // Dummy tree data
+
+            ImGui::AlignTextToFramePadding();           // Vertically align text node a bit lower so it'll be vertically centered with upcoming widget. Otherwise you can use SmallButton (smaller fit).
+            bool node_open = ImGui::TreeNode("Node##2");// Common mistake to avoid: if we want to SameLine after TreeNode we need to do it before we add child content.
+            ImGui::SameLine(0.0f, spacing); ImGui::Button("Button##2");
+            if (node_open) { for (int i = 0; i < 6; i++) ImGui::BulletText("Item %d..", i); ImGui::TreePop(); }   // Dummy tree data
+
+            // Bullet
+            ImGui::Button("Button##3");
+            ImGui::SameLine(0.0f, spacing);
+            ImGui::BulletText("Bullet text");
+
+            ImGui::AlignTextToFramePadding();
+            ImGui::BulletText("Node");
+            ImGui::SameLine(0.0f, spacing); ImGui::Button("Button##4");
+            ImGui::Unindent();
+        }
 
         ImGui::TreePop();
     }
@@ -2120,10 +2215,10 @@ static void ShowDemoWindowLayout()
         ImGui::SameLine(140); enable_track |= ImGui::DragInt("##item", &track_item, 0.25f, 0, 99, "Item = %d");
 
         bool scroll_to_off = ImGui::Button("Scroll Offset");
-        ImGui::SameLine(140); scroll_to_off |= ImGui::DragFloat("##off", &scroll_to_off_px, 1.00f, 0, 9999, "+%.0f px");
+        ImGui::SameLine(140); scroll_to_off |= ImGui::DragFloat("##off", &scroll_to_off_px, 1.00f, 0, FLT_MAX, "+%.0f px");
 
         bool scroll_to_pos = ImGui::Button("Scroll To Pos");
-        ImGui::SameLine(140); scroll_to_pos |= ImGui::DragFloat("##pos", &scroll_to_pos_px, 1.00f, -10, 9999, "X/Y = %.0f px");
+        ImGui::SameLine(140); scroll_to_pos |= ImGui::DragFloat("##pos", &scroll_to_pos_px, 1.00f, -10, FLT_MAX, "X/Y = %.0f px");
         ImGui::PopItemWidth();
 
         if (scroll_to_off || scroll_to_pos)
@@ -2142,7 +2237,7 @@ static void ShowDemoWindowLayout()
             ImGui::TextUnformatted(names[i]);
 
             ImGuiWindowFlags child_flags = enable_extra_decorations ? ImGuiWindowFlags_MenuBar : 0;
-            ImGui::BeginChild(ImGui::GetID((void*)(intptr_t)i), ImVec2(child_w, 200.0f), true, child_flags);
+            bool window_visible = ImGui::BeginChild(ImGui::GetID((void*)(intptr_t)i), ImVec2(child_w, 200.0f), true, child_flags);
             if (ImGui::BeginMenuBar())
             {
                 ImGui::TextUnformatted("abc");
@@ -2152,16 +2247,19 @@ static void ShowDemoWindowLayout()
                 ImGui::SetScrollY(scroll_to_off_px);
             if (scroll_to_pos)
                 ImGui::SetScrollFromPosY(ImGui::GetCursorStartPos().y + scroll_to_pos_px, i * 0.25f);
-            for (int item = 0; item < 100; item++)
+            if (window_visible) // Avoid calling SetScrollHereY when running with culled items
             {
-                if (enable_track && item == track_item)
+                for (int item = 0; item < 100; item++)
                 {
-                    ImGui::TextColored(ImVec4(1,1,0,1), "Item %d", item);
-                    ImGui::SetScrollHereY(i * 0.25f); // 0.0f:top, 0.5f:center, 1.0f:bottom
-                }
-                else
-                {
-                    ImGui::Text("Item %d", item);
+                    if (enable_track && item == track_item)
+                    {
+                        ImGui::TextColored(ImVec4(1, 1, 0, 1), "Item %d", item);
+                        ImGui::SetScrollHereY(i * 0.25f); // 0.0f:top, 0.5f:center, 1.0f:bottom
+                    }
+                    else
+                    {
+                        ImGui::Text("Item %d", item);
+                    }
                 }
             }
             float scroll_y = ImGui::GetScrollY();
@@ -2180,23 +2278,26 @@ static void ShowDemoWindowLayout()
         {
             float child_height = ImGui::GetTextLineHeight() + style.ScrollbarSize + style.WindowPadding.y * 2.0f;
             ImGuiWindowFlags child_flags = ImGuiWindowFlags_HorizontalScrollbar | (enable_extra_decorations ? ImGuiWindowFlags_AlwaysVerticalScrollbar : 0);
-            ImGui::BeginChild(ImGui::GetID((void*)(intptr_t)i), ImVec2(-100, child_height), true, child_flags);
+            bool window_visible = ImGui::BeginChild(ImGui::GetID((void*)(intptr_t)i), ImVec2(-100, child_height), true, child_flags);
             if (scroll_to_off)
                 ImGui::SetScrollX(scroll_to_off_px);
             if (scroll_to_pos)
                 ImGui::SetScrollFromPosX(ImGui::GetCursorStartPos().x + scroll_to_pos_px, i * 0.25f);
-            for (int item = 0; item < 100; item++)
+            if (window_visible) // Avoid calling SetScrollHereY when running with culled items
             {
-                if (enable_track && item == track_item)
+                for (int item = 0; item < 100; item++)
                 {
-                    ImGui::TextColored(ImVec4(1, 1, 0, 1), "Item %d", item);
-                    ImGui::SetScrollHereX(i * 0.25f); // 0.0f:left, 0.5f:center, 1.0f:right
+                    if (enable_track && item == track_item)
+                    {
+                        ImGui::TextColored(ImVec4(1, 1, 0, 1), "Item %d", item);
+                        ImGui::SetScrollHereX(i * 0.25f); // 0.0f:left, 0.5f:center, 1.0f:right
+                    }
+                    else
+                    {
+                        ImGui::Text("Item %d", item);
+                    }
+                    ImGui::SameLine();
                 }
-                else
-                {
-                    ImGui::Text("Item %d", item);
-                }
-                ImGui::SameLine();
             }
             float scroll_x = ImGui::GetScrollX();
             float scroll_max_x = ImGui::GetScrollMaxX();
@@ -2354,7 +2455,7 @@ static void ShowDemoWindowLayout()
         ImVec2 pos = ImGui::GetCursorScreenPos();
         ImVec4 clip_rect(pos.x, pos.y, pos.x + size.x, pos.y + size.y);
         ImGui::InvisibleButton("##dummy", size);
-        if (ImGui::IsItemActive() && ImGui::IsMouseDragging()) { offset.x += ImGui::GetIO().MouseDelta.x; offset.y += ImGui::GetIO().MouseDelta.y; }
+        if (ImGui::IsItemActive() && ImGui::IsMouseDragging(0)) { offset.x += ImGui::GetIO().MouseDelta.x; offset.y += ImGui::GetIO().MouseDelta.y; }
         ImGui::GetWindowDrawList()->AddRectFilled(pos, ImVec2(pos.x + size.x, pos.y + size.y), IM_COL32(90, 90, 120, 255));
         ImGui::GetWindowDrawList()->AddText(ImGui::GetFont(), ImGui::GetFontSize()*2.0f, ImVec2(pos.x + offset.x, pos.y + offset.y), IM_COL32(255, 255, 255, 255), "Line 1 hello\nLine 2 clip me!", NULL, 0.0f, &clip_rect);
         ImGui::TreePop();
@@ -2960,7 +3061,7 @@ static void ShowDemoWindowMisc()
 
         if (ImGui::TreeNode("Mouse cursors"))
         {
-            const char* mouse_cursors_names[] = { "Arrow", "TextInput", "Move", "ResizeNS", "ResizeEW", "ResizeNESW", "ResizeNWSE", "Hand" };
+            const char* mouse_cursors_names[] = { "Arrow", "TextInput", "ResizeAll", "ResizeNS", "ResizeEW", "ResizeNESW", "ResizeNWSE", "Hand", "NotAllowed" };
             IM_ASSERT(IM_ARRAYSIZE(mouse_cursors_names) == ImGuiMouseCursor_COUNT);
 
             ImGui::Text("Current mouse cursor = %d: %s", ImGui::GetMouseCursor(), mouse_cursors_names[ImGui::GetMouseCursor()]);
@@ -3027,11 +3128,17 @@ void ImGui::ShowAboutWindow(bool* p_open)
 #ifdef IMGUI_DISABLE_WIN32_FUNCTIONS
         ImGui::Text("define: IMGUI_DISABLE_WIN32_FUNCTIONS");
 #endif
-#ifdef IMGUI_DISABLE_FORMAT_STRING_FUNCTIONS
-        ImGui::Text("define: IMGUI_DISABLE_FORMAT_STRING_FUNCTIONS");
+#ifdef IMGUI_DISABLE_DEFAULT_FORMAT_FUNCTIONS
+        ImGui::Text("define: IMGUI_DISABLE_DEFAULT_FORMAT_FUNCTIONS");
 #endif
-#ifdef IMGUI_DISABLE_MATH_FUNCTIONS
-        ImGui::Text("define: IMGUI_DISABLE_MATH_FUNCTIONS");
+#ifdef IMGUI_DISABLE_DEFAULT_MATH_FUNCTIONS
+        ImGui::Text("define: IMGUI_DISABLE_DEFAULT_MATH_FUNCTIONS");
+#endif
+#ifdef IMGUI_DISABLE_DEFAULT_FILE_FUNCTIONS
+        ImGui::Text("define: IMGUI_DISABLE_DEFAULT_FILE_FUNCTIONS");
+#endif
+#ifdef IMGUI_DISABLE_FILE_FUNCTIONS
+        ImGui::Text("define: IMGUI_DISABLE_FILE_FUNCTIONS");
 #endif
 #ifdef IMGUI_DISABLE_DEFAULT_ALLOCATORS
         ImGui::Text("define: IMGUI_DISABLE_DEFAULT_ALLOCATORS");
@@ -3158,7 +3265,7 @@ void ImGui::ShowFontSelector(const char* label)
     HelpMarker(
         "- Load additional fonts with io.Fonts->AddFontFromFileTTF().\n"
         "- The font atlas is built when calling io.Fonts->GetTexDataAsXXXX() or io.Fonts->Build().\n"
-        "- Read FAQ and documentation in misc/fonts/ for more details.\n"
+        "- Read FAQ and docs/FONTS.txt for more details.\n"
         "- If you need to add/remove fonts at runtime (e.g. for DPI change), do it before calling NewFrame().");
 }
 
@@ -3198,7 +3305,7 @@ void ImGui::ShowStyleEditor(ImGuiStyle* ref)
     if (ImGui::Button("Revert Ref"))
         style = *ref;
     ImGui::SameLine();
-    HelpMarker("Save/Revert in local non-persistent storage. Default Colors definition are not affected. Use \"Export Colors\" below to save them somewhere.");
+    HelpMarker("Save/Revert in local non-persistent storage. Default Colors definition are not affected. Use \"Export\" below to save them somewhere.");
 
     ImGui::Separator();
 
@@ -3246,7 +3353,7 @@ void ImGui::ShowStyleEditor(ImGuiStyle* ref)
         {
             static int output_dest = 0;
             static bool output_only_modified = true;
-            if (ImGui::Button("Export Unsaved"))
+            if (ImGui::Button("Export"))
             {
                 if (output_dest == 0)
                     ImGui::LogToClipboard();
@@ -3269,9 +3376,9 @@ void ImGui::ShowStyleEditor(ImGuiStyle* ref)
             filter.Draw("Filter colors", ImGui::GetFontSize() * 16);
 
             static ImGuiColorEditFlags alpha_flags = 0;
-            ImGui::RadioButton("Opaque", &alpha_flags, 0); ImGui::SameLine();
-            ImGui::RadioButton("Alpha", &alpha_flags, ImGuiColorEditFlags_AlphaPreview); ImGui::SameLine();
-            ImGui::RadioButton("Both", &alpha_flags, ImGuiColorEditFlags_AlphaPreviewHalf); ImGui::SameLine();
+            if (ImGui::RadioButton("Opaque", alpha_flags == 0))                                     { alpha_flags = 0; } ImGui::SameLine();
+            if (ImGui::RadioButton("Alpha",  alpha_flags == ImGuiColorEditFlags_AlphaPreview))      { alpha_flags = ImGuiColorEditFlags_AlphaPreview; } ImGui::SameLine();
+            if (ImGui::RadioButton("Both",   alpha_flags == ImGuiColorEditFlags_AlphaPreviewHalf))  { alpha_flags = ImGuiColorEditFlags_AlphaPreviewHalf; } ImGui::SameLine();
             HelpMarker("In the color list:\nLeft-click on colored square to open color picker,\nRight-click to open edit options menu.");
 
             ImGui::BeginChild("##colors", ImVec2(0, 0), true, ImGuiWindowFlags_AlwaysVerticalScrollbar | ImGuiWindowFlags_AlwaysHorizontalScrollbar | ImGuiWindowFlags_NavFlattened);
@@ -3286,7 +3393,7 @@ void ImGui::ShowStyleEditor(ImGuiStyle* ref)
                 if (memcmp(&style.Colors[i], &ref->Colors[i], sizeof(ImVec4)) != 0)
                 {
                     // Tips: in a real user application, you may want to merge and use an icon font into the main font, so instead of "Save"/"Revert" you'd use icons.
-                    // Read the FAQ and misc/fonts/README.txt about using icon fonts. It's really easy and super convenient!
+                    // Read the FAQ and docs/FONTS.txt about using icon fonts. It's really easy and super convenient!
                     ImGui::SameLine(0.0f, style.ItemInnerSpacing.x); if (ImGui::Button("Save")) ref->Colors[i] = style.Colors[i];
                     ImGui::SameLine(0.0f, style.ItemInnerSpacing.x); if (ImGui::Button("Revert")) style.Colors[i] = ref->Colors[i];
                 }
@@ -3304,7 +3411,7 @@ void ImGui::ShowStyleEditor(ImGuiStyle* ref)
         {
             ImGuiIO& io = ImGui::GetIO();
             ImFontAtlas* atlas = io.Fonts;
-            HelpMarker("Read FAQ and misc/fonts/README.txt for details on font loading.");
+            HelpMarker("Read FAQ and docs/FONTS.txt for details on font loading.");
             ImGui::PushItemWidth(120);
             for (int i = 0; i < atlas->Fonts.Size; i++)
             {
@@ -3324,17 +3431,18 @@ void ImGui::ShowStyleEditor(ImGuiStyle* ref)
                     ImGui::Text("Fallback character: '%c' (U+%04X)", font->FallbackChar, font->FallbackChar);
                     ImGui::Text("Ellipsis character: '%c' (U+%04X)", font->EllipsisChar, font->EllipsisChar);
                     const float surface_sqrt = sqrtf((float)font->MetricsTotalSurface);
-                    ImGui::Text("Texture surface: %d pixels (approx) ~ %dx%d", font->MetricsTotalSurface, (int)surface_sqrt, (int)surface_sqrt);
+                    ImGui::Text("Texture Area: about %d px ~%dx%d px", font->MetricsTotalSurface, (int)surface_sqrt, (int)surface_sqrt);
                     for (int config_i = 0; config_i < font->ConfigDataCount; config_i++)
-                        if (const ImFontConfig* cfg = &font->ConfigData[config_i])
-                            ImGui::BulletText("Input %d: \'%s\', Oversample: (%d,%d), PixelSnapH: %d", config_i, cfg->Name, cfg->OversampleH, cfg->OversampleV, cfg->PixelSnapH);
+                        if (font->ConfigData)
+                            if (const ImFontConfig* cfg = &font->ConfigData[config_i])
+                                ImGui::BulletText("Input %d: \'%s\', Oversample: (%d,%d), PixelSnapH: %d", config_i, cfg->Name, cfg->OversampleH, cfg->OversampleV, cfg->PixelSnapH);
                     if (ImGui::TreeNode("Glyphs", "Glyphs (%d)", font->Glyphs.Size))
                     {
                         // Display all glyphs of the fonts in separate pages of 256 characters
-                        for (int base = 0; base < 0x10000; base += 256)
+                        for (unsigned int base = 0; base <= IM_UNICODE_CODEPOINT_MAX; base += 256)
                         {
                             int count = 0;
-                            for (int n = 0; n < 256; n++)
+                            for (unsigned int n = 0; n < 256; n++)
                                 count += font->FindGlyphNoFallback((ImWchar)(base + n)) ? 1 : 0;
                             if (count > 0 && ImGui::TreeNode((void*)(intptr_t)base, "U+%04X..U+%04X (%d %s)", base, base + 255, count, count > 1 ? "glyphs" : "glyph"))
                             {
@@ -3342,7 +3450,7 @@ void ImGui::ShowStyleEditor(ImGuiStyle* ref)
                                 float cell_spacing = style.ItemSpacing.y;
                                 ImVec2 base_pos = ImGui::GetCursorScreenPos();
                                 ImDrawList* draw_list = ImGui::GetWindowDrawList();
-                                for (int n = 0; n < 256; n++)
+                                for (unsigned int n = 0; n < 256; n++)
                                 {
                                     ImVec2 cell_p1(base_pos.x + (n % 16) * (cell_size + cell_spacing), base_pos.y + (n / 16) * (cell_size + cell_spacing));
                                     ImVec2 cell_p2(cell_p1.x + cell_size, cell_p1.y + cell_size);
@@ -3394,8 +3502,9 @@ void ImGui::ShowStyleEditor(ImGuiStyle* ref)
             ImGui::Checkbox("Anti-aliased lines", &style.AntiAliasedLines); ImGui::SameLine(); HelpMarker("When disabling anti-aliasing lines, you'll probably want to disable borders in your style as well.");
             ImGui::Checkbox("Anti-aliased fill", &style.AntiAliasedFill);
             ImGui::PushItemWidth(100);
-            ImGui::DragFloat("Curve Tessellation Tolerance", &style.CurveTessellationTol, 0.02f, 0.10f, FLT_MAX, "%.2f", 2.0f);
+            ImGui::DragFloat("Curve Tessellation Tolerance", &style.CurveTessellationTol, 0.02f, 0.10f, 10.0f, "%.2f");
             if (style.CurveTessellationTol < 0.10f) style.CurveTessellationTol = 0.10f;
+            ImGui::DragFloat("Circle segment Max Error", &style.CircleSegmentMaxError, 0.01f, 0.10f, 10.0f, "%.2f");
             ImGui::DragFloat("Global Alpha", &style.Alpha, 0.005f, 0.20f, 1.0f, "%.2f"); // Not exposing zero here so user doesn't "lose" the UI (zero alpha clips all widgets). But application code could have a toggle to switch between zero and non-zero.
             ImGui::PopItemWidth();
 
@@ -4347,23 +4456,34 @@ static void ShowExampleAppCustomRendering(bool* p_open)
         {
             static float sz = 36.0f;
             static float thickness = 3.0f;
+            static int ngon_sides = 6;
+            static bool circle_segments_override = false;
+            static int circle_segments_override_v = 12;
             static ImVec4 colf = ImVec4(1.0f, 1.0f, 0.4f, 1.0f);
+            ImGui::PushItemWidth(-ImGui::GetFontSize() * 10);
             ImGui::DragFloat("Size", &sz, 0.2f, 2.0f, 72.0f, "%.0f");
             ImGui::DragFloat("Thickness", &thickness, 0.05f, 1.0f, 8.0f, "%.02f");
+            ImGui::SliderInt("N-gon sides", &ngon_sides, 3, 12);
+            ImGui::Checkbox("##circlesegmentoverride", &circle_segments_override);
+            ImGui::SameLine(0.0f, ImGui::GetStyle().ItemInnerSpacing.x);
+            if (ImGui::SliderInt("Circle segments", &circle_segments_override_v, 3, 40))
+                circle_segments_override = true;
             ImGui::ColorEdit4("Color", &colf.x);
+            ImGui::PopItemWidth();
             const ImVec2 p = ImGui::GetCursorScreenPos();
             const ImU32 col = ImColor(colf);
+            const float spacing = 10.0f;
+            const ImDrawCornerFlags corners_none = 0;
+            const ImDrawCornerFlags corners_all = ImDrawCornerFlags_All;
+            const ImDrawCornerFlags corners_tl_br = ImDrawCornerFlags_TopLeft | ImDrawCornerFlags_BotRight;
+            const int circle_segments = circle_segments_override ? circle_segments_override_v : 0;
             float x = p.x + 4.0f, y = p.y + 4.0f;
-            float spacing = 10.0f;
-            ImDrawCornerFlags corners_none = 0;
-            ImDrawCornerFlags corners_all = ImDrawCornerFlags_All;
-            ImDrawCornerFlags corners_tl_br = ImDrawCornerFlags_TopLeft | ImDrawCornerFlags_BotRight;
             for (int n = 0; n < 2; n++)
             {
                 // First line uses a thickness of 1.0f, second line uses the configurable thickness
                 float th = (n == 0) ? 1.0f : thickness;
-                draw_list->AddCircle(ImVec2(x + sz*0.5f, y + sz*0.5f), sz*0.5f, col, 6, th);                x += sz + spacing;  // Hexagon
-                draw_list->AddCircle(ImVec2(x + sz*0.5f, y + sz*0.5f), sz*0.5f, col, 20, th);               x += sz + spacing;  // Circle
+                draw_list->AddNgon(ImVec2(x + sz*0.5f, y + sz*0.5f), sz*0.5f, col, ngon_sides, th);         x += sz + spacing;  // N-gon
+                draw_list->AddCircle(ImVec2(x + sz*0.5f, y + sz*0.5f), sz*0.5f, col, circle_segments, th);  x += sz + spacing;  // Circle
                 draw_list->AddRect(ImVec2(x, y), ImVec2(x + sz, y + sz), col, 0.0f,  corners_none, th);     x += sz + spacing;  // Square
                 draw_list->AddRect(ImVec2(x, y), ImVec2(x + sz, y + sz), col, 10.0f, corners_all, th);      x += sz + spacing;  // Square with all rounded corners
                 draw_list->AddRect(ImVec2(x, y), ImVec2(x + sz, y + sz), col, 10.0f, corners_tl_br, th);    x += sz + spacing;  // Square with two rounded corners
@@ -4376,8 +4496,8 @@ static void ShowExampleAppCustomRendering(bool* p_open)
                 x = p.x + 4;
                 y += sz + spacing;
             }
-            draw_list->AddCircleFilled(ImVec2(x + sz*0.5f, y + sz*0.5f), sz*0.5f, col, 6);              x += sz + spacing;  // Hexagon
-            draw_list->AddCircleFilled(ImVec2(x + sz*0.5f, y + sz*0.5f), sz*0.5f, col, 32);             x += sz + spacing;  // Circle
+            draw_list->AddNgonFilled(ImVec2(x + sz * 0.5f, y + sz * 0.5f), sz*0.5f, col, ngon_sides);   x += sz + spacing;  // N-gon
+            draw_list->AddCircleFilled(ImVec2(x + sz*0.5f, y + sz*0.5f), sz*0.5f, col, circle_segments);x += sz + spacing;  // Circle
             draw_list->AddRectFilled(ImVec2(x, y), ImVec2(x + sz, y + sz), col);                        x += sz + spacing;  // Square
             draw_list->AddRectFilled(ImVec2(x, y), ImVec2(x + sz, y + sz), col, 10.0f);                 x += sz + spacing;  // Square with all rounded corners
             draw_list->AddRectFilled(ImVec2(x, y), ImVec2(x + sz, y + sz), col, 10.0f, corners_tl_br);  x += sz + spacing;  // Square with two rounded corners
@@ -4567,7 +4687,8 @@ void ShowExampleAppDocuments(bool* p_open)
     static bool opt_reorderable = true;
     static ImGuiTabBarFlags opt_fitting_flags = ImGuiTabBarFlags_FittingPolicyDefault_;
 
-    if (!ImGui::Begin("Example: Documents", p_open, ImGuiWindowFlags_MenuBar))
+    bool window_contents_visible = ImGui::Begin("Example: Documents", p_open, ImGuiWindowFlags_MenuBar);
+    if (!window_contents_visible)
     {
         ImGui::End();
         return;
@@ -4747,3 +4868,5 @@ void ImGui::ShowUserGuide() {}
 void ImGui::ShowStyleEditor(ImGuiStyle*) {}
 
 #endif
+
+#endif // #ifndef IMGUI_DISABLE

imgui_draw.cpp

@@ -1,4 +1,4 @@
-// dear imgui, v1.73
+// dear imgui, v1.75
 // (drawing and font code)
 
 /*
@@ -27,6 +27,8 @@ Index of this file:
 #endif
 
 #include "imgui.h"
+#ifndef IMGUI_DISABLE
+
 #ifndef IMGUI_DEFINE_MATH_OPERATORS
 #define IMGUI_DEFINE_MATH_OPERATORS
 #endif
@@ -348,15 +350,30 @@ ImDrawListSharedData::ImDrawListSharedData()
     Font = NULL;
     FontSize = 0.0f;
     CurveTessellationTol = 0.0f;
+    CircleSegmentMaxError = 0.0f;
     ClipRectFullscreen = ImVec4(-8192.0f, -8192.0f, +8192.0f, +8192.0f);
     InitialFlags = ImDrawListFlags_None;
 
-    // Const data
+    // Lookup tables
     for (int i = 0; i < IM_ARRAYSIZE(CircleVtx12); i++)
     {
         const float a = ((float)i * 2 * IM_PI) / (float)IM_ARRAYSIZE(CircleVtx12);
         CircleVtx12[i] = ImVec2(ImCos(a), ImSin(a));
     }
+    memset(CircleSegmentCounts, 0, sizeof(CircleSegmentCounts)); // This will be set by SetCircleSegmentMaxError()
+}
+
+void ImDrawListSharedData::SetCircleSegmentMaxError(float max_error)
+{
+    if (CircleSegmentMaxError == max_error)
+        return;
+    CircleSegmentMaxError = max_error;
+    for (int i = 0; i < IM_ARRAYSIZE(CircleSegmentCounts); i++)
+    {
+        const float radius = i + 1.0f;
+        const int segment_count = IM_DRAWLIST_CIRCLE_AUTO_SEGMENT_CALC(radius, CircleSegmentMaxError);
+        CircleSegmentCounts[i] = (ImU8)ImMin(segment_count, 255);
+    }
 }
 
 void ImDrawList::Clear()
@@ -516,10 +533,13 @@ void ImDrawList::PopTextureID()
     UpdateTextureID();
 }
 
-// NB: this can be called with negative count for removing primitives (as long as the result does not underflow)
+// Reserve space for a number of vertices and indices.
+// You must finish filling your reserved data before calling PrimReserve() again, as it may reallocate or
+// submit the intermediate results. PrimUnreserve() can be used to release unused allocations.
 void ImDrawList::PrimReserve(int idx_count, int vtx_count)
 {
     // Large mesh support (when enabled)
+    IM_ASSERT_PARANOID(idx_count >= 0 && vtx_count >= 0);
     if (sizeof(ImDrawIdx) == 2 && (_VtxCurrentIdx + vtx_count >= (1 << 16)) && (Flags & ImDrawListFlags_AllowVtxOffset))
     {
         _VtxCurrentOffset = VtxBuffer.Size;
@@ -527,7 +547,7 @@ void ImDrawList::PrimReserve(int idx_count, int vtx_count)
         AddDrawCmd();
     }
 
-    ImDrawCmd& draw_cmd = CmdBuffer.Data[CmdBuffer.Size-1];
+    ImDrawCmd& draw_cmd = CmdBuffer.Data[CmdBuffer.Size - 1];
     draw_cmd.ElemCount += idx_count;
 
     int vtx_buffer_old_size = VtxBuffer.Size;
@@ -539,6 +559,17 @@ void ImDrawList::PrimReserve(int idx_count, int vtx_count)
     _IdxWritePtr = IdxBuffer.Data + idx_buffer_old_size;
 }
 
+// Release the a number of reserved vertices/indices from the end of the last reservation made with PrimReserve().
+void ImDrawList::PrimUnreserve(int idx_count, int vtx_count)
+{
+    IM_ASSERT_PARANOID(idx_count >= 0 && vtx_count >= 0);
+
+    ImDrawCmd& draw_cmd = CmdBuffer.Data[CmdBuffer.Size - 1];
+    draw_cmd.ElemCount -= idx_count;
+    VtxBuffer.shrink(VtxBuffer.Size - vtx_count);
+    IdxBuffer.shrink(IdxBuffer.Size - idx_count);
+}
+
 // Fully unrolled with inline call to keep our debug builds decently fast.
 void ImDrawList::PrimRect(const ImVec2& a, const ImVec2& c, ImU32 col)
 {
@@ -893,6 +924,17 @@ void ImDrawList::PathArcTo(const ImVec2& center, float radius, float a_min, floa
     }
 }
 
+ImVec2 ImBezierCalc(const ImVec2& p1, const ImVec2& p2, const ImVec2& p3, const ImVec2& p4, float t)
+{
+    float u = 1.0f - t;
+    float w1 = u*u*u;
+    float w2 = 3*u*u*t;
+    float w3 = 3*u*t*t;
+    float w4 = t*t*t;
+    return ImVec2(w1*p1.x + w2*p2.x + w3*p3.x + w4*p4.x, w1*p1.y + w2*p2.y + w3*p3.y + w4*p4.y);
+}
+
+// Closely mimics BezierClosestPointCasteljauStep() in imgui.cpp
 static void PathBezierToCasteljau(ImVector<ImVec2>* path, float x1, float y1, float x2, float y2, float x3, float y3, float x4, float y4, float tess_tol, int level)
 {
     float dx = x4 - x1;
@@ -913,7 +955,6 @@ static void PathBezierToCasteljau(ImVector<ImVec2>* path, float x1, float y1, fl
         float x123 = (x12+x23)*0.5f,    y123 = (y12+y23)*0.5f;
         float x234 = (x23+x34)*0.5f,    y234 = (y23+y34)*0.5f;
         float x1234 = (x123+x234)*0.5f, y1234 = (y123+y234)*0.5f;
-
         PathBezierToCasteljau(path, x1,y1,        x12,y12,    x123,y123,  x1234,y1234, tess_tol, level+1);
         PathBezierToCasteljau(path, x1234,y1234,  x234,y234,  x34,y34,    x4,y4,       tess_tol, level+1);
     }
@@ -924,22 +965,13 @@ void ImDrawList::PathBezierCurveTo(const ImVec2& p2, const ImVec2& p3, const ImV
     ImVec2 p1 = _Path.back();
     if (num_segments == 0)
     {
-        // Auto-tessellated
-        PathBezierToCasteljau(&_Path, p1.x, p1.y, p2.x, p2.y, p3.x, p3.y, p4.x, p4.y, _Data->CurveTessellationTol, 0);
+        PathBezierToCasteljau(&_Path, p1.x, p1.y, p2.x, p2.y, p3.x, p3.y, p4.x, p4.y, _Data->CurveTessellationTol, 0); // Auto-tessellated
     }
     else
     {
         float t_step = 1.0f / (float)num_segments;
         for (int i_step = 1; i_step <= num_segments; i_step++)
-        {
-            float t = t_step * i_step;
-            float u = 1.0f - t;
-            float w1 = u*u*u;
-            float w2 = 3*u*u*t;
-            float w3 = 3*u*t*t;
-            float w4 = t*t*t;
-            _Path.push_back(ImVec2(w1*p1.x + w2*p2.x + w3*p3.x + w4*p4.x, w1*p1.y + w2*p2.y + w3*p3.y + w4*p4.y));
-        }
+            _Path.push_back(ImBezierCalc(p1, p2, p3, p4, t_step * i_step));
     }
 }
 
@@ -1069,6 +1101,67 @@ void ImDrawList::AddTriangleFilled(const ImVec2& p1, const ImVec2& p2, const ImV
 }
 
 void ImDrawList::AddCircle(const ImVec2& center, float radius, ImU32 col, int num_segments, float thickness)
+{
+    if ((col & IM_COL32_A_MASK) == 0 || radius <= 0.0f)
+        return;
+
+    // Obtain segment count
+    if (num_segments <= 0)
+    {
+        // Automatic segment count
+        const int radius_idx = (int)radius - 1;
+        if (radius_idx < IM_ARRAYSIZE(_Data->CircleSegmentCounts))
+            num_segments = _Data->CircleSegmentCounts[radius_idx]; // Use cached value
+        else
+            num_segments = IM_DRAWLIST_CIRCLE_AUTO_SEGMENT_CALC(radius, _Data->CircleSegmentMaxError);
+    }
+    else
+    {
+        // Explicit segment count (still clamp to avoid drawing insanely tessellated shapes)
+        num_segments = ImClamp(num_segments, 3, IM_DRAWLIST_CIRCLE_AUTO_SEGMENT_MAX);
+    }
+
+    // Because we are filling a closed shape we remove 1 from the count of segments/points
+    const float a_max = (IM_PI * 2.0f) * ((float)num_segments - 1.0f) / (float)num_segments;
+    if (num_segments == 12)
+        PathArcToFast(center, radius - 0.5f, 0, 12);
+    else
+        PathArcTo(center, radius - 0.5f, 0.0f, a_max, num_segments - 1);
+    PathStroke(col, true, thickness);
+}
+
+void ImDrawList::AddCircleFilled(const ImVec2& center, float radius, ImU32 col, int num_segments)
+{
+    if ((col & IM_COL32_A_MASK) == 0 || radius <= 0.0f)
+        return;
+
+    // Obtain segment count
+    if (num_segments <= 0)
+    {
+        // Automatic segment count
+        const int radius_idx = (int)radius - 1;
+        if (radius_idx < IM_ARRAYSIZE(_Data->CircleSegmentCounts))
+            num_segments = _Data->CircleSegmentCounts[radius_idx]; // Use cached value
+        else
+            num_segments = IM_DRAWLIST_CIRCLE_AUTO_SEGMENT_CALC(radius, _Data->CircleSegmentMaxError);
+    }
+    else
+    {
+        // Explicit segment count (still clamp to avoid drawing insanely tessellated shapes)
+        num_segments = ImClamp(num_segments, 3, IM_DRAWLIST_CIRCLE_AUTO_SEGMENT_MAX);
+    }
+
+    // Because we are filling a closed shape we remove 1 from the count of segments/points
+    const float a_max = (IM_PI * 2.0f) * ((float)num_segments - 1.0f) / (float)num_segments;
+    if (num_segments == 12)
+        PathArcToFast(center, radius, 0, 12);
+    else
+        PathArcTo(center, radius, 0.0f, a_max, num_segments - 1);
+    PathFillConvex(col);
+}
+
+// Guaranteed to honor 'num_segments'
+void ImDrawList::AddNgon(const ImVec2& center, float radius, ImU32 col, int num_segments, float thickness)
 {
     if ((col & IM_COL32_A_MASK) == 0 || num_segments <= 2)
         return;
@@ -1079,7 +1172,8 @@ void ImDrawList::AddCircle(const ImVec2& center, float radius, ImU32 col, int nu
     PathStroke(col, true, thickness);
 }
 
-void ImDrawList::AddCircleFilled(const ImVec2& center, float radius, ImU32 col, int num_segments)
+// Guaranteed to honor 'num_segments'
+void ImDrawList::AddNgonFilled(const ImVec2& center, float radius, ImU32 col, int num_segments)
 {
     if ((col & IM_COL32_A_MASK) == 0 || num_segments <= 2)
         return;
@@ -1090,13 +1184,14 @@ void ImDrawList::AddCircleFilled(const ImVec2& center, float radius, ImU32 col,
     PathFillConvex(col);
 }
 
-void ImDrawList::AddBezierCurve(const ImVec2& pos0, const ImVec2& cp0, const ImVec2& cp1, const ImVec2& pos1, ImU32 col, float thickness, int num_segments)
+// Cubic Bezier takes 4 controls points
+void ImDrawList::AddBezierCurve(const ImVec2& p1, const ImVec2& p2, const ImVec2& p3, const ImVec2& p4, ImU32 col, float thickness, int num_segments)
 {
     if ((col & IM_COL32_A_MASK) == 0)
         return;
 
-    PathLineTo(pos0);
-    PathBezierCurveTo(cp0, cp1, pos1, num_segments);
+    PathLineTo(p1);
+    PathBezierCurveTo(p2, p3, p4, num_segments);
     PathStroke(col, false, thickness);
 }
 
@@ -1214,7 +1309,7 @@ void ImDrawListSplitter::ClearFreeMemory()
 
 void ImDrawListSplitter::Split(ImDrawList* draw_list, int channels_count)
 {
-    IM_ASSERT(_Current == 0 && _Count <= 1);
+    IM_ASSERT(_Current == 0 && _Count <= 1 && "Nested channel splitting is not supported. Please use separate instances of ImDrawListSplitter.");
     int old_channels_count = _Channels.Size;
     if (old_channels_count < channels_count)
         _Channels.resize(channels_count);
@@ -1275,7 +1370,7 @@ void ImDrawListSplitter::Merge(ImDrawList* draw_list)
             // Merge previous channel last draw command with current channel first draw command if matching.
             last_cmd->ElemCount += ch._CmdBuffer[0].ElemCount;
             idx_offset += ch._CmdBuffer[0].ElemCount;
-            ch._CmdBuffer.erase(ch._CmdBuffer.Data);
+            ch._CmdBuffer.erase(ch._CmdBuffer.Data); // FIXME-OPT: Improve for multiple merges.
         }
         if (ch._CmdBuffer.Size > 0)
             last_cmd = &ch._CmdBuffer.back();
@@ -1673,7 +1768,7 @@ ImFont* ImFontAtlas::AddFontFromFileTTF(const char* filename, float size_pixels,
     void* data = ImFileLoadToMemory(filename, "rb", &data_size, 0);
     if (!data)
     {
-        IM_ASSERT(0); // Could not load file.
+        IM_ASSERT_USER_ERROR(0, "Could not load font file!");
         return NULL;
     }
     ImFontConfig font_cfg = font_cfg_template ? *font_cfg_template : ImFontConfig();
@@ -1725,7 +1820,8 @@ ImFont* ImFontAtlas::AddFontFromMemoryCompressedBase85TTF(const char* compressed
 
 int ImFontAtlas::AddCustomRectRegular(unsigned int id, int width, int height)
 {
-    IM_ASSERT(id >= 0x10000);
+    // Breaking change on 2019/11/21 (1.74): ImFontAtlas::AddCustomRectRegular() now requires an ID >= 0x110000 (instead of >= 0x10000)
+    IM_ASSERT(id >= 0x110000);
     IM_ASSERT(width > 0 && width <= 0xFFFF);
     IM_ASSERT(height > 0 && height <= 0xFFFF);
     ImFontAtlasCustomRect r;
@@ -1752,7 +1848,7 @@ int ImFontAtlas::AddCustomRectFontGlyph(ImFont* font, ImWchar id, int width, int
     return CustomRects.Size - 1; // Return index
 }
 
-void ImFontAtlas::CalcCustomRectUV(const ImFontAtlasCustomRect* rect, ImVec2* out_uv_min, ImVec2* out_uv_max)
+void ImFontAtlas::CalcCustomRectUV(const ImFontAtlasCustomRect* rect, ImVec2* out_uv_min, ImVec2* out_uv_max) const
 {
     IM_ASSERT(TexWidth > 0 && TexHeight > 0);   // Font atlas needs to be built before we can calculate UV coordinates
     IM_ASSERT(rect->IsPacked());                // Make sure the rectangle has been packed
@@ -1905,7 +2001,7 @@ bool    ImFontAtlasBuildWithStbTruetype(ImFontAtlas* atlas)
             dst_tmp.GlyphsSet.Resize(dst_tmp.GlyphsHighest + 1);
 
         for (const ImWchar* src_range = src_tmp.SrcRanges; src_range[0] && src_range[1]; src_range += 2)
-            for (int codepoint = src_range[0]; codepoint <= src_range[1]; codepoint++)
+            for (unsigned int codepoint = src_range[0]; codepoint <= src_range[1]; codepoint++)
             {
                 if (dst_tmp.GlyphsSet.GetBit(codepoint))    // Don't overwrite existing glyphs. We could make this an option for MergeMode (e.g. MergeOverwrite==true)
                     continue;
@@ -2069,7 +2165,7 @@ bool    ImFontAtlasBuildWithStbTruetype(ImFontAtlas* atlas)
         const float descent = ImFloor(unscaled_descent * font_scale + ((unscaled_descent > 0.0f) ? +1 : -1));
         ImFontAtlasBuildSetupFont(atlas, dst_font, &cfg, ascent, descent);
         const float font_off_x = cfg.GlyphOffset.x;
-        const float font_off_y = cfg.GlyphOffset.y + (float)(int)(dst_font->Ascent + 0.5f);
+        const float font_off_y = cfg.GlyphOffset.y + IM_ROUND(dst_font->Ascent);
 
         for (int glyph_i = 0; glyph_i < src_tmp.GlyphsCount; glyph_i++)
         {
@@ -2080,7 +2176,7 @@ bool    ImFontAtlasBuildWithStbTruetype(ImFontAtlas* atlas)
             const float char_advance_x_mod = ImClamp(char_advance_x_org, cfg.GlyphMinAdvanceX, cfg.GlyphMaxAdvanceX);
             float char_off_x = font_off_x;
             if (char_advance_x_org != char_advance_x_mod)
-                char_off_x += cfg.PixelSnapH ? (float)(int)((char_advance_x_mod - char_advance_x_org) * 0.5f) : (char_advance_x_mod - char_advance_x_org) * 0.5f;
+                char_off_x += cfg.PixelSnapH ? ImFloor((char_advance_x_mod - char_advance_x_org) * 0.5f) : (char_advance_x_mod - char_advance_x_org) * 0.5f;
 
             // Register glyph
             stbtt_aligned_quad q;
@@ -2189,7 +2285,7 @@ void ImFontAtlasBuildFinish(ImFontAtlas* atlas)
     for (int i = 0; i < atlas->CustomRects.Size; i++)
     {
         const ImFontAtlasCustomRect& r = atlas->CustomRects[i];
-        if (r.Font == NULL || r.ID > 0x10000)
+        if (r.Font == NULL || r.ID >= 0x110000)
             continue;
 
         IM_ASSERT(r.Font->ContainerAtlas == atlas);
@@ -2453,7 +2549,7 @@ void ImFontGlyphRangesBuilder::AddText(const char* text, const char* text_end)
         text += c_len;
         if (c_len == 0)
             break;
-        if (c < 0x10000)
+        if (c <= IM_UNICODE_CODEPOINT_MAX)
             AddChar((ImWchar)c);
     }
 }
@@ -2467,12 +2563,12 @@ void ImFontGlyphRangesBuilder::AddRanges(const ImWchar* ranges)
 
 void ImFontGlyphRangesBuilder::BuildRanges(ImVector<ImWchar>* out_ranges)
 {
-    int max_codepoint = 0x10000;
-    for (int n = 0; n < max_codepoint; n++)
+    const int max_codepoint = IM_UNICODE_CODEPOINT_MAX;
+    for (int n = 0; n <= max_codepoint; n++)
         if (GetBit(n))
         {
             out_ranges->push_back((ImWchar)n);
-            while (n < max_codepoint - 1 && GetBit(n + 1))
+            while (n < max_codepoint && GetBit(n + 1))
                 n++;
             out_ranges->push_back((ImWchar)n);
         }
@@ -2591,7 +2687,7 @@ void ImFont::AddGlyph(ImWchar codepoint, float x0, float y0, float x1, float y1,
     glyph.AdvanceX = advance_x + ConfigData->GlyphExtraSpacing.x;  // Bake spacing into AdvanceX
 
     if (ConfigData->PixelSnapH)
-        glyph.AdvanceX = (float)(int)(glyph.AdvanceX + 0.5f);
+        glyph.AdvanceX = IM_ROUND(glyph.AdvanceX);
 
     // Compute rough surface usage metrics (+1 to account for average padding, +0.99 to round)
     DirtyLookupTables = true;
@@ -2601,7 +2697,7 @@ void ImFont::AddGlyph(ImWchar codepoint, float x0, float y0, float x1, float y1,
 void ImFont::AddRemapChar(ImWchar dst, ImWchar src, bool overwrite_dst)
 {
     IM_ASSERT(IndexLookup.Size > 0);    // Currently this can only be called AFTER the font has been built, aka after calling ImFontAtlas::GetTexDataAs*() function.
-    int index_size = IndexLookup.Size;
+    unsigned int index_size = (unsigned int)IndexLookup.Size;
 
     if (dst < index_size && IndexLookup.Data[dst] == (ImWchar)-1 && !overwrite_dst) // 'dst' already exists
         return;
@@ -2833,8 +2929,8 @@ void ImFont::RenderChar(ImDrawList* draw_list, float size, ImVec2 pos, ImU32 col
     if (const ImFontGlyph* glyph = FindGlyph(c))
     {
         float scale = (size >= 0.0f) ? (size / FontSize) : 1.0f;
-        pos.x = (float)(int)pos.x + DisplayOffset.x;
-        pos.y = (float)(int)pos.y + DisplayOffset.y;
+        pos.x = IM_FLOOR(pos.x + DisplayOffset.x);
+        pos.y = IM_FLOOR(pos.y + DisplayOffset.y);
         draw_list->PrimReserve(6, 4);
         draw_list->PrimRectUV(ImVec2(pos.x + glyph->X0 * scale, pos.y + glyph->Y0 * scale), ImVec2(pos.x + glyph->X1 * scale, pos.y + glyph->Y1 * scale), ImVec2(glyph->U0, glyph->V0), ImVec2(glyph->U1, glyph->V1), col);
     }
@@ -2846,8 +2942,8 @@ void ImFont::RenderText(ImDrawList* draw_list, float size, ImVec2 pos, ImU32 col
         text_end = text_begin + strlen(text_begin); // ImGui:: functions generally already provides a valid text_end, so this is merely to handle direct calls.
 
     // Align to be pixel perfect
-    pos.x = (float)(int)pos.x + DisplayOffset.x;
-    pos.y = (float)(int)pos.y + DisplayOffset.y;
+    pos.x = IM_FLOOR(pos.x + DisplayOffset.x);
+    pos.y = IM_FLOOR(pos.y + DisplayOffset.y);
     float x = pos.x;
     float y = pos.y;
     if (y > clip_rect.w)
@@ -3020,9 +3116,9 @@ void ImFont::RenderText(ImDrawList* draw_list, float size, ImVec2 pos, ImU32 col
         x += char_width;
     }
 
-    // Give back unused vertices
-    draw_list->VtxBuffer.resize((int)(vtx_write - draw_list->VtxBuffer.Data));
-    draw_list->IdxBuffer.resize((int)(idx_write - draw_list->IdxBuffer.Data));
+    // Give back unused vertices (clipped ones, blanks) ~ this is essentially a PrimUnreserve() action.
+    draw_list->VtxBuffer.Size = (int)(vtx_write - draw_list->VtxBuffer.Data); // Same as calling shrink()
+    draw_list->IdxBuffer.Size = (int)(idx_write - draw_list->IdxBuffer.Data);
     draw_list->CmdBuffer[draw_list->CmdBuffer.Size-1].ElemCount -= (idx_expected_size - draw_list->IdxBuffer.Size);
     draw_list->_VtxWritePtr = vtx_write;
     draw_list->_IdxWritePtr = idx_write;
@@ -3201,9 +3297,9 @@ static unsigned int stb_adler32(unsigned int adler32, unsigned char *buffer, uns
 {
     const unsigned long ADLER_MOD = 65521;
     unsigned long s1 = adler32 & 0xffff, s2 = adler32 >> 16;
-    unsigned long blocklen, i;
+    unsigned long blocklen = buflen % 5552;
 
-    blocklen = buflen % 5552;
+    unsigned long i;
     while (buflen) {
         for (i=0; i + 7 < blocklen; i += 8) {
             s1 += buffer[0], s2 += s1;
@@ -3230,10 +3326,9 @@ static unsigned int stb_adler32(unsigned int adler32, unsigned char *buffer, uns
 
 static unsigned int stb_decompress(unsigned char *output, const unsigned char *i, unsigned int /*length*/)
 {
-    unsigned int olen;
     if (stb__in4(0) != 0x57bC0000) return 0;
     if (stb__in4(4) != 0)          return 0; // error! stream is > 4GB
-    olen = stb_decompress_length(i);
+    const unsigned int olen = stb_decompress_length(i);
     stb__barrier_in_b = i;
     stb__barrier_out_e = output + olen;
     stb__barrier_out_b = output;
@@ -3365,3 +3460,5 @@ static const char* GetDefaultCompressedFontDataTTFBase85()
 {
     return proggy_clean_ttf_compressed_data_base85;
 }
+
+#endif // #ifndef IMGUI_DISABLE

imstb_textedit.h

@@ -1,4 +1,4 @@
-// [DEAR IMGUI] 
+// [DEAR IMGUI]
 // This is a slightly modified version of stb_textedit.h 1.13. 
 // Those changes would need to be pushed into nothings/stb:
 // - Fix in stb_textedit_discard_redo (see https://github.com/nothings/stb/issues/321)

imstb_truetype.h

@@ -1,4 +1,4 @@
-// [DEAR IMGUI] 
+// [DEAR IMGUI]
 // This is a slightly modified version of stb_truetype.h 1.20.
 // Mostly fixing for compiler and static analyzer warnings.
 // Grep for [DEAR IMGUI] to find the changes.

misc/README.txt

@@ -16,3 +16,9 @@ misc/natvis/
   Natvis file to describe dear imgui types in the Visual Studio debugger.
   With this, types like ImVector<> will be displayed nicely in the debugger.
   You can include this file a Visual Studio project file, or install it in Visual Studio folder.
+
+misc/single_file/
+  Single-file header stub.
+  We use this to validate compiling all *.cpp files in a same compilation unit.
+  Users of that technique (also called "Unity builds") can generally provide this themselves,
+  so we don't really recommend you use this in your projects.

misc/fonts/binary_to_compressed_c.cpp

@@ -1,9 +1,10 @@
-// ImGui - binary_to_compressed_c.cpp
+// dear imgui
+// (binary_to_compressed_c.cpp)
 // Helper tool to turn a file into a C array, if you want to embed font data in your source code.
 
 // The data is first compressed with stb_compress() to reduce source code size,
 // then encoded in Base85 to fit in a string so we can fit roughly 4 bytes of compressed data into 5 bytes of source code (suggested by @mmalex)
-// (If we used 32-bits constants it would require take 11 bytes of source code to encode 4 bytes, and be endianness dependent)
+// (If we used 32-bit constants it would require take 11 bytes of source code to encode 4 bytes, and be endianness dependent)
 // Note that even with compression, the output array is likely to be bigger than the binary file..
 // Load compressed TTF fonts with ImGui::GetIO().Fonts->AddFontFromMemoryCompressedTTF()
 

misc/freetype/imgui_freetype.cpp

@@ -545,7 +545,7 @@ bool ImFontAtlasBuildWithFreeType(FT_Library ft_library, ImFontAtlas* atlas, uns
         const float descent = src_tmp.Font.Info.Descender;
         ImFontAtlasBuildSetupFont(atlas, dst_font, &cfg, ascent, descent);
         const float font_off_x = cfg.GlyphOffset.x;
-        const float font_off_y = cfg.GlyphOffset.y + (float)(int)(dst_font->Ascent + 0.5f);
+        const float font_off_y = cfg.GlyphOffset.y + IM_ROUND(dst_font->Ascent);
 
         const int padding = atlas->TexGlyphPadding;
         for (int glyph_i = 0; glyph_i < src_tmp.GlyphsCount; glyph_i++)
@@ -572,7 +572,7 @@ bool ImFontAtlasBuildWithFreeType(FT_Library ft_library, ImFontAtlas* atlas, uns
             float char_advance_x_mod = ImClamp(char_advance_x_org, cfg.GlyphMinAdvanceX, cfg.GlyphMaxAdvanceX);
             float char_off_x = font_off_x;
             if (char_advance_x_org != char_advance_x_mod)
-                char_off_x += cfg.PixelSnapH ? (float)(int)((char_advance_x_mod - char_advance_x_org) * 0.5f) : (char_advance_x_mod - char_advance_x_org) * 0.5f;
+                char_off_x += cfg.PixelSnapH ? IM_FLOOR((char_advance_x_mod - char_advance_x_org) * 0.5f) : (char_advance_x_mod - char_advance_x_org) * 0.5f;
 
             // Register glyph
             float x0 = info.OffsetX + char_off_x;

misc/single_file/imgui_single_file.h

@@ -0,0 +1,17 @@
+// imgui_single_file.h
+// We use this to validate compiling all *.cpp files in a same compilation unit.
+// Users of that technique (also called "Unity builds") can generally provide this themselves,
+// so we don't really recommend you use this in your projects.
+
+// Do this:
+//    #define IMGUI_IMPLEMENTATION
+// Before you include this file in *one* C++ file to create the implementation.
+// Using this in your project will leak the contents of imgui_internal.h and ImVec2 operators in this compilation unit.
+#include "../../imgui.h"
+
+#ifdef IMGUI_IMPLEMENTATION
+#include "../../imgui.cpp"
+#include "../../imgui_demo.cpp"
+#include "../../imgui_draw.cpp"
+#include "../../imgui_widgets.cpp"
+#endif