Various comments + Doc: Examples readme. Moved main menu bar code below menu bar code.

examples/README.txt

@@ -62,10 +62,10 @@ 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.
@@ -122,16 +122,32 @@ 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.
+Note that Dear ImGui works with Emscripten. The examples_emscripten/ app uses imgui_impl_sdl.cpp and
-The examples_emscripten/ app uses sdl.cpp + opengl3.cpp but other combinations are possible.
+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...
+    Languages:
-    Frameworks: Cinder, Cocoa (OSX), Cocos2d-x, SFML, GML/GameMaker Studio, Irrlicht, Ogre, OpenSceneGraph,
+     C, C#, ChaiScript, CovScript, D, Go, Haxe/hxcpp, Java, JavaScript, Julia, Lua, Nim,
-    openFrameworks, LOVE, NanoRT, Nim Game Lib, Qt3d, SFML, Unreal Engine 4...
+     Odin, Pascal, PureBasic, Python, Ruby, Rust, Swift...
-    Miscellaneous: Software Renderer, RemoteImgui, etc.
+
+    Frameworks:
+     Amethyst, bsf, Cinder, Cocoa2d-x, Diligent Engine, Flexium, GML/GameMaker Studio,
+     GTK3 + OpenGL, Irrlicht, Ogre, OpenSceneGraph/OSG, openFrameworks, Orx, LÖVE+LUA,
+     Magnum, NanoRT, Nim Game Lib, px_render, Qt, Qt3d, SFML, Sokol, Unreal Engine 4, vtk...
+
+    Miscellaneous: Software Renderer, RemoteImgui, imgui-ws, 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.cp
+    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.
 
 
 ---------------------------------------

imgui.h

@@ -27,7 +27,7 @@ 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
@@ -39,8 +39,9 @@ Index of this file:
 // Header mess
 //-----------------------------------------------------------------------------
 
-#include <float.h>                  // FLT_MAX
+// Includes
-#include <stdarg.h>                 // va_list
+#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
 
@@ -66,13 +67,13 @@ Index of this file:
 #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.
+#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
@@ -123,7 +124,7 @@ 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
@@ -157,7 +158,7 @@ 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 +202,14 @@ 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 +246,9 @@ 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.
+    //   [Important: due to legacy reason, this is inconsistent with most other functions such as BeginMenu/EndMenu, 
-    //    where the EndXXX call should only be called if the corresponding BeginXXX function returned true.]
+    //    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 +257,13 @@ 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.
@@ -342,6 +344,7 @@ 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.
@@ -384,7 +387,7 @@ namespace ImGui
 
     // 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          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 +402,7 @@ 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 +417,7 @@ 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!
@@ -509,7 +513,7 @@ 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 +539,19 @@ 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.
+    // - Use BeginMenuBar() on a window ImGuiWindowFlags_MenuBar to append to its menu bar.
-    IMGUI_API void          EndMainMenuBar();                                                   // only call EndMainMenuBar() if BeginMainMenuBar() returns true!
+    // - 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().
@@ -556,7 +563,7 @@ 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.
+    // (*) 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!
@@ -572,6 +579,7 @@ namespace ImGui
     // 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!)
+    // - By end of the 2019 we will expose a new 'Table' api which will replace columns.
     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 +590,6 @@ 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.

imgui_demo.cpp

@@ -3263,7 +3263,7 @@ 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();
 
@@ -3311,7 +3311,7 @@ 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();

imgui_widgets.cpp

@@ -5943,10 +5943,10 @@ void ImGui::Value(const char* prefix, float v, const char* float_format)
 // [SECTION] MenuItem, BeginMenu, EndMenu, etc.
 //-------------------------------------------------------------------------
 // - ImGuiMenuColumns [Internal]
-// - BeginMainMenuBar()
-// - EndMainMenuBar()
 // - BeginMenuBar()
 // - EndMenuBar()
+// - BeginMainMenuBar()
+// - EndMainMenuBar()
 // - BeginMenu()
 // - EndMenu()
 // - MenuItem()
@@ -5994,40 +5994,6 @@ float ImGuiMenuColumns::CalcExtraSpace(float avail_w)
     return ImMax(0.0f, avail_w - Width);
 }
 
-// For the main menu bar, which cannot be moved, we honor g.Style.DisplaySafeAreaPadding to ensure text can be visible on a TV set.
-bool ImGui::BeginMainMenuBar()
-{
-    ImGuiContext& g = *GImGui;
-    g.NextWindowData.MenuBarOffsetMinVal = ImVec2(g.Style.DisplaySafeAreaPadding.x, ImMax(g.Style.DisplaySafeAreaPadding.y - g.Style.FramePadding.y, 0.0f));
-    SetNextWindowPos(ImVec2(0.0f, 0.0f));
-    SetNextWindowSize(ImVec2(g.IO.DisplaySize.x, g.NextWindowData.MenuBarOffsetMinVal.y + g.FontBaseSize + g.Style.FramePadding.y));
-    PushStyleVar(ImGuiStyleVar_WindowRounding, 0.0f);
-    PushStyleVar(ImGuiStyleVar_WindowMinSize, ImVec2(0,0));
-    ImGuiWindowFlags window_flags = ImGuiWindowFlags_NoTitleBar | ImGuiWindowFlags_NoResize | ImGuiWindowFlags_NoMove | ImGuiWindowFlags_NoScrollbar | ImGuiWindowFlags_NoSavedSettings | ImGuiWindowFlags_MenuBar;
-    bool is_open = Begin("##MainMenuBar", NULL, window_flags) && BeginMenuBar();
-    PopStyleVar(2);
-    g.NextWindowData.MenuBarOffsetMinVal = ImVec2(0.0f, 0.0f);
-    if (!is_open)
-    {
-        End();
-        return false;
-    }
-    return true; //-V1020
-}
-
-void ImGui::EndMainMenuBar()
-{
-    EndMenuBar();
-
-    // When the user has left the menu layer (typically: closed menus through activation of an item), we restore focus to the previous window
-    // FIXME: With this strategy we won't be able to restore a NULL focus.
-    ImGuiContext& g = *GImGui;
-    if (g.CurrentWindow == g.NavWindow && g.NavLayer == 0 && !g.NavAnyRequest)
-        FocusTopMostWindowUnderOne(g.NavWindow, NULL);
-
-    End();
-}
-
 // FIXME: Provided a rectangle perhaps e.g. a BeginMenuBarEx() could be used anywhere..
 // Currently the main responsibility of this function being to setup clip-rect + horizontal layout + menu navigation layer.
 // Ideally we also want this to be responsible for claiming space out of the main window scrolling rectangle, in which case ImGuiWindowFlags_MenuBar will become unnecessary.
@@ -6101,6 +6067,40 @@ void ImGui::EndMenuBar()
     window->DC.MenuBarAppending = false;
 }
 
+// For the main menu bar, which cannot be moved, we honor g.Style.DisplaySafeAreaPadding to ensure text can be visible on a TV set.
+bool ImGui::BeginMainMenuBar()
+{
+    ImGuiContext& g = *GImGui;
+    g.NextWindowData.MenuBarOffsetMinVal = ImVec2(g.Style.DisplaySafeAreaPadding.x, ImMax(g.Style.DisplaySafeAreaPadding.y - g.Style.FramePadding.y, 0.0f));
+    SetNextWindowPos(ImVec2(0.0f, 0.0f));
+    SetNextWindowSize(ImVec2(g.IO.DisplaySize.x, g.NextWindowData.MenuBarOffsetMinVal.y + g.FontBaseSize + g.Style.FramePadding.y));
+    PushStyleVar(ImGuiStyleVar_WindowRounding, 0.0f);
+    PushStyleVar(ImGuiStyleVar_WindowMinSize, ImVec2(0, 0));
+    ImGuiWindowFlags window_flags = ImGuiWindowFlags_NoTitleBar | ImGuiWindowFlags_NoResize | ImGuiWindowFlags_NoMove | ImGuiWindowFlags_NoScrollbar | ImGuiWindowFlags_NoSavedSettings | ImGuiWindowFlags_MenuBar;
+    bool is_open = Begin("##MainMenuBar", NULL, window_flags) && BeginMenuBar();
+    PopStyleVar(2);
+    g.NextWindowData.MenuBarOffsetMinVal = ImVec2(0.0f, 0.0f);
+    if (!is_open)
+    {
+        End();
+        return false;
+    }
+    return true; //-V1020
+}
+
+void ImGui::EndMainMenuBar()
+{
+    EndMenuBar();
+
+    // When the user has left the menu layer (typically: closed menus through activation of an item), we restore focus to the previous window
+    // FIXME: With this strategy we won't be able to restore a NULL focus.
+    ImGuiContext& g = *GImGui;
+    if (g.CurrentWindow == g.NavWindow && g.NavLayer == 0 && !g.NavAnyRequest)
+        FocusTopMostWindowUnderOne(g.NavWindow, NULL);
+
+    End();
+}
+
 bool ImGui::BeginMenu(const char* label, bool enabled)
 {
     ImGuiWindow* window = GetCurrentWindow();