OpenGL/DirectX examples: support for international text input in UTF-8 + implement ImeSetInputScreenPosFn on Windows.

examples/directx9_example/directx9_example.vcxproj

@@ -46,7 +46,7 @@
     <Link>
       <GenerateDebugInformation>true</GenerateDebugInformation>
       <AdditionalLibraryDirectories>$(DXSDK_DIR)Lib\x86;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
-      <AdditionalDependencies>d3d9.lib;d3dx9d.lib;dxerr.lib;dxguid.lib;winmm.lib;comctl32.lib;gdi32.lib;user32.lib</AdditionalDependencies>
+      <AdditionalDependencies>d3d9.lib;d3dx9d.lib;dxerr.lib;dxguid.lib;winmm.lib;comctl32.lib;gdi32.lib;imm32.lib;user32.lib</AdditionalDependencies>
       <SubSystem>
       </SubSystem>
     </Link>
@@ -64,7 +64,7 @@
       <EnableCOMDATFolding>true</EnableCOMDATFolding>
       <OptimizeReferences>true</OptimizeReferences>
       <AdditionalLibraryDirectories>$(DXSDK_DIR)Lib\x86;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
-      <AdditionalDependencies>d3d9.lib;d3dx9d.lib;dxerr.lib;dxguid.lib;winmm.lib;comctl32.lib;gdi32.lib;user32.lib</AdditionalDependencies>
+      <AdditionalDependencies>d3d9.lib;d3dx9d.lib;dxerr.lib;dxguid.lib;winmm.lib;comctl32.lib;gdi32.lib;imm32.lib;user32.lib</AdditionalDependencies>
       <SubSystem>
       </SubSystem>
     </Link>

examples/directx9_example/main.cpp

@@ -1,4 +1,5 @@
 #include <windows.h>
+#include <imm.h>
 #include <mmsystem.h>
 #include <d3dx9.h>
 #define DIRECTINPUT_VERSION 0x0800
@@ -163,8 +164,8 @@ LRESULT WINAPI MsgProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
         return true;
     case WM_CHAR:
         // You can also use ToAscii()+GetKeyboardState() to retrieve characters.
-        if (wParam > 1 && wParam < 256)
+        if (wParam > 0 && wParam < 0x10000)
-            io.AddInputCharacter((char)wParam);
+            io.AddInputCharacter((unsigned short)wParam);
         return true;
     case WM_DESTROY:
         {
@@ -176,6 +177,19 @@ LRESULT WINAPI MsgProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
     return DefWindowProc(hWnd, msg, wParam, lParam);
 }
 
+// Notify OS Input Method Editor of text input position (e.g. when using Japanese/Chinese inputs, otherwise this isn't needed)
+static void ImImpl_ImeSetInputScreenPosFn(int x, int y)
+{
+	if (HIMC himc = ImmGetContext(hWnd))
+	{
+		COMPOSITIONFORM cf;
+		cf.ptCurrentPos.x = x;
+		cf.ptCurrentPos.y = y;
+		cf.dwStyle = CFS_FORCE_POSITION;
+		ImmSetCompositionWindow(himc, &cf);
+	}
+}
+
 void InitImGui()
 {
     RECT rect;
@@ -204,6 +218,7 @@ void InitImGui()
     io.KeyMap[ImGuiKey_Z] = 'Z';
 
     io.RenderDrawListsFn = ImImpl_RenderDrawLists;
+	io.ImeSetInputScreenPosFn = ImImpl_ImeSetInputScreenPosFn;
     
     // Create the vertex buffer
     if (g_pd3dDevice->CreateVertexBuffer(10000 * sizeof(CUSTOMVERTEX), D3DUSAGE_DYNAMIC | D3DUSAGE_WRITEONLY, D3DFVF_CUSTOMVERTEX, D3DPOOL_DEFAULT, &g_pVB, NULL) < 0)

examples/opengl_example/main.cpp

@@ -1,11 +1,20 @@
-#define GLEW_STATIC
+#ifdef _MSC_VER
-#include <GL/glew.h>
+#pragma warning (disable: 4996)         // 'This function or variable may be unsafe': strcpy, strdup, sprintf, vsnprintf, sscanf, fopen
-#include <GLFW/glfw3.h>
+#include <Windows.h>
+#include <Imm.h>
+#endif
 #define STB_IMAGE_IMPLEMENTATION
 #include "stb_image.h"                  // for .png loading
 #include "../../imgui.h"
+
+// glew & glfw
+#define GLEW_STATIC
+#include <GL/glew.h>
+#include <GLFW/glfw3.h>
 #ifdef _MSC_VER
-#pragma warning (disable: 4996)         // 'This function or variable may be unsafe': strcpy, strdup, sprintf, vsnprintf, sscanf, fopen
+#define GLFW_EXPOSE_NATIVE_WIN32
+#define GLFW_EXPOSE_NATIVE_WGL
+#include <GLFW/glfw3native.h>
 #endif
 
 static GLFWwindow* window;
@@ -70,32 +79,32 @@ static void ImImpl_RenderDrawLists(ImDrawList** const cmd_lists, int cmd_lists_c
     glDisableClientState(GL_VERTEX_ARRAY);
 }
 
+// NB: ImGui already provide OS clipboard support for Windows so this isn't needed if you are using Windows only.
 static const char* ImImpl_GetClipboardTextFn()
 {
     return glfwGetClipboardString(window);
 }
 
-static void ImImpl_SetClipboardTextFn(const char* text, const char* text_end)
+static void ImImpl_SetClipboardTextFn(const char* text)
 {
-    if (!text_end)
-        text_end = text + strlen(text);
-
-    if (*text_end == 0)
-    {
-        // Already got a zero-terminator at 'text_end', we don't need to add one
     glfwSetClipboardString(window, text);
-    }
-    else
-    {
-        // Add a zero-terminator because glfw function doesn't take a size
-        char* buf = (char*)malloc(text_end - text + 1);
-        memcpy(buf, text, text_end-text);
-        buf[text_end-text] = '\0';
-        glfwSetClipboardString(window, buf);
-        free(buf);
-    }
 }
 
+#ifdef _MSC_VER
+// Notify OS Input Method Editor of text input position (e.g. when using Japanese/Chinese inputs, otherwise this isn't needed)
+static void ImImpl_ImeSetInputScreenPosFn(int x, int y)
+{
+	HWND hwnd = glfwGetWin32Window(window);
+	if (HIMC himc = ImmGetContext(hwnd))
+	{
+		COMPOSITIONFORM cf;
+		cf.ptCurrentPos.x = x;
+		cf.ptCurrentPos.y = y;
+		cf.dwStyle = CFS_FORCE_POSITION;
+		ImmSetCompositionWindow(himc, &cf);
+	}
+}
+#endif
 
 // GLFW callbacks to get events
 static void glfw_error_callback(int error, const char* description)
@@ -122,8 +131,8 @@ static void glfw_key_callback(GLFWwindow* window, int key, int scancode, int act
 
 static void glfw_char_callback(GLFWwindow* window, unsigned int c)
 {
-    if (c > 0 && c <= 255)
+    if (c > 0 && c < 0x10000)
-        ImGui::GetIO().AddInputCharacter((char)c);
+        ImGui::GetIO().AddInputCharacter((unsigned short)c);
 }
 
 // OpenGL code based on http://open.gl tutorials
@@ -178,6 +187,9 @@ void InitImGui()
     io.RenderDrawListsFn = ImImpl_RenderDrawLists;
     io.SetClipboardTextFn = ImImpl_SetClipboardTextFn;
     io.GetClipboardTextFn = ImImpl_GetClipboardTextFn;
+#ifdef _MSC_VER
+	io.ImeSetInputScreenPosFn = ImImpl_ImeSetInputScreenPosFn;
+#endif
 
     // Load font texture
     glGenTextures(1, &fontTex);

examples/opengl_example/opengl_example.vcxproj

@@ -46,7 +46,7 @@
     <Link>
       <GenerateDebugInformation>true</GenerateDebugInformation>
       <AdditionalLibraryDirectories>$(SolutionDir)\glfw\lib-msvc100;$(SolutionDir)\glew\lib\Release\Win32;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
-      <AdditionalDependencies>opengl32.lib;glfw3.lib;glew32s.lib;%(AdditionalDependencies)</AdditionalDependencies>
+      <AdditionalDependencies>opengl32.lib;imm32.lib;glfw3.lib;glew32s.lib;%(AdditionalDependencies)</AdditionalDependencies>
       <SubSystem>NotSet</SubSystem>
     </Link>
   </ItemDefinitionGroup>
@@ -63,7 +63,7 @@
       <EnableCOMDATFolding>true</EnableCOMDATFolding>
       <OptimizeReferences>true</OptimizeReferences>
       <AdditionalLibraryDirectories>$(SolutionDir)\glfw\lib-msvc100;$(SolutionDir)\glew\lib\Release\Win32;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
-      <AdditionalDependencies>opengl32.lib;glfw3.lib;glew32s.lib;%(AdditionalDependencies)</AdditionalDependencies>
+      <AdditionalDependencies>opengl32.lib;imm32.lib;glfw3.lib;glew32s.lib;%(AdditionalDependencies)</AdditionalDependencies>
       <SubSystem>NotSet</SubSystem>
     </Link>
   </ItemDefinitionGroup>