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Backend: Win32: support keyboard codepage conversion for when compiling in MBCS mode and creating a non-Unicode window. (#6785, #6782, #5725)
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@ -36,6 +36,7 @@ typedef DWORD (WINAPI *PFN_XInputGetState)(DWORD, XINPUT_STATE*);
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// CHANGELOG
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// (minor and older changes stripped away, please see git history for details)
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// 2023-09-07: Inputs: Added support for keyboard codepage conversion for when application is compiled in MBCS mode and using a non-Unicode window.
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// 2023-04-19: Added ImGui_ImplWin32_InitForOpenGL() to facilitate combining raw Win32/Winapi with OpenGL. (#3218)
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// 2023-04-04: Inputs: Added support for io.AddMouseSourceEvent() to discriminate ImGuiMouseSource_Mouse/ImGuiMouseSource_TouchScreen/ImGuiMouseSource_Pen. (#2702)
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// 2023-02-15: Inputs: Use WM_NCMOUSEMOVE / WM_NCMOUSELEAVE to track mouse position over non-client area (e.g. OS decorations) when app is not focused. (#6045, #6162)
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@ -94,6 +95,7 @@ struct ImGui_ImplWin32_Data
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INT64 Time;
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INT64 TicksPerSecond;
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ImGuiMouseCursor LastMouseCursor;
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UINT32 KeyboardCodePage;
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#ifndef IMGUI_IMPL_WIN32_DISABLE_GAMEPAD
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bool HasGamepad;
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@ -116,6 +118,16 @@ static ImGui_ImplWin32_Data* ImGui_ImplWin32_GetBackendData()
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}
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// Functions
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static void ImGui_ImplWin32_UpdateKeyboardCodePage()
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{
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// Retrieve keyboard code page, required for handling of non-Unicode Windows.
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ImGui_ImplWin32_Data* bd = ImGui_ImplWin32_GetBackendData();
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HKL keyboard_layout = ::GetKeyboardLayout(0);
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LCID keyboard_lcid = MAKELCID(HIWORD(keyboard_layout), SORT_DEFAULT);
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if (::GetLocaleInfoA(keyboard_lcid, (LOCALE_RETURN_NUMBER | LOCALE_IDEFAULTANSICODEPAGE), (LPSTR)&bd->KeyboardCodePage, sizeof(bd->KeyboardCodePage)) == 0)
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bd->KeyboardCodePage = CP_ACP; // Fallback to default ANSI code page when fails.
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}
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static bool ImGui_ImplWin32_InitEx(void* hwnd, bool platform_has_own_dc)
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{
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ImGuiIO& io = ImGui::GetIO();
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@ -138,6 +150,7 @@ static bool ImGui_ImplWin32_InitEx(void* hwnd, bool platform_has_own_dc)
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bd->TicksPerSecond = perf_frequency;
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bd->Time = perf_counter;
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bd->LastMouseCursor = ImGuiMouseCursor_COUNT;
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ImGui_ImplWin32_UpdateKeyboardCodePage();
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// Set platform dependent data in viewport
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ImGui::GetMainViewport()->PlatformHandleRaw = (void*)hwnd;
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@ -671,6 +684,9 @@ IMGUI_IMPL_API LRESULT ImGui_ImplWin32_WndProcHandler(HWND hwnd, UINT msg, WPARA
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case WM_KILLFOCUS:
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io.AddFocusEvent(msg == WM_SETFOCUS);
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return 0;
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case WM_INPUTLANGCHANGE:
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ImGui_ImplWin32_UpdateKeyboardCodePage();
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return 0;
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case WM_CHAR:
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if (::IsWindowUnicode(hwnd))
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{
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@ -681,7 +697,7 @@ IMGUI_IMPL_API LRESULT ImGui_ImplWin32_WndProcHandler(HWND hwnd, UINT msg, WPARA
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else
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{
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wchar_t wch = 0;
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::MultiByteToWideChar(CP_ACP, MB_PRECOMPOSED, (char*)&wParam, 1, &wch, 1);
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::MultiByteToWideChar(bd->KeyboardCodePage, MB_PRECOMPOSED, (char*)&wParam, 1, &wch, 1);
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io.AddInputCharacter(wch);
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}
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return 0;
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@ -52,6 +52,8 @@ Other changes:
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Was most often noticable when using an horizontal scrollbar. (#6789)
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- ImDrawList: Added AddEllipse(), AddEllipseFilled(), PathEllipticalArcTo(). (#2743) [@Doohl]
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- Backends: GLFW: Clear emscripten's MouseWheel callback before shutdown. (#6790, #6096, #4019) [@halx99]
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- Backends: Win32: Added support for keyboard codepage conversion for when application
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is compiled in MBCS mode and using a non-Unicode window. (#6785, #6782, #5725, #5961) [@sneakyevil]
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-----------------------------------------------------------------------
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