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Implement Windows GDI renderer backend. #9406

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752 changes: 752 additions & 0 deletions backends/imgui_impl_gdi.cpp
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28 changes: 28 additions & 0 deletions backends/imgui_impl_gdi.h
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// dear imgui: Renderer Backend for Windows GDI
// This needs to be used along with a Platform Backend (e.g. Win32)

// Implemented features:
// [x] Renderer: Basic Implementation

// The aim of imgui_impl_gdi.h/.cpp is to be usable in your engine without any modification.
// IF YOU FEEL YOU NEED TO MAKE ANY CHANGE TO THIS CODE, please share them and your feedback at https://github.com/ocornut/imgui/

// You can use unmodified imgui_impl_* files in your project. See examples/ folder for examples of using this.
// Prefer including the entire imgui/ repository into your project (either as a copy or as a submodule), and only build the backends you need.
// Learn about Dear ImGui:
// - FAQ https://dearimgui.com/faq
// - Getting Started https://dearimgui.com/getting-started
// - Documentation https://dearimgui.com/docs (same as your local docs/ folder).
// - Introduction, links and more at the top of imgui.cpp

#pragma once
#include "imgui.h" // IMGUI_IMPL_API
#ifndef IMGUI_DISABLE

// Follow "Getting Started" link and check examples/ folder to learn about using backends!
IMGUI_IMPL_API bool ImGui_ImplGDI_Init();
IMGUI_IMPL_API void ImGui_ImplGDI_Shutdown();
IMGUI_IMPL_API void ImGui_ImplGDI_NewFrame();
IMGUI_IMPL_API void ImGui_ImplGDI_RenderDrawData(ImDrawData* draw_data, void* fb_dev_ctx_handle, ImVec4* clear_color); // HDC fb_dev_ctx_handle

#endif // #ifndef IMGUI_DISABLE
8 changes: 8 additions & 0 deletions examples/example_win32_gdi/build_mingw.bat
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@REM Build for MINGW64 or 32 from MSYS2.
@set OUT_DIR=Debug
@set OUT_EXE=example_win32_gdi
@set INCLUDES=-I../.. -I../../backends
@set SOURCES=main.cpp ../../backends/imgui_impl_gdi.cpp ../../backends/imgui_impl_win32.cpp ../../imgui*.cpp
@set LIBS=-lgdi32 -ldwmapi
mkdir %OUT_DIR%
g++ -DUNICODE %INCLUDES% %SOURCES% -o %OUT_DIR%/%OUT_EXE%.exe --static -mwindows %LIBS% %LIBS%
8 changes: 8 additions & 0 deletions examples/example_win32_gdi/build_win32.bat
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@REM Build for Visual Studio compiler. Run your copy of vcvars32.bat or vcvarsall.bat to setup command-line compiler.
@set OUT_DIR=Debug
@set OUT_EXE=example_win32_gdi
@set INCLUDES=/I..\.. /I..\..\backends
@set SOURCES=main.cpp ..\..\backends\imgui_impl_gdi.cpp ..\..\backends\imgui_impl_win32.cpp ..\..\imgui*.cpp
@set LIBS=gdi32.lib dwmapi.lib
mkdir %OUT_DIR%
cl /nologo /Zi /MD /utf-8 %INCLUDES% /D UNICODE /D _UNICODE %SOURCES% /Fe%OUT_DIR%/%OUT_EXE%.exe /Fo%OUT_DIR%/ /link %LIBS%
171 changes: 171 additions & 0 deletions examples/example_win32_gdi/example_win32_gdi.vcxproj
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61 changes: 61 additions & 0 deletions examples/example_win32_gdi/example_win32_gdi.vcxproj.filters
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