kc3-lang/SDL/src/main/winrt/SDL_winrt_main_NonXAML.cpp

Branch : - branch - v2.28 - tag -

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• Author : David Ludwig
  Date : 2017-10-24 13:21:11
  Hash : 0e032d58
  Message : WinRT: Move Windows::Foundation::Initialize to SDL2.dll, from SDL_main. This allows C# UWP applications to use SDL2's SDL_WinRTRunApp function. Kudos to Ethan Lee (flibitijibibo@flibitijibibo.com) for the patch. Thanks!

• src/main/winrt/SDL_winrt_main_NonXAML.cpp

• /*
      SDL_winrt_main_NonXAML.cpp, placed in the public domain by David Ludwig  3/13/14
  */
  
  #include "SDL_main.h"
  #include <wrl.h>
  
  /* At least one file in any SDL/WinRT app appears to require compilation
     with C++/CX, otherwise a Windows Metadata file won't get created, and
     an APPX0702 build error can appear shortly after linking.
  
     The following set of preprocessor code forces this file to be compiled
     as C++/CX, which appears to cause Visual C++ 2012's build tools to
     create this .winmd file, and will help allow builds of SDL/WinRT apps
     to proceed without error.
  
     If other files in an app's project enable C++/CX compilation, then it might
     be possible for SDL_winrt_main_NonXAML.cpp to be compiled without /ZW,
     for Visual C++'s build tools to create a winmd file, and for the app to
     build without APPX0702 errors.  In this case, if
     SDL_WINRT_METADATA_FILE_AVAILABLE is defined as a C/C++ macro, then
     the #error (to force C++/CX compilation) will be disabled.
  
     Please note that /ZW can be specified on a file-by-file basis.  To do this,
     right click on the file in Visual C++, click Properties, then change the
     setting through the dialog that comes up.
  */
  #ifndef SDL_WINRT_METADATA_FILE_AVAILABLE
  #ifndef __cplusplus_winrt
  #error SDL_winrt_main_NonXAML.cpp must be compiled with /ZW, otherwise build errors due to missing .winmd files can occur.
  #endif
  #endif
  
  /* Prevent MSVC++ from warning about threading models when defining our
     custom WinMain.  The threading model will instead be set via a direct
     call to Windows::Foundation::Initialize (rather than via an attributed
     function).
  
     To note, this warning (C4447) does not seem to come up unless this file
     is compiled with C++/CX enabled (via the /ZW compiler flag).
  */
  #ifdef _MSC_VER
  #pragma warning(disable:4447)
  #endif
  
  /* Make sure the function to initialize the Windows Runtime gets linked in. */
  #ifdef _MSC_VER
  #pragma comment(lib, "runtimeobject.lib")
  #endif
  
  int CALLBACK WinMain(HINSTANCE, HINSTANCE, LPSTR, int)
  {
      return SDL_WinRTRunApp(SDL_main, NULL);
  }