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

• Show log

  Commit

• Hash : b72938c8
  Author :
  Date : 2015-04-20T12:22:44
  

  Windows: Always set the system timer resolution to 1ms by default.
  
  An existing hint lets apps that don't need the timer resolution changed avoid
  this, to save battery, etc, but this fixes several problems in timing, audio
  callbacks not firing fast enough, etc.
  
  Fixes Bugzilla #2944.
  

Download

• 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)
  {
      if (FAILED(Windows::Foundation::Initialize(RO_INIT_MULTITHREADED))) {
          return 1;
      }
  
      SDL_WinRTRunApp(SDL_main, NULL);
      return 0;
  }
  

Download