mingw-w64-headers/crt/sdks/_mingw_directx.h.in - mingw-w64 - Git at Google

 #if MINGW_HAS_DX
 #ifndef MINGW_HAS_DDRAW_H

 #define MINGW_HAS_DDRAW_H 1
 #define MINGW_DDRAW_VERSION	7
 #endif
 #else
 #undef MINGW_HAS_DDRAW_H
 #undef MINGW_DDRAW_VERSION
 #endif
	#if MINGW_HAS_DX
	#ifndef MINGW_HAS_DDRAW_H

	#define MINGW_HAS_DDRAW_H 1
	#define MINGW_DDRAW_VERSION 7
	#endif
	#else
	#undef MINGW_HAS_DDRAW_H
	#undef MINGW_DDRAW_VERSION
	#endif