C / C++ / MFC

#pragma comment(lib, "glu32.lib")
#pragma comment(lib, "opengl32.lib")
#pragma comment(lib, "winmm.lib")






#define Client_GLDRAWELEMENTS    0x4E5DA2

#define CAST( Type, Address )        ( ( Type )( Address ) )







typedef void ( WINAPI *GLDRAWELEMENTS_TYPE )( GLenum iMode, GLsizei iCount, GLenum iType, const GLvoid *pvIndices );

GLDRAWELEMENTS_TYPE g_dwGlDrawElements = NULL;

		


void WINAPI glDrawElementsHook( GLenum iMode, GLsizei iCount, GLenum iType, const GLvoid *pvIndices )
{
  
	
	
	( g_dwGlDrawElements )( iMode, iCount, iType, pvIndices );
}  



DWORD OpenGLHooks( PVOID pvArgs )
{
          do
        {
               g_dwGlDrawElements = *( DWORD * )Client_GLDRAWELEMENTS;

               Sleep( 100 );

        } while( g_dwGlDrawElements == NULL );

        *( DWORD * )Client_GLDRAWELEMENTS = PtrToUlong( glDrawElementsHook );

        return NULL;
}  

	
   


bool WINAPI DllMain(HINSTANCE hDll, DWORD dwReason, PVOID pvReserved)
{
	if(dwReason == DLL_PROCESS_ATTACH)
	{

	
	
	
	CreateThread( NULL, 0, ( LPTHREAD_START_ROUTINE )OpenGLHooks, NULL, 0, NULL );
   

	
	return true;
	}
	else if(dwReason == DLL_PROCESS_DETACH)
	{
	}
    return false;
}