C++ LPDIRECTDRAWSURFACE::QueryInterface方法代码示例

//.........这里部分代码省略.........
        BLOCK = false;
        return false;
    }

    ZeroMemory (&ddsd, sizeof (ddsd));
    ddsd.dwSize = sizeof (ddsd);
    ddsd.dwFlags = DDSD_CAPS | DDSD_HEIGHT | DDSD_WIDTH;
	if(GUI.BilinearFilter)
	{
		ddsd.ddsCaps.dwCaps = DDSCAPS_OFFSCREENPLAIN | DDSCAPS_VIDEOMEMORY | (GUI.LocalVidMem ? DDSCAPS_LOCALVIDMEM : DDSCAPS_NONLOCALVIDMEM);
	}
	else
	{
		ddsd.ddsCaps.dwCaps = DDSCAPS_OFFSCREENPLAIN | DDSCAPS_SYSTEMMEMORY;
	}
    ddsd.dwWidth = SNES_WIDTH * pScale;
    ddsd.dwHeight = SNES_HEIGHT_EXTENDED * pScale;

    LPDIRECTDRAWSURFACE lpDDSOffScreen;
    if (FAILED(lpDD->CreateSurface (&ddsd, &lpDDSOffScreen, NULL)))
    {
		ddsd.ddsCaps.dwCaps = DDSCAPS_OFFSCREENPLAIN | DDSCAPS_VIDEOMEMORY | (GUI.LocalVidMem ? DDSCAPS_NONLOCALVIDMEM : DDSCAPS_LOCALVIDMEM);
		if(!GUI.BilinearFilter || FAILED(lpDD->CreateSurface (&ddsd, &lpDDSOffScreen, NULL)))
		{
			ddsd.ddsCaps.dwCaps = DDSCAPS_OFFSCREENPLAIN | DDSCAPS_SYSTEMMEMORY;
			if(!GUI.BilinearFilter || FAILED(lpDD->CreateSurface (&ddsd, &lpDDSOffScreen, NULL)))
			{
				BLOCK = false;
				return (false);
			}
		}
    }

    if (FAILED (lpDDSOffScreen->QueryInterface (IID_IDirectDrawSurface2,
                                                (void **)&lpDDSOffScreen2)))
    {
        lpDDSOffScreen->Release();
        BLOCK = false;
        return (false);
    }
    lpDDSOffScreen2->PageLock(0);
    lpDDSOffScreen->Release();

    ZeroMemory (&ddsd, sizeof (ddsd));
    if (pDoubleBuffered)
    {
        ddsd.dwSize = sizeof( ddsd);
        ddsd.dwFlags = DDSD_CAPS | DDSD_BACKBUFFERCOUNT;
        ddsd.ddsCaps.dwCaps = DDSCAPS_PRIMARYSURFACE | DDSCAPS_COMPLEX | DDSCAPS_FLIP;
        GUI.NumFlipFrames = 3;
        ddsd.dwBackBufferCount = 2;
    }
    else
    {
        GUI.NumFlipFrames = 1;
        ddsd.dwSize = sizeof (ddsd);
        ddsd.dwFlags = DDSD_CAPS;
        ddsd.ddsCaps.dwCaps = DDSCAPS_PRIMARYSURFACE;
    }

    LPDIRECTDRAWSURFACE lpDDSPrimary;

    dErr = lpDD->CreateSurface (&ddsd, &lpDDSPrimary, NULL);
    if( FAILED(dErr) )
    {
        if (pDoubleBuffered)

//-----------------------------------------------------------------------------
// Name: GetDXVersion()
// Desc: This function returns the DirectX version number as follows:
//          0x0000 = No DirectX installed
//          0x0100 = DirectX version 1 installed
//          0x0200 = DirectX 2 installed
//          0x0300 = DirectX 3 installed
//          0x0500 = At least DirectX 5 installed.
//          0x0600 = At least DirectX 6 installed.
//          0x0601 = At least DirectX 6.1 installed.
//          0x0700 = At least DirectX 7 installed.
//          0x0800 = At least DirectX 8 installed.
// 
//       Please note that this code is intended as a general guideline. Your
//       app will probably be able to simply query for functionality (via
//       QueryInterface) for one or two components.
//
//       Please also note:
//          "if( dwDXVersion != 0x500 ) return FALSE;" is VERY BAD. 
//          "if( dwDXVersion <  0x500 ) return FALSE;" is MUCH BETTER.
//       to ensure your app will run on future releases of DirectX.
//-----------------------------------------------------------------------------
DWORD GetDXVersion()
{
    DIRECTDRAWCREATE     DirectDrawCreate   = NULL;
    DIRECTDRAWCREATEEX   DirectDrawCreateEx = NULL;
    DIRECTINPUTCREATE    DirectInputCreate  = NULL;
    HINSTANCE            hDDrawDLL          = NULL;
    HINSTANCE            hDInputDLL         = NULL;
    HINSTANCE            hD3D8DLL           = NULL;
    HINSTANCE            hDPNHPASTDLL       = NULL;
    LPDIRECTDRAW         pDDraw             = NULL;
    LPDIRECTDRAW2        pDDraw2            = NULL;
    LPDIRECTDRAWSURFACE  pSurf              = NULL;
    LPDIRECTDRAWSURFACE3 pSurf3             = NULL;
    LPDIRECTDRAWSURFACE4 pSurf4             = NULL;
    DWORD                dwDXVersion        = 0;
    HRESULT              hr;

    // First see if DDRAW.DLL even exists.
    hDDrawDLL = LoadLibrary(_T("DDRAW.DLL"));
    if( hDDrawDLL == NULL )
    {
        dwDXVersion = 0;
        OutputDebugString(_T("Couldn't LoadLibrary DDraw\r\n"));
        return dwDXVersion;
    }

    // See if we can create the DirectDraw object.
    DirectDrawCreate = (DIRECTDRAWCREATE)GetProcAddress( hDDrawDLL, "DirectDrawCreate" );
    if( DirectDrawCreate == NULL )
    {
        dwDXVersion = 0;
        FreeLibrary( hDDrawDLL );
        OutputDebugString(_T("Couldn't GetProcAddress DirectDrawCreate\r\n"));
        return dwDXVersion;
    }

    hr = DirectDrawCreate( NULL, &pDDraw, NULL );
    if( FAILED(hr) )
    {
        dwDXVersion = 0;
        FreeLibrary( hDDrawDLL );
        OutputDebugString(_T("Couldn't create DDraw\r\n"));
        return dwDXVersion;
    }

    // So DirectDraw exists.  We are at least DX1.
    dwDXVersion = 0x100;

    // Let's see if IID_IDirectDraw2 exists.
    hr = pDDraw->QueryInterface( IID_IDirectDraw2, (VOID**)&pDDraw2 );
    if( FAILED(hr) )
    {
        // No IDirectDraw2 exists... must be DX1
        pDDraw->Release();
        FreeLibrary( hDDrawDLL );
        OutputDebugString(_T("Couldn't QI DDraw2\r\n"));
        return dwDXVersion;
    }

    // IDirectDraw2 exists. We must be at least DX2
    pDDraw2->Release();
    dwDXVersion = 0x200;


	//-------------------------------------------------------------------------
    // DirectX 3.0 Checks
	//-------------------------------------------------------------------------

    // DirectInput was added for DX3
    hDInputDLL = LoadLibrary(_T("DINPUT.DLL"));
    if( hDInputDLL == NULL )
    {
        // No DInput... must not be DX3
        pDDraw->Release();
        FreeLibrary( hDDrawDLL );
        OutputDebugString(_T("Couldn't LoadLibrary DInput\r\n"));
        return dwDXVersion;
    }
//.........这里部分代码省略.........

//.........这里部分代码省略.........
	} else {
		ddsd.ddsCaps.dwCaps =
				(/*DDSCAPS_OFFSCREENPLAIN | */DDSCAPS_SYSTEMMEMORY);
	}

	ddsd.ddpfPixelFormat.dwSize = sizeof(ddsd.ddpfPixelFormat);
	ddsd.ddpfPixelFormat.dwFlags = DDPF_RGB;
//	if ( surface->format->palette ) {
//		ddsd.ddpfPixelFormat.dwFlags |= DDPF_PALETTEINDEXED8;
//	}
#if defined(NONAMELESSUNION)
	ddsd.ddpfPixelFormat.u1.dwRGBBitCount = surface->format->BitsPerPixel;
	ddsd.ddpfPixelFormat.u2.dwRBitMask = surface->format->Rmask;
	ddsd.ddpfPixelFormat.u3.dwGBitMask = surface->format->Gmask;
	ddsd.ddpfPixelFormat.u4.dwBBitMask = surface->format->Bmask;
#else
	ddsd.ddpfPixelFormat.dwRGBBitCount = 16;//surface->format->BitsPerPixel;
	ddsd.ddpfPixelFormat.dwRBitMask = 0xF800;//surface->format->Rmask;
	ddsd.ddpfPixelFormat.dwGBitMask = 0x07E0;//surface->format->Gmask;
	ddsd.ddpfPixelFormat.dwBBitMask = 0x001F;//surface->format->Bmask;
#endif

	/* Create the DirectDraw video surface */
	//if ( requested != NULL ) {
	//	g_pDDSOne = requested;
	//} else 
	{
		hRet = g_pDD->CreateSurface(&ddsd, &g_pDDSBack, NULL); 
#if 0
		if ( hRet != DD_OK ) {
			SetDDerror("DirectDraw2::CreateSurface", hRet);
			goto error_end;
		}
		hRet = g_pDDSBack->QueryInterface(
			&IID_IDirectDrawSurface3, (LPVOID *)&g_pDDSOne);
		g_pDDSBack->Release();
		if ( hRet != DD_OK ) {
			SetDDerror("DirectDrawSurface::QueryInterface", hRet);
			goto error_end;
		}
#endif
	}
#if 0
	if ( (flag & SDL_HWSURFACE) == SDL_HWSURFACE ) {
		/* Check to see whether the surface actually ended up
		   in video memory, and fail if not.  We expect the
		   surfaces we create here to actually be in hardware!
		*/
		hRet = g_pDDSOne->GetCaps(&ddsd.ddsCaps);
		if ( hRet != DD_OK ) {
			//SetDDerror("DirectDrawSurface3::GetCaps", hRet);
			goto error_end;
		}
		if ( (ddsd.ddsCaps.dwCaps & DDSCAPS_VIDEOMEMORY) !=
							DDSCAPS_VIDEOMEMORY ) {
			//SDL_SetError("No room in video memory");
			goto error_end;
		}
	} else {
		/* Try to hook our surface memory */
		ddsd.dwFlags = DDSD_LPSURFACE;
		ddsd.lpSurface = pixelData;//surface->pixels;
		hRet = g_pDDSOne->SetSurfaceDesc(
								&ddsd, 0);
		if ( hRet != DD_OK ) {
			//SetDDerror("DirectDraw2::SetSurfaceDesc", hRet);

//.........这里部分代码省略.........
    if( DDHinst == 0 )
    {
        (*pdwDXVersion)  = 0;
        (*pdwDXPlatform) = 0;
        FreeLibrary( DDHinst );
        return;
    }

    // See if we can create the DirectDraw object.
    DirectDrawCreate = (DIRECTDRAWCREATE)GetProcAddress( DDHinst, "DirectDrawCreate" );
    if( DirectDrawCreate == 0 )
    {
        (*pdwDXVersion)  = 0;
        (*pdwDXPlatform) = 0;
        FreeLibrary( DDHinst );
        OutputDebugString( "Couldn't LoadLibrary DDraw\r\n" );
        return;
    }

    hr = DirectDrawCreate( NULL, &pDDraw, NULL );
    if( FAILED(hr) )
    {
        (*pdwDXVersion)  = 0;
        (*pdwDXPlatform) = 0;
        FreeLibrary( DDHinst );
        OutputDebugString( "Couldn't create DDraw\r\n" );
        return;
    }

    // So DirectDraw exists.  We are at least DX1.
    (*pdwDXVersion) = 0x100;

    // Let's see if IID_IDirectDraw2 exists.
    hr = pDDraw->QueryInterface( IID_IDirectDraw2, (VOID**)&pDDraw2 );
    if( FAILED(hr) )
    {
        // No IDirectDraw2 exists... must be DX1
        pDDraw->Release();
        FreeLibrary( DDHinst );
        OutputDebugString( "Couldn't QI DDraw2\r\n" );
        return;
    }

    // IDirectDraw2 exists. We must be at least DX2
    pDDraw2->Release();
    (*pdwDXVersion) = 0x200;


    ///////////////////////////////////////////////////////////////////////////
    // DirectX 3.0 Checks
    ///////////////////////////////////////////////////////////////////////////

    // DirectInput was added for DX3
    DIHinst = LoadLibrary( "DINPUT.DLL" );
    if( DIHinst == 0 )
    {
        // No DInput... must not be DX3
        OutputDebugString( "Couldn't LoadLibrary DInput\r\n" );
        pDDraw->Release();
        FreeLibrary( DDHinst );
        return;
    }

    DirectInputCreate = (DIRECTINPUTCREATE)GetProcAddress( DIHinst,
                                                        "DirectInputCreateA" );
    if( DirectInputCreate == 0 )

//.........这里部分代码省略.........
        BLOCK = false;
        return false;
    }

    ZeroMemory (&ddsd, sizeof (ddsd));
    ddsd.dwSize = sizeof (ddsd);
    ddsd.dwFlags = DDSD_CAPS | DDSD_HEIGHT | DDSD_WIDTH;
	if(GUI.ddrawUseVideoMemory)
	{
		ddsd.ddsCaps.dwCaps = DDSCAPS_OFFSCREENPLAIN | DDSCAPS_VIDEOMEMORY | (GUI.ddrawUseLocalVidMem ? DDSCAPS_LOCALVIDMEM : DDSCAPS_NONLOCALVIDMEM);
	}
	else
	{
		ddsd.ddsCaps.dwCaps = DDSCAPS_OFFSCREENPLAIN | DDSCAPS_SYSTEMMEMORY;
	}
    ddsd.dwWidth = SNES_WIDTH * pScale;
    ddsd.dwHeight = SNES_HEIGHT_EXTENDED * pScale;

    LPDIRECTDRAWSURFACE lpDDSOffScreen;
    if (FAILED(lpDD->CreateSurface (&ddsd, &lpDDSOffScreen, NULL)))
    {
		ddsd.ddsCaps.dwCaps = DDSCAPS_OFFSCREENPLAIN | DDSCAPS_VIDEOMEMORY | (GUI.ddrawUseLocalVidMem ? DDSCAPS_NONLOCALVIDMEM : DDSCAPS_LOCALVIDMEM);
		if(!GUI.ddrawUseVideoMemory || FAILED(lpDD->CreateSurface (&ddsd, &lpDDSOffScreen, NULL)))
		{
			ddsd.ddsCaps.dwCaps = DDSCAPS_OFFSCREENPLAIN | DDSCAPS_SYSTEMMEMORY;
			if(!GUI.ddrawUseVideoMemory || FAILED(lpDD->CreateSurface (&ddsd, &lpDDSOffScreen, NULL)))
			{
				BLOCK = false;
				return (false);
			}
		}
    }

    if (FAILED (lpDDSOffScreen->QueryInterface (IID_IDirectDrawSurface2,
                                                (void **)&lpDDSOffScreen2)))
    {
        lpDDSOffScreen->Release();
        BLOCK = false;
        return (false);
    }
    lpDDSOffScreen2->PageLock(0);
    lpDDSOffScreen->Release();

    ZeroMemory (&ddsd, sizeof (ddsd));
    if (pDoubleBuffered)
    {
        ddsd.dwSize = sizeof( ddsd);
        ddsd.dwFlags = DDSD_CAPS | DDSD_BACKBUFFERCOUNT;
        ddsd.ddsCaps.dwCaps = DDSCAPS_PRIMARYSURFACE | DDSCAPS_COMPLEX | DDSCAPS_FLIP;
        GUI.NumFlipFrames = 3;
        ddsd.dwBackBufferCount = 2;
    }
    else
    {
        GUI.NumFlipFrames = 1;
        ddsd.dwSize = sizeof (ddsd);
        ddsd.dwFlags = DDSD_CAPS;
        ddsd.ddsCaps.dwCaps = DDSCAPS_PRIMARYSURFACE;
    }

    LPDIRECTDRAWSURFACE lpDDSPrimary;

    dErr = lpDD->CreateSurface (&ddsd, &lpDDSPrimary, NULL);
    if( FAILED(dErr) )
    {
        if (pDoubleBuffered)