DirectDraw画面水平或垂直翻转

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DDBLTFX ddbltfx;/* vertically mirror */ZeroMemory(&ddbltfx, sizeof(ddbltfx));ddbltfx.dwSize = sizeof(ddbltfx);ddbltfx.dwDDFX = DDBLTFX_MIRRORUPDOWN;hr = m_pDrawSurface->Blt(&rcDest, pSurface, &rcSrc, DDBLT_WAIT | DDBLT_DDFX, &ddbltfx);/* horizontal mirror */ZeroMemory(&ddbltfx, sizeof(ddbltfx));ddbltfx.dwSize = sizeof(ddbltfx);ddbltfx.dwDDFX = DDBLTFX_MIRRORLEFTRIGHT;hr = m_pDrawSurface->Blt(&rcDest, pSurface, &rcSrc, DDBLT_WAIT | DDBLT_DDFX, &ddbltfx);

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