The IDirectDrawSurface3::GetPixelFormat method retrieves the color and pixel format of the surface.
HRESULT GetPixelFormat(
LPDDPIXELFORMAT lpDDPixelFormat
);
If the method succeeds, the return value is DD_OK.
If the method fails, the return value may be one of the following error values:
| DDERR_INVALIDOBJECT |
| DDERR_INVALIDPARAMS |
| DDERR_INVALIDSURFACETYPE |