The IDirectDrawSurface4::GetSurfaceDesc method retrieves a description of the surface in its current condition.
HRESULT GetSurfaceDesc(
  LPDDSURFACEDESC2 lpDDSurfaceDesc  
);
 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 | 
  Windows NT/2000: Requires Windows 2000.
  Windows 95/98: Requires Windows 95 or later. Available as a redistributable for Windows 95.
  Header: Declared in ddraw.h.
  Import Library: Use ddraw.lib.