Retrieves an interface on the underlying IDXSurface::GetDirectDrawSurface object if the DXSurface object is aggregated onto a IDXSurface::GetDirectDrawSurface.
HRESULT retVal = object.GetDirectDrawSurface(riid, ppSurface);
Value that indicates the type of interface to return. This can be any interface ID defined by DirectDraw, such as IID_IDirectDrawSurface, IID_IDirectDrawSurface2, or IID_IDirectDrawSurface3, as exposed by the underlying DirectDraw driver.
Address of a pointer to the surface.
This method returns E_NOTIMPL if the DXSurface does not have an underlying IDXSurface::GetDirectDrawSurface. This is the case for some surfaces, such as procedural surfaces.