The IDirectDrawSurface3::SetOverlayPosition method changes the display coordinates of an overlay surface.
HRESULT SetOverlayPosition(
LONG lX,
LONG lY
);
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_GENERIC |
| DDERR_INVALIDOBJECT |
| DDERR_INVALIDPARAMS |
| DDERR_INVALIDPOSITION |
| DDERR_NOOVERLAYDEST |
| DDERR_NOTAOVERLAYSURFACE |
| DDERR_OVERLAYNOTVISIBLE |
| DDERR_SURFACELOST |
| DDERR_UNSUPPORTED |
IDirectDrawSurface3::GetOverlayPosition, IDirectDrawSurface3::UpdateOverlay