| DirectX SDK | 
The IDirectDrawSurface7::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 it fails, the method can return one of the following error values:
| DDERR_GENERIC | 
| DDERR_INVALIDOBJECT | 
| DDERR_INVALIDPARAMS | 
| DDERR_INVALIDPOSITION | 
| DDERR_NOOVERLAYDEST | 
| DDERR_NOTAOVERLAYSURFACE | 
| DDERR_OVERLAYNOTVISIBLE | 
| DDERR_SURFACELOST | 
| DDERR_UNSUPPORTED | 
  Windows NT/2000: Requires Windows 2000.
  Windows 95/98: Requires Windows 98.
  Header: Declared in ddraw.h.
IDirectDrawSurface7::GetOverlayPosition, IDirectDrawSurface7::UpdateOverlay