IDirectDrawSurface4::ChangeUniquenessValue

The IDirectDrawSurface4::ChangeUniquenessValue method manually updates the uniqueness value for this surface.

HRESULT ChangeUniquenessValue(); 
 

Parameters

None.

Return Values

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:

Remarks

DirectDraw automatically updates uniqueness values whenever the contents of a surface change.

QuickInfo

  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.

See Also

IDirectDrawSurface4::GetUniquenessValue, Surface Uniqueness Values