IDirectDrawSurface7::ChangeUniquenessValue method (ddraw.h)
Manually updates the uniqueness value for this surface.
Syntax
HRESULT ChangeUniquenessValue();
Return value
If the method succeeds, the return value is DD_OK.
If it fails, the method can return one of the following error values:
- DDERR_EXCEPTION
- DDERR_INVALIDOBJECT
- DDERR_INVALIDPARAMS
Remarks
DirectDraw automatically updates uniqueness values whenever the contents of a surface change.
Requirements
| Requirement | Value |
|---|---|
| Target Platform | Windows |
| Header | ddraw.h |
| Library | Ddraw.lib |
| DLL | Ddraw.dll |