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The IDirectDrawSurface5::ChangeUniquenessValuemethod 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.
Requirements
| Runs on | Versions | Declared in | Link to |
|---|---|---|---|
| Windows CE OS | 2.12 or later. Version 2.12 requires DXPAK 1.0 or later. | ddraw.h | ddraw.lib |
See Also
IDirectDrawSurface5::GetUniquenessValue