IDirectDrawSurface5::GetUniquenessValue

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The IDirectDrawSurface5::GetUniquenessValuemethod retrieves the current uniqueness value for this surface.

HRESULT GetUniquenessValue(
LPDWORD
lpValue,
);

Parameters

lpValue

Address of a variable that will be filled with the surface's current uniqueness value, if the call succeeds.

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:

DDERR_INVALIDOBJECT

DDERR_INVALIDPARAMS

Remarks

The only defined uniqueness value is zero, which indicates that the surface is likely to be changing beyond DirectDraw's control. Other uniqueness values are only significant if they differ from a previously cached uniqueness value. If the current value is different than a cached value, then the contents of the surface have changed.

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