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- Description
The TDx_DrawSurface::Unlock method will unlock surface memory that was locked using TDx_DrawSurface::Lock().
It is possible to hold locks on different regions of the same surface, thus it is important that the contents of the Rect parameter be the same as was passed in the Rect parameter of the corresponding TDx_DrawSurface::Lock().
If the method call fails, the OnError event will be triggered with one of the following values:
DDERR_GENERIC
DDERR_INVALIDOBJECT
DDERR_INVALIDPARAMS
DDERR_INVALIDRECT
DDERR_NOTLOCKED
DDERR_SURFACELOST
- Parameters
SurfaceData
The SurfaceData parameter references a TRect defining the portion of the surface that is to be unlocked.
Set this parameter to NULL only when the DestRect parameter of TDx_DrawSurface::Lock() was also set to NULL when the surface was locked.
- See Also
- Top
TDx_Draw_Library v2.00 Component Reference
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[ TDx_DrawSurface::Unlock() ] [ next: UpdateOverlay() ] [ prev: SetSurfaceDesc() ] public:
virtual bool __fastcall Unlock( TRect* pSurfaceData );
TDX_DRAWSURFACE::UNLOCK()
[ component method ]
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