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The GetVideoPortFlipStatuscallback function indicates whether a V-sync has occurred since the flip was performed on the specified surface. This callback is required.
DWORD __stdcall GetVideoPortFlipStatus( LPDDHAL_GETVPORTFLIPSTATUSDATA pgvpfsd );
Parameters
- pgvpfsd
- Pointer to a
DDHAL_GETVPORTFLIPSTATUSDATAstructure that contains the
information about the flip status of the specified surface.
Return Values
Returns one of the following values:
- DDHAL_DRIVER_HANDLED
- DDHAL_DRIVER_NOTHANDLED
Remarks
This function allows Ddraw.dll to fail locks on a surface that was recently flipped from so the HAL doesn't have to account for this.
If a video V-sync has not occurred since the flip was performed on the specified surface, the HAL should set the ddRVal member of the DDHAL_GETVPORTFLIPSTATUSDATAstructure to DDERR_WASSTILLDRAWING.
Last updated on Tuesday, July 13, 2004