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The GetVideoPortLinecallback function returns the current line counter of the video port. This function is required only if the driver sets the DDVPCAPS_READBACKLINEflag in the DDVIDEOPORTCAPSstructure.
DWORD __stdcall GetVideoPortLine( LPDDHAL_GETVPORTLINEDATA pgvpld );
Returns one of the following values:
Last updated on Tuesday, July 13, 2004