GetVideoPortField
The GetVideoPortField callback function determines whether the current field of an interlaced signal is even or odd. This callback is only required if the DDVPCAPS_READBACKFIELD flag is set in the DDVIDEOPORTCAPS structure.
DWORD __stdcall GetVideoPortField(
LPDDHAL_GETVPORTFIELDDATA pgvpfd );
Parameters
- pgvpfd
Pointer to a DDHAL_GETVPORTFIELDDATA structure that contains the information required to determine whether the current field of an interlaced signal is even or odd.
Return Values
Returns one of the following values:
- DDHAL_DRIVER_HANDLED
- DDHAL_DRIVER_NOTHANDLED
Last updated on Tuesday, July 13, 2004
© 1992-2000 Microsoft Corporation. All rights reserved.