Edit

PDD_VPORTCB_GETSIGNALSTATUS callback function (ddrawint.h)

  • Article

The DdVideoPortGetSignalStatus callback function retrieves the status of the video signal currently being presented to the hardware video port.

Syntax

PDD_VPORTCB_GETSIGNALSTATUS PddVportcbGetsignalstatus;

DWORD PddVportcbGetsignalstatus(
  PDD_GETVPORTSIGNALDATA unnamedParam1
)
{...}

Parameters

unnamedParam1

Points to a DD_GETVPORTSIGNALDATA structure that contains the information required for the driver to retrieve the status of the video signal.

Return value

DdVideoPortGetSignalStatus returns one of the following callback codes:

Remarks

DirectDraw drivers that support VPE must implement DdVideoPortGetSignalStatus.

The driver should determine whether a valid signal is coming in to the hardware video port and report the result in the dwStatus member of the DD_GETVPORTSIGNALDATA structure at lpGetSignalStatus.

Requirements

Requirement Value
Target Platform Desktop
Header ddrawint.h (include Winddi.h)

See also

DD_GETVPORTSIGNALDATA