DD_GETVPORTSIGNALDATA structure (ddrawint.h)
The DD_GETVPORTSIGNALDATA structure contains the signal status of the hardware video port.
Syntax
typedef struct _DD_GETVPORTSIGNALDATA {
PDD_DIRECTDRAW_LOCAL lpDD;
PDD_VIDEOPORT_LOCAL lpVideoPort;
DWORD dwStatus;
HRESULT ddRVal;
VOID *GetVideoSignalStatus;
} *PDD_GETVPORTSIGNALDATA, DD_GETVPORTSIGNALDATA;
Members
lpDD
Points to a DD_DIRECTDRAW_LOCAL structure that is relevant to the current Microsoft DirectDraw process only.
lpVideoPort
Points to a DD_VIDEOPORT_LOCAL structure that represents this video port extensions (VPE) object.
dwStatus
Specifies the location in which the driver should write the status of the signal at the hardware video port. This member can be one of the following values:
Flag | Meaning |
---|---|
DDVPSQ_NOSIGNAL | No video signal is present at the hardware video port. |
DDVPSQ_SIGNALOK | A valid video signal is present at the hardware video port. |
ddRVal
Specifies the location in which the driver writes the return value of the DdVideoPortGetSignalStatus callback. A return code of DD_OK indicates success. For more information, see Return Values for DirectDraw.
GetVideoSignalStatus
Used by the DirectDraw API and should not be filled in by the driver.
Requirements
Requirement | Value |
---|---|
Header | ddrawint.h (include Winddi.h) |