DD_SYNCVIDEOPORTDATA structure (ddrawint.h)

The DD_SYNCVIDEOPORTDATA structure contains the video port extensions (VPE) object information.

Syntax

typedef struct _DD_SYNCVIDEOPORTDATA {
  PDD_DIRECTDRAW_LOCAL lpDD;
  PDD_VIDEOPORT_LOCAL  lpVideoPort;
  DWORD                dwOriginOffset;
  DWORD                dwHeight;
  DWORD                dwVBIHeight;
  ULONG                dwDriverReserved1;
  ULONG                dwDriverReserved2;
  ULONG                dwDriverReserved3;
  HRESULT              ddRVal;
} *PDD_SYNCVIDEOPORTDATA, DD_SYNCVIDEOPORTDATA;

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 describes the hardware video port with which to sync.

dwOriginOffset

Contains the byte offset from the top left corner of the surface to the top left corner of where the VPE object writes its data. This value is only used by the video miniport driver. This member must contain data that is filled in by the driver.

dwHeight

Contains the height in pixels of the VPE object data. By default, this is twice the field height when interleaved, but the driver can change this if it needs to. This value is used only by the video miniport driver. This member can be modified by the driver, but does not need to be.

dwVBIHeight

Contains the number of lines in the VBI region. This value is used only by the video miniport driver. This member can be modified by the driver, but does not need to be.

dwDriverReserved1

Is reserved for use by the display driver.

dwDriverReserved2

Reserved for use by the display driver.

dwDriverReserved3

Reserved for use by the display driver.

ddRVal

Specifies the location in which the driver writes the return value of the DdSyncVideoPortData callback. A return code of DD_OK indicates success. For more information, see Return Values for DirectDraw.

Requirements

Requirement	Value
Header	ddrawint.h (include Winddi.h)

See also

DdSyncVideoPortData