Partager via

DDHAL_FLIPDATA (Windows Embedded CE 6.0)

  • Article

1/6/2010

This structure contains information needed to do a flip. This structure passes the information to the DirectDraw hardware abstraction layer (DDHAL) Flip callback function.

Syntax

typedef struct _DDHAL_FLIPDATA {
  LPDDRAWI_DIRECTDRAW_GBL lpDD;
  LPDDRAWI_DDRAWSURFACE_LCL lpSurfCurr;
  LPDDRAWI_DDRAWSURFACE_LCL lpSurfTarg;
  DWORD dwFlags;
  HRESULT ddRVal;
} DDHAL_FLIPDATA;

Members

  • lpSurfTarg
    Pointer to the DDRAWI_DDRAWSURFACE_LCL structure that represents the target surface, which is the surface to which the data will be flipped.

  • dwFlags
    Flags specifying flip options.

    The following table shows the possible flags.

    Flag Description

    DDFLIP_EVEN

    Indicates that the target surface contains the even field of video data. This flag is only valid with an overlay surface.

    DDFLIP_INTERVAL1

    Indicates that DirectDraw will flip on every sync.

    DDFLIP_INTERVAL2

    Indicates that DirectDraw will flip on every other vertical sync. This flag and the following two flags indicate how many vertical retraces to wait between each flip. The default is one. DirectDraw will return DDHAL Callback Return Values for each surface involved in the flip until the specified number of vertical retraces has occurred. These three flags are only effective if the DDCAPS2_FLIPINTERVAL flag is set. If that flag is not set, these three flags have no effect.

    DDFLIP_INTERVAL4

    Indicates that DirectDraw will flip on every fourth vertical sync.

    DDFLIP_ODD

    Indicates that the target surface contains the odd field of video data. This flag is only valid with an overlay surface.

    DDFLIP_WAITNOTBUSY

    Indicates that the driver should wait until the hardware is not busy to perform the flip.

    DDFLIP_WAITVSYNC

    Indicates that the driver should wait until the next vertical retrace to perform the flip.
  • ddRVal
    Passes the DirectDraw return values.

Requirements

Header ddrawi.h
Windows Embedded CE Windows Embedded CE 6.0 and later

See Also

Reference

LPDDHALSURFCB_FLIP
DDRAWI_DIRECTDRAW_GBL
DDRAWI_DDRAWSURFACE_LCL

Concepts

DirectDrawSurface Structures
DDHAL Callback Return Values