DDHAL_LOCKDATA (Windows Embedded CE 6.0)
1/6/2010
This structure contains information necessary to do a Lock operation as defined by DirectDraw's parameter structures. This structure passes the information to the DirectDraw hardware abstraction layer (DDHAL) Lock callback function.
Syntax
typedef struct _DDHAL_LOCKDATA {
LPDDRAWI_DIRECTDRAW_GBL lpDD;
LPDDRAWI_DDRAWSURFACE_LCL lpDDSurface;
BOOL bHasRect;
RECT rArea;
LPVOID lpSurfData;
HRESULT ddRVal;
DWORD dwFlags;
} DDHAL_LOCKDATA;
Members
- lpDD
Pointer to the DDRAWI_DIRECTDRAW_GBL structure that represents the DirectDraw object.
- lpDDSurface
Pointer to the DDRAWI_DDRAWSURFACE_LCL structure that represents the DirectDrawSurface object.
- bHasRect
Specifies whether the area (rArea) is valid or not.
- rArea
Specifies the area being locked.
- lpSurfData
Pointer to a surface memory.
- ddRVal
Passes the DirectDraw return values.
dwFlags
DDLOCK flags.The following table shows the possible flags.
Flag Description DDLOCK_DISCARD
Indicates that every location within a locked surface will be overwritten (with a write-only operation).
DDLOCK_READONLY
Specifies the surface being locked will only be read.
DDLOCK_WAITNOTBUSY
Waits for a previously initiated drawing operation to complete instead of returning immediately with the DDERR_WASSTILLDRAWING return value.
If a previous drawing operation is in progress at the time of the call, this flag defers returning from the call until the surface is locked or an error occurs.
DDLOCK_WRITEONLY
Indicates that the surface being locked will be write-enabled.
Requirements
| Header | ddrawi.h |
| Windows Embedded CE | Windows Embedded CE 6.0 and later |
See Also
Reference
LPDDHALSURFCB_LOCK
DDRAWI_DIRECTDRAW_GBL
DDRAWI_DDRAWSURFACE_LCL