ENGCALLBACKS (Windows Embedded CE 6.0)
1/6/2010
This structure contains function pointers to the GDI functions for display drivers. It is passed from GDI through DrvEnableDriver to GPEEnableDriver.
Syntax
typedef struct _ENGCALLBACKS {
PVOID (* BRUSHOBJ_pvAllocRbrush)(
BRUSHOBJ* pbo,
ULONG cj
);
PVOID (* BRUSHOBJ_pvGetRbrush)(
BRUSHOBJ* pbo
);
ULONG (* CLIPOBJ_cEnumStart)(
CLIPOBJ* pco,
BOOL bAll,
ULONG iType,
ULONG iDirection,
ULONG cLimit
);
BOOL (* CLIPOBJ_bEnum)(
CLIPOBJ* pco,
ULONG cj,
ULONG* pul
);
ULONG (* PALOBJ_cGetColors)(
PALOBJ* ppalo,
ULONG iStart,
ULONG cColors,
ULONG* pulColors
);
VOID (* PATHOBJ_vEnumStart)(
PATHOBJ* ppo
);
BOOL (* PATHOBJ_bEnum)(
PATHOBJ* ppo,
PATHDATA* ppd
);
VOID (* PATHOBJ_vGetBounds)(
PATHOBJ* ppo,
PRECTFX prectfx
);
ULONG (* XLATEOBJ_cGetPalette)(
XLATEOBJ* pxlo,
ULONG iPal,
ULONG cPal,
ULONG* pPal
);
HSURF (* EngCreateDeviceSurface)(
DHSURF dhsurf,
SIZEL sizl,
ULONG iFormatCompat
);
BOOL (* EngDeleteSurface)(
HSURF hsurf
);
HBITMAP (* EngCreateDeviceBitmap)(
DHSURF dhsurf,
SIZEL sizl,
ULONG iFormatCompat
);
HPALETTE (* EngCreatePalette)(
ULONG iMode,
ULONG cColors,
PULONG pulColors,
FLONG flRed,
FLONG flGreen,
FLONG flBlue
);
} ENGCALLBACKS,* PENGCALLBACKS;
Members
- BRUSHOBJ_pvAllocRbrush
Pointer to a function that allocates memory for a brush. For more information, see BRUSHOBJ_pvAllocRbrush.
- BRUSHOBJ_pvGetRbrush
Pointer to a function that retrieves a pointer to the specified brush. For more information, see BRUSHOBJ_pvGetRbrush.
- CLIPOBJ_cEnumStart
Pointer to a function that sets parameters for enumerating the rectangles in a clipping region. For more information, see CLIPOBJ_cEnumStart.
- CLIPOBJ_bEnum
Pointer to a function that enumerates clipping rectangles from a clipping region. For more information, see CLIPOBJ_bEnum.
- PALOBJ_cGetColors
Pointer to a function that copies colors into a palette. For more information, see PALOBJ_cGetColors.
- PATHOBJ_vEnumStart
Pointer to a function that readies a drawing path to have its component line segments enumerated. For more information, see PATHOBJ_vEnumStart.
- PATHOBJ_bEnum
Pointer to a function that enumerates PATHDATA records from a drawing path. For more information, see PATHOBJ_bEnum.
- PATHOBJ_vGetBounds
Pointer to a function that returns the bounding rectangle for a drawing path. For more information, see PATHOBJ_vGetBounds.
- XLATEOBJ_cGetPalette
Pointer to a function that retrieves colors from an indexed palette. For more information, see XLATEOBJ_cGetPalette.
- EngCreateDeviceSurface
Pointer to a function that causes the GDI to create a device surface that the display driver manages. For more information, see EngCreateDeviceSurface.
- EngDeleteSurface
Pointer to a function that informs the GDI that a device surface no longer is needed by the display driver. For more information, see EngDeleteSurface.
- EngCreateDeviceBitmap
Pointer to a function that causes the GDI to create a handle for a device bitmap. For more information, see EngCreateDeviceBitmap.
- EngCreatePalette
Pointer to a function that causes the GDI to create a handle to a default palette. For more information, see EngCreatePalette.
Requirements
| Header | winddi.h |
| Windows Embedded CE | Windows CE 1.0 and later |
See Also
Reference
Display Driver Structures
DrvEnableDriver
GPEEnableDriver