DrvStrokeAndFillPath

DrvStrokeAndFillPath

BOOL DrvStrokeAndFillPath(

IN SURFOBJ *pso,
IN PATHOBJ *ppo,
IN CLIPOBJ *pco,
IN XFORMOBJ *pxo,
IN BRUSHOBJ *pboStroke,
IN LINEATTRS *plineattrs,
IN BRUSHOBJ *pboFill,
IN POINTL *pptlBrushOrg,
IN MIX mixFill,
IN FLONG flOptions
);

DrvStrokeAndFillPath fills and strokes a path concurrently.

Parameters

pso

Points to a SURFOBJ structure that describes the surface on which to draw.

ppo

Points to a PATHOBJ structure that describes the path to be filled. The PATHOBJ_Xxx service routines are provided to enumerate the lines, Bezier curves, and other data that make up the path.

pco

Points to a CLIPOBJ structure. The CLIPOBJ_Xxx service routines are provided to enumerate the clip region as a set of rectangles.

pxo

Points to a XFORMOBJ structure that is required when a geometric wide line is drawn. It specifies the transform that takes world coordinates to device coordinates. This is needed because the path is provided in device coordinates but a geometric wide line is actually widened in world coordinates. The XFORMOBJ can be queried to find out what the transform is.

pboStroke

Specifies the brush to use when stroking the path.

plineattrs

Points to the LINEATTRS structure that describes the attributes of the line to be drawn.

pboFill

Specifies the brush to use when filling the path.

pptlBrushOrg

Specifies the brush origin for both brushes.

mixFill

Specifies the foreground and background raster operations to use for the fill brush.

flOptions

Specifies either FP_WINDINGMODE, meaning that a winding mode fill should be performed, or FP_ALTERNATEMODE, meaning that an alternating mode fill should be performed. All other flags should be ignored.

Return Value

The return value is TRUE if the driver can fill the path. Otherwise, if GDI should fill the path, the return value is FALSE. If an error occurs, the return value is DDI_ERROR, and an error code is logged.

Comments

If a wide line is used for stroking, the filled area must be reduced to compensate.

The driver can return FALSE if the path or the clipping is too complex for the device to handle; in that case, GDI converts to a simpler call. For example, if the device driver has set the GCAPS_BEZIERS flag in the flGraphicsCaps member of the DEVINFO structure and then receives a path with Bezier curves, it can return FALSE; GDI will then convert the Bezier curves to lines and call DrvStrokeAndFillPath again. If the device driver returns FALSE again, GDI can convert the call into separate DrvStrokePath and DrvPaint calls.

The mix mode defines how the incoming pattern should be mixed with the data already on the device surface. The MIX data type consists of two ROP2 values packed into a single ULONG. The low-order byte defines the foreground raster operation; the next byte defines the background raster operation. For more information about raster operation codes, see the Win32 SDK.