PolyBezier info  Overview  Group

The PolyBezier function draws one or more Bézier curves.

BOOL PolyBezier(

HDC hdc,	// handle to device context
CONST POINT *lppt,	// pointer to endpoints and control points
DWORD cPoints	// count of endpoints and control points
);

Parameters

hdc

Identifies a device context.

lppt

Points to an array of POINT structures that contain the endpoints and control points of the curve(s).

cPoints

Specifies the number of points in the lppt array. This value must be one more than three times the number of curves to be drawn, because each Bézier curve requires two control points and an endpoint, and the initial curve requires an additional starting point.

Return Values

If the function succeeds, the return value is nonzero.

If the function fails, the return value is zero. To get extended error information, call GetLastError.

Remarks

Th Polybezier function draws cubic Bézier curves by using the endpoints and control points specified by the lppt parameter. The first curve is drawn from the first point to the fourth point by using the second and third points as control points. Each subsequent curve in the sequence needs exactly three more points: the ending point of the previous curve is used as the starting point, the next two points in the sequence are control points, and the third is the ending point.

The current position is neither used nor updated by the PolyBezier function. The figure is not filled.

This function draws lines by using the current pen.

See Also

MoveToEx, POINT, PolyBezierTo 

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