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Overview |
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Group |
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Quick Info
Windows NT
| Yes
| Win95
| Yes
| Win32s
| No
| Import Library
| gdi32.lib
| Header File
| wingdi.h
| Unicode
| No
| Platform Notes
| Windows 95: 16-bit coordinates only
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PolyBezier
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
| );
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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.
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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