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Graphics.DrawBezier Method (Pen, Point, Point, Point, Point)

Draws a Bézier spline defined by four Point structures.

Namespace:  System.Drawing
Assembly:  System.Drawing (in System.Drawing.dll)

public void DrawBezier(
	Pen pen,
	Point pt1,
	Point pt2,
	Point pt3,
	Point pt4
)

Parameters

pen
Type: System.Drawing.Pen

Pen structure that determines the color, width, and style of the curve.

pt1
Type: System.Drawing.Point

Point structure that represents the starting point of the curve.

pt2
Type: System.Drawing.Point

Point structure that represents the first control point for the curve.

pt3
Type: System.Drawing.Point

Point structure that represents the second control point for the curve.

pt4
Type: System.Drawing.Point

Point structure that represents the ending point of the curve.

ExceptionCondition
ArgumentNullException

pen is null.

The Bézier curve is drawn from the first point to the fourth point. The second and third points are control points that determine the shape of the curve.

The following code example is designed for use with Windows Forms, and it requires PaintEventArgs e, which is a parameter of the Paint event handler. The code performs the following actions:

  • Creates a black pen.

  • Creates the start, end, and two control points for the curve.

  • Draws the Bézier curve to the screen.

private void DrawBezierPoint(PaintEventArgs e)
{
    // Create pen.
    Pen blackPen = new Pen(Color.Black, 3);

    // Create points for curve.
    Point start = new Point(100, 100);
    Point control1 = new Point(200, 10);
    Point control2 = new Point(350, 50);
    Point end = new Point(500, 100);

    // Draw arc to screen.
    e.Graphics.DrawBezier(blackPen, start, control1, control2, end);
}

.NET Framework

Supported in: 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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