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

Draws a Bézier spline defined by four PointF structures.

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

'Declaration
Public Sub DrawBezier ( _
	pen As Pen, _
	pt1 As PointF, _
	pt2 As PointF, _
	pt3 As PointF, _
	pt4 As PointF _
)

Parameters

pen
Type: System.Drawing.Pen

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

pt1
Type: System.Drawing.PointF

PointF structure that represents the starting point of the curve.

pt2
Type: System.Drawing.PointF

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

pt3
Type: System.Drawing.PointF

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

pt4
Type: System.Drawing.PointF

PointF structure that represents the ending point of the curve.

ExceptionCondition
ArgumentNullException

pen is Nothing.

The Bézier spline 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 Sub DrawBezierPointF(ByVal e As PaintEventArgs)

    ' Create pen. 
    Dim blackPen As New Pen(Color.Black, 3)

    ' Create points for curve. 
    Dim start As New PointF(100.0F, 100.0F)
    Dim control1 As New PointF(200.0F, 10.0F)
    Dim control2 As New PointF(350.0F, 50.0F)
    Dim [end] As New PointF(500.0F, 100.0F)

    ' Draw arc to screen.
    e.Graphics.DrawBezier(blackPen, start, control1, control2, [end])
End Sub

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0, 1.1

.NET Framework Client Profile

Supported in: 4, 3.5 SP1
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