Graphics.FillClosedCurve Method (Brush, Point())


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Fills the interior of a closed cardinal spline curve defined by an array of Point structures.

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

Public Sub FillClosedCurve (
	brush As Brush,
	points As Point()


Type: System.Drawing.Brush

Brush that determines the characteristics of the fill.

Type: System.Drawing.Point()

Array of Point structures that define the spline.

Exception Condition

brush is null.


points is null.

This method fills the interior of a closed cardinal spline that passes through each point in the array. If the last point does not match the first point, an additional curve segment is added from the last point to the first point to close it.

The array of points must contain at least four Point structures.

This method uses a default tension of 0.5.

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

  • Creates a solid red brush.

  • Creates an array of four points to define a spline.

  • Fills the curve on the screen.

The curve has a default tension of 0.5.

Public Sub FillClosedCurvePoint(ByVal e As PaintEventArgs)

    ' Create solid brush.
    Dim redBrush As New SolidBrush(Color.Red)

    'Create array of points for curve.
    Dim point1 As New Point(100, 100)
    Dim point2 As New Point(200, 50)
    Dim point3 As New Point(250, 200)
    Dim point4 As New Point(50, 150)
    Dim points As Point() = {point1, point2, point3, point4}

    ' Fill curve on screen.
    e.Graphics.FillClosedCurve(redBrush, points)
End Sub

.NET Framework
Available since 1.1
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