Graphics.FillClosedCurve Method (Brush, PointF(), FillMode)


Fills the interior of a closed cardinal spline curve defined by an array of PointF structures using the specified fill mode.

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

Public Sub FillClosedCurve (
	brush As Brush,
	points As PointF(),
	fillmode As FillMode


Type: System.Drawing.Brush

Brush that determines the characteristics of the fill.

Type: System.Drawing.PointF()

Array of PointF structures that define the spline.

Type: System.Drawing.Drawing2D.FillMode

Member of the FillMode enumeration that determines how the curve is filled.

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.

  • Sets the fill mode to Winding.

  • Fills the curve on the screen.

The curve has a default tension of 0.5.

Public Sub FillClosedCurvePointFFillMode(ByVal e As PaintEventArgs)

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

    ' Create array of points for curve.
    Dim point1 As New PointF(100.0F, 100.0F)
    Dim point2 As New PointF(200.0F, 50.0F)
    Dim point3 As New PointF(250.0F, 200.0F)
    Dim point4 As New PointF(50.0F, 150.0F)
    Dim points As PointF() = {point1, point2, point3, point4}

    ' Set fill mode.
    Dim newFillMode As FillMode = FillMode.Winding

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

.NET Framework
Available since 1.1
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