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Graphics.DrawPie Method (Pen, Single, Single, Single, Single, Single, Single)

Draws a pie shape defined by an ellipse specified by a coordinate pair, a width, a height, and two radial lines.

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

'Declaration
Public Sub DrawPie ( _
	pen As Pen, _
	x As Single, _
	y As Single, _
	width As Single, _
	height As Single, _
	startAngle As Single, _
	sweepAngle As Single _
)

Parameters

pen
Type: System.Drawing.Pen

Pen that determines the color, width, and style of the pie shape.

x
Type: System.Single

The x-coordinate of the upper-left corner of the bounding rectangle that defines the ellipse from which the pie shape comes.

y
Type: System.Single

The y-coordinate of the upper-left corner of the bounding rectangle that defines the ellipse from which the pie shape comes.

width
Type: System.Single

Width of the bounding rectangle that defines the ellipse from which the pie shape comes.

height
Type: System.Single

Height of the bounding rectangle that defines the ellipse from which the pie shape comes.

startAngle
Type: System.Single

Angle measured in degrees clockwise from the x-axis to the first side of the pie shape.

sweepAngle
Type: System.Single

Angle measured in degrees clockwise from the startAngle parameter to the second side of the pie shape.

ExceptionCondition
ArgumentNullException

pen is Nothing.

This method draws a pie shape defined by an arc of an ellipse and the two radial lines that intersect with the endpoints of the arc. The ellipse is defined by the bounding rectangle described by the x, y, width, and height parameters. The pie shape consists of the two radial lines defined by the startAngle and sweepAngle parameters, and the arc between the intersections of those radial lines with the ellipse.

If the sweepAngle parameter is greater than 360 degrees or less than -360 degrees, it is treated as if it were 360 degrees or -360 degrees, respectively.

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 position and size of a rectangle that bounds a complete ellipse.

  • Defines the angles at which to start drawing (relative to the x axis) and through which to draw (both in a clockwise direction).

  • Draws the pie segment to the screen.

Public Sub DrawPieFloat(ByVal e As PaintEventArgs)

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

    ' Create location and size of ellipse. 
    Dim x As Single = 0.0F
    Dim y As Single = 0.0F
    Dim width As Single = 200.0F
    Dim height As Single = 100.0F

    ' Create start and sweep angles. 
    Dim startAngle As Single = 0.0F
    Dim sweepAngle As Single = 45.0F

    ' Draw pie to screen.
    e.Graphics.DrawPie(blackPen, x, y, width, height, _
    startAngle, sweepAngle)
End Sub

.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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