Graphics.DrawArc Method (Pen, Rectangle, Single, Single)


Draws an arc representing a portion of an ellipse specified by a Rectangle structure.

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

member DrawArc : 
        pen:Pen *
        rect:Rectangle *
        startAngle:float32 *
        sweepAngle:float32 -> unit


Type: System.Drawing.Pen

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

Type: System.Drawing.Rectangle

RectangleF structure that defines the boundaries of the ellipse.

Type: System.Single

Angle in degrees measured clockwise from the x-axis to the starting point of the arc.

Type: System.Single

Angle in degrees measured clockwise from the startAngle parameter to ending point of the arc.

Exception Condition

pen is null.

This method draws an arc that is a portion of the perimeter of an ellipse. The ellipse is defined by the boundaries of a rectangle. The arc is the portion of the perimeter of the ellipse between the startAngle parameter and the startAngle + sweepAngle parameters.

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 black pen.

  • Creates a rectangle to bound an ellipse.

  • Defines the start (45 degrees) and sweep (270 degrees) angles.

  • Draws the elliptical arc to the screen.

The result is a partial ellipse missing a segment between + and - 45 degrees of the x axis.

No code example is currently available or this language may not be supported.

.NET Framework
Available since 1.1
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