Graphics::DrawPie Method (Pen^, Int32, Int32, Int32, Int32, Int32, Int32)

 
System_CAPS_noteNote

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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)

public:
void DrawPie(
	Pen^ pen,
	int x,
	int y,
	int width,
	int height,
	int startAngle,
	int sweepAngle
)

Parameters

pen
Type: System.Drawing::Pen^

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

x
Type: System::Int32

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::Int32

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::Int32

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

height
Type: System::Int32

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

startAngle
Type: System::Int32

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

sweepAngle
Type: System::Int32

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

Exception Condition
ArgumentNullException

pen is null.

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 PaintEventArgse, 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 shape to the screen.

public:
   void DrawPieInt( PaintEventArgs^ e )
   {
      // Create pen.
      Pen^ blackPen = gcnew Pen( Color::Black,3.0f );

      // Create location and size of ellipse.
      int x = 0;
      int y = 0;
      int width = 200;
      int height = 100;

      // Create start and sweep angles.
      int startAngle = 0;
      int sweepAngle = 45;

      // Draw pie to screen.
      e->Graphics->DrawPie( blackPen, x, y, width, height, startAngle, sweepAngle );
   }

.NET Framework
Available since 1.1
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