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

Draws a Bézier spline defined by four ordered pairs of coordinates that represent points.

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

public:
void DrawBezier (
	Pen^ pen, 
	float x1, 
	float y1, 
	float x2, 
	float y2, 
	float x3, 
	float y3, 
	float x4, 
	float y4
)
public void DrawBezier (
	Pen pen, 
	float x1, 
	float y1, 
	float x2, 
	float y2, 
	float x3, 
	float y3, 
	float x4, 
	float y4
)
public function DrawBezier (
	pen : Pen, 
	x1 : float, 
	y1 : float, 
	x2 : float, 
	y2 : float, 
	x3 : float, 
	y3 : float, 
	x4 : float, 
	y4 : float
)
Not applicable.

Parameters

pen

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

x1

The x-coordinate of the starting point of the curve.

y1

The y-coordinate of the starting point of the curve.

x2

The x-coordinate of the first control point of the curve.

y2

The y-coordinate of the first control point of the curve.

x3

The x-coordinate of the second control point of the curve.

y3

The y-coordinate of the second control point of the curve.

x4

The x-coordinate of the ending point of the curve.

y4

The y-coordinate of the ending point of the curve.

Exception typeCondition

ArgumentNullException

pen is a null reference (Nothing in Visual Basic).

The Bézier spline is drawn from the first point to the fourth point. The second and third points are control points that determine the shape of the curve.

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 coordinates of the start, end, and two control points for the curve.

  • Draws the Bézier curve to the screen.

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

      // Create coordinates of points for curve.
      float startX = 100.0F;
      float startY = 100.0F;
      float controlX1 = 200.0F;
      float controlY1 = 10.0F;
      float controlX2 = 350.0F;
      float controlY2 = 50.0F;
      float endX = 500.0F;
      float endY = 100.0F;

      // Draw arc to screen.
      e->Graphics->DrawBezier( blackPen, startX, startY, controlX1, controlY1, controlX2, controlY2, endX, endY );
   }

Windows 98, Windows Server 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0, 1.1, 1.0

Community Additions

ADD
Show: