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Pen.RotateTransform Method (Single, MatrixOrder)

Rotates the local geometric transformation by the specified angle in the specified order.

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

public void RotateTransform(
	float angle,
	MatrixOrder order


Type: System.Single
The angle of rotation.
Type: System.Drawing.Drawing2D.MatrixOrder
A MatrixOrder that specifies whether to append or prepend the rotation matrix.

Because the shape of a pen is circular, a rotation does not have any visible effect unless the pen is scaled in the x- or y-axis direction.

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 Pen.

  • Scales the pen by 2 times in the x-axis direction.

  • Draws a rectangle using the pen.

  • Rotates the pen 90 degrees clockwise.

  • Draws a second rectangle to demonstrate the difference.

public void RotateTransform_Example2(PaintEventArgs e)

    // Create a Pen object.
    Pen rotatePen = new Pen(Color.Black, 5);

    // Scale rotatePen by 2X in the x-direction.
    rotatePen.ScaleTransform(2, 1);

    // Draw a rectangle with rotatePen.
    e.Graphics.DrawRectangle(rotatePen, 10, 10, 100, 100);

    // Rotate rotatePen 90 degrees clockwise.
    rotatePen.RotateTransform(90, MatrixOrder.Append);

    // Draw a second rectangle with rotatePen.
    e.Graphics.DrawRectangle(rotatePen, 120, 10, 100, 100);

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.