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Pen.ScaleTransform Method (Single, Single, MatrixOrder)

Scales the local geometric transformation by the specified factors in the specified order.

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

public void ScaleTransform(
	float sx,
	float sy,
	MatrixOrder order


Type: System.Single

The factor by which to scale the transformation in the x-axis direction.

Type: System.Single

The factor by which to scale the transformation in the y-axis direction.

Type: System.Drawing.Drawing2D.MatrixOrder

A MatrixOrder that specifies whether to append or prepend the scaling matrix.

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.

  • Draws a rectangle using the pen.

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

  • Draws a second rectangle to demonstrate the difference.

public void ScaleTransform_Example2(PaintEventArgs e)

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

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

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

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

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98

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

.NET Framework

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