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Pen.ScaleTransform Method (Single, Single)

Scales the local geometric transformation by the specified factors. This method prepends the scaling matrix to the transformation.

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

public void ScaleTransform(
	float sx,
	float sy


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.

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_Example1(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);

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

.NET Framework

Supported in: 4.5.2, 4.5.1, 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

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

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