Region.MakeEmpty Method ()

 

Initializes this Region to an empty interior.

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

public void MakeEmpty()

The following code example demonstrates how to use the Region constructor and MakeEmpty method. This example is designed to be used with Windows Forms. Create a form and paste the following code into it. Call the FillEmptyRegion method in the form's Paint event-handling method, passing e as PaintEventArgs.

private void FillEmptyRegion(PaintEventArgs e)
{

    // Create a region from a rectangle.
    Rectangle originalRectangle = new Rectangle(40, 40, 40, 50);
    Region smallRegion = new Region(originalRectangle);

    // Call MakeEmpty.
    smallRegion.MakeEmpty();

    // Fill the region in red and draw the original rectangle
    // in black. Note there is nothing filled in.
    e.Graphics.FillRegion(Brushes.Red, smallRegion);
    e.Graphics.DrawRectangle(Pens.Black, originalRectangle);

}

.NET Framework
Available since 1.1
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