Graphics.SetClip Method (Region, CombineMode)


Sets the clipping region of this Graphics to the result of the specified operation combining the current clip region and the specified Region.

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

public void SetClip(
	Region region,
	CombineMode combineMode


Type: System.Drawing.Region

Region to combine.

Type: System.Drawing.Drawing2D.CombineMode

Member from the CombineMode enumeration that specifies the combining operation to use.

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 small rectangle for the clipping region.

  • Sets the clipping region to the rectangle with the Replace member.

  • Fills a large rectangle with a solid black brush.

The result is a small, filled, black rectangle.

private void SetClipRegionCombine(PaintEventArgs e)

    // Create region for clipping.
    Region clipRegion = new Region(new Rectangle(0, 0, 100, 100));

    // Set clipping region of graphics to region.
    e.Graphics.SetClip(clipRegion, CombineMode.Replace);

    // Fill rectangle to demonstrate clip region.
    e.Graphics.FillRectangle(new SolidBrush(Color.Black), 0, 0, 500, 300);

.NET Framework
Available since 1.1
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