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dotnet-desktop-guide/framework/winforms/advanced/using-regions.md

@@ -0,0 +1,26 @@
+---
+title: "Using Regions"
+ms.date: "03/30/2017"
+helpviewer_keywords: 
+  - "examples [Windows Forms], regions"
+  - "regions [Windows Forms], using"
+ms.assetid: 7809295b-870f-4107-a8b5-8386c298acd5
+---
+# Using Regions
+The GDI+ <xref:System.Drawing.Region> class allows you to define a custom shape. The shape can be made up of lines, polygons, and curves.  
+  
+ Two common uses for regions are hit testing and clipping. Hit testing is determining whether the mouse was clicked in a certain region of the screen. Clipping is restricting drawing to a certain region.  
+  
+## In This Section  
+ [How to: Use Hit Testing with a Region](how-to-use-hit-testing-with-a-region.md)  
+ Shows how to use a <xref:System.Drawing.Region> to perform a hit test.  
+  
+ [How to: Use Clipping with a Region](how-to-use-clipping-with-a-region.md)  
+ Explains how to set the clipping region for a <xref:System.Drawing.Graphics> object.  
+  
+## Reference  
+ <xref:System.Drawing.Region>  
+ Describes this class and contains links to all of its members.  
+  
+ <xref:System.Drawing.Graphics>  
+ Describes this class and contains links to all of its members.