Hi, please have a look to the following article: http://www.codeproject.com/listctrl/listcheckbox.asp[^] Best regards Holger Persch

Splitters are not a built-in control, you'll need to code them yourself. For a good reference, check out MFC Internals which goes into painstaking detail on MFC's splitters. --Mike-- Just released - RightClick-Encrypt v1.4 - Adds fast & easy file encryption to Explorer My really out-of-date homepage Sonork-100.19012 Acid_Helm

It's called a splitter

Type t = Type.GetType("System.Windows.Forms.TreeNode"); object[] param = new object[0]; ConstructorInfo[] ci = t.GetConstructors(); object o = ci[0].Invoke (BindingFlags.CreateInstance,null,param,null); Be sure to pass param with expected binding for one of the TreeNode constructor (in your case, that's a String object).