void HandleButtonEdithandleClicked(object sender, EventArgs e)
        {
            TreeIter selectedIter;

            if (styleTreeview.Selection.GetSelected(out selectedIter))
            {
                var editor = new ColorShemeEditor(this);
                editor.SetSheme((Mono.TextEditor.Highlighting.ColorScheme) this.styleStore.GetValue(selectedIter, 1));
                MessageService.RunCustomDialog(editor, dialog);
                editor.Destroy();
            }
        }
		void HandleButtonEdithandleClicked (object sender, EventArgs e)
		{
			TreeIter selectedIter;
			if (styleTreeview.Selection.GetSelected (out selectedIter)) {
				using (var editor = new ColorShemeEditor (this)) {
					var colorScheme = (Mono.TextEditor.Highlighting.ColorScheme)this.styleStore.GetValue (selectedIter, 1);
					editor.SetSheme (colorScheme);
					MessageService. ShowCustomDialog (editor, dialog);
				}
			}
		}