diff -r 3145aadca3d2 -r 0c551e8818e0 External/Aga.Controls/Tree/Input/InputWithControl.cs
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/External/Aga.Controls/Tree/Input/InputWithControl.cs	Sun May 27 15:16:19 2012 +0000
@@ -0,0 +1,30 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace Aga.Controls.Tree
+{
+	internal class InputWithControl: NormalInputState
+	{
+		public InputWithControl(TreeViewAdv tree): base(tree)
+		{
+		}
+
+		protected override void DoMouseOperation(TreeNodeAdvMouseEventArgs args)
+		{
+			if (Tree.SelectionMode == TreeSelectionMode.Single)
+			{
+				base.DoMouseOperation(args);
+			}
+			else if (CanSelect(args.Node))
+			{
+				args.Node.IsSelected = !args.Node.IsSelected;
+				Tree.SelectionStart = args.Node;
+			}
+		}
+
+		protected override void MouseDownAtEmptySpace(TreeNodeAdvMouseEventArgs args)
+		{
+		}
+	}
+}