class EditableTree : public TreeCtrl {
public:
	EditableTree() : selId_(-1) {
		editNode.SetCtrl(edit);
		OpenDeep(0, true);
	}
	
	void AddNode() {
		CloseEdit();
		
		int selId_ = Add(0);

   		edit.SetData("Node" + AsString(selId_));
   		edit.Show();
    	        edit.AutoSize();
		edit.SetFocus();//at first not select because IsOpen is false => why?

		SetNode(selId_, editNode);
	}
	
	void CloseEdit() {
		if (selId_ > 0) {
			SetNode(selId_, Node(~edit));
			edit.Hide();
		}
	}
	
private:
	int selId_;
    EditString edit;
   	TreeCtrl::Node editNode;
};

GUI_APP_MAIN
{	
	TopWindow wnd;
	Button btn;
	wnd.Add(btn.SetLabel("Add").LeftPos(10).TopPos(10));
	
	EditableTree tree;
	wnd.Add(tree.VSizePos(40).HSizePos());

	btn <<= callback(&tree, &EditableTree::AddNode);
        wnd.Run();
}