WPF

private void AllToUI(MenuNode node, ItemCollection items)
{
    foreach (MenuNode subNode in node.Nodes) {
        NodeToUI(node, items);
        if (subNode.Nodes.Count > 0)
	        AllToUI(subNode, items);
    }
}
private void NodeToUI(MenuNode node, ItemCollection items)
{
    TreeViewItem item = new TreeViewItem();
    StackPanel itemContent = new StackPanel() {
        Orientation = Orientation.Horizontal
    };
    item.Header = itemContent;
    if (node.GetBitmap() != null)
        itemContent.Children.Add(new Image {
	        Height = 20,
	        Source = node.GetBitmap()
        });
    Label content = new Label { Content = node.Header };
    if (!System.IO.File.Exists(node.File))
        content.Foreground = Brushes.Gray;
    itemContent.Children.Add(content);
    items.Add(item);
    item.Expanded += new RoutedEventHandler(item_Expanded);
    item.MouseDoubleClick += new MouseButtonEventHandler(item_MouseDoubleClick);
    item.Tag = node;
}

void item_MouseDoubleClick(object sender, MouseButtonEventArgs e)
{
    if (treeMenu.SelectedItem == e.Source) {
        e.Handled = true;
        packLaunch();
    }
}