请教gef怎样创建ImageFigure控件，急！

Question

有没有eclipse插件开发的高手啊，偶刚开始学插件开发，碰到以下问题阻塞，请高手解答！
以下代码运行后，图像框出不来！
 private static void testImage()
    {
        Shell shell = new Shell();
        LightweightSystem lws = new LightweightSystem(shell);
        Figure parent = new Figure();
        parent.setLayoutManager(new XYLayout());
        lws.setContents(parent);                
        ImageFigure image = new ImageFigure(null);    
        image.setBackgroundColor(ColorConstants.orange);
        image.setBounds(new Rectangle(10,70,80,20));
        parent.add(image, new Rectangle(20,90,100,40));
        shell.setSize(400,300);
        shell.open();
        shell.setText("Example");
        Display display = Display.getDefault();
        while (!shell.isDisposed())
        {
          if (!display.readAndDispatch())
          display.sleep ();
        }
            }