關鍵字：Draw2d 連線 PolylineConnection

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    public class HelloWorld2 {
	public static void main(String args[]) {
		Shell shell = new Shell();
		shell.setText("Draw2d Hello World");
		shell.setSize(400, 400);
		shell.open();
		
		// create content 4 shell.
		createContent4Shell(shell);
		
		while (!shell.isDisposed ()) {
			if (!Display.getDefault().readAndDispatch ())
				Display.getDefault().sleep ();
		}
	}

	private static void createContent4Shell(Shell shell) {
		Panel rootFigure = new Panel();
		rootFigure.setLayoutManager(new XYLayout());
		
		IFigure figure1 = new Ellipse();
		IFigure figure2 = new Ellipse();
//		IFigure figure2 = new Triangle();
		
		// --------------------------------------------------------
		// add connection
		PolylineConnection connection = new PolylineConnection();
		connection.setSourceAnchor(new ChopboxAnchor(figure1));
		connection.setTargetAnchor(new ChopboxAnchor(figure2));
		// add connection
		// --------------------------------------------------------

		rootFigure.add(figure1,new Rectangle(10,10,60,30));
		rootFigure.add(figure2,new Rectangle(80,90,60,30));
		rootFigure.add(connection);
		
		LightweightSystem lws = new LightweightSystem(shell);
		lws.setContents(rootFigure);
	}
}
  

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連線也是一個Figure也要加到父Figure中去，要指定連線的兩個端點就行了。

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Draw2d 連線一