5-15.txt

清华大学第二版

public void go(){
	f = new Frame("Two listeners example");
	f.add("North", new Label("Click and drag the mouse"));
	tf = new TextField(30);
	f.add("South", tf);
	
	f.addMouseMotionListener(new MouseMotionAdapter(){
	public void mouseDragged(MouseEvent e){
		String s = "Mouse dragging: X=" +e.getX() +"Y="+ e.getY();
		tf.setText(s);
		}
	});   // <- 注意括号在这里的用法
	
	f.addMouseListener(new MouseEventHandler());
	f.setSize(300, 200);
	f.setVisible(true);
}