Copyright (C) 2001, Geert Vernaeve. All Rights Reserved. 

package test;

import java.awt.*;
import java.awt.event.*;

 Conclusion:
  Lightweight components don't receive key events.
  Under JDK1.2, heavyweight components receive key events if the mouse is over them
  Under Kaffe, nobody receives key events! (except the Frame? Check!)
  ** SOLUTION: use requestFocus() ! Simple but you have to know it! :-)))
  

public class AwtKeyTest extends Panel implements KeyListener {
	public AwtKeyTest() {
		setLayout(new FlowLayout());
		KeyTestView ktv;
		add(ktv = new KeyTestView());
		ktv.setBackground(Color.black);
		add(ktv = new KeyTestView());
		ktv.setBackground(Color.white);
		addKeyListener(this);
		// enableEvents(AWTEvent.xxx_EVENT_MASK);
	}

	public static void main(String [] args) {
		Frame frame = new Frame("test");
		frame.add("Center",new AwtKeyTest());
		frame.pack();
		frame.show();
	}
	
	public void keyPressed(KeyEvent evt) {}
	public void keyReleased(KeyEvent evt) {}
	public void keyTyped(KeyEvent evt) {
		System.out.println("container: typed "+evt.getKeyChar());
	}
}

class KeyTestView extends Component implements KeyListener,MouseListener {
	public KeyTestView() {
		addKeyListener(this);
		addMouseListener(this);
		//enableEvents(AWTEvent.KEY_EVENT_MASK);
	}
	
	public Dimension getPreferredSize() {
		return new Dimension(100,100);
	}
	
	public void paint(Graphics g) {
		g.setColor(getBackground());
		g.fillRect(0,0,getSize().width,getSize().height);
	}

	public void processKeyEvent(KeyEvent evt) {
		System.out.println("Key event "+evt);
		super.processKeyEvent(evt);
	}

	public void keyPressed(KeyEvent evt) {}
	public void keyReleased(KeyEvent evt) {}
	public void keyTyped(KeyEvent evt) {
		System.out.println("component "+this+": typed "+evt.getKeyChar());
	}
	
	public void mouseClicked(MouseEvent evt) {}
	public void mouseEntered(MouseEvent evt) {}
	public void mouseExited(MouseEvent evt) {}
	public void mousePressed(MouseEvent evt) {}
	public void mouseReleased(MouseEvent evt) {
		requestFocus();
		System.out.println("component "+this+": requestFocus()");
	}	
}