Re: how to use ToolTip' functions on a Graphics area?

Knute Johnson <>
Mon, 08 Jun 2009 14:54:23 -0700
Vinicius Pereira wrote:

Hi Knute Johnson,
Yes, I already try this,

But how can I add a Graphics to the Panel?
This is my realy problem.

The example you posted to John shows a different tooltip based on the
location on the panel. That is very easily done by overriding the
JComponent.getToolTipText(MouseEvent) method. See the modified example

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class test extends JApplet {
     public void init() {
         JPanel p = new JPanel() {
             public String getToolTipText(MouseEvent me) {
                 int x = me.getX();
                 int y = me.getY();
                 int halfH = getHeight() / 2;
                 int halfW = getWidth() / 2;

                 if (x < halfW && y < halfH)
                     return "Northwest";
                 else if (x > halfW && y < halfH)
                     return "Northeast";
                 else if (x < halfW && y > halfH)
                     return "Southwest";
                     return "Southeast";
         p.setPreferredSize(new Dimension(100,75));

     public static void main(String[] args) {
         EventQueue.invokeLater(new Runnable() {
             public void run() {
                 JFrame f = new JFrame();
                 test t = new test();


Knute Johnson
email s/nospam/knute2009/

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