This question is related to my previous question : How To create A Large Size Custom Cursor In Java?
If you are curious about what is it used for, you can find a practical use case for an award winning password protection system called GATE [ Graphic Access Tabular Entry ] at : http://gatecybertech.net/
After the previous question I found a way to create a large custom cursor, and the working answer is posted in my previous post. But in order to achieve it, I have to click a checkbox first, now I want to be able to create a large custom cursor without first need to click a checkbox, so I modified my code to look like the following without a checkbox :
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.awt.image.*;
import java.io.*;
import javax.imageio.*;
import javax.swing.event.MouseInputAdapter;
public class Demo_Large_Custom_Cursor_Simple
{
static private MyGlassPane_Simple myGlassPane;
private static void createAndShowGUI()
{
JFrame frame=new JFrame("Demo_Large_Custom_Cursor_Simple");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
// JCheckBox changeButton=new JCheckBox("Custom Cursor \"visible\"");
// changeButton.setSelected(false);
Container contentPane=frame.getContentPane();
contentPane.setLayout(new FlowLayout());
// contentPane.add(changeButton);
JButton Button_1=new JButton("<Html><Table Cellpadding=7><Tr><Td>A</Td><Td>B</Td></Tr><Tr><Td>C</Td><Td>D</Td></Tr></Table></Html>");
Button_1.setPreferredSize(new Dimension(80,80));
Button_1.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent evt) { Out("Button 1"); } });
contentPane.add(Button_1);
JButton Button_2=new JButton("<Html><Table Cellpadding=7><Tr><Td>1</Td><Td>2</Td></Tr><Tr><Td>3</Td><Td>4</Td></Tr></Table></Html>");
Button_2.setPreferredSize(new Dimension(80,80));
Button_2.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent evt) { Out("Button 2"); } });
contentPane.add(Button_2);
JMenuBar menuBar=new JMenuBar();
JMenu menu=new JMenu("Menu");
menu.add(new JMenuItem("Do nothing"));
menuBar.add(menu);
frame.setJMenuBar(menuBar);
// Set up the glass pane, which appears over both menu bar and content pane and is an item listener on the change button.
// myGlassPane=new MyGlassPane_Simple(changeButton,menuBar,frame.getContentPane());
myGlassPane=new MyGlassPane_Simple(menuBar,frame.getContentPane());
// changeButton.addItemListener(myGlassPane);
frame.setGlassPane(myGlassPane);
frame.setLocationRelativeTo(null);
frame.pack();
frame.setVisible(true);
}
private static void out(String message) { System.out.print(message); }
private static void Out(String message) { System.out.println(message); }
public static void main(String[] args) { SwingUtilities.invokeLater(new Runnable() { public void run() { createAndShowGUI(); } }); }
}
// We have to provide our own glass pane so that it can paint.
class MyGlassPane_Simple extends JComponent implements ItemListener
{
Point point;
// public MyGlassPane_Simple(AbstractButton aButton,JMenuBar menuBar,Container contentPane)
public MyGlassPane_Simple(JMenuBar menuBar,Container contentPane)
{
// CBListener_Simple listener=new CBListener_Simple(aButton,menuBar,this,contentPane);
CBListener_Simple listener=new CBListener_Simple(menuBar,this,contentPane);
addMouseListener(listener);
addMouseMotionListener(listener);
}
// React to change button clicks.
public void itemStateChanged(ItemEvent e) { setVisible(e.getStateChange()==ItemEvent.SELECTED); }
protected void paintComponent(Graphics g)
{
try
{
if (point!=null)
{
// g.setColor(Color.red);
// g.fillOval(point.x-10,point.y-10,20,20);
BufferedImage image=ImageIO.read(new File("C:/Cursor_Crosshair.PNG"));
g.drawImage(image,point.x-39,point.y-39,null);
}
}
catch (Exception e) { }
}
public void setPoint(Point p) { point=p; }
}
// Listen for all events that our check box is likely to be interested in. Redispatch them to the check box.
class CBListener_Simple extends MouseInputAdapter
{
Toolkit toolkit;
Component liveButton;
JMenuBar menuBar;
MyGlassPane_Simple glassPane;
Container contentPane;
// public CBListener_Simple(Component liveButton,JMenuBar menuBar,MyGlassPane_Simple glassPane,Container contentPane)
public CBListener_Simple(JMenuBar menuBar,MyGlassPane_Simple glassPane,Container contentPane)
{
toolkit=Toolkit.getDefaultToolkit();
this.liveButton=liveButton;
this.menuBar=menuBar;
this.glassPane=glassPane;
this.contentPane=contentPane;
}
public void mouseMoved(MouseEvent e)
{
// redispatchMouseEvent(e,false);
redispatchMouseEvent(e,true);
}
public void mouseDragged(MouseEvent e) { redispatchMouseEvent(e,false); }
public void mouseClicked(MouseEvent e) { redispatchMouseEvent(e,false); }
public void mouseEntered(MouseEvent e) { redispatchMouseEvent(e,false); }
public void mouseExited(MouseEvent e) { redispatchMouseEvent(e,false); }
public void mousePressed(MouseEvent e) { redispatchMouseEvent(e,false); }
public void mouseReleased(MouseEvent e) { redispatchMouseEvent(e,true); }
// A basic implementation of redispatching events.
private void redispatchMouseEvent(MouseEvent e,boolean repaint)
{
Point glassPanePoint=e.getPoint();
Container container=contentPane;
Point containerPoint=SwingUtilities.convertPoint(glassPane,glassPanePoint,contentPane);
if (containerPoint.y<0)
{ // We're not in the content pane
if (containerPoint.y+menuBar.getHeight()>=0)
{
// The mouse event is over the menu bar. Could handle specially.
}
else
{
// The mouse event is over non-system window decorations, such as the ones provided by the Java look and feel. Could handle specially.
}
}
else
{
// The mouse event is probably over the content pane. Find out exactly which component it's over.
Component component=SwingUtilities.getDeepestComponentAt(container,containerPoint.x,containerPoint.y);
// if ((component!=null) && (component.equals(liveButton)))
if ((component!=null))
{
// Forward events over the check box.
Point componentPoint=SwingUtilities.convertPoint(glassPane,glassPanePoint,component);
component.dispatchEvent(new MouseEvent(component,e.getID(),e.getWhen(),e.getModifiers(),componentPoint.x,componentPoint.y,e.getClickCount(),e.isPopupTrigger()));
}
}
// Update the glass pane if requested.
if (repaint)
{
glassPane.setPoint(glassPanePoint);
glassPane.repaint();
}
}
}
The 3 classes in this app are :
Demo_Large_Custom_Cursor_Simple.java
MyGlassPane_Simple.java
CBListener_Simple.java
They are all the classes needed to run this demo app.
The Cursor_Crosshair.PNG image looks like this : 
But, it's not showing large custom cursor any more, I wonder what I did wrong, what should I do based on this existing code to show large custom cursor when mouse enters the app window ?
CBListener_Simpleand the png file. Please post minimal reproducible example