label setCursor not working when main frame is maximized
I have a label in a JInternalFrame. The label has a mouseListener on
it, to listen for clicks but also when the mouse is over the label.
When the mouse is over it, I want to change the cursor to a hand
cursor, and back to normal when exiting the label. All this works
when my frame & internal frame are their start up sizes, but if I
maximize the main JFrame and then move the mouse over the label, no
hand! But it's still clickable. For some reason teh setCursor isn't
working. But un-maximize the JFrame & things work again.
In the sample code below, I have 2 classes, the main application frame
that extends JFrame, and MyInternalFrame that extends JInternalFrame.
It's in the internal frame that holds the label & mouseListener.
Any help appreciated!!
import java.awt.BorderLayout;
import java.awt.Cursor;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import javax.swing.*;
public class TestLabelLink extends JFrame {
JDesktopPane desktop;
public TestLabelLink() {
super("Test");
setSize(400,400);
//Set up the GUI.
desktop = new JDesktopPane(); //a specialized layered pane
MyInternalFrame frame = new MyInternalFrame();
frame.setVisible(true); //necessary as of 1.3
desktop.add(frame);
try {
frame.setSelected(true);
} catch (java.beans.PropertyVetoException e) {}
setContentPane(desktop);
//Make dragging a little faster but perhaps uglier.
desktop.setDragMode(JDesktopPane.OUTLINE_DRAG_MODE);
}
//Quit the application.
protected void quit() {
System.exit(0);
}
/**
* Create the GUI and show it. For thread safety,
* this method should be invoked from the
* event-dispatching thread.
*/
private static void createAndShowGUI() {
//Make sure we have nice window decorations.
JFrame.setDefaultLookAndFeelDecorated(true);
//Create and set up the window.
TestLabelLink frame = new TestLabelLink();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
//Display the window.
frame.setVisible(true);
}
public static void main(String[] args) {
//Schedule a job for the event-dispatching thread:
//creating and showing this application's GUI.
javax.swing.SwingUtilities.invokeLater(new Runnable() {
public void run() {
createAndShowGUI();
}
});
}
}
class MyInternalFrame extends JInternalFrame {
JLabel label = new JLabel("<html><body><a href=\"\">click me</a></
body></html>");
public MyInternalFrame() {
super();
setSize(200,200);
this.getContentPane().add(label, BorderLayout.NORTH);
label.addMouseListener(new MouseAdapter() {
public void mouseClicked(MouseEvent e) {
System.out.println("bang!");
}
public void mouseEntered(MouseEvent e) {
label.setCursor(new Cursor(Cursor.HAND_CURSOR));
}
public void mouseExited(MouseEvent e) {
label.setCursor(new Cursor(Cursor.DEFAULT_CURSOR));
}
});
}
}