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POJava (Swing): MouseMoved not working at all
 

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    <p>This is driving me nuts. It must be an extremely simple problem, but I can't possibly see it.</p> <p>Basically mouseMoved is NEVER called. Below is the code. </p> <pre><code>public class MouseMotionThing { public static void main(String[] args) { SwingUtilities.invokeLater(new Runnable() { @Override public void run() { JFrame jFrame = new JFrame(); jFrame.setContentPane(new ContentPane()); jFrame.setSize(400, 400); jFrame.setVisible(true); jFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); } }); } } </code></pre> <p>And my panel. This implementation uses a MouseInputListener:</p> <pre><code>class ContentPane extends JPanel implements MouseInputListener { int x = 0, y = 0; public ContentPane() { setOpaque(true); addMouseListener(this); addMouseMotionListener(this); } @Override protected void paintComponent(Graphics g) { super.paintComponent(g); g.drawLine(0, 0, x, y); } @Override public void mouseDragged(MouseEvent e) { System.out.println("Mouse Dragged!"); } @Override public void mouseMoved(MouseEvent e) { System.out.println("CALLED MOUSE MOVED"); x = e.getX(); y = e.getY(); repaint(); } @Override public void mouseClicked(MouseEvent e) { } @Override public void mousePressed(MouseEvent e) { } @Override public void mouseReleased(MouseEvent e) { } @Override public void mouseEntered(MouseEvent e) { } @Override public void mouseExited(MouseEvent e) { } } </code></pre> <p>whereas this alternative implementation uses only a MouseMotionListener:</p> <pre><code>class ContentPane extends JPanel implements MouseMotionListener { int x = 0, y = 0; public ContentPane() { setOpaque(true); addMouseMotionListener(this); } @Override protected void paintComponent(Graphics g) { super.paintComponent(g); g.drawLine(0, 0, x, y); } @Override public void mouseDragged(MouseEvent e) { System.out.println("Mouse Dragged!"); } @Override public void mouseMoved(MouseEvent e) { System.out.println("CALLED MOUSE MOVED"); x = e.getX(); y = e.getY(); repaint(); } } </code></pre> <p>In none of the above alternative implementations is mouseMoved EVER called. I'm adding the right listeners every single time, but it's simply not working. mouseDragged works fine though. What am I missing?</p> <p>LE: I tested the code on Ubuntu 12.10 &amp; JDK 7, worked fine. Then when I went back to my W8 machine, it started working. I did absolutely nothing more than restart my laptop. I couldn't reproduce the problem nor track it down, but I will come back if I get it again and manage to find something.</p>
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    1. COEither `ContentPane` works for me.
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    2. COYep, work for me too! Your code looks fine as well.
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    3. CODoes your JFrame have focus? Maybe try clicking on the panel and then moving around on it
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      1. USdrewmoore
 

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