Thread: My MouseInputListener methods aren't being called.

I have the following class which uses mousePressed, mouseDragged, and mouseReleased. I've thrown some breakpoints in these methods with jdb, but I find that they aren't triggered when I try and click on my canvas. I've been working on this for a few hours and can't figure out why. Could someone offer a second set of eyes?

Thanks,

import java.awt.BasicStroke;
import java.awt.Graphics2D;
import java.awt.Point;
import java.awt.event.MouseEvent;
import java.awt.geom.Rectangle2D;
import java.awt.image.BufferedImage;
import javax.swing.ImageIcon;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.event.MouseInputListener;
 
class Canvas extends JPanel implements MouseInputListener {
  private BufferedImage m_img;
  private Point m_refPoint;
  private JLabel m_container;
 
  public Canvas() {
    m_img = new BufferedImage(500, 500, BufferedImage.TYPE_INT_RGB);
    m_refPoint = null;
    m_container = new JLabel(new ImageIcon());
    m_container.setIcon(new ImageIcon(m_img));
    m_container.addMouseListener(this);
    m_container.addMouseMotionListener(this);
  }
 
  protected void draw(Point end, BufferedImage img) {
    Graphics2D g2 = img.createGraphics();
    g2.setPaint( m_selector.getFg() );
    g2.setStroke( new BasicStroke(2.0f) );
 
    g2.draw(new Rectangle2D.Float((float)m_refPoint.x,
                                  (float)m_refPoint.y, 
                                  (float)Math.abs(end.x-m_refPoint.x),
                                  (float)Math.abs(end.y-m_refPoint.y)));
 
    m_container.setIcon(new ImageIcon(img));
    repaint();
  }
 
  public void mousePressed(MouseEvent e) {
    m_refPoint = e.getPoint();
  }
 
  public void mouseDragged(MouseEvent e) {
    if (m_refPoint == null) return;
 
    Point end             = e.getPoint();
    BufferedImage scratch = new BufferedImage(m_img.getColorModel(),
                            m_img.copyData(null), 
                            m_img.getColorModel().isAlphaPremultiplied(),
                            null);
    draw( end, scratch );
  }
 
  public void mouseReleased(MouseEvent e) {
    if (m_refPoint == null) return;
    draw( e.getPoint(), m_img);
  }
 
  public void mouseClicked(MouseEvent e) {}
  public void mouseEntered(MouseEvent e) {}
  public void mouseExited (MouseEvent e) {}
  public void mouseMoved  (MouseEvent e) {}
}

The component with listeners is "JLabel m_container" which is a member of Canvas and holds an ImageIcon().

I use these so that when I use the mouse in the container, my methods are called:
m_container.addMouseListener(this);
m_container.addMouseMotionListener(this);



I think my problem is the sizing of the JLabel. I've tried setting m_container.setBackground(Color.BLACK); and everything is still the default colour. When I've loaded BufferedImages from files, JLabel get's resized properly, so I think the problem is in how I've created the BufferedImage.

I HATE layout managers, for 8 weeks now, these have been the most time consuming parts of my java course. I'm tempted to use a null layout manager and give up on scaling.

--- Update ---

Nevermind, I forgot:
this.add(m_container);