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Article View: borland.public.jbuilder.java.swing
Article #1267

Re: Mouse moved event

#1267
From: George
Date: Wed, 10 Mar 2004 17:11
122 lines
4260 bytes
John

Here is the code that demonstrates the problem.  There are 2 classes:
TestMouse and ObjectListMouseHandler.

TIA.
George


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

public class TestMouse extends JFrame {
  public TestMouse() {
    list.setModel(new ListModel());
    list.setFixedCellWidth(200);
    list.addMouseListener(new ObjectListMouseHandler());
    scrollPane.setViewportView(list);
    panel.setLayout(new CardLayout());
    panel.add(scrollPane, "Tab1");
    this.getContentPane().add(panel);
    this.setSize(this.getToolkit().getScreenSize());
  }

  public static void main(String[] args) {
    TestMouse tm = new TestMouse();
    tm.show();
  }

  JPanel panel = new JPanel();
  JList list = new JList();
  JScrollPane scrollPane = new JScrollPane();

  private class ListModel extends AbstractListModel {
    public Object getElementAt(int index) {
      return Integer.toString(index);
    }

    public int getSize() {
      return 50;
    }

  }
}

/*--------------------------------------------------------------------------
------------------------------------*/

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

/**
 * <p>ObjectListMouseHandler</p>
 * <p>Mouse handler class for the database object list.</p>
*/
public class ObjectListMouseHandler extends MouseInputAdapter {
  public ObjectListMouseHandler() {
  }

  public void mouseClicked(MouseEvent e) {
    System.out.println("Mouse clicked");

  }
  public void mouseEntered(MouseEvent e) {
    System.out.println("Mouse entered ");
  }

  public void mouseExited(MouseEvent e) {
    System.out.println("Mouse exited ");
  }

  public void mousePressed(MouseEvent e) {
    System.out.println("Mouse pressed ");
   }

  public void mouseReleased(MouseEvent e) {
    System.out.println("Mouse released");
   }

   public void mouseDragged(MouseEvent e) {
    System.out.println("Mouse dragged");
   }

  public void mouseMoved(MouseEvent e) {
    System.out.println("Mouse moved at " + e.getX() + " : " + e.getY());
  }

  private JPopupMenu popupMenu;
  private JList list;
}


"John McGrath [TeamB]" <ng-b@JPMcGrath.net> wrote in message
news:404e24cf@newsgroups.borland.com...
> On 3/8/2004 at 10:27:09 AM, George wrote:
>
> > I have a subclassed MouseInputAdapter to handle mouse events
> > on the JList.  I find that I receive all events except
> > mouseMoved(MouseEvent e).  This method never gets called.
>
> This should work.  Can you provide a runnable sample application that
> demonstrates the problem?
>
> > The documentations for mouseMoved says "Invoked when the mouse cursor
> > has been moved onto a component but no buttons have been pushed. "
> > Not sure how this differs from mouseEntered which is described as
> > "Invoked when the mouse enters a component. "
>
> A single mouseEntered event occurs when the mouse moves from outside
> the bounds of the component to inside its bounds.  The mouseMoved event
> will occur multiple times as you move the mouse within the component.
>
> -- 
> Regards,
>
> John McGrath [TeamB]
>
> ---------------------------------------------------
> Before sending me e-mail, please read:
>     http://www.JPMcGrath.net/newsgroups/e-mail.html
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Subject: Re: Mouse moved event
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