Registering listener objects

Listing 13 instantiates and registers two different Listener objects on MyFrame.

First is a WindowListener object

• to terminate program when user closes MyFrame.

Second is a MouseListener object

• to process mouse events on MyFrame.

    displayWindow.addWindowListener(
                         new WProc1());
    displayWindow.addMouseListener(
         new MouseProc(displayWindow));
  }//end constructor
}//end class GUI definition