mouselistenerdemo.java

来自「java 完全探索的随书源码」· Java 代码 · 共 77 行

// MouseListenerDemo.java

import java.awt.*;
import java.awt.event.*;

class MouseListenerDemo extends Frame
                        implements MouseListener, MouseMotionListener
{
   PopupMenu popup;

   MouseListenerDemo (String title)
   {
      super (title);

      popup = new PopupMenu ("Hello");
      popup.add (new MenuItem ("First"));
      popup.add (new MenuItem ("Second"));
      popup.addSeparator ();
      popup.add (new MenuItem ("Third"));

      add (popup);

      addMouseListener (this);
      addMouseMotionListener (this);

      setSize (100, 100);

      setVisible (true);
   }

   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");

      if (e.isPopupTrigger ())
          popup.show (e.getComponent (), e.getX (), e.getY ());
   }

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

      if (e.isPopupTrigger ())
          popup.show (e.getComponent (), e.getX (), e.getY ());
   }

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

   public void mouseMoved (MouseEvent e)
   {
      System.out.println ("Mouse Moved");
   }

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

   public static void main (String [] args)
   {
      new MouseListenerDemo ("Mouse Listener Demo");
   }
}