如何实现最小化到托盘的效果类似QQ

Question

请教如何将界面作成最小化到托盘的效果

Answer 1

可以参考下面两个开源项目:
1.Windows Tray Icon ( http://jeans.studentenweb.org/java/trayicon/trayicon.html )
2.SysTray for Java ( http://systray.sourceforge.net/ )
 
这里有一段引用例子：
import java.awt.*;
import java.awt.event.*;
import java.io.InputStream;
import java.net.URI;public class GoMustang
{
   private TrayIcon trayIcon;
   private String actionMessage = "...";
   
   public static void main (String [] args) throws Exception
   {
      
     SplashScreen splashScreen = SplashScreen.getSplashScreen ();
      if (splashScreen != null)
      {
         pause(3000);
         splashScreen.close();
      }
     
      GoMustang mustang = new GoMustang();
      mustang.createTrayIcon();
   }   public void createTrayIcon() throws Exception
   {
      if (SystemTray.isSupported ())
      {
        System.out.println("System Tray Supported. Creating TrayIcon...");
            
        // create launch browser menu item
        MenuItem launchBrowserItem = new MenuItem("Launch Browser");
        // create action listener for lauch browswer menu item
        ActionListener launchListener = new ActionListener() 
        {
            public void actionPerformed(ActionEvent e) 
            {
              if (Desktop.isDesktopSupported()) 
              {
                 actionMessage = "Launched Browser";
                 try
                 {
                    trayIcon.displayMessage("GoMustang!","Lauching Browser...", TrayIcon.MessageType.INFO);
                    Desktop desktop = Desktop.getDesktop();
                    desktop.browse(new URI("http://localhost/"));
                    trayIcon.setToolTip("GoMustang!");
                 }
                 catch(Exception exp)
                 {                 
                 }
              }
            }
        };        
        // add listener to launch browser menu item
        launchBrowserItem.addActionListener(launchListener);        // create exit menu item
        MenuItem exitItem = new MenuItem("Exit");
        // create action listeners for exit menu items
        ActionListener exitListener = new ActionListener() 
        {
            public void actionPerformed(ActionEvent e) 
            {
                System.exit(0);
            }
        };
        // add action listener to exit menu item
        exitItem.addActionListener(exitListener);
        
        // create popup menu
        PopupMenu popup = new PopupMenu();        // Add exit and launch browser menu items to Popup Menu
        // Order in which MenuItems are added to PopupMenu determines the order in which they are displayed
        popup.add(launchBrowserItem);
        System.out.println("Added Launch Browser MenuItem To PopupMenu");
        
        // add exit menutime to popup
        popup.add(exitItem);
        System.out.println("Added Exit MenuItem To PopupMenu");
                
        // Get the tray icon's image from JAR 
        InputStream in = getClass().getResourceAsStream("gomustang.gif");
        byte buffer[] = new byte[in.available()];
        for (int i = 0, n = in.available(); i<n; i++)
            buffer[i] = (byte)in.read();        
        Image image = Toolkit.getDefaultToolkit().createImage(buffer);
        System.out.println("Retreived TrayIcon Image From JAR");        // Create system tray Icon with Image, title text and Popup menu we just created
        trayIcon = new TrayIcon(image, "Go Mustang!", popup);
        
        // The imagesize adjusts to available space
        trayIcon.setImageAutoSize(true);
        
        // Create Action Listeners. It displays the Message
        ActionListener actionListener = new ActionListener() 
        {
            public void actionPerformed(ActionEvent e) 
            {
                trayIcon.displayMessage("Latest Gallops", actionMessage, TrayIcon.MessageType.INFO);
            }
        };
        trayIcon.addActionListener(actionListener);
        System.out.println("Added ActionListener To TrayIcon");        
        // create Mouse Listeners. These currently do not do much
        MouseListener mouseListener = new MouseListener() 
        {
            public void mouseClicked(MouseEvent e) 
            {
                System.out.println("TrayIcon - Mouse Clicked");                 
            }            public void mouseEntered(MouseEvent e) 
            {
                System.out.println("TrayIcon - Mouse Entered");                 
            }            public void mouseExited(MouseEvent e) 
            {
                System.out.println("TrayIcon - Mouse Exited");                 
            }            public void mousePressed(MouseEvent e) 
            {
                System.out.println("TrayIcon - Mouse Pressed");                 
            }            public void mouseReleased(MouseEvent e) 
            {
                System.out.println("TrayIcon - Mouse Released");                 
            }
        };
        trayIcon.addMouseListener(mouseListener);
        System.out.println("Added MouseListener To TrayIcon");        SystemTray systemTray = SystemTray.getSystemTray();
        systemTray.add(trayIcon);
        System.out.println("...TrayIcon Successfully Added To SystemTray");
    }
    else
    {
        System.out.println ("SystemTray Not Supported By Operating System");
    }
   }
   
   public static void pause(int milliSeconds) throws Exception
   { 
      System.out.println("Pausing For " + milliSeconds/1000 + " Seconds...");      
      Thread.sleep (milliSeconds); // Pause milli seconds 
   }
}

Answer 2

去看了一下SysTray for Java，非常方便！