強！簡潔！SWT實現任務欄圖標（系統托盤），帶菜單和ToolTip

1 import org.eclipse.swt.SWT;
2 import org.eclipse.swt.events.ShellListener;
3 import org.eclipse.swt.graphics.Image;
4 import org.eclipse.swt.internal.win32.OS;
5 import org.eclipse.swt.widgets.Display;
6 import org.eclipse.swt.widgets.Event;
7 import org.eclipse.swt.widgets.Listener;
8 import org.eclipse.swt.widgets.Menu;
9 import org.eclipse.swt.widgets.MenuItem;
10 import org.eclipse.swt.widgets.Shell;
11 import org.eclipse.swt.widgets.Tray;
12 import org.eclipse.swt.widgets.TrayItem;
13    
14 public class MyTray {
15         public static void main(String[] args) {
16                 Display display = new Display();
17                 Shell shell = new Shell(display);
18                 // 下面兩句的效果是：在任務欄不顯示
19                 // 感謝CSDN會員：GhostValley(鬼谷)
20                 final int hWnd = shell.handle;
21                 OS.SetWindowLong(hWnd, OS.GWL_EXSTYLE, OS.WS_EX_CAPTIONOKBTN);
22                 Image image = new Image(display, 16, 16);
23                 final Tray tray = display.getSystemTray();
24                 if (tray == null) {
25                         System.out.println("The system tray is not available");
26                 } else {
27                         final TrayItem item = new TrayItem(tray, SWT.NONE);
28                         item.setToolTipText("SWT TrayItem");
29                         item.addListener(SWT.Show, new Listener() {
30                                 public void handleEvent(Event event) {
31                                         System.out.println("show");
32                                 }
33                         });
34                         item.addListener(SWT.Hide, new Listener() {
35                                 public void handleEvent(Event event) {
36                                         System.out.println("hide");
37                                 }
38                         });
39                         item.addListener(SWT.Selection, new Listener() {
40                                 public void handleEvent(Event event) {
41                                         System.out.println("selection");
42                                 }
43                         });
44                         item.addListener(SWT.DefaultSelection, new Listener() {
45                                 public void handleEvent(Event event) {
46                                         System.out.println("default selection");
47                                         // show main
48                                         Shell s = event.display.getShells()[0];
49                                         s.setVisible(true);
50                                         s.setMinimized(false);
51                                 }
52                         });
53                         final Menu menu = new Menu(shell, SWT.POP_UP);
54                         for (int i = 0; i < 8; i++) {
55                                 MenuItem mi = new MenuItem(menu, SWT.PUSH);
56                                 mi.setText("Item" + i);
57                         }
58                         item.addListener(SWT.MenuDetect, new Listener() {
59                                 public void handleEvent(Event event) {
60                                         menu.setVisible(true);
61                                 }
62                         });
63                         item.setImage(image);
64                 }
65                 shell.addShellListener(new ShellListener() {
66                         public void shellDeactivated(org.eclipse.swt.events.ShellEvent e) {
67                         }
68    
69                         public void shellActivated(org.eclipse.swt.events.ShellEvent e) {
70                         }
71    
72                         public void shellClosed(org.eclipse.swt.events.ShellEvent e) {
73                         }
74    
75                         public void shellDeiconified(org.eclipse.swt.events.ShellEvent e) {
76                         }
77    
78                         public void shellIconified(org.eclipse.swt.events.ShellEvent e) {
79                                 // 最小化時不顯示在任務欄
80                                 // 感謝CSDN會員：pdvv(我愛花貓)
81                                 ((Shell) e.getSource()).setVisible(false);
82                         }
83                 });
84                 shell.setBounds(50, 50, 300, 200);
85                 shell.open();
86                 while (!shell.isDisposed()) {
87                         if (!display.readAndDispatch())
88                                 display.sleep();
89                 }
90                 image.dispose();
91                 display.dispose();
92         }
93 }