|
|
|
Tips & Tricks |
| |
To add it to the Applet you need to use the
Swing component set.
In the program code given below, we have used
MouseEvent.isPopupTrigger() method to trigger
the MouseEvent that pops up the menu. The
example below shows the triggering of a popup
menu and its activation through a command
button.
Code of Program: PopupMenuDemo.java
import java.awt.*;
import java.awt.event.*;
import java.applet.Applet;
public class PopupMenuDemo extends Applet{
Button b;
TextField msg;
PopupAppMenu m;
public PopupMenuDemo(){
setSize(200, 200);
b = new Button(“Pop-up Menu”);
add(b, BorderLayout.NORTH);
msg = new TextField();
msg.setEditable(false);
add(msg, BorderLayout.SOUTH);
m = new PopupAppMenu(this);
add(m);
b.addActionListener(new
ActionListener(){
public void actionPerformed(ActionEvent e){
m.show(b, 20, 20);
}
});
addMouseListener(new MouseAdapter(){
public void mousePressed(MouseEvent e){
if (e.isPopupTrigger())
m.show(e.getComponent(), e.getX(),
e.getY());
}
public void mouseReleased(MouseEvent e){
if (e.isPopupTrigger())
m.show(e.getComponent(), e.getX(),
e.getY());
}
});
}
public static void main(String[] args){
popupMenuDemo app = new
PopupMenuDemo();
app.setVisible(true);
|
|
}
class PopupAppMenu extends PopupMenu
implements ActionListener{
PopupMenuDemo ref;
public PopupAppMenu(PopupMenuDemo ref){
super(“File”);
this.ref = ref;
MenuItem mi;
add(mi = new MenuItem(“Copy”));
mi.addActionListener(this);
add(mi = new MenuItem(“Open”));
mi.addActionListener(this);
add(mi = new MenuItem(“Cut”));
mi.addActionListener(this);
add(mi = new MenuItem(“Paste”));
mi.addActionListener(this);
}
public void actionPerformed(ActionEvent e){
String item = e.getActionCommand();
ref.msg.setText(“Option Selected: “ + item);
}
}
PopupMenuDemo.html
<HTML>
<HEAD>
</HEAD>
<BODY>
<APPLET ALIGN=”CENTER”
CODE=”PopupMenuDemo.class”
WIDTH=”800" HEIGHT=”500"></APPLET>
</BODY>
</HTML>
Run the program:
C:\newprgrm>javac PopupMenuDemo.java
C:\newprgrm>appletviewer
PopupMenuDemo.html
|
|
Jan 2007 | Java Jazz Up | 97 |
|
| |
| View All Topics |
| All Pages of this Issue |
Pages:
1,
2,
3,
4,
5,
6,
7,
8,
9,
10,
11,
12,
13,
14,
15,
16,
17,
18,
19,
20,
21,
22,
23,
24,
25,
26,
27,
28,
29,
30,
31,
32,
33,
34,
35,
36,
37,
38,
39,
40,
41,
42,
43,
44,
45,
46,
47,
48,
49,
50,
51,
52,
53 ,
54,
55,
56,
57,
58,
59,
60,
61,
62,
63 ,
64,
65 ,
66 ,
67 ,
68 ,
69 ,
70 ,
71 ,
72 ,
73 ,
74 ,
75 ,
76 ,
77 ,
78 ,
79 ,
80 ,
81 ,
82 ,
83,
84 ,
85 ,
86,
87 ,
88,
89 ,
90 ,
91 ,
92 ,
93 ,
94 ,
95 ,
96 ,
97 ,
98 ,
99 ,
100 ,
101 ,
102 ,
103,
104 ,
105 ,
106,
107,
Download PDF |
|
|
|
|
|
|
| |
| |
|
