Java AWT PopupMenu

2025 年 3 月 17 日 | 阅读 1 分钟

PopupMenu 可以在组件内的特定位置动态弹出。它继承了 Menu 类。

AWT PopupMenu 类声明

Java AWT PopupMenu 示例

import java.awt.*;
import java.awt.event.*;
class PopupMenuExample
{
	 PopupMenuExample(){
         final Frame f= new Frame("PopupMenu Example");
         final PopupMenu popupmenu = new PopupMenu("Edit"); 
         MenuItem cut = new MenuItem("Cut");
         cut.setActionCommand("Cut");
         MenuItem copy = new MenuItem("Copy");
         copy.setActionCommand("Copy");
         MenuItem paste = new MenuItem("Paste");
         paste.setActionCommand("Paste");    
         popupmenu.add(cut);
         popupmenu.add(copy);
         popupmenu.add(paste);      
         f.addMouseListener(new MouseAdapter() {
            public void mouseClicked(MouseEvent e) {            
            	popupmenu.show(f , e.getX(), e.getY());
            }               
         });
         f.add(popupmenu); 
         f.setSize(400,400);
         f.setLayout(null);
         f.setVisible(true);
	 }
public static void main(String args[])
{
        new PopupMenuExample();
}
}

输出