Java API 分類導覽 - javax.swing.JPopupMenu addPopupMenuListener()

JPopupMenu 類別 (class) 的 addPopupMenuListener() 方法 (method) 用來設定快顯功能表的相關事件處理。



修飾子與參數

public void addPopupMenuListener(PopupMenuListener l)

addPopupMenuListener() 沒有回傳值 (return value) ，需要一個 PopupMenuListener 型態 (type) 的物件 (object) 常數當參數 (paramenter) 。


舉例如下

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.*;

public class addPopupMenuListenerDemo extends MouseAdapter implements PopupMenuListener {
    JFrame frame;
    JMenuItem item1, item2;
    JPopupMenu popupmenu;
    
    public static void main(String[] args) {
        new addPopupMenuListenerDemo();
    }
    
    public addPopupMenuListenerDemo() {
        frame = new JFrame("SwingDemo");
        frame.setSize(600, 400);
        frame.setLayout(new GridLayout(6, 4));
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.addMouseListener(this);
        
        popupmenu = new JPopupMenu();
        item1 = new JMenuItem("one");
        item2 = new JMenuItem("two");
        popupmenu.add(item1);
        popupmenu.add(item2);
        popupmenu.addPopupMenuListener(this);
        
        frame.add(popupmenu);
        frame.setVisible(true);
    }
    
    public void mousePressed(MouseEvent e) {
        popupmenu.show(e.getComponent(), e.getX(), e.getY());
    }
    
    public void popupMenuCanceled(PopupMenuEvent e)  {
        System.out.println("popupMenuCanceled");
    }
    
    public void popupMenuWillBecomeInvisible(PopupMenuEvent e) {
        System.out.println("popupMenuWillBecomeInvisible");
    }
    
    public void popupMenuWillBecomeVisible(PopupMenuEvent e)  {
        System.out.println("popupMenuWillBecomeVisible");
    }
}

/* 《程式語言教學誌》的範例程式
    http://pydoing.blogspot.com/
    檔名：addPopupMenuListenerDemo.java
    功能：示範 Java 程式 
    作者：張凱慶
    時間：西元 2012 年 9 月 */

此例的 addPopupMenuListenerDemo 直接實作 PopupMenuListener 介面

public class addPopupMenuListenerDemo extends MouseAdapter implements PopupMenuListener {

然後建立快顯功能表物件 popupmenu ，最後呼叫 addPopupMenuListener() 並以 this 當參數

popupmenu = new JPopupMenu();
item1 = new JMenuItem("one");
item2 = new JMenuItem("two");
popupmenu.add(item1);
popupmenu.add(item2);
popupmenu.addPopupMenuListener(this);

由於 addPopupMenuListenerDemo 實作 PopupMenuListener 介面，因此要寫出 popupMenuCanceled() 、 popupMenuWillBecomeInvisible() 、 popupMenuWillBecomeVisible()

public void popupMenuCanceled(PopupMenuEvent e)  {
    System.out.println("popupMenuCanceled");
}
    
public void popupMenuWillBecomeInvisible(PopupMenuEvent e) {
    System.out.println("popupMenuWillBecomeInvisible");
}
    
public void popupMenuWillBecomeVisible(PopupMenuEvent e)  {
    System.out.println("popupMenuWillBecomeVisible");
}

popupMenuCanceled() 為取消快顯功能表的動作， popupMenuWillBecomeInvisible() 為快顯功能表變得不可見， popupMenuWillBecomeVisible() 為快顯功能表變得可見。


編譯後執行，結果如下

中英文術語對照
類別	class
方法	method
回傳值	return value
型態	type
物件	object
參數	parameter

您可以繼續參考

Swing 元件

• ButtonGroup
• JComponent
• AbstractButton
• JButton
• JToggleButton
• JCheckBox
• JRadioButton
• JMenuItem
• JCheckBoxMenuItem
• JMenu
• JRadioButtonMenuItem
• JColorChooser
• JComboBox
• JFileChooser
• JInternalFrame
• JLabel
• JLayeredPane
• JDesktopPane
• JList
• JMenuBar
• JOptionPane
• JPanel
• JPopupMenu
• JProgressBar
• JRootPane
• JScrollBar
• JScrollPane
• JSeparator
• JSlider
• JSpinner
• JSplitPane
• JTabbedPane
• JTable
• text.JTextComponent
• JEditorPane
• JTextPane
• JTextField
• JFormattedTextField
• JPasswordField
• JTextArea
• JToolBar
• JToolTip
• JTree
• JViewport
• JDialog
• JFrame
• JWindow

相關目錄

Java API 分類導覽
Java 教材
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參考資料

http://docs.oracle.com/javase/6/docs/api/javax/swing/JPopupMenu.html