Swing MouseAdapter類

MouseAdapter類是一個用於接收滑鼠事件的抽象(適配器)類。此類的所有方法都是空的。此類是用於創建監聽器對象的便捷類。

類聲明

以下是java.awt.event.MouseAdapter類的聲明 -

public abstract class MouseAdapter
   extends Object
      implements MouseListener, MouseWheelListener, MouseMotionListener

類構造函數

類方法

方法繼承

該類繼承以下類中的方法 -

• java.lang.Object

MouseAdapter示例

使用編輯器創建以下Java程式：MouseAdapterDemo.java

package com.zaixian.swing.listener;

import javax.swing.*;

import java.awt.Color;
import java.awt.FlowLayout;
import java.awt.GridLayout;
import java.awt.event.*;

public class MouseAdapterDemo {
    private JFrame mainFrame;
    private JLabel headerLabel;
    private JLabel statusLabel;
    private JPanel controlPanel;

    public MouseAdapterDemo() {
        prepareGUI();
    }

    public static void main(String[] args) {
        MouseAdapterDemo swingAdapterDemo = new MouseAdapterDemo();
        swingAdapterDemo.showMouseAdapterDemo();
    }

    private void prepareGUI() {
        mainFrame = new JFrame("Java SWING Examples");
        mainFrame.setSize(400, 400);
        mainFrame.setLayout(new GridLayout(3, 1));

        headerLabel = new JLabel("", JLabel.CENTER);
        statusLabel = new JLabel("", JLabel.CENTER);
        statusLabel.setSize(350, 100);

        mainFrame.addWindowListener(new WindowAdapter() {
            public void windowClosing(WindowEvent windowEvent) {
                System.exit(0);
            }
        });
        controlPanel = new JPanel();
        controlPanel.setLayout(new FlowLayout());

        mainFrame.add(headerLabel);
        mainFrame.add(controlPanel);
        mainFrame.add(statusLabel);
        mainFrame.setVisible(true);
    }

    private void showMouseAdapterDemo() {
        headerLabel.setText("Listener in action: MouseAdapter");
        JPanel panel = new JPanel();
        panel.setBackground(Color.blue);
        panel.setLayout(new FlowLayout());

        panel.addMouseListener(new MouseAdapter() {
            public void mouseClicked(MouseEvent e) {
                statusLabel.setText("Mouse Clicked: (" + e.getX() + ", " + e.getY() + ")");
            }
        });
        JLabel msglabel = new JLabel("歡迎您來到許虎虎/Swing", JLabel.CENTER);

        msglabel.addMouseListener(new MouseAdapter() {
            public void mouseClicked(MouseEvent e) {
                statusLabel.setText("Mouse Clicked: (" + e.getX() + ", " + e.getY() + ")");
            }
        });
        panel.add(msglabel);
        controlPanel.add(panel);
        mainFrame.setVisible(true);
    }
}

執行上面示例代碼，得到以下結果：