Java Swing介面編程(25)---事件處理：滑鼠事件及監聽處理

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假設想對一個滑鼠的操作進行監聽，假設滑鼠按下、鬆開等。則能夠使用MouseListener介面。

package com.beyole.util;import java.awt.event.MouseEvent;import java.awt.event.MouseListener;import java.awt.event.WindowAdapter;import java.awt.event.WindowEvent;import javax.swing.JFrame;import javax.swing.JScrollPane;import javax.swing.JTextArea;class MyMouseHandle extends JFrame implements MouseListener {private JTextArea text = new JTextArea();public MyMouseHandle() {super.setTitle("Crystal");// 設定標題JScrollPane pane = new JScrollPane(text);// 增加滾動欄pane.setBounds(5, 5, 300, 200);// 設定絕對位置super.add(pane);// 向視窗中增加組件text.addMouseListener(this);// 增加mouse監聽super.setSize(310, 210);super.setVisible(true);super.addWindowListener(new WindowAdapter() {public void windowClosing(WindowEvent arg0) {System.exit(1);}});}public void mouseClicked(MouseEvent e)// 按一下滑鼠事件{int c = e.getButton();// 得到按下的滑鼠鍵String mouseInfo = null;// 接收資訊if (c == MouseEvent.BUTTON1)// 推斷是滑鼠左鍵按下{mouseInfo = "左鍵";} else if (c == MouseEvent.BUTTON3) {// 推斷是滑鼠右鍵按下mouseInfo = "右鍵";} else {mouseInfo = "滾軸";}text.append("按一下滑鼠：" + mouseInfo + ".\n");}public void mouseEntered(MouseEvent e)// 滑鼠進入組件{text.append("滑鼠進入組件.\n");}public void mouseExited(MouseEvent e)// 滑鼠退出組件{text.append("滑鼠退出組件.\n");}public void mousePressed(MouseEvent e)// 滑鼠按下{text.append("滑鼠按下.\n");}public void mouseReleased(MouseEvent e)// 滑鼠鬆開{text.append("滑鼠鬆開.\n");}}public class MyMouseEventDemo {public static void main(String[] args) {new MyMouseHandle();}}

程式：

Java Swing介面編程(25)---事件處理：滑鼠事件及監聽處理