package com.fanghua; //功能：事件处理机制 演示1.2 import java.awt.*; import javax.swing.*; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.KeyEvent; import java.awt.event.KeyListener; import java.awt.event.MouseEvent; import java.awt.event.MouseListener; import java.awt.event.WindowEvent; import java.awt.event.WindowListener; public class Demo1_3 extends JFrame { Mypanl1_3 mp1 = null; public static void main(String[] args) { // TODO Auto-generated method stub new Demo1_3(); } public Demo1_3() { // 这里经常忘记 mp1 = new Mypanl1_3(); this.add(mp1); // 注册监听 this.addKeyListener(mp1); this.addMouseListener(mp1); this.addWindowListener(mp1); this.addMouseMotionListener(mp1); // this.addActionListener(mp1); // 按钮用这个，this.addActionListener(mp1); this.setSize(300, 400); this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); this.setVisible(true); } } // 这个经常用，java.awt.event.MouseMotionListener 鼠标移动和拖拽 class Mypanl1_3 extends JPanel implements java.awt.event.MouseMotionListener, KeyListener, MouseListener, WindowListener { public void paint(Graphics g) { super.paint(g); } @Override public void windowOpened(WindowEvent e) { // TODO Auto-generated method stub System.out.print("开启窗口被调用" + e.getClass()); } @Override public void windowClosing(WindowEvent e) { // TODO Auto-generated method stub } @Override public void windowClosed(WindowEvent e) { // TODO Auto-generated method stub System.out.println("窗口关闭了"); } @Override public void windowIconified(WindowEvent e) { // TODO Auto-generated method stub } @Override public void windowDeiconified(WindowEvent e) { // TODO Auto-generated method stub } @Override // 窗口激活 public void windowActivated(WindowEvent e) { // TODO Auto-generated method stub System.out.println("窗口激活"); } @Override // 窗口不激活 public void windowDeactivated(WindowEvent e) { // TODO Auto-generated method stub System.out.println("窗口不激活"); } @Override // 1.鼠标点击 public void mouseClicked(MouseEvent e) { // TODO Auto-generated method stub System.out .println("当前鼠标点击的横坐标是" + e.getX() + "当前鼠标点击de纵坐标是" + e.getY()); } @Override // 2.鼠标按压，没松开 public void mousePressed(MouseEvent e) { // TODO Auto-generated method stub System.out.println("鼠标按压，没松开"); } @Override // 3.鼠标松开 public void mouseReleased(MouseEvent e) { // TODO Auto-generated method stub System.out.println("鼠标松开"); } @Override // 4.鼠标移动到MyPanel public void mouseEntered(MouseEvent e) { // TODO Auto-generated method stub System.out.println("鼠标移动到面板"); } @Override // 5.鼠标离开 public void mouseExited(MouseEvent e) { // TODO Auto-generated method stub System.out.println("鼠标离开"); } @Override // 1.键输入 (与 keyPressed的不同是，外围一圈的键都不会有反应) public void keyTyped(KeyEvent e) { // TODO Auto-generated method stub } @Override // 2.键按下(我测试过了： // 字母和少数键没反应，其他键盘最外一圈F1-F12，Delete等控制台之类都有反应） public void keyPressed(KeyEvent e) { // TODO Auto-generated method stub // 注意：这里切换到美式键盘或者英文状态下演示。我在搜狗输入法下演示了，结果像个傻子 System.out.println(e.getKeyChar() + "键按下"); } @Override // 键松开 public void keyReleased(KeyEvent e) { // TODO Auto-generated method stub } @Override // 重要：鼠标拖拽 public void mouseDragged(MouseEvent e) { // TODO Auto-generated method stub System.out.println("鼠标拖拽了"); } @Override // 重要：鼠标移动 public void mouseMoved(MouseEvent e) { // TODO Auto-generated method stub // System.out.println("鼠标移动了"); System.out.println("当前移动移动横坐标是" + e.getX() + "当前移动纵坐标是" + e.getY()); } }
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