GUI编程：AWT之窗口监听事件(三种方式)

素颜马尾好姑娘i 2022-10-22 11:51 204阅读 0赞

## 窗口监听事件 ##

**通过 addWindowListener获取**  
**示例代码：**

//窗口监听事件
    public class TestWindow01 {
        
        public static void main(String[] args) {
        
            new WindowFrame01();
        }
    }
    class WindowFrame01 extends Frame {
        
        public WindowFrame01(){
        
            setBounds(100,100,300,300);
            setBackground(Color.CYAN);
            setVisible(true);
            addWindowListener(new MyWindowListener());
    
     }
        class MyWindowListener extends WindowAdapter {
        
            @Override
            public void windowClosing(WindowEvent e) {
        
                setVisible(false);//隐藏窗口，通过按钮，隐藏当前窗口
                System.exit(0);//正常退出
            }
        }
    }

**通过匿名内部类**  
**示例代码：**

//窗口监听事件       匿名内部类
    public class TestWindow02 {
        
        public static void main(String[] args) {
        
            new WindowFrame02();
        }
    }
    class WindowFrame02 extends Frame {
        
        public WindowFrame02(){
        
            setBounds(100,100,300,300);
            setBackground(Color.CYAN);
            setVisible(true);
            //addWindowListener(new MyWindowListener());
            this.addWindowListener(
                    //匿名内部类    这样子最好
                    new WindowAdapter() {
        
                        @Override
                        public void windowClosing(WindowEvent e) {
        
                            //System.exit(0);
                            System.out.println("你点的x");
                        }
                    }
            );
        }
    }

**通过重写全部方法**  
**示例代码：**

//窗口监听事件    重写全部方法
    public class TestWindow03 {
        
        public static void main(String[] args) {
        
            new WindowFrame03();
        }
    }
    class WindowFrame03 extends Frame {
        
        public WindowFrame03(){
        
            setBounds(100,100,300,300);
            setBackground(Color.CYAN);
            setVisible(true);
            this.addWindowListener(
                    //匿名内部类
                    new WindowAdapter() {
        
                       /* @Override
                        public void windowOpened(WindowEvent e) {
                            System.out.println("windowOpened");
                        }*/
                        //关闭窗口
                        @Override
                        public void windowClosing(WindowEvent e) {
        
                            System.out.println("windowClosing");
                            System.exit(0);
                        }
                       /* @Override
                        public void windowClosed(WindowEvent e) {
                            System.out.println("windowClosed");
                        }*/
                        /*//最小化
                        @Override
                        public void windowIconified(WindowEvent e) {
                            System.out.println("windowIconified");
                        }*/
                       /* @Override
                        public void windowDeiconified(WindowEvent e) {
                            System.out.println("windowDeiconified");
                        }*/
                        //激活窗口
                        @Override
                        public void windowActivated(WindowEvent e) {
        
                            //默认没有名字，可以设置
                           WindowFrame03 source = (WindowFrame03) e.getSource();
                           source.setTitle("被激活了");
                            System.out.println("windowActivated");
                        }
                    }
            );
        }
    }