Java关于窗口最大化的事件是什么

Question

Java如何对窗口最大化时的事件作出响应？。

Answer 1

参考自： http://futrueboy.iteye.com/blog/239826import javax.swing.*;
import java.awt.event.*;public class A {
JFrame mainFrame; public A() {
mainFrame = new JFrame("JFrameDemo Title"); // 创建一个JFrame
mainFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);// 设置关闭动作
mainFrame.setSize(300, 300);// 设置窗口大小
mainFrame.setLocationRelativeTo(null);// 使窗口显示在屏幕中央 mainFrame.addWindowListener(new WindowListener() {
public void windowOpened(WindowEvent e) {
System.out.println("window opened");
} public void windowClosing(WindowEvent e) {
System.out.println("window closing");
} public void windowClosed(WindowEvent e) {
System.out.println("window closed");
} public void windowIconified(WindowEvent e) {
System.out.println("window iconified");
} public void windowDeiconified(WindowEvent e) {
System.out.println("window deiconified");
} public void windowActivated(WindowEvent e) {
System.out.println("window activated");
} public void windowDeactivated(WindowEvent e) {
System.out.println("window deactivated");
}
});
mainFrame.addWindowFocusListener(new WindowFocusListener() {
public void windowGainedFocus(WindowEvent e) {
System.out.println("gained focus");
} public void windowLostFocus(WindowEvent e) {
System.out.println("lost focus");
}
});
mainFrame.addWindowStateListener(new WindowStateListener() {
public void windowStateChanged(WindowEvent e) {
System.out.println("state changed");
if (e.getNewState() == JFrame.MAXIMIZED_BOTH) {
System.out.println("maximized!");
}
// 通过获取state识别窗口状态，LZ自己研究下啦~
// System.out.println(e.getNewState());
// System.out.println(e.getOldState());
}
}); mainFrame.setVisible(true);
} public static void main(String[] args) {
new A();
}
}

Answer 2

import javax.swing.*;
import java.awt.event.*;public class A {
    JFrame mainFrame;    public A() {
        mainFrame = new JFrame("JFrameDemo Title"); // 创建一个JFrame
        mainFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);// 设置关闭动作
        mainFrame.setSize(300, 300);// 设置窗口大小
        mainFrame.setLocationRelativeTo(null);// 使窗口显示在屏幕中央        mainFrame.addWindowListener(new WindowListener() {
            public void windowOpened(WindowEvent e) {
                System.out.println("window opened");
            }            public void windowClosing(WindowEvent e) {
                System.out.println("window closing");
            }            public void windowClosed(WindowEvent e) {
                System.out.println("window closed");
            }            public void windowIconified(WindowEvent e) {
                System.out.println("window iconified");
            }            public void windowDeiconified(WindowEvent e) {
                System.out.println("window deiconified");
            }            public void windowActivated(WindowEvent e) {
                System.out.println("window activated");
            }            public void windowDeactivated(WindowEvent e) {
                System.out.println("window deactivated");
            }
        });
        mainFrame.addWindowFocusListener(new WindowFocusListener() {
            public void windowGainedFocus(WindowEvent e) {
                System.out.println("gained focus");
            }            public void windowLostFocus(WindowEvent e) {
                System.out.println("lost focus");
            }
        });
        mainFrame.addWindowStateListener(new WindowStateListener() {
            public void windowStateChanged(WindowEvent e) {
                System.out.println("state changed");
                if (e.getNewState() == JFrame.MAXIMIZED_BOTH) {
                    System.out.println("maximized!");
                }
                //    通过获取state识别窗口状态，LZ自己研究下啦~
//                System.out.println(e.getNewState());
//                System.out.println(e.getOldState());
            }
        });        mainFrame.setVisible(true);
    }    public static void main(String[] args) {
        new A();
    }
}

Answer 3

import javax.swing.*;
import java.awt.event.*;public class A {
    JFrame mainFrame;    public A() {
        mainFrame = new JFrame("JFrameDemo Title"); // 创建一个JFrame
        mainFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);// 设置关闭动作
        mainFrame.setSize(300, 300);// 设置窗口大小
        mainFrame.setLocationRelativeTo(null);// 使窗口显示在屏幕中央        mainFrame.addWindowListener(new WindowListener() {
            public void windowOpened(WindowEvent e) {
                System.out.println("window opened");
            }            public void windowClosing(WindowEvent e) {
                System.out.println("window closing");
            }            public void windowClosed(WindowEvent e) {
                System.out.println("window closed");
            }            public void windowIconified(WindowEvent e) {
                System.out.println("window iconified");
            }            public void windowDeiconified(WindowEvent e) {
                System.out.println("window deiconified");
            }            public void windowActivated(WindowEvent e) {
                System.out.println("window activated");
            }            public void windowDeactivated(WindowEvent e) {
                System.out.println("window deactivated");
            }
        });
        mainFrame.addWindowFocusListener(new WindowFocusListener() {
            public void windowGainedFocus(WindowEvent e) {
                System.out.println("gained focus");
            }            public void windowLostFocus(WindowEvent e) {
                System.out.println("lost focus");
            }
        });
        mainFrame.addWindowStateListener(new WindowStateListener() {
            public void windowStateChanged(WindowEvent e) {
                System.out.println("state changed");
                if (e.getNewState() == JFrame.MAXIMIZED_BOTH) {
                    System.out.println("maximized!");
                }
                //    通过获取state识别窗口状态，LZ自己研究下啦~
//                System.out.println(e.getNewState());
//                System.out.println(e.getOldState());
            }
        });        mainFrame.setVisible(true);
    }    public static void main(String[] args) {
        new A();
    }
}

Answer 4

额 【/code=Java】  试一试。第一次用

Answer 5

还可以用WindowAdapter代替LS的那些Listener
即
    mainFrame.addWindowListener(new WindowAdapter() {
        public void windowActivated(WindowEvent e) {}
        public void windowClosed(WindowEvent e) {} 
        public void windowClosing(WindowEvent e) {}
        public void windowDeactivated(WindowEvent e) {}
        public void windowDeiconified(WindowEvent e) {} 
        public void windowGainedFocus(WindowEvent e) {}
        public void windowIconified(WindowEvent e) {}
        public void windowLostFocus(WindowEvent e) {}
        public void windowOpened(WindowEvent e) {}
        public void windowStateChanged(WindowEvent e) {
            if (e.getNewState() == JFrame.MAXIMIZED_BOTH) {
                //do something here
            }
        }
    });