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{相关信息}
窗口事件(WindowEvent)指窗口状态改变的事件,例如当窗口 Window 对象的打开、关闭、激活、停用或者焦点转移到窗口内,
以及焦点移除而生成的事件，一般发生在 Window、Frame、Dialog 等类的对象上。使用窗口事件必须为组件添加一个实现 WindowListener 接口的事件处理器,该接口包含以下 7 种方法：
void windowActivated(WindowEvent e):窗口被激活时发生
void windowClosed(WindowEvent e):窗口关闭之后发生
void windowClosing(WindowEvent e):窗口关闭过程中发生
void windowDeactivated(WindowEvent e):窗口不再处于激活状态时发生
void windowDeiconified(WindowEvent e):窗口大小从最小到正常时发生
void windowIconified(WindowEvent e):窗口从正常到最小时发生
void windowOpened(WindowEvent e):窗口第一次被打开时发生
{相关代码}
package sup.orange.learn; import java.awt.*; import java.awt.event.WindowEvent; import java.awt.event.WindowListener; /** * Created by re-x on 11/2/14. */ public class WindowEventDemo extends Frame { String string = null; public WindowEventDemo () { super(); init(); } public static void main(String[] args) { new WindowEventDemo(); } public void init() { addWindowListener(new WindowListener() { @Override public void windowOpened(WindowEvent e) { string = "window opened"; System.out.println(string); repaint(); } @Override public void windowClosing(WindowEvent e) { string = "window closing"; System.out.println(string); setVisible(false); dispose(); System.exit(0); } @Override public void windowClosed(WindowEvent e) { string = "window closed"; System.out.println(string); repaint(); } @Override public void windowIconified(WindowEvent e) { string = "window iconified"; System.out.println(string); repaint(); } @Override public void windowDeiconified(WindowEvent e) { string = "window deiconified"; System.out.println(string); repaint(); } @Override public void windowActivated(WindowEvent e) { string = "window activated"; System.out.println(string); repaint(); } @Override public void windowDeactivated(WindowEvent e) { string = "window deactivated"; System.out.println(string); repaint(); } }); setSize(200, 200); setVisible(true); } public void paint(Graphics g) { g.drawString(string, 30, 100); } }
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原文地址：http://www.cnblogs.com/aqing1987/p/4224787.html
