修飾子
public interface WindowListener
父介面
java.util.EventListener
實作方法
名稱 敘述 windowActivated() 處理視窗成為焦點視窗事件 windowClosed() 處理視窗關閉後事件 windowClosing() 處理視窗關閉中事件 windowDeactivated() 處理視窗失去焦點事件 windowDeiconified() 處理視窗取消最小化事件 windowIconified() 處理視窗最小化事件 windowOpened() 處理開啟視窗事件
舉例如下
import java.awt.*; import java.awt.event.*; public class Window3Demo extends WindowAdapter { Frame frame; public static void main(String[] args) { new Window3Demo(); } public Window3Demo() { frame = new Frame("AWTDemo"); frame.addWindowListener(this); frame.setSize(600, 400); frame.setVisible(true); } public void windowActivated(WindowEvent e) { System.out.println("windowActivated"); } public void windowClosed(WindowEvent e) { System.out.println("windowClosed"); } public void windowClosing(WindowEvent e) { System.out.println("windowClosing"); frame.dispose(); } public void windowDeactivated(WindowEvent e) { System.out.println("windowDeactivated"); } public void windowDeiconified(WindowEvent e) { System.out.println("windowDeiconified"); } public void windowIconified(WindowEvent e) { System.out.println("windowIconified"); } public void windowOpened(WindowEvent e) { System.out.println("windowOpened"); } } /* 《程式語言教學誌》的範例程式 http://pydoing.blogspot.com/ 檔名:Window3Demo.java 功能:示範 Java 程式 作者:張凱慶 時間:西元 2012 年 3 月 */
此例的 Window3Demo 繼承自 WindowAdapter 類別,該類別已經實作 WindowListener 介面
public class Window3Demo extends WindowAdapter {
這裡我們直接改寫 WindowListener 中的七個方法,當視窗開啟時,在命令列印出 "windowOpened" ,變成焦點視窗時印出 "windowActivated" ,失去焦點時印出 "windowDeactivated" ,最小化印出 "windowIconified" ,取消最小化印出 "windowDeiconified" ,關閉視窗印出 "windowClosing" ,關閉視窗後印出 "windowClosed"
public void windowActivated(WindowEvent e) { System.out.println("windowActivated"); } public void windowClosed(WindowEvent e) { System.out.println("windowClosed"); } public void windowClosing(WindowEvent e) { System.out.println("windowClosing"); frame.dispose(); } public void windowDeactivated(WindowEvent e) { System.out.println("windowDeactivated"); } public void windowDeiconified(WindowEvent e) { System.out.println("windowDeiconified"); } public void windowIconified(WindowEvent e) { System.out.println("windowIconified"); } public void windowOpened(WindowEvent e) { System.out.println("windowOpened"); }
編譯後執行,結果如下
中英文術語對照 | |
---|---|
介面 | interface |
方法 | method |
參數 | parameter |
物件 | object |
您可以繼續參考
事件處理
相關目錄
Java API 分類導覽
Java 教材
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參考資料
http://docs.oracle.com/javase/6/docs/api/java/awt/event/WindowListener.html
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