------如何在点击应用程序的关闭按钮时弹出对话框------

Question

this.addWindowListener....private class SymWindow extends java.awt.event.WindowAdapter {
        public void windowClosing(java.awt.event.WindowEvent event) {
            Object object = event.getSource();
            Job_windowClosing(event);
        }        void Job_windowClosing(java.awt.event.WindowEvent event) {
            exitApplication();
        }
    }private void exitApplication() {
        try {
            // Show a confirmation dialog
            int reply = JOptionPane.showConfirmDialog(.......);
            // If the confirmation was affirmative, handle exiting.
            if (reply == JOptionPane.YES_OPTION) {
                this.dispose(); // free the system resources
                System.exit(0); // close the application
            }
        }
        catch (Exception e) {
            e.printStackTrace();
        }
    }

Answer 1

To:Acylas(Acylas)
this.addWindowListener....这句我不太明白,
我将你的代码加到我的Application.java中,但是不能实现,能不能说具体点啊???

Answer 2

jframe.addWindowListener(new SymWindow());

Answer 3

To:Acylas(Acylas)
实在不好意思,上面的代码应该加到哪里啊?我分别加在"Application.java"和"MyFrame.java"中时,  this.dispose(); //这句话都会出错
而且退出应用程序时并没有响应.还请你多多指教啊????

Answer 4

To:Acylas(Acylas):上面的代码我加在"Application.java"里的,但退出应用程序时并没有响应.
我想在FrameMain 中应该添加一个jframe.addWindowListener(new SymWindow());
方法,请问该方法形式应该是什么样的???
public class AppSuperEditor {
FrameMain frame = new FrameMain();
public AppSuperEditor() {  
    if (packFrame) {
      frame.pack();
    }
    else {
      frame.validate();
    }
    frame.setVisible(true);
    frame.setExtendedState(JFrame.MAXIMIZED_BOTH);
    frame.setResizable(false);
    jframe.addWindowListener(new SymWindow());  }
  private void exitApplication() {
       try {
           String strMessage = "Are you sure to close";
           int reply = JOptionPane.showConfirmDialog(null,strMessage);
           if (reply == JOptionPane.YES_OPTION) {
               frame.dispose(); // free the system resources
               System.exit(0); // close the application
           }
       }
       catch (Exception e) {
           e.printStackTrace();
       }
   }  //Main method
  public static void main(String[] args) {
    try {
      UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
      AppSuperEditor app = new AppSuperEditor();
    }
    catch(Exception e) {
      e.printStackTrace();
    }
  }
//==========================================================
  private class SymWindow extends java.awt.event.WindowAdapter {
 
       public void windowClosing(java.awt.event.WindowEvent event) {
           Object object = event.getSource();
           Job_windowClosing(event);
       }
       void Job_windowClosing(java.awt.event.WindowEvent event) {
           exitApplication();
       }
   }
}

Answer 5

我想在关闭一个JFrame的时候弹出该对话框,请问应该如何做???

Answer 6

frame.addWindowListener(new WindowAdapter() {
  public void windowClosing(WindowEvent e) {
     result=JOptionPane.showConfirmDialog(f,"是否退出出？","提示",JOptionPane.INFORMATION_MESSAGE);
       if (result==0)
{
cancel();
         }
       if (result=1){
frame.setVisable(false);
System.exit(0);
}


   }
  });