-1

I have code with the class MainFrame, and the this is a mainframe object. So here's my problem. When I do this.setDefaultCloseOperation(DISPOSE_ON_CLOSE), it closes out of the dialog, but not the application. I know I should be using EXIT_ON_CLOSE, but that only works for a JFrame, and not a MainFrame object. I've tried work arounds using System.exit(0), but they all either exit at the wrong time, or fail all together. Is there anyway in which I can access the "X" button in the corner of the frame, and set it so that when it is pressed, it performs a certain action?

stevecross
  • 5,588
  • 7
  • 47
  • 85
Peter Barnett
  • 201
  • 1
  • 2
  • 13
  • 1
    Show some code. How does your `MainFrame` class look like? – stevecross Apr 10 '14 at 19:58
  • In case you extend a `JDialog`: Try `JDialog.EXIT_ON_CLOSE`. – stevecross Apr 10 '14 at 20:01
  • 1
    *....access the "X" button in the corner of the frame* YES, [`JFrame#addWindowListener`](http://docs.oracle.com/javase/tutorial/uiswing/events/windowlistener.html), see [`this`](http://stackoverflow.com/questions/7191330/closing-a-java-program-properly-when-jdialog-is-the-main-window) link also – Azad Apr 10 '14 at 20:01
  • *"I know I should be using EXIT_ON_CLOSE, but that only works for a JFrame"* - What proof have you got for this? Have you tested it? – MadProgrammer Apr 10 '14 at 20:48
  • Ummm...yes I have actually MadProgrammer. It's actually a direct call only from the JFrame API. – Peter Barnett Apr 11 '14 at 01:25

2 Answers2

0

Azad's comment worked! Go to the link as described.

EDIT: Better yet, lemme post the correct idea here in case that question ever disappears. 

dialog.addWindowListener(new WindowAdapter() { 
@Override public void windowClosed(WindowEvent e) { 
  System.exit(0);
  }
});

Where dialog is your JDialog with all the info. I recommend posting it at the end of your method where your JDialog is defined and used.

Peter Barnett
  • 201
  • 1
  • 2
  • 13
0

it closes out of the dialog, but not the application.

Why are you trying to exit an application from a dialog? An application should only close through its JFrame.

Is there anyway in which I can access the "X" button in the corner of the frame, and set it so that when it is pressed, it performs a certain action?

See Closing an Application for ideas on the subject as well as code examples.

camickr
  • 321,443
  • 19
  • 166
  • 288
  • Because when I tried throwing it into a JFrame, I was getting crazy, poorly-formatted GUIs that were perfect in a JDialog. – Peter Barnett Apr 11 '14 at 01:26
  • @user3010468, The layout in a JFrame or JDialog is identical. Your code is the problem, not the JFrame. That is why you always create a GUI by adding components to a panel and then add the panel to the frame. I suggest you fix your code. – camickr Apr 11 '14 at 03:20