🚀 go-pugleaf

You need to implement the VetoableChangeListener interface. You then
code a custom vetoableChange method which can ask the user if they are
sure they want to exit, etc. In this method the closing/remaining open
is taken care of. You can then add a vetoableChangeListener to each
internal frame and the method will take care of the rest for you.

Uri Kerbel
--
uri@kalbi.demon.co.uk
www.kalbi.demon.co.uk

On Tue, 18 May 1999 12:57:25 +0200, Michael =?iso-8859-1?Q?H=E4rtig?=
<haertig@nupis.de> wrote:

>Hi all
>
>I have a problem with my JInternalFrame. If the user select Close from
>System-Menu (X) I want to ask if he is sure or not. I added a
>InternalFrameListener and set the DefaultCloseOperation. But how can I
>say NO, don't close???? The Frame always closes.
>
>Here my code..
> 
>public MyInternalFrame(){
>  ...
>  this.setDefaultCloseOperation(DO_NOTHING_ON_CLOSE);
>  this.addInternalFrameListener(new InternalFrameAdapter(){
>    public void internalFrameClosing(InternalFrameEvent ev){
>      //Here is a call of a Dialog that returns true (Yes, close) or
>false (No, not close)
>      if (new MessageDialog()) this.setVisible(false);
>      else return; //Doesnt work
>    }
>  });
>  ...
>} 
>
>Hoping for help
>
>Michael
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