Article View: borland.public.jbuilder.java.swing
Article #1134Re: Adding an exit confirmation dialog to a JFrame
From: Ron
Date: Fri, 12 Mar 2004 14:11
Date: Fri, 12 Mar 2004 14:11
85 lines
4223 bytes
4223 bytes
Thanks!! Greatly appreciated.
RON
"Kevin Dean" <NkOdSePaAnM@datadevelopment.com> wrote in message
news:4051c114@newsgroups.borland.com...
> That's true, the dialog is modal, but there are cases where, if the parent
> frame is null, you can still bring Frame1 to the foreground, even though
> nothing else (menus, buttons, etc.) will respond. It can be a real
nuisance
> for users, so you should always, wherever possible, assign a parent to a
> dialog.
>
> --
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>
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>
> "Ron" <rgans@nospamRonaldgansphotographyDOTcom> wrote in message
> news:4051bcf9$1@newsgroups.borland.com...
> > Admittedly, I am a novice at this (but a C++ and VB programmer for about
> 20
> > years), so I may be doing something wrong, but I just tried it and the
> > JOptionPane was definitely modal to the the Frame:
> >
> > here's the code I wrote:
> >
> >
> > public class Frame1 extends JFrame implements WindowConstants {
> > //Construct the frame
> > public Frame1() {
> > super ("Focus Frame");
> > setSize(400,400);
> > //...code where a series of JInternalFrames are created is omitted....
> >
> > WindowAdapter a = new WindowAdapter() {
> > public void windowClosing(WindowEvent e) {
> > int confirm = JOptionPane.showOptionDialog(null, "Really exit?",
> > "Exit Confirmation",
> > JOptionPane.YES_NO_OPTION,
> > JOptionPane.QUESTION_MESSAGE,
> > null, null, null);
> > if (confirm == 0) {
> > //Frame1.dispose();
> > System.exit(0);
> > }
> > }
> > };
> >
> > addWindowListener(a);
> > }
> > public static void main (String[] args) {
> > Frame1 frame = new Frame1();
> > frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
> > frame.setBounds(0,0,600,450);
> > frame.setVisible(true);
> > }
> >
> > When I run this, and try to exit (via the Java cup icon in the top left)
> the
> > exit dialog is definitely modal.
> >
> > RON
> >
> > "Tor Iver Wilhelmsen (TeamB)" <tor.wilhelmsen@ergo.no> wrote in message
> > news:u8yi632td.fsf@ergo.no...
> > > "Ron" <rgans@nospamRonaldgansphotographyDOTcom> writes:
> > >
> > > > Thanks! I tried it and it worked, but then the question: I used null
> and
> > > > that worked also. Both Frame1.this and null seem to have the same
> > > > functionality, in this very tiny example.
> > >
> > > It does - until you bring the frame to the foreground. If you have
> > > passed the frame to JOptionPane, the modal dialog will then pop to the
> > > foreground; otherwise the modal dialog remains in the background and
> > > the user will not know why they can\t interact with the frame.
> >
> >
>
>
Technical Details
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X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: 111d45,e0ae65b09d87ff96 X-Google-Attributes: gid111d45,public X-Google-ArrivalTime: 2004-03-12 06:37:54 PST Reply-To: "Ron" <rgans@nospamRonaldgansphotographyDOTcom> From: "Ron" <rgans@nospamRonaldgansphotographyDOTcom> Newsgroups: borland.public.jbuilder.java.swing References: <4050d3d3$1@newsgroups.borland.com> <4050d4ef@newsgroups.borland.com> <4050dce5@newsgroups.borland.com> <u8yi632td.fsf@ergo.no> <4051bcf9$1@newsgroups.borland.com> <4051c114@newsgroups.borland.com> Subject: Re: Adding an exit confirmation dialog to a JFrame Date: Fri, 12 Mar 2004 09:11:43 -0500 Lines: 87 X-Priority: 3 X-MSMail-Priority: Normal X-Newsreader: Microsoft Outlook Express 6.00.2800.1158 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 NNTP-Posting-Host: 161.233.20.179 Message-ID: <4051c51d$1@newsgroups.borland.com> X-Trace: newsgroups.borland.com 1079100701 161.233.20.179 (12 Mar 2004 06:11:41 -0800) Path: arc1-ca.pugleaf.net!archiver1.google.com!news1.google.com!news2.google.com!news.maxwell.syr.edu!border1.nntp.ash.giganews.com!border2.nntp.ash.giganews.com!nntp.giganews.com!newsfeeds.ihug.co.nz!ihug.co.nz!newsgroups.borland.com!not-for-mail