the characters typed appear in the textfield. the only one that do not cause any r�action are keys such as backspace, enter, del, tab ... And the listener's methods are not called. G.
Dave Wathen a �crit : > When you say nothing happens do you mean that your listener > is not being notified or really nothing so the characters > typed don't appear in the textfield either? > > Dave Wathen > Canzonet Limited > http://www.canzonet.com > mailto:[EMAIL PROTECTED] > > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On > Behalf Of lehmann2 > Sent: 23 May 2002 08:55 > To: max > Cc: [EMAIL PROTECTED] > Subject: Re: keyboard focus > > Hi Max and thanks for your answer. > > max a �crit : > > > > I have a problem with the JTextFields in my IHM. > > > > What does IHM mean ? > > oups! sorry, IHM is the frensh for GUI ... > > > > > > > I THINK i know what you are asking for - but im not sure. Can you give a > > short code-example of what it is you are trying to do ? > > > > /max > > Well, > I have a JPanel in a JFrame that contains a JTextField and JButtons. > Here is a part of my code: > > JTextField txtName = new JTextField(); > txtName.addKeyListener(new KeyAdapter() { > public void keyPressed(KeyEvent e) { > System.out.println("KeyPressed"); > enableButtons() > }; > public void keyReleased(KeyEvent e) { > enableButtons() > System.out.println("KeyReleased"); > }; > private void enableButtons() { > buttonOK.setEnabled(true); > cancelBtn.setEnabled(true); > } > }); > > As you can see, I just want to enable buttons when a key is typed in the > textfield. > I implemented both keyPressed() and keyReleased() because I had ever > observed > that when I type a key, it often happens that only one of these two methods > is called ... so that way I am sure that the enablebuttons() method is > called > ... but my problem is not here. > > In a general way, when I type a key, the buttons are properly enabled, and > traces are OK, but sometimes (I haven't found why), it is as if the > textfield > had lost its listener: nothing happens when a key is typed. If I leave the > panel and then come back to it ( My frame has a central panel in witch can > be > loaded my textfield panel or another one), sometimes the listener "comes > back" but it is not garanteed. > > I have read in swing doc that the textfield has to be visible and to have > the > keyboard focus so that its keylistener is activated; I added a focus > listener > to the textfield to trace when the focus is gained and lost, and I could see > it did had the focus ... that is why I thought that having the keyboard > focus > was not the same as having the focus detected by the listener ... now, I > Know > my supposition was wrong, so I am absolutly impowerished... <:( > > Do you have any idea? > > greetings, > G. > > _______________________________________________ > Advanced-swing mailing list > [EMAIL PROTECTED] > http://eos.dk/mailman/listinfo/advanced-swing _______________________________________________ Advanced-swing mailing list [EMAIL PROTECTED] http://eos.dk/mailman/listinfo/advanced-swing
