KeyListener not working in 1.4

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zn?rt - 10 Mar 2004 16:06 GMT

Hi all

I have all my application dialogs derived from a single customized
JDialog that installs a KeyListener to handle help requests through
the F1 key, like this:

public class BizDialog extends JDialog
{
    /* ... */
this.addKeyListener(new java.awt.event.KeyAdapter()
{
public void keyPressed(KeyEvent e)
{
        this_keyPressed(e);
}
});
    /* ... */
}

This worked fine until I switched from jvm 1.3 to 1.4, when it stopped
working. The keyPressed event is simply not fired anymore.

While switching from 1.3 to 1.4 I also changed all intput fields from
JTextField to JFormattedTextfield, wich uses InputVerifier. Could this
be the cause?

Any ideas of why the keyListener doesn't work anymore, and possible
workaround?

regards
znôrt

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hiwa - 11 Mar 2004 01:05 GMT

znôrt <kktuapower@yahoo.es> wrote in message news:<3jeu40d8ghd5js9qr9n1o1duapq4cdjm6o@4ax.com>...

> Hi all
>
[quoted text clipped - 27 lines]
> regards
> znôrt

On what component do you expect key would be pressed? If it is on a
JTextField/JFormattedTextfield, you have to add keylistener onto it,
not onto the JDialog itself.

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zn?rt - 16 Mar 2004 10:56 GMT

>znôrt <kktuapower@yahoo.es> wrote in message news:<3jeu40d8ghd5js9qr9n1o1duapq4cdjm6o@4ax.com>...
>> Hi all
>>
>> I have all my application dialogs derived from a single customized
>> JDialog that installs a KeyListener to handle help requests through
>> the F1 key, like this:

[...]

>> While switching from 1.3 to 1.4 I also changed all intput fields from
>> JTextField to JFormattedTextfield, wich uses InputVerifier. Could this
[quoted text clipped - 6 lines]
>JTextField/JFormattedTextfield, you have to add keylistener onto it,
>not onto the JDialog itself.

Thank you and sorry for my late posting. This happens regardless of
where the focus is when F1 is pressed.

Back in my version using 1.3+JTextField, it also worked regardless of
focus position, even when it was owned by a JTextField.

This issue isn't very much high priority, so I haven't still put hands
on it really. Just wanted to know in the meanwhile if anybody had
experienced anything similar. Thank you again for your comments.

regards
znôrt

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zn?rt - 22 Mar 2004 16:02 GMT

Defintely, adding a global KeyListener won't work on 1.4 if you add
something like a JTextField or JButton to the container. I can swear
it did work on 1.3 :-)

Workaround:

Let the base container class implement ActionListener and ...

this.getRootPane().registerKeyboardAction(this,KeyStroke.getKeyStroke(KeyEvent.VK_F1,0),JComponent.WHEN_IN_FOCUSED_WINDOW);

regards
znôrt

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KeyListener not working in 1.4

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