🚀 go-pugleaf

"Nenko Ivanov" <nivanov@icygen.com> wrote in message
news:3e550986@newsgroups.borland.com...
> Hi everyone,
> I want to create an task status indicator with JProgressBar.
> I made one extended JDialog classs with a JProgressBar in it and when
my
> task starts I show this Dialog and tell the JPorgressBar to change
it's
> value to the desired one.
> Everything seemed to be OK, but the dialog show's up when my task is
> finished and it does't make sence ;)
> (The task is creating a big HTML file from known amount of data)
> So I am not very aquainted with Threads  but I think that the answer
is
> somewhere there.
> Can anyone help me find the answer?

Sounds like you do ineed need to be running your task in a seperate
thread. This will also mean that you need to take care with calls to GUI
elements, as these can louse things up if done from other threads -
SwingUtilities.invoke() and invokeAndWait() are nesscesary to safely
update widgets from threads other than the AWT event thread.

There are a number of approches you could take, but an example could
involve

1)Define a class that represents your task (either with the threading
built in, or not (I'd go for not).
2)Define a listener interface for your task (and the approptiate code in
your task class).
3)Implement an instance of this listener and put the GUI updates in
there.

--
hth
Owen

Thanks Owen,
I will try to follow your advice.

Regards,
Nenko.

"Owen Green" <owen@begonefoulmachine.kennulz.demon.co.uk> wrote in message
news:3e550e87@newsgroups.borland.com...
>
> "Nenko Ivanov" <nivanov@icygen.com> wrote in message
> news:3e550986@newsgroups.borland.com...
> > Hi everyone,
> > I want to create an task status indicator with JProgressBar.
> > I made one extended JDialog classs with a JProgressBar in it and when
> my
> > task starts I show this Dialog and tell the JPorgressBar to change
> it's
> > value to the desired one.
> > Everything seemed to be OK, but the dialog show's up when my task is
> > finished and it does't make sence ;)
> > (The task is creating a big HTML file from known amount of data)
> > So I am not very aquainted with Threads  but I think that the answer
> is
> > somewhere there.
> > Can anyone help me find the answer?
>
> Sounds like you do ineed need to be running your task in a seperate
> thread. This will also mean that you need to take care with calls to GUI
> elements, as these can louse things up if done from other threads -
> SwingUtilities.invoke() and invokeAndWait() are nesscesary to safely
> update widgets from threads other than the AWT event thread.
>
> There are a number of approches you could take, but an example could
> involve
>
> 1)Define a class that represents your task (either with the threading
> built in, or not (I'd go for not).
> 2)Define a listener interface for your task (and the approptiate code in
> your task class).
> 3)Implement an instance of this listener and put the GUI updates in
> there.
>
> --
> hth
> Owen
>
>
>
>
>
>
>
>