Modal dialogs

[John Senford]

SUMMARY:
Non-modal progress dialog does not get chance to be displayed fully before
the comencement of the heavy processing that it should be displaying the
progress for.


DETAIL:
OK, it's back to basics for a moment I'm affriad.

I'm having a little trouble with a dialog class I've created, being that
it never displays its contents.

My class extends javax.swing.JDialog and is created and shown prior to some
processing intensive stuff (file loading incidentally), during which I wish
the contents of the dialog to be updated.

The dialog window is painted to screen but unfortunately its contents (a
JTextArea and a JProgressBar) do not get chance to be displayed if the dialog
is set up to NOT be MODAL.

If it IS set to be MODAL then the contents display fine, but of course, the
processing that is to be carried out along side it is paused until the dialog
is closed.

Now understand that the dialog needs time to set up, and update, its display
before passing back control to other processes and so I have tried littering
the appropriate code with several strategically placed Thread.yield()'s and
even Thread.sleep()'s...but to no avail.

I am clearly missing some important code which I wondered if any kind soul
could point out to me.

thanks

John

PS
please email any suggestions direct to me instead of/as well as posting to
this forum

[Gerald Nunn]

You need to run your heavy processing in a seperate thread and update the
progress of processing in your dialog from that thread. Look for the
SwingWorker class below on sun's site to do what you want.

http://java.sun.com/products/jfc/tsc...ds/update.html

Gerald