clicking esc closes the dialog. How to avoid it?

[Ottavio Campana <bott iol it>]

I have got a dialog with a progressbar  and it has to be shown until the
job  of  the progressbar  is  done.  If the  user  hits  esc the  dialog
disapper.

How can I avoid this? Do I  have to intercept a signal? Which one? (i've
already removed all the buttons form the dialog)

Thank you

-- 
Non c'è più forza nella normalità, c'è solo monotonia.