Screen updates while long time running subroutine

[Pedro Zorzenon Neto <pzn terra com br>]

Hi,

   I have a routine that makes a lot of math stuff and takes about 60 seconds to run.
   While this routine is running, the Gtk program seems staled. It doesn't respond to resizes and if I change the focus to another program and go back to it, it's window keeps all grey and just redraws at the end of the routine.
   Is there any function that I can put inside my loops in this routines that forces a redraw/resize if the user is trying to do it?

   Thanks,
     Pedro