timeout function not called

[tsangv gdls com]

I'm still muddling my way through my first GTK application (and I'm a 
relative newbie on all software matters).

I have the following in one of my callbacks:

timer = g_timout_add(50, (GSourceFunc) progress_update, 
(gpointer)progressbar);

pid = fork( );

if (pid == 0)
{
     growPart ( );
     exit(0);
}
ret = wait(NULL);

g_source_remove(timer);

---------------

where progress_update is:

static gboolean progress_update (gpointer progressbar)
{
   gtk_progress_bar_pulse(GTK_PROGRESS_BAR(progressbar));
   return true;
}

----------------

I was hoping that this would mean that the progress bar would pulse while 
growPart() was running, but instead it waits until after (is this because 
control hasn't been returned to gtk_main yet?) at which point it is 
removed. If I take out the g_source_remove it runs beautifully....but only 
after growPart has completed. How can I get around this?

Thanks so much


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