progress, statusbar, update

[Mario Ospelt <mospelt student ethz ch>]

Hello,

In my GUI the user calls by clicking a button a subroutine which looks 
like this:

sub details {
   my @par = @_;
   my @IDs = @{$par[1]};
   $status -> push($cont_id,"Open report...");
   Gtk2 -> main_iteration;
   foreach (@IDs){
       push (@temp_pdfs, &make_pdf);
   }
   $status -> pop($cont_id);
}

1. The make_pdf subroutine in the foreach loop creates a pdf file and 
opens it in the Acrobat Reader. This process takes a while and therefore 
I want to let the user know of the progress. At first I wanted to set 
the comment in the statusbar. But it doesn't appear in the GUI. Is there 
something wrong with using Gtk2 -> main_iteration?

2. In addition I thought of putting a progressbar (activity mode) in the 
right corner of the statusbar. I already tried to implement such a bar, 
but I had the same problem with getting it updated during the process.

Can someone help me solving these problems?

Thanks
Mario