how to tell gtk to update only the GUI

[Mehmet YASAR <myasar free fr>]

Hi all,

I'm doing some lengthy calculations and I'd like to tell gtk to update 
only the GUI (gtk should process ONLY expose events).

Obviously, there is gtk_main_iteration() but that's processing all 
pending events (keypress, timers ...), that means I have to disable all 
keypress handler (timers ...) during the screen update.

So it would be simple if I had a way process only expose events (do you 
think I'm asking too much ?).

Thanks