how to process only some GTK events and leave the others in the queue

[Francesco Montorsi <f18m_cpp217828 yahoo it>]

Hi,
   is it possible to process only some specific events from the GTK/GDK event 
queue and leave the others in the queue so they can be processed later by the 
main loop?

I'll try to explain it better: I have a GTK-based app which runs the gtk_main() 
in its void main().
However at a certain point (e.g. upon user click on a GtkButton), I need to 
perform a long computation. I don't want to use a secondary thread; rather I'd 
like to do everything from the main thread. To avoid blocking the GUI of my app 
during the computation, I call from time to time:

while (gtk_events_pending() != 0)
    gtk_main_iteration();

to process the pending events in the queue. However now I'd like to process only 
_some_ of the events of the queue, and leave the others in the queue itself.

Is it possible?

Thanks!!
Francesco

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