program flow--please help

[A R Hummaida <hummaida cs man ac uk>]

   Dear All

I am kind of new to gtk's event based flow..

i have a call back function A that within it calls another function B. 
the later displays a window for the user to confirm something.
during this time fuction A does not wait for B to return, but carries 
till it finshes. thats not what i am used to in c.
how could i get A to wait untill B returns ?(ie after a user confirms 
within B). i have generated most of the code using Glade.

Please help.

Many Thanks

A.Hummaida