Getting correct size after placing widget in parent

["Ian King [ES]" <king eiffel com>]

Hi,

Is there any way to force gtk to recalculate the size of a widget 
straight after it has been placed in its parent.  Presently, the only 
way I can see of doing it at the moment is to place the child widget in 
to its parents and iterate over gtk_main_iteration_do until there are no 
gtk_events pending, this is a very poor way of doing things, 
particularly if the parent widget is mapped at the time.  If anyone 
knows of a better solution to this I would be extremely grateful....

Thanks for your time

Ian King