signal handlers + exception + transient dialogs

[Rob Benton <rob benton conwaycorp net>]

Hey guys I'm curious what you all use to handle exceptions and dialogs 
inside a signal handler.  Everywhere else in my code I use 
Gtk::MessageDialog's but I use them from the main window of my program 
so I can set them as transient.  But I don't know 100% how to do this 
inside a signal handler.  I guess I could use a call to libglademm to 
get my main window but I hate to use that approach.

I guess what I'm wondering is what is the value in setting the transient 
window of a Dialog.