Waiting for multiple windows

[Edd Dawson <edd mr-edd co uk>]

Hi all,

I'm writing a system where requests are coming in asyncronously (through a 
socket, typically) and a new window is created to handle each request.
To do this, I have a "main" window that shows the active connections and its 
class has a member function that pops up a new window to handle each request. 
These pop-up windows should not block input to any other window (i.e. they 
should not be modal).
Currently, when I close the main window, all the pop-ups dissappear because the 
event loop has finished. Is there any way to keep the initial call to 
Gtk::Main::Run() from finishing until all the popups have been closed?
I've tried creating each pop-up in its own thread, but the program barfed pretty 
quick, so I assume this is a no-no :)
Any help is very much appreciated!

Edd