[Glade-users] How do I reference another window in my code?

[gunfighter gunfighter virtualave net (Gunfighter)]

Hello,

I have been trying to develop something with glade, but have come to a
problem. I know I can use lookup_widget to reference widgets in the same
window, but I have an "Add Window" which should add data to a Clist in a
"Main Window". How can I do it? Do I have to manually call
gtk_signal_connect_object at the time I open the add window, connecting 
the add window's buttons and sending the main form as a parameter, or is
there an easier way to reference the main form?

Thanks in advance
Gunfighter