[pygtk] The Right Way to communicate between windows

[Jens Knutson]

Hi,

I'm having trouble figuring out The Right Way(TM) to get separate
windows in my app to communicate between each other.  Here's what I'm
trying to do:

1.  'A' is my main app class with the main window of my app.  This
window contains a Kiwi ObjectList.
2.  A creates object B, and B then opens its own window.
3.  When the user is done entering some input into B and hits the OK
button, I want B to then trigger A's ObjectList to reflect the updated
data the user just entered from B.

Also, I'm using gtkbuilder to define almost all of the UI &
accompanying callbacks, and I'd prefer to keep it that way as much as
possible.

I was originally just using a dialog with .run(), but I don't want to
block anything in the main window's UI, so that's no good.  I've come
up with a few other ideas about how to do this, but they all feel like
nasty hacks.

What's the correct thing to do here?

Thanks!

Jens K.