Update TreeModel when TreeView changes

[Florian Philipp <lists binarywings net>]

Hi list!

I image this must be an FAQ (or I'm just incredibly bad at reading docs)
but I've not yet found an acceptable solution:

I have a TreeModel and a ListStore, both defined in Glade. How can I
make the cells editable so that changes are reflected in the ListStore?
Preferably in a way that doesn't break every time I change the layout in
Glade.

If it matters, I'm stuck on Gtkmm-2.4

Thanks in advance!
Florian Philipp

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