[gtkmm] Gtk::TreeView

[Benoît Touron <B Touron citb bull net>]

Hello everybody !

I am new to Gtkmm. I searched in the documentation, and in the mailing 
list archive, without success.

So, in a TreeView, how can I display the connecting lines between the 
nodes ?
Is it an option somewhere in the TreeView ?

I am using gtkmm under Windows.

Thanks for your help.

Ben