Re: Add tabs to Notebook at runtime, loaded from .glade file?

[Phil Wolff <adiabat centurylink net>]

I understand your problem to be that you have a set of widgets, and you 
want to instantiate multiple Gtk::Notebook tabs, each containing that 
same set of widgets, and that you've had to generate and read multiple 
identical .glade files (each defining a Gtk::Window containing the 
widget set) to get it working.

If that accurately reflects where you're at, then you're now creating a 
new Gtk:Builder instance each time you read one of those multiple .glade 
files, and it's that new instance-per-tab that has made things work. You 
can go back to using just one .glade file, as long as you continue to 
create a new Gtk::Builder instance every time you re-read it for a new tab.

You can also dispense with the Gtk::Window if you make your Gtk::Box a 
top-level widget (in glade, right-click the Gtk::Box icon in the widget 
pane and select "Add widget as toplevel"). You can then lose the 
reparent (), and you can prepend_page (), insert_page (), or append_page 
() the Gtk::Box directly. Also, all of these tab-addition functions have 
forms that allow specification of the tab title.

See Gtk::Notebook::set_tab_label_text() or get/set_tab_label() if you 
need to change the title on an existing tab.