Gtk::TextView signal "toggle-overwrite" missing?

[Christoph Brill <egore911 gmail com>]

Hi list,

I'm currently trying to port a large application from pygtk to gtkmm. During that process I stumbled upon code that listens to the signal "toggle-overwrite" of Gtk::TextView. From my Google search I could not clearly find why it is missing in gtkmm 3.12.0. It seems it should available since 2.5.5 (http://marc.info/?l=gnome-announce&m=107719819222439), but I can't find a trace of it.

Any hint on where to find it?

Best wishes and thanks a lot for these awesome bindings,

 Christoph