Most of Gtk::Main is deprecated. Gtk::Main::init_gtkmm_internals() is an
exception. It's not deprecated in gtkmm3.
In gtkmm4 (still very unstable) Gtk::Main has been removed.
Gtk::Main::init_gtkmm_internals()is still available, but it's called
Gtk::init_gtkmm_internals().
On 2020-07-23 22:20, Rodolfo Ribeiro Gomes via gtkmm-list wrote:
> Hello.
>
> I'm creating a plugin for glade in order to be able to create
> interfaces using custom C++ widgets and edit its properties via glade.
>
> Everything is (finally) working here. My problem now is how to
> properly initialize gtkmm without using the deprecated
> Gtk::Main::init_gtkmm_internals().
> As it's a plugin, I have no reason to create an
> Gtk::Application-derived class/object…
>
>