Use add_rectangle_to_path() instead reference.
Use add_region_to_path() instead
Use the overloaded function that takes a const RefPtr reference.
Use the overloaded function that takes a const RefPtr reference.
Use the overloaded function that takes a const RefPtr reference.
This is an "action" key-binding signal that you should rarely need to use.
: Use the new Gtk::Tooltip API. This signal will now never be emitted.
This should never have been in the API. It was never meaningful.