New API in glibmm 2.66

Member Gio::MENU_ATTRIBUTE_ACTION_NAMESPACE

Member Gio::MENU_ATTRIBUTE_ICON

Member Gio::SettingsSchemaSource::create (const std::string & directory, bool trusted, const Glib::RefPtr< SettingsSchemaSource > & parent=get_default())

Member Gio::SettingsSchemaSource::list_schemas (bool relocatable, bool recursive) const

Member manage