#ifndef LEARNGTK4_APP_WIN_2_BACK_HPP #define LEARNGTK4_APP_WIN_2_BACK_HPP #include #include namespace learn_gtkmm4 { class HelloWorld; } namespace gui_to_app { class AppWin2Back final : public Gtk::Application { public: ~AppWin2Back() noexcept final = default; static Glib::RefPtr create(); protected: AppWin2Back(); void on_startup() final; void on_activate() final; private: void on_quit(); learn_gtkmm4::HelloWorld *main_window{ nullptr }; }; } // gui_to_app #endif //LEARNGTK4_APP_WIN_2_BACK_HPP