being_smart_about_ownership_3.cpp

//Return a unique pointer,meaning we have sole ownership of the widget
unique_ptr get_widget();

void use_widget() {
  //Thus we don't need to Lock it to call its methods
  //We can move the unique_ptr to function after we are done with it 
  //Or just forget about it and it shall free the underlying ressource
  auto widget_ptr = get_widget();
  if(widget_ptr->get_status() == 42)
    widget_ptr->trigger_event();
}