Method AddRetCallback

core/graphics/event/EventController.h:37–37

  public:
    void AddCallback(std::string type, EventCallbackType callback) { listeners_[type].push_back(callback); }
    void AddRetCallback(std::string type, EventRetCallbackType callback) { retListeners_[type].push_back(callback); }

    void RemoveCallback(std::string type) { listeners_.erase(type); }
    void RemoveRetCallback(std::string type) { retListeners_.erase(type); }