message: Use publicly deleted copy operations
diff: @@ -15,6 +15,8 @@ public:
  };
  MajorEventAnnouncement();
  + MajorEventAnnouncement(const MajorEventAnnouncement&) = delete;
  + MajorEventAnnouncement& operator=(const MajorEventAnnouncement&) = delete;
  ~MajorEventAnnouncement() override;
  void announcement(AnnouncementType a);
  @@ -27,12 +29,7 @@ protected:
  private:
  void btnCloseClicked();
  - MajorEventAnnouncement(const MajorEventAnnouncement&) = delete;
  - MajorEventAnnouncement& operator=(const MajorEventAnnouncement&) = delete;
  -
  const NAS2D::Image& mHeader;
  -
  std::string mMessage;
  -
  Button btnClose{"Okay"};
  };
  