    MainWindow();
    void dockCharts(bool dock);
    void showStatusMessage(const QString &msg, int timeout = 0) { statusBar()->showMessage(msg, timeout); }
  
  public slots:
    void newFile();
    void openFile();
 
</s> remove   void loadFile(const QString &fn);
 </s> add 
  void loadFile(const QString &fn);
    MainWindow();
    void dockCharts(bool dock);
    void showStatusMessage(const QString &msg, int timeout = 0) { statusBar()->showMessage(msg, timeout); }
  void loadFile(const QString &fn);
  
  public slots:
    void newFile();
    void openFile();
keep keep add keep keep keep keep
 cabana: add --dbc command line argument (#27132) 
tools/cabana/mainwin.h