13    MainWindow(QWidget *parent = 0);

    13    MainWindow(QWidget *parent = 0);

    14    ~MainWindow();

    14    ~MainWindow();

    15   public slots:

    15   public slots:

    16    void open(const QString& = "");

    16    void open(const QString& = "");

    17   private:

    17   private:

    18 

    19 

    19    Ui::MainWindow *ui; 

    20    Ui::MainWindow *ui; 

    20    QFile currentFile_;

    21    QFile currentFile_;

    21    QTextStream input_;

    22    QTextStream input_;

    22 

    23