48 class QAction;

    48 class QAction;

    49 class QMenu;

    49 class QMenu;

    50 class QTextEdit;

    50 class QTextEdit;

    51 QT_END_NAMESPACE

    51 QT_END_NAMESPACE

    52 

    52 

    53 class MainWindow : public QMainWindow

    54 class MainWindow : public QMainWindow

    54 {

    55 {

    55     Q_OBJECT

    56     Q_OBJECT

    56 

    57 

    57 public:

    58 public:

    58     MainWindow();

    59     MainWindow();

    59     MainWindow(const QString &fileName);

    61     MainWindow(const QString &fileName);

    60 

    62 

    61 protected:

    63 protected:

    62     void closeEvent(QCloseEvent *event);

    64     void closeEvent(QCloseEvent *event);

    63 

    65