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 | ** This file is part of the examples of the Qt Toolkit. | 
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 |  | 
 | #ifndef MAINWINDOW_H | 
 | #define MAINWINDOW_H | 
 |  | 
 | #include "document.h" | 
 |  | 
 | #include <QMainWindow> | 
 | #include <QString> | 
 |  | 
 | QT_BEGIN_NAMESPACE | 
 | namespace Ui { | 
 | class MainWindow; | 
 | } | 
 | QT_END_NAMESPACE | 
 |  | 
 | class MainWindow : public QMainWindow | 
 | { | 
 |     Q_OBJECT | 
 |  | 
 | public: | 
 |     explicit MainWindow(QWidget *parent = nullptr); | 
 |     ~MainWindow(); | 
 |  | 
 |     void openFile(const QString &path); | 
 |  | 
 | private slots: | 
 |     void onFileNew(); | 
 |     void onFileOpen(); | 
 |     void onFileSave(); | 
 |     void onFileSaveAs(); | 
 |     void onExit(); | 
 |  | 
 | private: | 
 |     bool isModified() const; | 
 |  | 
 |     Ui::MainWindow *ui; | 
 |     QString m_filePath; | 
 |     Document m_content; | 
 | }; | 
 |  | 
 | #endif // MAINWINDOW_H |