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# mainwindow.h Example File
widgets/scribble/mainwindow.h

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     #ifndef MAINWINDOW_H
     #define MAINWINDOW_H

     #include <QList>
     #include <QMainWindow>

     class ScribbleArea;

     class MainWindow : public QMainWindow
     {
         Q_OBJECT

     public:
         MainWindow();

     protected:
         void closeEvent(QCloseEvent *event);

     private slots:
         void open();
         void save();
         void penColor();
         void penWidth();
         void about();

     private:
         void createActions();
         void createMenus();
         bool maybeSave();
         bool saveFile(const QByteArray &fileFormat);

         ScribbleArea *scribbleArea;

         QMenu *saveAsMenu;
         QMenu *fileMenu;
         QMenu *optionMenu;
         QMenu *helpMenu;

         QAction *openAct;
         QList<QAction *> saveAsActs;
         QAction *exitAct;
         QAction *penColorAct;
         QAction *penWidthAct;
         QAction *printAct;
         QAction *clearScreenAct;
         QAction *aboutAct;
         QAction *aboutQtAct;
     };

     #endif