mainwindow.h Example File
^{richtext/calendar/mainwindow.h}

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    #ifndef MAINWINDOW_H
    #define MAINWINDOW_H

    #include <QDate>
    #include <QMainWindow>

    class QTextBrowser;

    class MainWindow : public QMainWindow
    {
        Q_OBJECT

    public:
        MainWindow();

    public slots:
        void setFontSize(int size);
        void setMonth(int month);
        void setYear(QDate date);

    private:
        void insertCalendar();

        int fontSize;
        QDate selectedDate;
        QTextBrowser *editor;
    };

    #endif