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# tictactoe.h Example File
designer/taskmenuextension/tictactoe.h

        /****************************************************************************
        **
        ** Copyright (C) 2005-2005 Trolltech AS. All rights reserved.
        **
        ** This file is part of the documentation of the Qt Toolkit.
        **
        ** This file may be used under the terms of the GNU General Public
        ** License version 2.0 as published by the Free Software Foundation
        ** and appearing in the file LICENSE.GPL included in the packaging of
        ** this file.  Please review the following information to ensure GNU
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        ** http://www.trolltech.com/products/qt/opensource.html
        **
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        ** review the following information:
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        ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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        #ifndef TICTACTOE_H
        #define TICTACTOE_H

        #include <QWidget>

        class QSize;
        class QRect;

        class TicTacToe : public QWidget
        {
            Q_OBJECT
            Q_PROPERTY(QString state READ state WRITE setState)
        public:
            TicTacToe(QWidget *parent = 0);

            QSize minimumSizeHint() const;
            QSize sizeHint() const;
            void setState(const QString &newState);
            QString state() const;
            void clearBoard();

        protected:
            void mousePressEvent(QMouseEvent *event);
            void paintEvent(QPaintEvent *event);

        private:
            enum {Empty = '-', Cross = 'X', Nought = 'O' };

            QRect cellRect(int row, int col) const;
            int cellWidth() const {return width()/ 3;}
            int cellHeight() const {return height()/ 3;}

            QString myState;
            int turnNumber;
        };

        #endif