tictactoe.h Example File

designer/taskmenuextension/tictactoe.h
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 #ifndef TICTACTOE_H
 #define TICTACTOE_H

 #include <QWidget>

 class QRect;
 class QSize;

 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