92             if ((i + j) & 1)

    92             if ((i + j) & 1)

    93                 item = new QGraphicsEllipseItem(0, 0, 50, 50);

    93                 item = new QGraphicsEllipseItem(0, 0, 50, 50);

    94             else

    94             else

    95                 item = new QGraphicsRectItem(0, 0, 50, 50);

    95                 item = new QGraphicsRectItem(0, 0, 50, 50);

    96 

    96 

    98             item->setBrush(QBrush(Qt::white));

    98             item->setBrush(QBrush(Qt::white));

    99             QGraphicsDropShadowEffect *effect = new QGraphicsDropShadowEffect;

    99             QGraphicsDropShadowEffect *effect = new QGraphicsDropShadowEffect;

   100             effect->setBlurRadius(8);

   100             effect->setBlurRadius(8);

   101             item->setGraphicsEffect(effect);

   101             item->setGraphicsEffect(effect);

   102             item->setZValue(1);

   102             item->setZValue(1);