63 void ItemNum::wheelEvent ( QWheelEvent * event )

    64 {

    65     if (nonInteractive) return;

    66     if (!enabled)

    67     {

    68         event->ignore();

    69         return;

    70     }

    71     event->accept();

    72 

    73     bool up = (event->delta() > 0); // positive delta is up, negative is down

    74 

    75     // negative delta on horizontal wheel is not left, but right

    76     if (event->orientation() == Qt::Horizontal)

    77         up = !up;

    78 

    79     if(up)

    80     {

    81         if((infinityState && numItems <= maxItems) || (!infinityState && numItems < maxItems))

    82             incItems();

    83     }

    84     else

    85     {

    86         if(numItems > minItems)

    87             decItems();

    88     }

    89   repaint();

    90 }