when enable Touch Screen in QListWidget double click event not work

[AmrCoder]

i use this code to enable touch screen in QListWidget

    ui->listWidget->setAttribute(Qt::WA_AcceptTouchEvents,true);
    ui->listWidget->setVerticalScrollMode(QAbstractItemView::ScrollPerPixel);
    ui->listWidget->setHorizontalScrollMode(QAbstractItemView::ScrollPerPixel);
    QScroller::grabGesture(ui->listWidget,QScroller::TouchGesture);

the touch work great with no problem but i have a double click signal in the QListWidget when i double click on item in listwidget the double click slot not work ?
Edit
the problem appears especially when the items need to be scrolled but if the item's number is small not need to scroll it work fine
How can i solve this problem
Thanks in Advance