Hello,

I'm having trouble implementing a QListWidget with custom items that can be reordered by dragging and dropping. The problem is when I make a fast double click (a very short drag&drop) on an item, the item sometimes disappears from the QListWidget.

This is the constructor for my Widget:

ListPopisiDragDrop::ListPopisiDragDrop(QWidget *parent) :
    QListWidget(parent)
{
    setSelectionMode(QAbstractItemView::SingleSelection);
    setDragEnabled(true);
    viewport()->setAcceptDrops(true);
    setDefaultDropAction(Qt::MoveAction);
    setDropIndicatorShown(true);
    setDragDropMode(QAbstractItemView::InternalMove);
}

also the drop event:

void ListPopisiDragDrop::dropEvent(QDropEvent *event){

    int startRow=currentIndex().row();

    QListWidget::dropEvent(event);

    int endRow=currentIndex().row();

    //more code...
}

Custom items are made by implementing paint() and sizeHint() functions from QAbstractItemDelegate.

When the problem with disappearing items happens, the dropEvent isn't even called.

I really don't know what is happening and if I'm doing something wrong. Any help is appreciated.

Thanks!

Edit: I'm running the application on a Symbian S60 5th edition phone.

Edit2: If I add this line to the constructor:

setDragDropOverwriteMode(true);

the item in the list still disappears, but an empty row stays in it's place.