qdragLeaveEvent Problem

[Furkan]

Hello. In my application I have a QListWidet I want this widget's items to be reordered so I set these properties.

setDefaultDropAction(Qt::MoveAction);
    setDropIndicatorShown(true);
    setDragDropMode(DragOnly);
    setAcceptDrops(true);
    setAlternatingRowColors(true);

setDefaultDropAction(Qt::MoveAction);
    setDropIndicatorShown(true);
    setDragDropMode(DragOnly);
    setAcceptDrops(true);
    setAlternatingRowColors(true);

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Also If I move a list widget item out of the list widget I want to add that item as a bookmark.

void TabsListWidget::dragLeaveEvent(QDragLeaveEvent* event)
{
    setDropIndicatorShown(false);
    setDragDropMode(NoDragDrop);
    setAcceptDrops(false);
    setAlternatingRowColors(false);
    QTimer::singleShot(200, this, SLOT(startDragging()));
    QListWidget::dragLeaveEvent(event);
}

void TabsListWidget::dragLeaveEvent(QDragLeaveEvent* event)
{
    setDropIndicatorShown(false);
    setDragDropMode(NoDragDrop);
    setAcceptDrops(false);
    setAlternatingRowColors(false);
    QTimer::singleShot(200, this, SLOT(startDragging()));
    QListWidget::dragLeaveEvent(event);
}

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I can add the item as a bookmark but my app crashes when exit. Can anybody tell me what's wrong here?
The whole Cpp file >> http://paste.kde.org/1270/