[SOLVED] Deleting an item from QTreeWidget

[xsid]

No, still crash with message "ASSERT failure in QList<T>::at: "index out of range"". What am I doing wrong? Crash appears even I'm trying to clear treeWidget and load data in it again, not just on item deleting.

[Radek]

Then the problem is with foreach. Most likely, as you delete the list items, the indexing of items (crashing is QTreeWidget::at()) becomes invalid. I suggest while and using QList::takeFirst() as a more sure processing the list. takeFirst() removes the first item from the list and returns it (or it returns nullptr if the list is empty).

[xsid]

The problem was not in code. Every solutions above works. In the widget properties MUST be set selectionBehavior->SelectRows (I guess in case of multiple columns such mine case). Thank you, Radek, your code is very usefull and thanks for clarification about how to delete TreeWidget item correctly!