https://forum.qt.io/topic/87682/begininsertrow-endinsertrow-beginremoverow-etc-keeps-resetting-expanded-items-states
BeginInsertRow/EndInsertRow/BeginRemoveRow etc - keeps resetting expanded items states? | Qt Forum
Feb 11, 2018 - Hey So I'm working on QAbstractItemModels to build up QTreeView. I'm hand managing all the insert/remove/append/remove rows. I initially built it "as is " an...
etckeeps