Why QTreeView only expands on doubleclicks on some of the columns?



  • I have QTreeView with data supplied with QItemSelectionModel with 2 columns.
    These were called from the tree constructor:
    setSelectionBehavior(QAbstractItemView::SelectRows);
    setSelectionMode(QAbstractItemView::SingleSelection);
    setDragDropMode(QAbstractItemView::NoDragDrop);
    setExpandsOnDoubleClick(true);

    But for some reason only doubleclicks on the first column expand the items. And doubleclicks on the second columns do nothing.
    How can I understand why doubleclicks on the second column don't expand the items in the tree?


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