https://forum.qt.io/topic/33555/solved-persisiting-qtreeview-s-header-between-model-updates
[SOLVED] Persisiting QTreeView's header between model updates | Qt Forum
Oct 27, 2013 - I'm migrating my project from QTreeWidget to QtreeView. With a widget there's no problem with the header - it lives as long as the widget does, so I just sav...
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