Have you run the modeltest on it?

Scott

From: Interest <interest-boun...@qt-project.org> On Behalf Of Michael Jackson
Sent: Tuesday, May 3, 2022 12:57 PM
To: Qt Interest List <interest@qt-project.org>
Subject: [Interest] QColumnView and QTreeView using same model

I have a custom QAbstractItemModel implementation that works correctly when 
using a QTreeView, i.e., I can open the complete hierarchy of the tree without 
any issues. I switched up to the QColumnView due to size constraints and now 
using the same exact instance of the model I can only navigate into the first 
item that has children. Other items at the root level that have children are 
shown with the little graphic arrow as having children but none of the children 
are actually listed in the next column over. I even put both the QTreeView and 
the QColumnView into my Widget at the same time with the same instance of the 
model and the QTreeView does not have any problems displaying the various 
levels.

Has anyone else seen something like this? I took at look at the Qt bug database 
and nothing really stuck out. I tried a QFileSystemModel for giggles and that 
worked as expected. So clearly I’ve got something sort of messed up in my 
custom model that allows the treeview to work but not the columnview. Odd.
--
Mike Jackson
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