I am using model-view with QTreeView as a view and a model derived from QAbstractTableModel. One of the columns has custom delegate (spinbox) for editing values.

Question: I can't find a way to make a delegate view constantly visible. I want spinbox to be always visible in a treeview, not only when treeview cell of the "spinbox" column is in edit mode.

Any advise or link to the documentation is appreciated. Thanks