Hi

i have a QTreeView witch QStandardItemModel.

I've two columns - first contain row number, second some data. Some rows in data column can be expanded or rather should be - QTreeView displays "+" only if expandable row is a first column.
I tried to add empty elements to row 1st column if row in 2nd is expandable. It causes that "+" appears in 1st column but second column is not automatically expanded.

How can i solve it ?