QTreeView column resize problem

[ChiliPalmer]

Did you try to do this:

yourView->header()->setResizeMode(0, QHeaderView::ResizeToContents);
yourView->header()->setStretchLastSection(true);

yourView->header()->setResizeMode(0, QHeaderView::ResizeToContents);
yourView->header()->setStretchLastSection(true);

To copy to clipboard, switch view to plain text mode 

That should do what you want, without you having to resize the column after each expansion.