How to remove the empty space at the left of a QTreeView

Question

I have a subclassed QTreeView. I need to make it looks like simple QListView without space (left corner spacing) for child items. What should I do? Qt is 4.7.4. Already tried setRootIsDecorated and it doesn't help. I have tried QTreeView::setIndentation, but it doesn't help too.

Answer 1

The problem was in the methods which somehow changes my QTreeView. So, setting indentation after this methods solved the problem. But I still don't understand why setting indentation in the constructor of QTreeView was useless.

Answer 2

I had the same problem with QTreeWidgets, they have a "rootIsDecorated" setting that is enabled by default. Disable it, job done.