setting row height in QTreeView?

[gfunk]

I see that you can resize the header() to change column widths in a QTreeView, but how can you set the row heights?

In particular, I am trying to call setIndexWidget() to add some pushbuttons into my Treeview, but when I do that, the rows suddenly become narrower, and I can barely read the text on my button. I'm hoping there is a way to do it without having to subclass an existing class?

I tried setGeometry() on the QPushButton and it didn't change size. I tried setMinimumSize() and it drew the button larger but the row height stayed the same, thus causing some drawing overlap.