Hmmm...I'd like to avoid creating another custom dialog.

But regardless, radio buttons are not the way.
They are poorly ported, for this use, anyway.
They look like "normal radio buttons", and I couldn't get them to expand horizontally, so you have to click on the (very) little circle, or the label to select.
Checkbox is also not the answer, because I don't need multiple selection

I was hopping I could just pass some flag to QInputDialog.