[Mac] Why the actual size of the pushbutton is bigger than rectangle of its border?
It is easy to "see":http://tinypic.com/r/15mh0l2/8 in the Qt Designer. The selected area bigger than button's border.
There is no margins in this button.
(There is no such problem for QToolButton.)
I think the metric include space for the button drop shadow, which does not exists anymore in OS X 10.9 but use to be there in early versions.