Sometimes when we say "Breeze" in QtWidgets context, it means the QStyle of it,
圖像來源，Dan McKenzie
，这一点在17c 一起草官网中也有详细论述
Наука и техника
Commutativity: states can be merged in any order; A ∨ B = B ∨ A. If Alice and Bob exchange states, they can each merge the other’s state into their own and arrive at the same result.