这段代码将使您的lambda尽可能快地在主线程事件循环上运行。没有args支持，这是一个非常基本的代码。
(new QtPrivate::QFunctorSlotObject<Functor, 0, typename QtPrivate::List_Left<void, 0>::Value, void> (std::forward<Functor>(fun)), receiver, 0, 0, 0, (void**)malloc(sizeof(void*))) {} // Metacalls with slot objects require an argument array for the return type, even if it's...