Is there a way to declared a QT signal that can only be listened in within enclosing class?

问题

QT signals are by default protected, which means they can be emitted in the object but can be listened anywhere.

But some signals are implementation details and I'm struggling to find a way to not let it go out of the class scope.

Is there a way to do it?

Update:

I want to use signals because I want to queue some lower priority tasks rather than handle them promptly at the point of emit/call. Is it a bad idea to use Qt::QueuedConnection for this purpose?

来源：https://stackoverflow.com/questions/29150610/is-there-a-way-to-declared-a-qt-signal-that-can-only-be-listened-in-within-enclo