QObject::deleteLater across a QThread

Question

I\'m looking for a solution to schedule the deletion of an object across threads. The docs about how deleteLater behave are not entirely clear. Can I call this

Answer 1

Looking at the Qt 4 code and Qt 5 code, deleteLater() just invokes QCoreApplication::postEvent() which is explicitly declared thread-safe. So, it should be fine to just call it directly. As the event queue is processed in the object's owner thread, deletion will happen in thread A.

Only Qt 5 QObject documentation explicitly lists deleteLater() as thread safe. If you want to completely rely on documented behaviour in Qt 4, use postEvent().