How to execute a functor or a lambda in a given thread in Qt, GCD-style?

Question

In ObjC with GCD, there is a way of executing a lambda in any of the threads that spin an event loop. For example:

dispatch_sync(dispatch_get_main_queue(), ^         


        

Answer 1

May something like this be any useful?

template 
inline static void MyRunLater(Func func) {
    QTimer *t = new QTimer();
    t->moveToThread(qApp->thread());
    t->setSingleShot(true);
    QObject::connect(t, &QTimer::timeout, [=]() {
        func();
        t->deleteLater();
    });
    QMetaObject::invokeMethod(t, "start", Qt::QueuedConnection, Q_ARG(int, 0));
}

This piece of code will make your lambda run on the main thread event loop as soon as it is possible. No args support, this is a very basic code.

NOTE: I didn't test it properly.