#include <QCoreApplication>
#include <QTimer>

int main(int argc, char* argv[])
{
	QCoreApplication a(argc, argv);

	QTimer::singleShot(100, [&a] { QMetaObject::invokeMethod(&a, [] { qDebug() << "Hello"; }, Qt::QueuedConnection); });

	QTimer::singleShot(200, [&a] { a.exit(); });

	return a.exec();
}