Hi,
as I told I don't know exactly if QTimer starts its own thread or the main-gui-thread is used for (what is more likely), but QTimer::start() calls QObject::startTimer() which does nasty things in d->threadData->eventDispatcher.
Whereas QTime::currentTime() simply returns a QDate. So without deeper knowledge you can say QTime::currentTime() isn't so expensive. But to be true, the resource saving in that case isn't so much...
Lykurg
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