QTimer & Thread, adding it to running thread...

[Dariusz]

Hey

I'm trying to add timers to a running thread so that I can have more options when I play with my worker... here is my broken idea >

            auto item = new QTimer();
            item->setInterval(interval);
            //QMetaObject::invokeMethod(item, [this, i = item]() {
            //item->setParent(nullptr);
            item->moveToThread(this);
            //}, Qt::QueuedConnection);
            QMetaObject::invokeMethod(item->thread(), [this, i = item]() {
                qDebug() << "Gonna run timer!";
                i->start();
                qDebug() << "Gonna run timer!";
                });
            mExtraTimers.append(item);
            int id = mExtraTimers.size();
            qDebug() << item<<item->thread() << (QObject*)this;
            connect(this, &QThread::finished, item, &QObject::deleteLater, Qt::DirectConnection);
            connect(item, &QTimer::timeout, this, [this, i = id]() { Q_EMIT extraTriggerAction(i); }, Qt::DirectConnection);
            return id;

The idea is that I can add extra timers with different intervals to call a signal. Then when using direcConnection I can execute code depending on id of timer and do some processing...
But whatever I try I can't start the timer... I keep getting QObject::startTimer: Timers can only be used with threads started with QThread
How to bite it ?

TIA

[Dariusz]

@SGaist said in QTimer & Thread, adding it to running thread...:

With only bits of your code it's not possible to understand your implementation and the possible issues you might be facing.

Today is special day for my brain and I literally fail at basics... I forgot to start the worker... thus its event loop never run... thus it never started the damn timmer... ehhh!!!!

Everything works fine once I started the worker... yayyyy I learned something new! :- )

[SGaist]

Hi,

When are calling this ?
Do you have the main event loop running ?

[Dariusz]

@SGaist said in QTimer & Thread, adding it to running thread...:

Hi,

When are calling this ?
Do you have the main event loop running ?

It's being called from the main thread after the worker started. So worker starts and it has 1 default timmer >

            setObjectName(threadName + "_thread");
            mTrigger = new QTimer();
            mTrigger->setInterval(threadInterval);
            mTrigger->moveToThread(this);
            connect(mTrigger, &QTimer::timeout, this, &icGenericTimeoutWorker::triggerSignal,Qt::DirectConnection);
            connect(this, &QThread::started, this, &icGenericTimeoutWorker::startIcTimmer,Qt::DirectConnection);
            connect(this, &QThread::finished, mTrigger, &QObject::deleteLater,Qt::DirectConnection);
            connect(this, &QThread::finished, this, &QObject::deleteLater);

And the function in 1st post is where I want to add another timer to the existing worker...

[SGaist]

With only bits of your code it's not possible to understand your implementation and the possible issues you might be facing.

[Dariusz]

@SGaist said in QTimer & Thread, adding it to running thread...:

With only bits of your code it's not possible to understand your implementation and the possible issues you might be facing.

Today is special day for my brain and I literally fail at basics... I forgot to start the worker... thus its event loop never run... thus it never started the damn timmer... ehhh!!!!

Everything works fine once I started the worker... yayyyy I learned something new! :- )