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! :- )