QTimer make traitement out of for loop ?

imene

Hi,
what i have to do to keep the traitement inside qtimer tirning without passing to the next if condition here ?

for(..)
{
if(..){ 
QTimer::singleShot(6000, [=](){
                    qDebug()<<"Timer on do something after 6 second...";


               // i want to set a time out condition here

               });//timer ends here
}//end if
else
{..}
}//end for

SGaist

Hi,

Are you asking to block the code in that if block until the timer times out and the lambda is finished ?

JonB

@imene
Please don't post multiple questions for the same thing, your https://forum.qt.io/topic/138912/how-can-i-set-time-out-condition-in-the-timer, it's not fair on the duplicated effort you may get people to do.

imene

@SGaist yes exactelly

imene

@JonB Sorry i just i wanted to make it more clear here i will delete the other topic

SGaist

When you want to make things clearer, you can simply edit your original thread message and add more information with a note stating what you added.

JonB

@imene said in QTimer make traitement out of for loop ?:

i will delete the other topic

And please do not do this! You had asked different questions there first, people had taken time to respond, and now you have deleted the whole topic. Once people at least respond in a topic please don't delete it; you can always mark it as Solved and raise a different topic for a different question.

imene

Okay i restored it, i'm new at this Forum and i was little bit confused how to make a clear topic.
https://forum.qt.io/topic/138912/how-can-i-set-time-out-condition-in-the-timer
i'm sorry..

JonB

@imene
Not a problem :) Actually it looks like I remembered wrong and people had not started responding in that thread!

SGaist

Based on you other thread, I would say that you should refactor your payload processing logic.

Rather than I tight loop that you are going to block use for example invokeMethod when you are done with the processing of the current payload. That way, for that particular case, you will call invokeMethod as the last thing in you lambda to continue the processing. Your loop will otherwise continue.

imene

@SGaist good like this method preposed by @mpergand here (https://forum.qt.io/topic/138912/how-can-i-set-time-out-condition-in-the-timer-duplicated-https-forum-qt-io-topic-138913-qtimer-make-traitement-out-of-for-loop/3)

SGaist

That's one way of implementing it.

imene

@SGaist is there a way more easy than that ? with another type of timer ?
can i use this signal void QTimer::timeout()?

mpergand

@imene
For your long delay, you can use lambda as well,
Although I don't see any real benefit with it.

imene

@mpergand
What do you mean with lamba ?

jsulm

@imene C++ lambda functions: https://en.cppreference.com/w/cpp/language/lambda

imene

QTimer::singleShot :This static function calls a slot after a given time interval; in my case i want the code to make the traitement inside QTimer::singleShot before it pass to make the next if condition .

Christian Ehrlicher

@imene said in QTimer make traitement out of for loop ?:

to make the traitement inside QTimer::singleShot before it pass to make the next if condition .

Let the QTimer::singleShot() fire and check for your codition inside the slot.

imene

@Christian-Ehrlicher how ?

Christian Ehrlicher

@imene said in QTimer make traitement out of for loop ?:

how ?

if (yourCoditionIsMet) {
  doSomethingYouWant()
}

maybe?