How do I create a pause/wait function using Qt?

c++ qt sleep wait
Zac picture Zac · Sep 20, 2010 · Viewed 202.1k times · Source

I'm playing around with Qt, and I want to create a simple pause between two commands. However it won't seem to let me use Sleep(int mili);, and I can't find any obvious wait functions.

I am basically just making a console application to test some class code which will later be included in a proper Qt GUI, so for now I'm not bothered about breaking the whole event-driven model.

Answer

Kartik Sharma picture Kartik Sharma · Jul 14, 2012

I wrote a super simple delay function for an application I developed in Qt.

I would advise you to use this code rather than the sleep function as it won't let your GUI freeze.

Here is the code:

void delay()
{
    QTime dieTime= QTime::currentTime().addSecs(1);
    while (QTime::currentTime() < dieTime)
        QCoreApplication::processEvents(QEventLoop::AllEvents, 100);
}

To delay an event by n seconds - use addSecs(n).

Related questions

How to convert int to QString?

Is there a QString function which takes an int and outputs it as a QString?

Read More
How to convert QString to std::string?

I am trying to do something like this: QString string; // do things... std::cout << string << std::endl; but the code doesn't compile. How to output the content of qstring into the console (e.g. for debugging …

Read More
How to print to console when using Qt

I'm using Qt4 and C++ for making some programs in computer graphics. I need to be able to print some variables in my console at run-time, not debugging, but cout doesn't seem to work even if I add the libraries. …

Read More