Delay in QtWidget

KunalShah_4

Hi i am trying to write a simple code for drawPoint , but not able to get the delay. Here is simple code which i have written.

include two header files
#include<QTime>
#include<QCoreApplication>

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

calling delay using : delay(n) //n is seconds..

Not able to get delay..

gfxx

hi,

QTimer::singleShot(100, [=]{ foo(); });

is a possible solution ... but if your intent is to refresh sreen every 100ms I think the better use is QThread with :

this->msleep(100);

at the end of loop in Run call....

regards
giorgio

KunalShah_4

Thank for the reply..

I want to create simple animation in Qt for my students. I have used this->msleep(100); , but I am geeting error"Program has terminated unexpectedly".

I just want draw a point in for loop with some delay in order to show animation.

jsulm

@KunalShah_4 You should take a look at http://doc.qt.io/qt-5/animation.html