Emit a signal fixed number of time with QTimer

Anurag2904

Hi All,

I am working on a project where i draw an ellipse on Graphics View (using scene). I am using QTimer to emit a signal which triggers the SLOT fuction which draws on Graphics View. After drawing for 9 such times, I want to stop and now draw any more. Is there a way to make QTimer not trigger after 9 signals?

I am using signals to draw on Graphics View, because after each draw I want new ellipse to show immediately. Is there any other solution ?

Thanks,
Anurag

SGaist

Hi and welcome to devnet,

Yes: count the number of occurrences it fired and stop the timer after that.

yuvaram

Hi @Anurag2904

This would help u.

#include "sample1.h"

sample1::sample1(QObject *parent) : QObject(parent)
{
count = 0;
mtimer.setInterval(1000);
connect(&mtimer,SIGNAL(timeout()),this,SLOT(sLotTimer()));
mtimer.start();
}

void sample1::sLotTimer()
{

count ++;
//business logic
qDebug()<<Q_FUNC_INFO<<endl;
if(count <= 9){
    mtimer.start();
}else{
    mtimer.stop();
}

}

Anurag2904

Thanks a lot guys. Issue solved by issuing stop() when counter hits 9