Russian Qt Forum

C++ (Qt)
QElapsedTimer timer;
timer.start();

C++ (Qt)
qDebug() << timer.elapsed();

C++ (Qt)
qDebug() << "The slow operation took" << timer.elapsed() << "milliseconds";
qDebug() << "The slow operation took" << timer.elapsed()/1000 << "seconds";
qDebug() << "The slow operation took" << timer.elapsed()/1000/60 << "minutes";

C++ (Qt)
#include <QtCore/QCoreApplication>
#include <QElapsedTimer>
#include <Windows.h>
 
int main(int argc, char *argv[])
{
    QCoreApplication a(argc, argv);
 
    QElapsedTimer t;
    t.start();
    qDebug("%d", t.elapsed());
    Sleep(10000);
    qDebug("%d", t.elapsed());
 
    return a.exec();
}

C++ (Qt)
class MyClass : public QObject
{
	...
public slots:
	void		slot1()
	{
		timer.start();
	}
 
	void		slot2()
	{
		qint64 res = timer.elapsed();
		qDebug() << "The slow operation took" << res << "milliseconds";
		qDebug() << "The slow operation took" << res/1000 << "seconds";
		qDebug() << "The slow operation took" << res/1000/60 << "minutes";
	}
 
private:
	QElapsedTimer		timer;
};
 

C++ (Qt)
public:
    QElapsedTimer		timer;

C++ (Qt)
qlonglong res = timer.elapsed();
qlonglong s = res/1000; QString ss = QString::number(s);
qlonglong m = s/60; QString mm = QString::number(m);
qlonglong h = m/60; QString hh = QString::number(h);
QString timeelapsed = hh + ":" + mm + ":" + ss;
 
qDebug() << res << "ms";
qDebug() << "Времени прошло: " << timeelapsed;

C++ (Qt)
int res = timer.elapsed();  // elapsed вернет int
int sec = res / 1000; 
int min = sec / 60; 
sec %= 60;
int hr = min / 60; 
min %= 60;
char buf[128];
sprintf(buf, "%2d : %2d : %2d", hr, min, sec);
qDebug() << "Времени прошло: " << buf;
 

C++ (Qt)
    qint64 res = timer.elapsed();
    qint64 sec = res / 1000;
    qint64 min = sec / 60;
    qint64 hr = min / 60;
    sec %= 60;
    min %= 60;
 
    QString timeElapsed = QString("%1:%2:%3").arg(hr).arg(min).arg(sec);
    //QString timeElapsed; QTextStream(&timeElapsed) << hr << ":" << min << ":" << sec;
 
    qDebug() << res << "ms";
    qDebug() << "Времени прошло: " << timeElapsed;