where's the sleep() func?

another easy question:

I need a simple delay/sleep in a loop - how do I do it? without getting into threading.

Code:

---

for(int i=0; i<4; ++i)
{
//do something with data[i]
sleep(50);//for example
}

---

a very silly example I know ... but using this could save me making 4 timers.
and yes, generally, it must be a bad idea to put sleep()s into the main thread... but still, it could be handy.

thanks
K

is this for testing purposes?
If yes, have a look at QTest::qSleep ( int ms )

Cheers

:( I can find neither a "QTest" nor a "qSleep" in my docs!
Is it part of the commercial lisence extras ?
thanks
K

QThread::sleep ( unsigned long secs )
QThread::usleep ( unsigned long usecs )
QThread::msleep ( unsigned long msecs )

But it depends what you would like to acheave.
Some things can be done nicer with a slot connected to a QTimer.

I'm using a Qt/X11 Open Source 4.1.0 snapshot

What version are you using. If I remember well, this was new to 4.1.

Cheers

no, Qt3X had it as well.

Quote:

---

Originally Posted by high_flyer

no, Qt3X had it as well.

---

I think we are talking about different things here.
I was referring to
QTest::qSleep ( int ms )
which is new to QT4.1 i believe

not
QThread::sleep ( unsigned long secs )...
which was in Qt3X already as you said.

Our posts must have been made at about the same time.

Cheers

Thanks, that's exactly what I need. Erm, just one thing .. :o if I call
QThread::msleep(10);
I get a compiler error cos it's static protected. I'm not going to have to subclass my object am I? i.e. inheirit QThread?

Kev

Code:

---

I'm not going to have to subclass my object am I? i.e. inheirit QThread?

---

To create your own threads, you have to subclass QThread and reimplement run()

By the way, have you checked your QT version?

Sure, but I don't want another thread. I just want a sleep() func - something to suspend the main thread. A QThread::sleep() i.e. a public static func, would be perfect. Or alternativly, a QThread::currentThread()->sleep() would also do nicely. But I can't do it that way cos the sleep funcs are static protected.

anyway, I'm running 4.0.1 I guess I can update and as you suggest try a QTest::

thanks
K

Yes but sleep IS per thread.
And makes no sense to make a GUI thread (the main thread) sleep.
I don't know however what happens if you want to use sleep in a console application with Qt4...
But this thread might prove interesting for you:
http://lists.trolltech.com/qt-intere...ad00380-0.html
from that thread:

Code:

---

#include <qthread.h>
 
class I : public QThread
{
public:
	static void sleep(unsigned long secs) {
		QThread::sleep(secs);
	}
	static void msleep(unsigned long msecs) {
		QThread::msleep(msecs);
	}
	static void usleep(unsigned long usecs) {
		QThread::usleep(usecs);
	}
};

---

Well, you know what? that's exactly what I want to do, and that's exactly why I want to do it. And, I think, that's exactly how I'll do it!

thanks very much,
Kev