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use sleep instead of usleep on window

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This commit is contained in:
Yannick Verdie 2010-07-12 15:24:15 +00:00
parent f2971aebd0
commit e11a77cb70
1 changed files with 18 additions and 0 deletions
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18
modules/highgui/src/window_QT.cpp
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@ -230,6 +230,8 @@ CV_IMPL int cvWaitKey( int arg )
if (arg>0)
timer.start(arg);
//QMutex dummy;
while(!guiMainThread._bTimeOut)
{
qApp->processEvents(QEventLoop::AllEvents);
@ -245,9 +247,25 @@ CV_IMPL int cvWaitKey( int arg )
mutexKey.unlock();
if (result!=-1)
{
break;
}
else
{
/*
* //will not work, I broke the event loop !!!!
dummy.lock();
QWaitCondition waitCondition;
waitCondition.wait(&dummy, 2);
*/
#if defined WIN32 || defined _WIN32 || defined WIN64 || defined _WIN64
sleep(2);
#else
usleep(2);//to decrease CPU usage
#endif
}
}
guiMainThread._bTimeOut = false;
}