qt忙等与非忙等

非忙等：

void delay(int msec) {

　　QTime end = QTime::currentTime().addMSecs(msec);

while( QTime::currentTime() < end)

QCoreApplication::processEvents(QEventLoop::AllEvents, 100);

}

忙等：

void delayBlock(int msec) {

QTime start = QTime::currentTime();

QTime now;

　 do{

　　    now=QTime::currentTime();

　}while (start.msecsTo(now)<=msec);

}