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);

}