Qt之利用系统空闲

如何利用系统空闲，处理指定函数？

To make your application perform idle processing (by executing a special function whenever there are no pending events), use a QTimer with 0 timeout. More advanced idle processing schemes can be achieved using processEvents().

• 方法1 使用int QObject::startTimer(int interval, Qt::TimerType timerType = Qt::CoarseTimer)

If interval is 0, then the timer event occurs once every time there are no more window system events to process.

• 方法2 在处理函数中调用processEvents()，这样也可以防止出现主进程卡的情况