提供了MFC中的CTimer类的功能，但它不需要窗口的支持，使用时，只需继承CTimerSupport类。

计时器是持续运行的，如果不被KillTimer()函数停止；会持续调用OnTimer()函数。-the MFC CTimer the functional category, but it does not need the support of the window, use, only inherit CTimerSupport category. Timer is a continuous operation, if not KillTimer () function ceased; will continue to call OnTimer () function.