WINCE下的串行通信类， 经过严格测试， 非常成熟的串口通信类， 当然此类也可以用在window下， 但是wince不支持重叠IO， window支持重叠IO，所以在windows下最好还是采用重叠IO的方式。-WINCE under serial communication class, rigorously tested, very mature serial communication class, of course, can also be used in such a window, but wince does not support overlapping IO, window supports overlapping IO, so in the best or the use of overlapping windows IO manner.