WINCE平台的虚拟串口实现，现在使用WINCE平台的不多了，但是可以方便转换到PC平台，源码稍作修改即可应用。-WINCE platform of the virtual serial port, and now the use of WINCE platform is not much, but it can be easily converted to PC platform, the source code can be modified to use a little.