流设备驱动实际上就是导出标准的流接口函数的驱动，这是文档上面的定义。在WinCE中，所有的流设备都导出流设备接口，这样WinCE中的Device Manager可以加载和管理这些流设备驱动。-Stream device driver is actually the standard stream interface functions to export driven, which is the definition of the above documents. In WinCE, all streaming devices are derived stream device interface, such WinCE in the Device Manager can load and manage the flow of device drivers.