Spcomm控件测试，Spcomm应用的核心在于主线程、读线程和写线程之间的消息传递机制，而通信数据相关信息的传递也是以消息传递的方式进行的-Spcomm Control Test, Spcomm application lies in the main thread, read thread and write the message passing between threads, and communications data related to the transfer of information is conducted in a way messaging