一个多线程的VC++串口通讯实例，选择本机可用的串口，可同进打开多个可用的串口，还可以设置数据位、停止位、校验、波特率，往指定端口发送接收数据等。VC6.0编译通过。-A multi-threaded VC++ Serial communication instance, choose a local serial port available, can be used with the serial number into the open, you can also set the data