一个常用的VC++串口通讯包装类源代码，附有示例程序，示例演示了串口发送消息，打开端口等，是与Windows系统紧密相连的，经常从事系统编程的开发者有时候需要这些。 ,A commonly used VC++ Serial communication wrapper class source code, with a sample application, the sample demonstrates the serial port to send messages, open ports,