C语言编写的简单串口通讯基础代码，可驱动不同的串口设备

介绍MFC的基本概念和术语以及事件驱动程序设计方法,提供了简单的MFC代码，并作详细解释。-MFC s basic concepts and terminology, as well as event-driven programming, provides a simple MFC code, and a detailed explanation.

此代码实现的是C++中的简单的运算符重载问题。-This code is C++ The simple problem of operator overloading.