利用API函数编写的一个基于对话框编程的串口通信界面-API functions written in a dialog-based programming, serial communication interface

基于API函数的串口通信程序，很实用的的一个程序。-window API Serial communication

文件主要是实现API串口通讯，示例了MFC的串口类和API函数的使用，对学习API串口通信的人有帮助。-Document is mainly to achieve API serial communication, the example of the MFC serial port class and the use of API function, the study of API serial communication to help people.