Visual C++提供了一种好用的ActiveX控件Microsoft Communications Control(即MSComm)来支持应用程序对串口的访问。本文介绍MSComm在VC++的添加使用实例及给出了mscomm.h头文件主要代码关键部分的注释。-Visual C++ Provides an easy-to-use ActiveX control Microsoft Communications Control (ie MSComm) to support the application of the serial port visit. This article describes the MSComm in VC++ Add the use of examples and gives the header file mscomm.h key part of the main code of the Notes.