pcomm.lib串口编程库。PComm 库函数是台湾MOXA公司提供的，他为用户提供了基于win32 api的开发接口。 PComm库函数分为7大类：控制函数、数据输入函数、数据输出函数、状态函数、事件驱动函数、传输文件函数、特殊设定函数；上述函数均返回int型数据，若函数调用成功则返回0，否则返回一个负整数。-pcomm.lib serial programming library. PComm library functions Taiwan MOXA company, to provide users with the interface based on the Win32 API development. PComm library functions are divided into 7 categories: control function, data input function, a function of the data output state function, event-driven function, transfer files, functions, special setting function　the function returns an int data if the function succeeds it returns 0, otherwise it returns a negative integer.