调用该Pcomm.dll动态库，完成在C++ Builder环境下的电脑从COM口读取数据。尤其是在串口通信应用、上位机云台控制等。省去自己编写API函数，节省开发者时间。-Call the Pcomm.dll dynamic library, completed in C++ Builder environment computer to read data from the COM port. Especially in serial communications applications, PC PTZ control. Eliminating the need to write your own API functions, saving developers time.