TAPI Terminal component and add some extra features using the TAPI configuration dialogs. The read and write parts of the terminal are seperate threads, this suited me, but if you require sync ed comms then you will need to change that to one

VC++带线程的API串口通信，简单的API串口实现，调试已经通过-VC++ take thread API serial communication, simple API serial implementation, debugging through