Well not against offering you a beer, or two...(or more :-))
At this point have you considered dropping this third-party Borland stuff completely and using Qt's QTcpSocket to do whatever you want from TCP instead? But I'm not offering to change your own source code over from using Borland TCP to Qt's ;-)
This APi is used for GPIO manipulation from an ethernet GPIO modules :
What you say seems really true, cause the documentation about the use with Visual studio c++ do not refer at any moment about any library, only cpp/h files. I will try to use this documentation and use into my *.pro file only the files used into Visual Studio.
I will made you a feedback of course