Hi all,

I am facing a problem when trying to open a com port (COM1), it says, it is already in use.
I tried to check the Mice and other pointing devices through device manager. I found that either a PS / 2 or a Serial Microsoft Ball point is enabled.
If I disable PS / 2 and Serial Microsoft Ball point, I dont get that problem.

I would like to know what is occupying COM1 and how to disable it through C / C++ Code.

Please help.

Thanks in advance,
Doll.