Access Multiple COM Port in C++

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Hi,
I am new for C++.In my Project,I used a DLL for my Project.In that DLL created in C++ for accessing COM Port.But i need to Change the Multiple COM Port access at same time.I don't know how to achieve this ?Please help me.
Thanks
Regards,
Lakshmi Narayanan.S

Posted 26-Jul-11 19:05pm

naraayanan

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Debojyoti Majumder · Answer 1 · 2011-07-26T19:56:00

You need to know some basic file operation using Windows APIs.
Go through this apis first
http://msdn.microsoft.com/en-us/library/aa363858%28v=vs.85%29.aspx[^]
http://msdn.microsoft.com/en-us/library/aa365467%28VS.85%29.aspx[^]
http://msdn.microsoft.com/en-us/library/ms724211%28v=VS.85%29.aspx[^]

You can get a handle to several com ports by using CreateFile with file name like COM1,COM2,COM3 and so on.