Comport - Opening port when not called Com1, Com2 etc

[KNMn]

I am using the windows CreateFile() function to open and communicate to modems via a comport, but have come across some modems (especially internal modems) which present their port as a custom name in place of the usual Com1, Com2.. etc, as viewed in Hyperterminal.

LPCTSTR lpFileName;

lpFileName = "COM1";

HANDLE hComm = CreateFile( lpFileName,
GENERIC_READ | GENERIC_WRITE,
0,
0,
CREATE_NEW,
0,
0);

I would be very greatful if someone could suggest a means of programatically reading the modem port designation for use in this (or other) functions to access the comport.

 

[2ffat]

See if these artcles can help:

http://bcbjournal.com/articles/vol3...tm?PHPSESSID=0aefa32ba1d39a7b895a1756928bbd64

http://bcbjournal.com/articles/vol3/9904/Using_RAS__part_2.htm

Both deal with RAS but the first one talks about enumerating active ports.


James P. Cottingham
-----------------------------------------
^{I'm number 1,229!
I'm number 1,229!}

 

[KNMn]

Thanks for that James. Its given me some clues for investigation. Thanks!
I wonder if I can perhaps use RAS to enumerate the ports, and determine the port names to then use in the old CreateFile() function!?