if a serial port is in use, is there any way to find out what particular program is using that serial port?
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if a serial port is in use, is there any way to find out what particular program is using that serial port?
You need look into the MS Comm control component in VB6. Also, if you do a search for "VB serial communication", it returns many helpful resources.
Google search
http://www.google.com/search?hl=en&c...rt&btnG=Search
MS Comm Control Techniques
http://www.microsoft.com/downloads/d...displaylang=en
Good luck,