PortMon is a good tool, but for an entirely different purporse.

It "sits" on the driver and monitors all the accesses to it. Only if another program reads from the COM, you see it in PortMon. It doesn't monitor the ports on its own.

In reply to Re: Freeware port monitor by spurperl
in thread Marrying Tk, threads and SerialPort - a COM port monitor by spurperl

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