I have been trying to determine if a USB serial port (COM) port is monitored by a system bus driver without success. Basically I have an application that monitors a com port via a filter device driver. I was able to do this after reading this article from the Dr Dobb's magazine. Now what am trying to achieve in a seperate app is to be able to determine if there is an app hooked to a particular com port using a filter device driver. Can anyone help or guide me
How to know a filter device driver is hooked to a com port
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