SysInternal's WinObj device listing mechanism

Question

SysInternals's WinObj can list all device objects.

I wonder how it can list the devices.

Is there any open source we can read?(or a code snippet)

What is the most significant function I should know?

Answer 1

You can start with SetupDiCreateDeviceInfoList and use other related functions to enumerate all the devices. This stuff is painful to use.