SetupDiGetClassDevs always returns ERROR_IO_PENDING

J

Jerry West

I'm calling SetupDiGetClassDevs to get a handle to a device information set
like so:

hWnd& = SetupDiGetClassDevs(0&, 0&, 0&, &H4)

This always returns an error of 997: ERROR_IO_PENDING

Why does this happen? I still get a return value in hWnd&. Did it fail?

JW
 

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