Re: getting handle to device

are you calling IoSetDeviceInterfaceState(..., TRUE) as well?

d

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"Brian" <Brian@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message news:2E634CFF-0A2B-4455-9237-1973AB9978E9@xxxxxxxxxxxxxxxx
This one should be a no-brainer, I just added a dispatch routine to my bus
filter driver that is supposed to return status information back. I register
the interface in the AddDevice routine. This appears to be working, as I can
see each instance enumerated under my GUID in the
currentcontrolset\Control\DeviceClasses. The problem is after modifying the
toaster examples enum application to use my GUID, I the
SetupDiEnumDeviceInterfaces call fails and the last error is
ERROR_NO_MORE_ITEMS. I double checked that I am using my new GUID, and that
the correct number of instances of my device is in the registry. What I
would like to know is how can I tell if my driver is not registering the
interface correctly, or am I not accessing the interface correctly?

Thanks

Brian

.

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