[1/2] Added a test: registering device interface and gettingdevicepath

Juan Lang juan.lang at gmail.com
Thu Mar 27 11:15:32 CDT 2008

>  GetLastError() returns an unsigned value, and winerror.h lists error values
>  in decimal (if anyone really wants to match a trace with a symbolic name).

That's not strictly true.  The cryptoapi errors are defined as
HRESULTs , but are returned via GetLastError.  More relevant to this
patch is that the setupapi errors are defined as bitmasks, and are
also returned via GetLastError.

I picked %08x for a reason in this code--it's far easier to find the
relevant error using it than using %u.

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