Can we use Windows Kits idl files?

[James McDonnell]

Are the Windows Kits SDK WinRT .idl files acceptable to read-rework 
inside the wine source? They are akin to header files, no?

I asked on the irc but didn't get any reply.

There was a follow up comment asking about ReactOS headers as well:
> on the topic of headers, are we allowed to look at ReactOS NDK headerS
> s/headerS/headers/
> they contain internal structure definitions only, nothing else

Thank you,

James