I would think that investigating IPropertyStore on MSDN would lead you in
the right direction. Additionally, Ben --
http://blogs.msdn.com/benkaras/ -- has written a fair amount about property
handlers for "custom" file types.
As re: reusing existing PropertyHandlers for your own private type -- I'm
not aware of the internals of that code, so couldn't speak to it.
This is definitely not an area of my expertise, but -- hopefully this
propels you along in the right direction.
--
Speaking for myself only.
See
http://zachd.com/pss/pss.html for some helpful WMP info.
This posting is provided "AS IS" with no warranties, and confers no rights.
--
"anon0918" <anon0918@discussions.microsoft.com> wrote in message
news:58876D24-444E-41EB-A47A-A7464B13AB3A@microsoft.com...
> The files in question are actually DLLs, with different extensions. In XP,
> Windows interpreted the file version fine, but Vista doesn't want to. Do
> we
> need to write a DLL that knows how to open that filetype and read the
> properties? Can you give me any useful links explaining this?
>
> Thanks.
>
>
> "zachd [MSFT]" wrote:
>
>>
>> What's the registered Property Handler for that file type?
>>
>> --
>> Speaking for myself only.
>> See http://zachd.com/pss/pss.html for some helpful WMP info.
>> This posting is provided "AS IS" with no warranties, and confers no
>> rights.
>> --
>> "anon0918" <anon0918@discussions.microsoft.com> wrote in message
>> news:1C94B350-569F-4292-BA0A-41258F5C72D7@microsoft.com...
>> > XP would always show a file's "Product version" even if it was a file
>> > of
>> > unknown format. I could go into Details view, add the Product Version
>> > column,
>> > and it would show up.
>> >
>> > Now in Vista, the "file version" won't show up unless I switch the file
>> > extension to DLL, for example. Even if I right-click the file and go to
>> > Properties, there's no version tab (again unless I switch the
>> > extension).
>> >
>> > We're always dealing with file versions in our business so this is very
>> > important to be able to easily determine file versions.
>> >
>> > Even if I associate the file with a program, still nada.
>>
>>
>>