winetest: Add the ability to retrieve the dll path for com dlls from the registry.

[Huw Davies]

Paul Vriens wrote:
> The attached patch fixes the issue.
> 
> We are using LOAD_LIBRARY_AS_DATAFILE as we don't really want to load 
> the dll but we need some info from it. The problem is that 
> GetModuleFileName can't cope with LOAD_LIBRARY_AS_DATAFILE loaded dlls.
> 
> So will using LoadLibrary introduce issues for this dll (and maybe 
> future com dlls)?
> 
> The get_dll_path logic was introduced for .NET as we ourselves don't 
> always know which dll/version is actually loaded. GetModuleFileName 
> proved to be the most logic approach.
> 
> As these com dlls are hardcoded in the registry I assume we don't even 
> need to call GetModuleFileName and just stick with that value from the 
> registry?

Hi Paul,

Thanks for tracking this down.  There shouldn't be any issues with using 
LoadLibrary, so we can either use your patch or just rely on the info 
from the registry, I don't think it really matters.  Shall I leave you 
to send in a patch?

Thanks again,
Huw.