It will install the whole driver package to the driver store, at least on Vista+.
The "do you trust this software?" question is asked only at this phase. Later, on devnode setup, it will not be asked if the driver is already on the store (again - on all OSes except XP 32, where some strange things occur).
--
Maxim S. Shatskih
Windows DDK MVP
http://www.storagecraft.com
"Melchor" <> wrote in message news:7343A914-6DAE-4528-ACAC-...
> As far as I know, it will validate the catalog file and copy inf files to
> %windor%\inf. However I found without calling this function, driver
> installation still succeed. Now I'm wondering do I really need to call it in
> my driver install program? Thanks.