Alun Harford

Bob Eaton wrote:
> A program I wrote requires DirectX 8, which since XP, I have not needed to
> include in my installer, because XP had DirectX 8 installed automatically.
>
> On Vista, is there a version of DirectX installed by default?
>
> Thanks,
> Bob
>
> P.S. I tried installing the DirectX 8.a runtime (from dx80nteng.exe), but it
> won't install on Vista. Is this a feature?

The DirectX 8 runtime doesn't support Vista (because of when it was
made!). Since DirectX has to interface with the graphics and sound
drivers, it has to know a lot about the internals of the OS.

Vista includes DirectX 9.0L (which can run DirectX 8 programs) and
DirectX 10 (which only runs DirectX 10 programs).

Alun Harford