Derek said:

>'fraid not bubba.  You'll have to slap around the GWorld pixels yourself
>and then copybits.  If it has to be really fast, you can do a lookup table
>or something, especially if your pixels are a fixed depth(s).

Mark said
>I don't know much about this, but maybe you could mess with the color
table
>that is in effect and change it to grayscale.

RC said
>If you don't come up with something along those lines, I have a FN that
>converts color to grayscale using the 1950's luminance values, and the
more
>modern 80's ish one (different phosphors, different luminance).
>Requires rowbyting access, etc. Interestingly enough , comparing my
>conversions to what Photoshop uses on a pixel by pixel basis, I found that
>Photoshop appears to use the older standard.

Thanks for the replies guys.
I'm following up some code from Michael Evans and let you know...

Cheers

Andy P