Andreas,

> - THackCustomGrid is wrong for D2009: the underlying class definition
> has changed (see TCustomGrid, the definition must be the same, else
> some you get access violations, because Pointers are wrong)

Yes, this definitely is something fixed in the next release. I'm going to
try and get out a new full source 4.93 today with this in it.

> - Custom Double Buffering: no need for it anymore and a source of
> errors in D2009 (comment out PaintWindow(), Paint(), WMPaint())

Would you please provide more details on this?

Kind regards,
Jason Wharton