Hi Chris,
I apologize for the delay in responding. Apparently, I had mistakenly marked all posts as read and did not realize I did not respond to your message.
The TRzDBGrid does indeed descend from the TCustomDBGrid component so that it does inherit basic functionality from the ancestor control.
As for adding touch support, I would suggest taking a look at the gesture support included in Delphi. That way you could leverage scrolling without having to interact with the scroll bar itself.
Ray