I'm trying to get multiple RTBs to react simultaenously to keystrokes and mouseclicks.

e.g. if in RTB1 I press PgDn the sister RTBs also do a PgDn, etc so that I can see multiple versions of the text in parallel.

I've got it working fairly well, with one exception,
I have no idea how to capture and respond to RTB scrollbar movements.

Is there an API that might help here?

Thanks, DaveBo