On 20. Jun 2022, 03:02 +0200, Po Lu <luangruo@yahoo.com>, wrote:
> Gerd Möllmann <gerd.moellmann@gmail.com> writes:
>
> > Why the window pointer is needed in EmacsScroller at all escapes me,
> > ATM. Someone who knows nsterm.c should probably check if it is needed.
>
> It's the scroll bar class, and naturally needs a reference to the window
> it scrolls. Otherwise, how will it set ie.frame_or_window in
> sendScrollEventAtLoc?

Ah, I see.  Thanks.