GNU bug report logs - #998
after split-window-horizontally scroll works only on first window

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From: martin rudalics <rudalics <at> gmx.at>
To: Davide Viti <zinosat <at> tiscali.it>
Cc: 998 <at> debbugs.gnu.org
Subject: bug#998: after split-window-horizontally scroll works only on first	window
Date: Fri, 19 Sep 2008 10:42:35 +0200

> still not working and I get the very same message as yours (.... #<window 3 on .emacs>)
> when scrolling the wheel on any of the two windows

So the fault is not with `scroll-bar-toolkit-scroll' but with the wrong
window chosen when making the input-event.  This could be related to
your mouse-driver - some of them try to "intelligently" guess the window
you want to scroll.  Finding the reason of this might be non-trivial.

> PS: last night I gave it a go on my Ubuntu machine and it worked; C-h-k gave me this:
>
> <mouse-5> (translated from <down-mouse-5> <mouse-5>) at that spot runs the command mwheel-scroll
>   which is an interactive compiled Lisp function in `mwheel.el'.
> It is bound to <C-mouse-4>, <S-mouse-4>, <mouse-4>, <C-mouse-5>, <S-mouse-5>, <mouse-5>.
> (mwheel-scroll event)
>
> Scroll up or down according to the event.
> This should only be bound to mouse buttons 4 and 5.

I'm afraid the assignment is currently beyond the control of Emacs
whenever you have scroll bars enabled.  I suppose your Emacs on Windows
scrolls the right window (and runs `mwheel-scroll') when you disable
scroll bars, e.g., by putting (scroll-bar-mode -1) in your .emacs?

martin

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