* recommended way to bind mouse-wheel events
@ 2009-02-16 22:41 Drew Adams
2009-02-17 1:54 ` Stefan Monnier
0 siblings, 1 reply; 2+ messages in thread
From: Drew Adams @ 2009-02-16 22:41 UTC (permalink / raw)
To: 'Emacs-Devel devel'
I've read the Elisp manual, node Misc Events, and I've looked at the little bit
of vanilla Elisp code that uses the mouse wheel, but I still have a question
about binding the wheel.
In various places, I've come across code such as this:
(defvar my-map
(let ((my-map (make-sparse-keymap)))
(when mouse-wheel-mode
(mapc (lambda (key)
(define-key my-map key 'my-scroll))
'([mouse-4] [mouse-5]
[C-mouse-4] [C-mouse-5]
[S-mouse-4] [S-mouse-5])))
my-map)
"...")
On Windows, at least with my 5-button mouse, that doesn't work: `mouse-4' and
`mouse-5' are separate mouse buttons.
This works for me, on Windows:
(defvar my-map
(let ((my-map (make-sparse-keymap)))
(when mouse-wheel-mode
(mapc (lambda (key)
(define-key my-map key 'my-scroll))
(list (vector mouse-wheel-up-event)
(vector mouse-wheel-down-event)
(vector (list 'control mouse-wheel-up-event))
(vector (list 'control mouse-wheel-down-event))
(vector (list 'shift mouse-wheel-up-event))
(vector (list 'shift mouse-wheel-down-event)))))
my-map)
"...")
Questions:
Will this code, which uses the event variables, work also on non-Windows
platforms? If so, is this a good way to do it, or is there a better way?
Shouldn't this be documented? (Mice with wheels have been around for decades.)
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: recommended way to bind mouse-wheel events
2009-02-16 22:41 recommended way to bind mouse-wheel events Drew Adams
@ 2009-02-17 1:54 ` Stefan Monnier
0 siblings, 0 replies; 2+ messages in thread
From: Stefan Monnier @ 2009-02-17 1:54 UTC (permalink / raw)
To: Drew Adams; +Cc: 'Emacs-Devel devel'
> Will this code, which uses the event variables, work also on non-Windows
> platforms? If so, is this a good way to do it, or is there a better way?
IIUC it should work more or less everywhere, and while it's not great
it's the best we have so far.
> Shouldn't this be documented? (Mice with wheels have been around
> for decades.)
I'd rather not document this ugly hack. We should indeed remap mouse-4
and mouse-5 to wheel-up and wheel-down (on X11) so those events can be
used everywhere.
Stefan
^ permalink raw reply [flat|nested] 2+ messages in thread
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2009-02-16 22:41 recommended way to bind mouse-wheel events Drew Adams
2009-02-17 1:54 ` Stefan Monnier
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