Variable: horizontal-scroll-bar-mode-hook

horizontal-scroll-bar-mode-hook is a customizable variable defined in scroll-bar.el.gz.

Value

nil

Documentation

Hook run after entering or leaving horizontal-scroll-bar-mode(var)/horizontal-scroll-bar-mode(fun).

No problems result if this variable is not bound. add-hook automatically binds it. (This is true for all hook variables.)

Source Code

;; Defined in /usr/src/emacs/lisp/scroll-bar.el.gz
(define-minor-mode horizontal-scroll-bar-mode
  "Toggle horizontal scroll bars on all frames (Horizontal Scroll Bar mode).

This command applies to all frames that exist and frames to be
created in the future."
  :init-value nil
  :global t
  :group 'frames
  (if (and horizontal-scroll-bar-mode
	   (not (horizontal-scroll-bars-available-p)))
      (progn
	(setq horizontal-scroll-bar-mode nil)
	(message "Horizontal scroll bars are not implemented on this system"))
    (dolist (frame (frame-list))
      (set-frame-parameter
       frame 'horizontal-scroll-bars horizontal-scroll-bar-mode))
    ;; Handle `default-frame-alist' entry.
    (setq default-frame-alist
	  (cons (cons 'horizontal-scroll-bars horizontal-scroll-bar-mode)
		(assq-delete-all 'horizontal-scroll-bars
				 default-frame-alist)))))