Getting functions into define-key...

Getting functions into define-key...

[Norman Walsh]

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I'm guessing there must be some way to do this other than brute force.

I have an alist:

(defvar my-alist
  '(("choice1" . "opt1")
    ("choice2" . 35)
    ("choice3" . "opt3")))

I want to make a menu-bar menu that contains choice1, choice2, choice3.
If choice1 is selected, I want to evaluate (my-function "opt1"),
If choice2 is selected, I want to evaluate (my-function 35), etc.

I can see a brute-force solution:

(defun my-function-opt1 ()
  (interactive)
  (my-function "opt1"))

(define-key menu-bar-my-menu [my-choice1]
  '("choice1" . my-function-opt1))

But it seems to me that it should be possible to build the menu bar
from the alist. Alas, it's just beyond my elisp skills.

Clues, please?

                                        Be seeing you,
                                          norm

- -- 
Norman Walsh <ndw@nwalsh.com> | Design and programming are human
http://nwalsh.com/            | activities; forget that and all is
                              | lost.--B. Stroustrup
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Re: Getting functions into define-key...

[Kevin Rodgers]

Norman Walsh wrote:

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> Hash: SHA1
> 
> I'm guessing there must be some way to do this other than brute force.
> 
> I have an alist:
> 
> (defvar my-alist
>   '(("choice1" . "opt1")
>     ("choice2" . 35)
>     ("choice3" . "opt3")))
> 
> I want to make a menu-bar menu that contains choice1, choice2, choice3.
> If choice1 is selected, I want to evaluate (my-function "opt1"),
> If choice2 is selected, I want to evaluate (my-function 35), etc.
> 
> I can see a brute-force solution:
> 
> (defun my-function-opt1 ()
>   (interactive)
>   (my-function "opt1"))
> 
> (define-key menu-bar-my-menu [my-choice1]
>   '("choice1" . my-function-opt1))
> 
> But it seems to me that it should be possible to build the menu bar
> from the alist. Alas, it's just beyond my elisp skills.

Here's how to handle ("choice1" . "opt1"):

(define-key menu-bar-my-menu [my-choice1]
   '("choice1" . (lambda () (interactive) (my-function "opt1"))))

So given my-alist:

(let ((alist my-alist)
       choice
       option)
   (while alist
     (setq choice (car (car alist))	; string
	  option (cadr (car alist)))	; constant (self-evaluating)
     (define-key menu-bar-my-menu (vector (intern choice))
       `(,choice . (lambda () (interactive) (my-function ,option))))
     (setq alist (cdr alist))))

-- 
Kevin Rodgers