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From: Andreas Politz <politza@fh-trier.de>
To: help-gnu-emacs@gnu.org
Subject: Re: widget-create 'menu-choice
Date: Thu, 24 Sep 2009 19:31:41 +0200	[thread overview]
Message-ID: <87hbustfk2.fsf@fh-trier.de> (raw)
In-Reply-To: 86740.76919.qm@web111608.mail.gq1.yahoo.com

Mortimer Cladwell <mbcladwell@yahoo.com> writes:

> Hi,
>  
> I would like to dynamically populate a dropdown widget from a
> database.  the 'menu-choice widget looks like
>  
> (widget-create 'menu-choice
>         :tag "Select Host Species"
>         :value "unknown"
>                  :notify (lambda (widget &rest ignore)
>                            (setq host-species (widget-value
> widget)))
>     '(item "human")
>     '(item "rat")
>     '(item "mouse"))
> Suppose I can generate a list '( "human "rat" "mouse") from the
> database.  How to create
>  
>    '(item "human")
>     '(item "rat")
>     '(item "mouse")
>  
> on the fly?  The closest I can come is
>  
> (progn
>   (setq var '( "human" "rat" "mouse"))
> (mapcar '(lambda  (a)  `'(item ,a))  var)
> )
> Thanks
>  
> Mortimer

`apply' solves this problem.

(apply #'* 1 2 3 '(4 5))

-ap





  parent reply	other threads:[~2009-09-24 17:31 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-09-18 18:54 widget-create 'menu-choice Mortimer Cladwell
2009-09-22  2:28 ` Kevin Rodgers
2009-09-24 17:31 ` Andreas Politz [this message]
  -- strict thread matches above, loose matches on Subject: below --
2009-09-24 16:13 Mortimer Cladwell
2009-09-25  2:59 ` Kevin Rodgers
2009-09-26 21:52 Mortimer Cladwell

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