how to make a selection box for input parameters?

how to make a selection box for input parameters?

[szhu]

Hi, I'd like to write a command that takes one parameter, which comes from
a pre-defined list such as ("red","blue","yellow",etc.) Is there an easy interface to let the
user pick, e.g. use the up-down arrow key? (sort of like a drop-down selection box.)

Thanks.

Shunhui

Re: how to make a selection box for input parameters?

[Kevin Rodgers]

szhu@SonicWALL.com wrote:

> Hi, I'd like to write a command that takes one parameter, which comes from
> a pre-defined list such as ("red","blue","yellow",etc.) Is there an easy interface to let the
> user pick, e.g. use the up-down arrow key? (sort of like a drop-down selection box.)

Read the Completion nodes in the Emacs manual (under Minibuffer) and in the

Emacs Lisp manual (under Minibuffers), then try out this example:

(defun foo-bar (bar)
   "Do foo to BAR."
   (interactive (list (completing-read "Bar: " '(("red") ("blue") ("yellow"))
				      nil t)))
   (foo bar))

-- 
<a href="mailto:&lt;kevin.rodgers&#64;ihs.com&gt;">Kevin Rodgers</a>