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From: av@woo.oulu.fi.oulu.fi (Ari Vaulo, LuTK/TOL)
Newsgroups: comp.sys.mac.hypercard
Subject: Re: fields script
Message-ID: <1990Oct29.163858.6086@ousrvr.oulu.fi>
Date: 29 Oct 90 16:38:58 GMT
References: <1990Oct29.002315.3491@sics.se>
Sender: news@ousrvr.oulu.fi
Organization: University of Oulu, Finland
Lines: 36

From article <1990Oct29.002315.3491@sics.se>, by ollef@sics.se (Olle Furberg):
> In <485@caslon.cs.arizona.edu> musa@cs.arizona.edu (Musa J. Jafar) writes:
> 
>   OK here we go, note that there probably a lot of errors in the scripts
> below, but the main ideas are (hopefully) right.
> 
>>Till now I can not find a reason why we need  field scripts.
>>I would like some one to give me an example if possible?
> 
>  A simple, but very common usage of fld scripts: If a user selects/clicks on 
> a word in the field, the script could do something to give some information
> to the user about that word. In HC 2.0 this hypertext capability is extended
> by "Hot Text" and "Group text style". In this way you could put the following
> script into the fld: 
> 

Another way to use field scripts is format and error control. For example
if you have a field with money or date information, following little
scripts may be useful.

on closeField
   set numberFormat to "0.00"
   add 0 to me
end closeField

on closeField
   convert me to short date
end closeField

Other useful or necessary message handlers for field scripts are
returnInField, enterInField, tabKey. 

Ari Vaulo ---------------------------------------- eMail: av@tolsun.oulu.fi
University of Oulu --------------------------------------------------------
Department of Information Processing Science ------------------------------
Finland --------------------------------------------- voice: +358-81-352647