Field listener

Jim Ault JimAultWins at
Sun Sep 10 14:16:55 EDT 2006

Now that I have time for a more detailed answer, the key lies in how you use
the 'closefield' handler of the text entry field.

It is possible to :
on closefield 
   if me is empty then
       set a flag 'IamEmpty' to true
      set the Submit button to diabled state

---or simpler for the programmer
--less user friendly
on SubmitButton
   if fld textEntry is empty then
      set me to diaabled state
      answer "Nothing to submit"
      do the submit tasks
   end if 

Jim Ault
Las Vegas

On 9/10/06 9:17 AM, "Trevor Hopkins" <tjhopkins224 at> wrote:

> I'm trying to build a form whose "submit" button only becomes enabled after
> text is present in a specific field (and likewise when that field is blank,
> the "submit" button returns to disabled status). Does anyone know of a
> painless way to do this? I'd also like the user to be able to hit return
> from within that field and have the "submit" button entered. Right now, it
> seems, the return key must be hit twice in order to first exit the field and
> then select "submit".
> Many thanks,
> Trevor Hopkins
> Exeter, UK
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