Using Behaviors for Triggering UI Design - Run Time

[Mark Wieder]

On 03/30/2016 01:07 PM, Sannyasin Brahmanathaswami wrote:

> I tested this:
>
> 1) create script only stack with this script (this works if run from a button on the card and a direct reference to the field name)
>
>   command centerTextVertically
>    put the formattedheight of me into tTotalTextHeight
>    put ( the height of me - tTotalTextHeight ) / 2 into tTopBottomMargins
> end centerTextVertically
>
> 2) save that script only stack as "sv_field-behaviors.livecodescript"
>
> 3) go to a field --> set behavior --> choose stack --> I see that stack "sv_field-behaviors" available.
>
> 4) set the behavior of the field to that stack
>
> First Puzzle:
>
> In the message box I run
> "centerTextVertically"
> Nothing happens: the text in the field doesn't move (should get a new top margin)
> Why not?

I think of behavior scripts as private backscripts. So in your case 
you're setting the behavior of a field, but then you're going to the 
message box to try invoking a handler in a behavior script, and that 
handler can't be seen from anywhere except your field. Try

send "centerTextVertically" to field <nameOfField>

another way to do this would be to also set the behavior of the message 
box field to the same behavior script, but that way lies madness.

-- 
  Mark Wieder
  ahsoftware at gmail.com