"disabling" a coloroverlay?

[Klaus major-k]

Hi Craig,

Am 23.09.2013 um 15:39 schrieb dunbarx at aol.com:

> Klaus.
> 
> Something not right, all right.

You bet!

> I made a new button "b3", and put this in a script somewhere:
> 
> on mouseUp
>   get the coloroverlay["color"] of btn "b3"
>    if it = "" then
>      answer "Yep, empty, all right" 
>   end if
> 
>   combine it with return --just to make sure it is an ordinary, not array, variable
>   if it = "" then
>      answer "Yep, empty, all right" 
>   end if
>    set the coloroverlay["color"] of btn "b3" to ""
> end mouseUp

I made abutton, set its coloroverlay color to RED and added this scriupt:
on mouseUp
   set the coloroverlay["color"] of me to ""
end mouseUp

-> Execution error! :-/

> The variable "it" is always empty, but the property cannot be set to empty. It is possible to set it, as you know, to anything else, inlcuding "0".

Setting it to 0 results in a WHITE overly?
Sorry, still clueless :-D

> Craig
> 
> 
> Hi friends,
> 
> see subject, how do I "switch off" of the coloroverlay["color"] 
> setting of a control?
> 
> -> set the  coloroverlay["color"] of btn XYZ to empty
> Gives an error..
> 
> Maybe set it ot 0? 
> Or will the 0 be interpreted as a "shortcut" for 0,0,0?
> 
> Any hints welcome, thanks :-)

Best

Klaus

--
Klaus Major
http://www.major-k.de
klaus at major-k.de