does this PNG have transparency?

Bob Sneidar bobsneidar at iotecdigital.com
Mon Jan 27 10:53:17 EST 2020


Phil, 

Is img "my test" an existing image, or does setting the filename of img "my test" create the image on the fly? I'm trying to turn this into a function that returns true or false. 

Bob S


> On Jan 24, 2020, at 14:35 , Phil Davis via use-livecode <use-livecode at lists.runrev.com> wrote:
> 
> Maybe this? It seems to work in my simple testing. Am I missing something?
> 
> on mouseUp
>     answer file "Pick an image:"
>     if it is empty then exit to top
>     set the filename of img "my test" to it
> 
>     put numtochar(0) into tZero
>     put (tZero is in the alphaData of img "my test") OR (tZero is in the maskData of img "my test")
> end mouseUp
> 
> Phil





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