i am working on a lisp to attach an image with
(command "-image" "attach" path "0,0" "1" "0") where 'path' is the prefix and image name set from a dialog box.
how can i get the program to error if the image does not exist- i.e., the name was incorrectly entered? i have tried
(if (= str "*Image not found*")
(alert ":: ERROR :: Image not found")
)
and
(if (/= str "*Image not found*")
(command "-image" "attach" path "0,0" "1" "0")
(alert ":: ERROR :: Image not found")
)
the alert comes up regardless of whether or not the image exists.