Re: Gimp 2.4.1 and Script-Fu: set variable gives "unbound variable"

andreaswaechter a écrit :
> My script starts with the following code:
> 
> (define (script-fu-scale-in-steps-to-screen image drawable)
> 
> ;get original size of image
> 	(set! actwidth (car (gimp-image-width image)))
> 	(set! actheight (car (gimp-image-height image)))
> 
> 	(set! ratio 1.05)
> 
> When I try to run it in Gimp 2.4.1, it gives the error 
> 
> Error while executing (script-fu-scale-in-steps-to-screen 1 2)
> Error: set!: unbound variable actwidth
>

With the new scheme interpreter used in Gimp 2.4, the *first time* a 
variable is set, "define" must be used instead of "set!". If not, this 
variable is unknown. Once a variable has been defined "set!" can be used.

Regards,

-- 
JLH


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