ImagePro>Re: Can a IPBasic macro call a Macro made with the SDK?

[Stan Voynick <svoynick[at]selmar.com>]

Chris:

    I totally agree, and I do exactly that in 95% of my stuff (as I showed
in my example earlier in this thread.)  However, in the context of this
customer's requirements, it was a specific process to be automated, and we
(my client and I) agreed that we wanted the bulk of the process to be coded
in "C", but they wanted control over a small, very specifically defined part
of it - in this case it was the implementation of a certain mathematical
calculation in the middle of the process.  In that context, it seemed the
smoother implementation to call a macro from the "C" code.  
  
   I suppose I could have provided two plug-in functions, something like
"Process_Part_1" and "Process_Part_2", and require the user to write a macro
that would call "Part_1", then do their calculation, then require them to
call "Part_2" to finish the process, but it just seemed cleaner - again, in
this specific context - to do it with the macro call from C

   But I do agree with your assertion, and that's how I do it the vast
majority of the time.   I love AutoPro and the was it allows you to extend
ImagePro.  90% of the time when a client comes to me with the question
"well, can I do this {bizarre request} with it?", my answer ends up being,
"well, I can write you a macro..."

   - Stan -

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Chris Tully wrote:
> 
> Stan,
> 
> Keep in mind that the better approach to allowing a user to experiment with
> your code is to take the trouble to implement macro support.  At that point,
> they can write standard AutoPro macros, and call your module in exactly the
> same way they call any other module in IPP.
> 
> Chris Tully
> Senior Technical Services Engineer and Quality Assurance Analyst
> Media Cybernetics, Inc. "From Images to Answers"

> 
> -----Original Message-----
> From: Image-Pro Plus Users Email List
> Sent: Friday, November 16, 2001 12:20 PM
> To: Image-Pro Plus Users Email List
> Subject: ImagePro>Re: Can a IPBasic macro call a Macro made with the
> SDK?
> 
> Kevin Ryan wrote:
> >
> > Normally we don't recommend calling macros from C/C++ code. There's
> > no guarantee that the appropriate macro is available!
> 
> ... but there are occasionally cases where it might be useful.  I had coded
> an application in a plug-in, but I wanted to give my (relatively
> sophisticated) end-user some the ability to reprogram one particular part of
> the process, so at the appropriate place in my "C" code, I inserted a call
> to a pre-defined script file and macro name.  That kept most of the process
> in fast, efficient C-code, but still gave the user the flexibility to
> experiment and change the process in the desired way.
> 

 [ ... remainder snipped ... ]

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