Thanks a lot for the different answer to my original posting.

I found the post of ara.t.how... / noaa.gov quite interesting, because it
shows a very straight forward way of interfacing with c-functionality.

On the the side being able to support multiple scripting language at
once is a compelling outlook, too.

Can someone elaborate on the portability (linux, win32, etc.) of a SWIG
solution and possible performance issue, that might be connect with
SWIG?

And still, I am searching someone who can help me in getting a
prototype starting... maybe it would just be sufficient to wrap two or
three c-api calls so that I get a feeling for how to do it myself.

Feurio