I'm trying to use the C callbacks available with GForth 0.7.9 but
somehow it doesn't seem to work.
I have a callback that takes two arguments and one return value.
I define it like this:
c-callback cs-renderer n a -- a
' render>buf cs-renderer CONSTANT c_render_to_buf
When passing c_render_to_buf to the function which requires the callback
the callback gets invoked but when it returns things go wrong.
If I place a .s in the callback it prints <-34288843> so it seems the
stack isn't set up properly. But I don't know what to do different to
make it work.
I've yet to create a complete example I can post.
--
René Hartmann
