Are we talking the same thing here?
For example, the old C qsort definition was something like
void qsort(void *v, int left, in right, int (*comp)(void *, void *))
where comp() is the user's function for comparing items of whatever
type are in array v.
As I recall some newer FORTRAN compilers can handle this, but to the best of my knowledge VB does not. I tried it in VB for a site index calculator. I got nowhere and found no references to being able to do it in any of the documentation or online information. (Please tell me I missed something!)
Greg or Jeff - how do you see using callbacks in a growth model?