Re: IFS Open

"Bartell, Aaron L. (TC)" wrote:
> 
> To go along with Scott and Joe's comments I am fairly certain you cannot
> use a VARYING field as a parm to a C API.  This is because the first two
> chars of the variable contain it's length and since C doesn't support
> RPG's version of VARYING length fields it thinks those first two bytes
> are part of the file path/name.
> 
> I may be wrong, but I struggled with this some time ago and I think that
> is what I came up with.
> 

Aaron, the rule about not using VARYING when calling a C API applies to
the prototype of the C function, which describes what the C function is
expecting.

(It's only a rule of thumb.  A C program can support RPG's varying
length if you want, but you would have to define your own C struct to
map to the type.)