Re: Calling C function in Ada

[john@assen.demon.co.uk.nospam (John McCabe)]

ebresie@usa.net wrote:

> I am currently working on trying to have access to some of the protocol
>and service functions which are part of C and I think I am having some
>problems.  I am still very new to using C functions in Ada..so it may
>just be a usage issue.
>
>How is the best way to handle the passing in of the char * type variabls
>and the char ** type variables?

Use Interfaces.C.Strings.chars_ptr and its associated operations for
char * stuff. You mention To_Ada, but you need to use function Value
to return a string, and function New_String to return a chars_ptr from
a string.

As for char **, I used an instantiation of Interfaces.C.Pointers.

Hope this helps.


Best Regards
John McCabe <john@assen.demon.co.uk>