OpenEuphoria

Re: call_back ?

• Posted by Mario Steel <eumario at tuscanchat.com> Jul 24, 2004
• 496 views

Juergen Luethje wrote:

>I think in Euphoria this would be a procedure rather than a function,
>wouldn't it?
>  
>
This is the correct way to do it.  If the function your calling requires 
no return, then use procedure.  That C/C++ Function would translate into 
this in Euphoria

procedure RasDialFunc(integer unMsg, atom rasconnstate, atom dwError)
    ... Your handling of the Data that is returned to you ....
end procedure
c_proc(xRasDialFunc,{call_back(routine_id("RasDialFunc"))})

This should work.  And I assume that rasconnstate is a C/C++ Structure, 
so you will need to know the structure, in order to properly get the 
information from it.

>In the Euphoria 2.4 documentation for define_c_func(), it reads:
>"If you are not interested in using the value returned by the C function,
>you should instead define it with define_c_proc() and call it with
>c_proc()."
>
>Does that work for you?
>
>Regards,
>   Juergen
>

Good Luck,
Mario