Hello,

Wanting to use the Jack API, and studying examples written in C, I meet some 
external "callback" functions that within their parameters have the reference 
to another function (this internal to the code).

Here an exemple of those external Jack API "callback" functions:

       jack_set_process_callback(client, process_callback, 0);

This function tells the Jack server to call process_callback whenever there is 
work be done, passing arg as the second argument.

Well, I'ld like to use this particular functions, but I do not know how I *have 
to declare* them when I use Extern:

     Private Extern  jack_set_process_callback(Pclient As Pointer, ...???.... 
As ....???..., Intarg As Integer)

In fact something like  "....As Function" is not possible.


Suggestions ?

Regards
vuottt

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