interfaces.C - Import struct

[Jean-Baptiste CAMPESATO <camje_lemon@nospam.a2lf.org>]

Hello;
In a C Header file i've got this struct :
    typedef struct {
        void (*driver_setpixel_func) (int, int, int);
        int (*driver_getpixel_func) (int, int);
        void (*driver_hline_func) (int, int, int, int);
        void (*driver_fillbox_func) (int, int, int, int, int);
        void (*driver_putbox_func) (int, int, int, int, void *, int);
        void (*driver_getbox_func) (int, int, int, int, void *, int);
        void (*driver_putboxmask_func) (int, int, int, int, void *);
        void (*driver_putboxpart_func) (int, int, int, int, int, int, void *,
                                        int, int);
        void (*driver_getboxpart_func) (int, int, int, int, int, int, void *,
                                        int, int);
        void (*driver_copybox_func) (int, int, int, int, int, int);
    } framebufferfunctions;

And with the package interfaces.C i wan't to import this structure as
"type framebufferfunctions is record" but i don't know the equivalent of a
pointer for a function in Ada, and if i must import all the possible
function.
And c2ada doesn't work under SlackwareLinux 10.1, Debian Sarge, Fedora2.
I've a lot of error when i compile.
Somebody can help please ? (use c2ada on vgagl.h or explicate me how
translat this struct)
Thanks