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NAME

       PACKFILE_VTABLE  -  Packfile  vtable  structure,  for custom packfiles.
       Allegro game programming library.

SYNOPSIS

       #include <allegro.h>

       typedef struct PACKFILE_VTABLE

DESCRIPTION

          int pf_fclose(void *userdata);
          int pf_getc(void *userdata);
          int pf_ungetc(int c, void *userdata);
          long pf_fread(void *p, long n, void *userdata);
          int pf_putc(int c, void *userdata);
          long pf_fwrite(const void *p, long n, void *userdata);
          int pf_fseek(void *userdata, int offset);
          int pf_feof(void *userdata);
          int pf_ferror(void *userdata);

       This is the vtable which must be provided for custom  packfiles,  which
       then  can  read  from  and  write  to  wherever  you like (eg. files in
       memory). You should provide all the entries of the vtable, even if they
       are empty stubs doing nothing, to avoid Allegro (or you) calling a NULL
       method at some point.

SEE ALSO

       pack_fopen_vtable(3alleg), expackf(3alleg)