1PACKFILE_VTABLE(3)              Allegro manual              PACKFILE_VTABLE(3)
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NAME

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

10       #include <allegro.h>
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13       typedef struct PACKFILE_VTABLE
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DESCRIPTION

16          int pf_fclose(void *userdata);
17          int pf_getc(void *userdata);
18          int pf_ungetc(int c, void *userdata);
19          long pf_fread(void *p, long n, void *userdata);
20          int pf_putc(int c, void *userdata);
21          long pf_fwrite(const void *p, long n, void *userdata);
22          int pf_fseek(void *userdata, int offset);
23          int pf_feof(void *userdata);
24          int pf_ferror(void *userdata);
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26       This is the vtable which must be provided for custom  packfiles,  which
27       then  can  read  from and write to wherever you like (eg. files in mem‐
28       ory). You should provide all the entries of the vtable,  even  if  they
29       are empty stubs doing nothing, to avoid Allegro (or you) calling a NULL
30       method at some point.
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SEE ALSO

34       pack_fopen_vtable(3), expackf(3)
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38Allegro                          version 4.4.3              PACKFILE_VTABLE(3)
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