PACKFILE_VTABLE(3alleg4) Allegro manual PACKFILE_VTABLE(3alleg4)
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 mem-
ory). 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(3alleg4), expackf(3alleg4)
Allegro version 4.4.2 PACKFILE_VTABLE(3alleg4)
