pack_fseek(3alleg4) [x11r4 man page]

pack_fseek(3alleg4)						  Allegro manual					       pack_fseek(3alleg4)

NAME

       pack_fseek - Seeks inside a stream. Allegro game programming library.

SYNOPSIS

       #include <allegro.h>

       int pack_fseek(PACKFILE *f, int offset);

DESCRIPTION

       Moves  the position indicator of the stream `f'. Unlike the standard fseek() function, this only supports forward movements relative to the
       current position and in read-only streams, so don't use negative offsets. Note that seeking is very slow when reading compressed files, and
       so should be avoided unless you are sure that the file is not compressed. Example:

	  input_file = pack_fopen("data.bin", "r");
	  if (!input_file)
	     abort_on_error("Couldn't open binary data!");
	  /* Skip some useless header before reading data. */
	  pack_fseek(input_file, 32);

RETURN VALUE

       Returns zero on success or a negative number on error, storing the error code in `errno'.

SEE ALSO

       pack_fopen(3alleg4), pack_fopen_chunk(3alleg4), expackf(3alleg4)

Allegro 							   version 4.4.2					       pack_fseek(3alleg4)

expackf(3alleg4)						  Allegro manual						  expackf(3alleg4)

NAME

       expackf - Using custom PACKFILE vtables. Allegro game programming library.

SYNOPSIS

       #include <allegro.h>

       Example expackf

DESCRIPTION

       This program demonstrates the use of the packfile functions, with some simple tests.

       The  first  test  uses  the  standard packfile functions to transfer a bitmap file into a block of memory, then reads the bitmap out of the
       block of memory, using a custom packfile vtable.

       The second test reads in a bitmap with another custom packfile vtable, which uses libc's file stream functions.

       The third test demonstrates seeking with a custom vtable.

       The fourth test reads two bitmaps, and dumps them back into a single file, using a custom vtable again.

       Tools

SEE ALSO

       ASSERT(3alleg4), BITMAP(3alleg4), END_OF_MAIN(3alleg4), PACKFILE(3alleg4), PACKFILE_VTABLE(3alleg4), SCREEN_H(3alleg4),	SCREEN_W(3alleg4),
       alert(3alleg4), allegro_error(3alleg4), allegro_init(3alleg4), allegro_message(3alleg4), blit(3alleg4), clear_bitmap(3alleg4), destroy_bit-
       map(3alleg4),  file_size_ex(3alleg4),  font(3alleg4),  install_keyboard(3alleg4),  key(3alleg4),  load_bmp_pf(3alleg4),	load_pcx(3alleg4),
       load_pcx_pf(3alleg4),  load_tga_pf(3alleg4),  pack_fclose(3alleg4),  pack_fopen(3alleg4),  pack_fopen_vtable(3alleg4), pack_fread(3alleg4),
       pack_fseek(3alleg4),   readkey(3alleg4),    save_bmp_pf(3alleg4),    save_tga_pf(3alleg4),    screen(3alleg4),	 set_color_depth(3alleg4),
       set_gfx_mode(3alleg4), text_height(3alleg4), textprintf_centre_ex(3alleg4), textprintf_ex(3alleg4)

Allegro 							   version 4.4.2						  expackf(3alleg4)