al_lock_index_buffer(3)                                al_lock_index_buffer(3)

NAME
       al_lock_index_buffer - Allegro 5 API

SYNOPSIS

              #include <allegro5/allegro_primitives.h>

              void* al_lock_index_buffer(ALLEGRO_INDEX_BUFFER* buffer, int offset,
                  int length, int flags)


DESCRIPTION
       Locks a index buffer so you can access its data.  Will return NULL if
       the parameters are invalid, if reading is requested from a write only
       buffer and if the buffer is already locked.

       Parameters:

       o buffer - Index buffer to lock

       o offset - Element index of the start of the locked range

       o length - How many indices to lock

       o flags - ALLEGRO_LOCK_READONLY, ALLEGRO_LOCK_WRITEONLY or
         ALLEGRO_LOCK_READWRITE

SINCE
       5.1.8

SEE ALSO
       ALLEGRO_INDEX_BUFFER(3), al_unlock_index_buffer(3)

Allegro reference manual                               al_lock_index_buffer(3)