suse man page for set_mouse_sprite_focus

set_mouse_sprite_focus(3alleg4)                                   Allegro manual                                   set_mouse_sprite_focus(3alleg4)

NAME
       set_mouse_sprite_focus - Sets the mouse sprite focus. Allegro game programming library.

SYNOPSIS
       #include <allegro.h>

       void set_mouse_sprite_focus(int x, int y);

DESCRIPTION
       The  mouse  focus is the bit of the pointer that represents the actual mouse position, ie. the (mouse_x, mouse_y) position. By default this
       is the top left corner of the arrow, but if you are using a different mouse pointer you might need to alter it.

SEE ALSO
       set_mouse_sprite(3alleg4), exmouse(3alleg4)

Allegro                                                            version 4.4.2                                   set_mouse_sprite_focus(3alleg4)