show_os_cursor - Low level function to display the operating system cursor. Allegro game programming

       In case you do not need Allegro's mouse cursor API, which automatically emulates a cursor in software  if
       no  other  cursor  is available, you can use this low level function to try to display or hide the system
       cursor directly. The cursor parameter takes the same values as select_mouse_cursor. This function is very
       similar to calling enable_hardware_cursor, select_mouse_cursor and show_mouse, but will  not  try  to  do
       anything if no system cursor is available.

       The  most common use for this function is to just call it once at the beginning of the program to tell it
       to display the system cursor inside the Allegro window. The return value can  be  used  to  see  if  this
       succeeded  or  not. On some systems (e.g. DirectX fullscreen) this is not supported and the function will
       always  fail,  and  in  other  cases  only  some  of  the  cursors  will  work,  or  in   the   case   of
       MOUSE_CURSOR_ALLEGRO, only certain bitmap sizes may be supported.

       You  never  should use show_os_cursor together with the function show_mouse and other functions affecting
       it (select_mouse_cursor, enable_hardware_cursor,  disable_hardware_cursor,  scare_mouse,  unscare_mouse).
       They implement the standard high level mouse API, and don't work together with this low level function.

       show_os_cursor  -  Low  level  function  to display the operating system cursor. Allegro game programming
       library.

       Returns 0 if a system cursor is being displayed after the function returns, or -1 otherwise.

show_mouse(3alleg4), set_mouse_cursor_bitmap(3alleg4), select_mouse_cursor(3alleg4)

Allegro                                           version 4.4.3                          show_os_cursor(3alleg4)

#include<allegro.h>intshow_os_cursor(intcursor);