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set_display_switch_callback(3)	Allegro	manual	set_display_switch_callback(3)

NAME
       set_display_switch_callback  -  Installs	a switching notification call-
       back. Allegro game programming library.

SYNOPSIS
       #include	<allegro.h>

       int set_display_switch_callback(int dir,	void (*cb)());

DESCRIPTION
       Installs	a notification callback	for the	switching mode that was	previ-
       ously  selected by calling set_display_switch_mode(). The direction pa-
       rameter can either be SWITCH_IN or SWITCH_OUT,  depending  whether  you
       want  to	 be  notified about switches away from your program or back to
       your program. You can sometimes install callbacks for  both  directions
       at the same time, but not every platform	supports this. You can install
       several switch callbacks, but no	more than eight	on any platform.

RETURN VALUE
       Returns zero on success,	decreasing the number of empty callback	 slots
       by  one.	 Returns -1 if the request is impossible for the current plat-
       form or you have	reached	the maximum number of allowed callbacks.

SEE ALSO
       remove_display_switch_callback(3),	   set_display_switch_mode(3),
       exswitch(3)

Allegro				 version 4.4.3	set_display_switch_callback(3)

NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | SEE ALSO

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