set_leds(3alleg4) [suse man page]

set_leds(3alleg4)                                                 Allegro manual                                                 set_leds(3alleg4)

NAME

       set_leds - Sets the state of the keyboard LED indicators. Allegro game programming library.

SYNOPSIS

       #include <allegro.h>

       void set_leds(int leds);

DESCRIPTION

       Overrides  the  state  of  the  keyboard  LED indicators. The parameter is a bitmask containing any of the values KB_SCROLOCK_FLAG, KB_NUM-
       LOCK_FLAG, and KB_CAPSLOCK_FLAG, or -1 to restore the default behavior. Example:

          /* Cycle led indicators. */
          set_leds(KB_SCROLOCK_FLAG);
          rest(1000);
          set_leds(KB_CAPSLOCK_FLAG);
          rest(1000);
          set_leds(KB_NUMLOCK_FLAG);
          rest(1000);
          set_leds(-1);

       Note that the led behaviour cannot be guaranteed on some platforms, some leds might not react, or none at all. Therefore you shouldn't rely
       only on them to communicate information to the user, just in case it doesn't get through.

SEE ALSO

       install_keyboard(3alleg4), key_led_flag(3alleg4)

Allegro                                                            version 4.4.2                                                 set_leds(3alleg4)

install_keyboard(3alleg4)					  Allegro manual					 install_keyboard(3alleg4)

NAME

       install_keyboard - Installs the Allegro keyboard interrupt handler.

SYNOPSIS

       #include <allegro.h>

       int install_keyboard();

DESCRIPTION

       Installs  the  Allegro keyboard interrupt handler. You must call this before using any of the keyboard input routines. Once you have set up
       the Allegro handler, you can no longer use operating system calls or C library functions to access the keyboard.

       Note that on some platforms the keyboard won't work unless you have set a graphics mode, even if this  function	returns  a  success  value
       before  calling set_gfx_mode. This can happen in environments with graphic windowed modes, since Allegro usually reads the keyboard through
       the graphical window (which appears after the set_gfx_mode call). Example:

	  allegro_init();
	  install_timer();
	  install_keyboard();
	  /* We are not 100% sure we can read the keyboard yet! */
	  if (set_gfx_mode(GFX_AUTODETECT, 640, 480, 0, 0) != 0)
	     abort_on_error("Couldn't set graphic mode!");

	  /* Now we are guaranteed to be able to read the keyboard. */
	  readkey();

RETURN VALUE

       Returns zero on success, or a negative number on failure (but you may decide not to check  the  return  value  as  this	function  is  very
       unlikely to fail).

SEE ALSO

       remove_keyboard(3alleg4),  poll_keyboard(3alleg4),  key(3alleg4),  keypressed(3alleg4), readkey(3alleg4), ureadkey(3alleg4), keyboard_call-
       back(3alleg4),	keyboard_ucallback(3alleg4),   keyboard_lowlevel_callback(3alleg4),   three_finger_flag(3alleg4),   key_led_flag(3alleg4),
       set_leds(3alleg4), set_keyboard_rate(3alleg4), set_gfx_mode(3alleg4)

Allegro 							   version 4.4.2					 install_keyboard(3alleg4)