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keyboard_keypressed(3)	      Svgalib User Manual	keyboard_keypressed(3)

NAME
       keyboard_keypressed  -  check  if a key is pressed when in raw keyboard
       mode

SYNOPSIS
       #include	<vgakeyboard.h>

       int keyboard_keypressed(int scancode);

DESCRIPTION
       When in raw keyboard mode this routine checks if	the key	with  scancode
       is pressed and returns KEY_PRESSED or KEY_NOTPRESSED accordingly. Actu-
       ally KEY_PRESSED	is 1 and KEY_NOTPRESSED	is 0, s.t. you	can  use  con-
       structs like:

       if(keyboard_keypressed(SCANCODE_ENTER)) {
	    /* do something */
       }

       Please  note that keyboard events will only be processed	when you occa-
       sionally	call keyboard_update(3)	or keyboard_waitforupdate(3).

       keyboard_translatekeys(3) allows	certain	remap  operations  which  make
       certain	keys  (digits,	enter)	which might have several physical keys
       show up under the same scancodes.

       Here are	the supported scancodes. The names of the  #defines  originate
       from  the US keyboard layout, for other countries, they'll refer	to the
       key in the same physical	location, but the keycap will have a different
       inscription. For	the list below,	add SCANCODE_ in front of the names to
       get the right name for your C source. That means, if it lists BACKSLASH
       below,  you  shall use SCANCODE_BACKSLASH as symbol in your program. In
       addition	to the names below we also have	SCANCODE_0 - SCANCODE_9, SCAN-
       CODE_KEYPAD0  -	SCANCODE_KEYPAD9,  SCANCODE_A  - SCANCODE_Z, and SCAN-
       CODE_F1 - SCANCODE_F12.

       The  other  key	names  are  ESCAPE,  MINUS,  EQUAL,  BACKSPACE,	  TAB,
       BRACKET_LEFT, BRACKET_RIGHT, ENTER, LEFTCONTROL,	SEMICOLON, APOSTROPHE,
       GRAVE, LEFTSHIFT, BACKSLASH, COMMA, PERIOD, SLASH, RIGHTSHIFT,  KEYPAD-
       MULTIPLY,  LEFTALT, SPACE, CAPSLOCK, NUMLOCK, SCROLLLOCK, CURSORUPLEFT,
       CURSORUP, CURSORUPRIGHT,	KEYPADMINUS, CURSORLEFT, CURSORRIGHT,  KEYPAD-
       PLUS,  CURSORDOWNLEFT, CURSORDOWN, CURSORDOWNRIGHT, KEYPADPERIOD, LESS,
       KEYPADENTER, RIGHTCONTROL, CONTROL,  KEYPADDIVIDE,  PRINTSCREEN,	 RIGH-
       TALT,  BREAK,  BREAK_ALTERNATIVE,  HOME,	CURSORBLOCKUP, PAGEUP, CURSOR-
       BLOCKLEFT, CURSORBLOCKRIGHT, END,  CURSORBLOCKDOWN,  PAGEDOWN,  INSERT,
       and REMOVE.

SEE ALSO
       svgalib(7),  vgagl(7), libvga.config(5),	keytest(6), eventtest(6), key-
       board_seteventhandler(3), keyboard_init(3), keyboard_init_return_fd(3),
       keyboard_close(3),   keyboard_setdefaulteventhandler(3),	 keyboard_key-
       pressed(3),  keyboard_clearstate(3),  keyboard_translatekeys(3),	  key-
       board_update(3),	keyboard_waitforupdate(3), vga_waitevent(3)

AUTHOR
       This  manual page was edited by Michael Weller <eowmob@exp-math.uni-es-
       sen.de>.	The exact source of the	referenced function as well as of  the
       original	documentation is unknown.

       It is very likely that both are at least	to some	extent are due to Harm
       Hanemaayer <H.Hanemaayer@inter.nl.net>.

       Occasionally this might be wrong. I hereby asked	to be excused  by  the
       original	author and will	happily	accept any additions or	corrections to
       this first version of the svgalib manual.

Svgalib	(>= 1.2.11)		 29 July 1997		keyboard_keypressed(3)

NAME | SYNOPSIS | DESCRIPTION | SEE ALSO | AUTHOR

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