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.  Actually  KEY_PRESSED  is  1   and
       KEY_NOTPRESSED is 0, s.t. you can use constructs like:

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

       Please  note  that  keyboard  events  will  only  be  processed when you occasionally 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,  SCANCODE_KEYPAD0  -  SCANCODE_KEYPAD9,
       SCANCODE_A - SCANCODE_Z, and SCANCODE_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,   KEYPADMULTIPLY,  LEFTALT,  SPACE,  CAPSLOCK,  NUMLOCK,  SCROLLLOCK,
       CURSORUPLEFT, CURSORUP, CURSORUPRIGHT, KEYPADMINUS, CURSORLEFT,  CURSORRIGHT,  KEYPADPLUS,
       CURSORDOWNLEFT,    CURSORDOWN,    CURSORDOWNRIGHT,    KEYPADPERIOD,   LESS,   KEYPADENTER,
       RIGHTCONTROL, CONTROL,  KEYPADDIVIDE,  PRINTSCREEN,  RIGHTALT,  BREAK,  BREAK_ALTERNATIVE,
       HOME,  CURSORBLOCKUP,  PAGEUP,  CURSORBLOCKLEFT,  CURSORBLOCKRIGHT,  END, CURSORBLOCKDOWN,
       PAGEDOWN, INSERT, and REMOVE.

SEE ALSO

       svgalib(7),       vgagl(7),       libvga.config(5),       keytest(6),        eventtest(6),
       keyboard_seteventhandler(3),         keyboard_init(3),         keyboard_init_return_fd(3),
       keyboard_close(3),       keyboard_setdefaulteventhandler(3),       keyboard_keypressed(3),
       keyboard_clearstate(3),           keyboard_translatekeys(3),           keyboard_update(3),
       keyboard_waitforupdate(3), vga_waitevent(3)

AUTHOR

       This manual page was edited by Michael Weller  <eowmob@exp-math.uni-essen.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.