keyboard_clearstate(3) [osf1 man page]

keyboard_clearstate(3)						Svgalib User Manual					    keyboard_clearstate(3)

NAME

       keyboard_clearstate - reset the state of all keys when in raw keyboard mode

SYNOPSIS

       #include <vgakeyboard.h>

       void keyboard_clearstate(void);

DESCRIPTION

       When  in  raw  keyboard	mode,  svgalib receives press and release events from the kernel and keeps track which keys are currently pressed.
       Calling keyboard_clearstate() sets this information to all keys released. You can use this for cleanup at certain places in  your  program.
       In  addition  svgalib  resets  the  states  of  all keys when a VC switch occurs because it does not know the current state of keys when it
       regains control of the console.

SEE ALSO

       svgalib(7),    vgagl(7),    libvga.config(5),	keytest(6),    eventtest(6),	keyboard_seteventhandler(3),	keyboard_init(3),     key-
       board_init_return_fd(3),   keyboard_close(3),   keyboard_setdefaulteventhandler(3),   keyboard_getstate(3),   keyboard_keypressed(3),  key-
       board_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.

Svgalib (>;= 1.2.11)						   29 July 1997 					    keyboard_clearstate(3)

keyboard_init(3)						Svgalib User Manual						  keyboard_init(3)

NAME

       keyboard_init, keyboard_init_return_fd - initialize the keyboard to raw mode

SYNOPSIS

       #include <vgakeyboard.h>

       int keyboard_init(void);
       int keyboard_init_return_fd(void);

DESCRIPTION

       These  routines	initialize  the  keyboard to raw mode. No ASCII codes are produced, instead svgalib keeps track of each single keypress or
       depress.  The return_fd version returns the file descriptor of the console device to allow you to do further tricks with it (though  it	is
       unclear which).	The other version just returns 0 if successful.  Both return -1 on error.

       keyboard_close(3) returns to normal operation.

       When  in  raw  keyboard	mode  you  can	no longer use vga_getch(3) or vga_getkey(3) but you must use keyboard_getstate(3) or keyboard_key-
       pressed(3).

       Depending on the setting of keyboard_translatekeys(3) even in raw mode a <Ctrl>-C will cause a SIGINT.  In any case svgalib will check  for
       <Alt>-F1 - <Alt>-F10 and perform console switches accordingly.

SEE ALSO

       svgalib(7),  vgagl(7), libvga.config(5), keytest(6), eventtest(6), keyboard_seteventhandler(3), keyboard_close(3), keyboard_update(3), key-
       board_waitforupdate(3), keyboard_setdefaulteventhandler(3), keyboard_getstate(3), keyboard_clearstate(3),  keyboard_translatekeys(3),  key-
       board_keypressed(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.

Svgalib (>;= 1.2.11)						   27 July 1997 						  keyboard_init(3)