keyboard_translatekeys - modify scancode mappings in raw keyboard mode
void keyboard_translatekeys(int mask);
This function sets several flags which control how certain scancodes
are mapped. At startup a mask value of 0 is active.
mask must be a logical or of zero or more of the following #predefined
integers to turn the features listed on:
Translate the scancodes of the SCANCODE_CURSORBLOCK* keys to
those of the cursor keys on the number pad, s.t.
keyboard_getstate(3) and keyboard_keypressed(3) report a
keypress of the corresponding number pad cursor key and not the
one on the cursor block.
Translates the scancodes of diagonal cursor keys (keypad 7, 9,
1, 3) to presses of two of the ordinary up, down, left, right
keys. For example, instead of reporting a press of
SCANCODE_CURSORUPRIGHT keyboard_getstate(3) and
keyboard_keypressed(3) report a simultaneous press of
SCANCODE_CURSORUP and SCANCODE_CURSORRIGHT.
The scancode of the keypad enter key is mapped to that of the
ordinary enter key, s.t. keyboard_getstate(3) and
keyboard_keypressed(3) report a press of SCANCODE_ENTER
regardless if keypad enter or ordinary enter is pressed.
Pressing <Ctrl>-C does not raise a SIGINT. On contrary to the
other flags this has also effect when a user defined keyboard
event handler is used. Svgalib will always process <Alt>-F1 -
<Alt>-F10 and perform console switches accordingly.
The TRANSLATE_* options above do really do simple scancode
translations. For example, when TRANSLATE_KEYPADENTER is active and the
user presses both enter and keypad enter. Then, if he releases one of
them (say keypad enter), it’s release event will clear the common
keyboard state, s.t. no keypress is reported even though enter is
Similarly, if TRANSLATE_DIAGONAL is active, the user holds cursor
upleft (keypad 7) down and then presses and release cursor up (keypad
8), svgalib will only report a pressed cursor left but the simulated
cursor up will be lost. You can easily try this with the keytest(6)
demo to make the effect more clear to you.
svgalib(7), vgagl(7), libvga.config(5), keytest(6), eventtest(6),
keyboard_init_return_fd(3), keyboard_close(3), keyboard_update(3),
keyboard_getstate(3), keyboard_clearstate(3), keyboard_keypressed(3),
This manual page was edited by Michael Weller <email@example.com-
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
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.