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keyboard_translatekeys(3) Svgalib User Manual keyboard_translatekeys(3) NAME keyboard_translatekeys - modify scancode mappings in raw keyboard mode SYNOPSIS #include <vgakeyboard.h> void keyboard_translatekeys(int mask); DESCRIPTION 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 in- tegers to turn the features listed on: TRANSLATE_CURSORKEYS 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. TRANSLATE_DIAGONAL 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 key- board_getstate(3) and keyboard_keypressed(3) report a simultaneous press of SCANCODE_CURSORUP and SCANCODE_CURSORRIGHT. TRANSLATE_KEYPADENTER The scancode of the keypad enter key is mapped to that of the ordi- nary enter key, s.t. keyboard_getstate(3) and keyboard_key- pressed(3) report a press of SCANCODE_ENTER regardless if keypad en- ter or ordinary enter is pressed. DONT_CATCH_CTRLC Pressing <Ctrl>-C does not raise a SIGINT. On contrary to the other flags this has also effect when a user defined keyboard event han- dler is used. Svgalib will always process <Alt>-F1 - <Alt>-F10 and perform console switches accordingly. BUGS 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 en- ter), it's release event will clear the common keyboard state, s.t. no keypress is reported even though enter is still pressed. 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. 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_update(3), keyboard_waitforupdate(3), key- board_setdefaulteventhandler(3), keyboard_getstate(3), key- board_clearstate(3), keyboard_keypressed(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 orig- inal 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_translatekeys(3)
NAME | SYNOPSIS | DESCRIPTION | BUGS | SEE ALSO | AUTHOR
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