Introduction
B4P has the unique capability to translate characters received with the functions getch() or input quick() into dedicated UNICODE
characters located in the Private Use Area B. This area is freely available for proprietary use and will not interfere with assignments
of new characters in the future. Every key pressed, e.g. a function or arrow key, will return a single character.
These characters ensure cross-platform compatibility.
See Special keyboard input characters.
Note: You may have considered Escape sequences (which date back to Digital Equipment VT100 terminals in the late 1970's , e.g.
ESC [A for a cursor key) but these symbols do typically contain multiple characters (up to seven of them) and B4P will not guarantee cross platform portability.
Function and Navigation Keys
Following table applies with function and arrow keys pressed alone.
| Key | UNICODE (hex) | Character Entity Name |
|---|---|---|
| Insert | 108000 | &insert; |
| End | 108001 | &end; |
| Arrow down | 108002 | &arrow-down; |
| Pg dn | 108003 | &pgdn; |
| Arrow left | 108004 | &arrow-left; |
| Center key (Keypad 5) | 108005 | ¢er; |
| Arrow right | 108006 | &arrow-right; |
| Home | 108007 | &home; |
| Arrow up | 108008 | &arrow-up; |
| Pg up | 108009 | &pgup; |
| Delete | 10800a | &delete; |
| F1 | 108011 | &f1; |
| F2 | 108012 | &f2; |
| F3 | 108013 | &f3; |
| F4 | 108014 | &f4; |
| F5 | 108015 | &f5; |
| F6 | 108016 | &f6; |
| F7 | 108017 | &f7; |
| F8 | 108018 | &f8; |
| F9 | 108019 | &f9; |
| F10 | 10801a | &f10; |
| F11 | 10801b | &f11; |
| F12 | 10801c | &f12; |
Control Key held down
Following table applies with function and arrow keys pressed while the control key is held down:
| Key | UNICODE (hex) | Character Entity Name |
|---|---|---|
| ctrl-Insert | 108100 | &ctrl-insert; |
| ctrl-End | 108101 | &ctrl-end; |
| ctrl-Arrow down | 108102 | &ctrl-arrow-down; |
| ctrl-Pg dn | 108103 | &ctrl-pgdn; |
| ctrl-Arrow left | 108104 | &ctrl-arrow-left; |
| ctrl-Center key (Keypad 5) | 108105 | &ctrl-center; |
| ctrl-Arrow right | 108106 | &ctrl-arrow-right; |
| ctrl-Home | 108107 | &ctrl-home; |
| ctrl-Arrow up | 108108 | &ctrl-arrow-up; |
| ctrl-Pg up | 108109 | &ctrl-pgup; |
| ctrl-Delete | 10810a | &ctrl-delete; |
| ctrl-F1 | 108111 | &ctrl-f1; |
| ctrl-F2 | 108112 | &ctrl-f2; |
| ctrl-F3 | 108113 | &ctrl-f3; |
| ctrl-F4 | 108114 | &ctrl-f4; |
| ctrl-F5 | 108115 | &ctrl-f5; |
| ctrl-F6 | 108116 | &ctrl-f6; |
| ctrl-F7 | 108117 | &ctrl-f7; |
| ctrl-F8 | 108118 | &ctrl-f8; |
| ctrl-F9 | 108119 | &ctrl-f9; |
| ctrl-F10 | 10811a | &ctrl-f10; |
| ctrl-F11 | 10811b | &ctrl-f11; |
| ctrl-F12 | 10811c | &ctrl-f12; |
Shift Key held down
Following table applies with function and arrow keys pressed while the shift key is held down:
| Key | UNICODE (hex) | Character Entity Name |
|---|---|---|
| shift-Insert | 108200 | &shift-insert; |
| shift-End | 108201 | &shift-end; |
| shift-Arrow down | 108202 | &shift-arrow-down; |
| shift-Pg dn | 108203 | &shift-pgdn; |
| shift-Arrow left | 108204 | &shift-arrow-left; |
| shift-Center key (Keypad 5) | 108205 | &shift-center; |
| shift-Arrow right | 108206 | &shift-arrow-right; |
| shift-Home | 108207 | &shift-home; |
| shift-Arrow up | 108208 | &shift-arrow-up; |
| shift-Pg up | 108209 | &shift-pgup; |
| shift-Delete | 10820a | &shift-delete; |
| shift-F1 | 108211 | &shift-f1; |
| shift-F2 | 108212 | &shift-f2; |
| shift-F3 | 108213 | &shift-f3; |
| shift-F4 | 108214 | &shift-f4; |
| shift-F5 | 108215 | &shift-f5; |
| shift-F6 | 108216 | &shift-f6; |
| shift-F7 | 108217 | &shift-f7; |
| shift-F8 | 108218 | &shift-f8; |
| shift-F9 | 108219 | &shift-f9; |
| shift-F10 | 10821a | &shift-f10; |
| shift-F11 | 10821b | &shift-f11; |
| shift-F12 | 10821c | &shift-f12; |
| shift-TAB | 108220 | &shift-tab; |
Ctrl and Shift Key held down
Following table applies with function and arrow keys pressed while the shift key is held down:
| Key | UNICODE (hex) | Character Entity Name |
|---|---|---|
| ctrl-shift-Insert | 108300 | &ctrl-shift-insert; |
| ctrl-shift-End | 108301 | &ctrl-shift-end; |
| ctrl-shift-Arrow down | 108302 | &ctrl-shift-arrow-down; |
| ctrl-shift-Pg dn | 108303 | &ctrl-shift-pgdn; |
| ctrl-shift-Arrow left | 108304 | &ctrl-shift-arrow-left; |
| ctrl-shift-Center key (Keypad 5) | 108305 | &ctrl-shift-center; |
| ctrl-shift-Arrow right | 108306 | &ctrl-shift-arrow-right; |
| ctrl-shift-Home | 108307 | &ctrl-shift-home; |
| ctrl-shift-Arrow up | 108308 | &ctrl-shift-arrow-up; |
| ctrl-shift-Pg up | 108309 | &ctrl-shift-pgup; |
| ctrl-shift-Delete | 10830a | &ctrl-shift-delete; |
| ctrl-shift-F1 | 108311 | &ctrl-shift-f1; |
| ctrl-shift-F2 | 108312 | &ctrl-shift-f2; |
| ctrl-shift-F3 | 108313 | &ctrl-shift-f3; |
| ctrl-shift-F4 | 108314 | &ctrl-shift-f4; |
| ctrl-shift-F5 | 108315 | &ctrl-shift-f5; |
| ctrl-shift-F6 | 108316 | &ctrl-shift-f6; |
| ctrl-shift-F7 | 108317 | &ctrl-shift-f7; |
| ctrl-shift-F8 | 108318 | &ctrl-shift-f8; |
| ctrl-shift-F9 | 108319 | &ctrl-shift-f9; |
| ctrl-shift-F10 | 10831a | &ctrl-shift-f10; |
| ctrl-shift-F11 | 10831b | &ctrl-shift-f11; |
| ctrl-shift-F12 | 10831c | &ctrl-shift-f12; |
ALT Key held down
Following table applies with function and arrow keys pressed while the ALT key is held down. The following character set assumes that the left-hand alt key is used. Note that some machines and operating system interprete the right-hand alt key differenty, e.g. for special characters such as the EURO symbol (€).
| Key | UNICODE (hex) | Character Entity Name |
|---|---|---|
| alt-Insert | 108400 | &alt-insert; |
| alt-End | 108401 | &alt-end; |
| alt-Arrow down | 108402 | &alt-arrow-down; |
| alt-Pg dn | 108403 | &alt-pgdn; |
| alt-Arrow left | 108404 | &alt-arrow-left; |
| alt-Center key (Keypad 5) | 108405 | &alt-center; |
| alt-Arrow right | 108406 | &alt-arrow-right; |
| alt-Home | 108407 | &alt-home; |
| alt-Arrow up | 108408 | &alt-arrow-up; |
| alt-Pg up | 108409 | &alt-pgup; |
| alt-Delete | 10840a | &alt-delete; |
| alt-F1 | 108411 | &alt-f1; |
| alt-F2 | 108412 | &alt-f2; |
| alt-F3 | 108413 | &alt-f3; |
| alt-F4 | 108414 | &alt-f4; |
| alt-F5 | 108415 | &alt-f5; |
| alt-F6 | 108416 | &alt-f6; |
| alt-F7 | 108417 | &alt-f7; |
| alt-F8 | 108418 | &alt-f8; |
| alt-F9 | 108419 | &alt-f9; |
| alt-F10 | 10841a | &alt-f10; |
| alt-F11 | 10841b | &alt-f11; |
| alt-F12 | 10841c | &alt-f12; |
Ctrl + ALT Keys held down
Following table applies with function and arrow keys pressed while both Ctrl and ALT keys are held down. Note that some machines and operating system interprete the right-hand alt key differenty, e.g. ctrl-alt-Delete to access the task manager or to resetart the machine.
| Key | UNICODE (hex) | Character Entity Name |
|---|---|---|
| ctrl-alt-Insert | 108500 | &ctrl-alt-insert; |
| ctrl-alt-End | 108501 | &ctrl-alt-end; |
| ctrl-alt-Arrow down | 108502 | &ctrl-alt-arrow-down; |
| ctrl-alt-Pg dn | 108503 | &ctrl-alt-pgdn; |
| ctrl-alt-Arrow left | 108504 | &ctrl-alt-arrow-left; |
| ctrl-alt-Center key (Keypad 5) | 108505 | &ctrl-alt-center; |
| ctrl-alt-Arrow right | 108506 | &ctrl-alt-arrow-right; |
| ctrl-alt-Home | 108507 | &ctrl-alt-home; |
| ctrl-alt-Arrow up | 108508 | &ctrl-alt-arrow-up; |
| ctrl-alt-Pg up | 108509 | &ctrl-alt-pgup; |
| ctrl-alt-Delete | 10850a | &ctrl-alt-delete; |
| ctrl-alt-F1 | 108511 | &ctrl-alt-f1; |
| ctrl-alt-F2 | 108512 | &ctrl-alt-f2; |
| ctrl-alt-F3 | 108513 | &ctrl-alt-f3; |
| ctrl-alt-F4 | 108514 | &ctrl-alt-f4; |
| ctrl-alt-F5 | 108515 | &ctrl-alt-f5; |
| ctrl-alt-F6 | 108516 | &ctrl-alt-f6; |
| ctrl-alt-F7 | 108517 | &ctrl-alt-f7; |
| ctrl-alt-F8 | 108518 | &ctrl-alt-f8; |
| ctrl-alt-F9 | 108519 | &ctrl-alt-f9; |
| ctrl-alt-F10 | 10851a | &ctrl-alt-f10; |
| ctrl-alt-F11 | 10851b | &ctrl-alt-f11; |
| ctrl-alt-F12 | 10851c | &ctrl-alt-f12; |
ALT + Shift Keys held down
Following table applies with function and arrow keys pressed while both ALT and Shift keys are held down. Note that some machines and operating system interprete the right-hand alt key differenty.
| Key | UNICODE (hex) | Character Entity Name |
|---|---|---|
| alt-shift-Insert | 108600 | &alt-shift-insert; |
| alt-shift-End | 108601 | &alt-shift-end; |
| alt-shift-Arrow down | 108602 | &alt-shift-arrow-down; |
| alt-shift-Pg dn | 108603 | &alt-shift-pgdn; |
| alt-shift-Arrow left | 108604 | &alt-shift-arrow-left; |
| alt-shift-Center key (Keypad 5) | 108605 | &alt-shift-center; |
| alt-shift-Arrow right | 108606 | &alt-shift-arrow-right; |
| alt-shift-Home | 108607 | &alt-shift-home; |
| alt-shift-Arrow up | 108608 | &alt-shift-arrow-up; |
| alt-shift-Pg up | 108609 | &alt-shift-pgup; |
| alt-shift-Delete | 10860a | &alt-shift-delete; |
| alt-shift-F1 | 108611 | &alt-shift-f1; |
| alt-shift-F2 | 108612 | &alt-shift-f2; |
| alt-shift-F3 | 108613 | &alt-shift-f3; |
| alt-shift-F4 | 108614 | &alt-shift-f4; |
| alt-shift-F5 | 108615 | &alt-shift-f5; |
| alt-shift-F6 | 108616 | &alt-shift-f6; |
| alt-shift-F7 | 108617 | &alt-shift-f7; |
| alt-shift-F8 | 108618 | &alt-shift-f8; |
| alt-shift-F9 | 108619 | &alt-shift-f9; |
| alt-shift-F10 | 10861a | &alt-shift-f10; |
| alt-shift-F11 | 10861b | &alt-shift-f11; |
| alt-shift-F12 | 10861c | &alt-shift-f12; |
Ctrl + ALT + Shift Keys held down
Following table applies with function and arrow keys pressed while both ALT and Shift keys are held down. Note that some machines and operating system interprete the right-hand alt key differenty.
| Key | UNICODE (hex) | Character Entity Name |
|---|---|---|
| ctrl-alt-shift-Insert | 108700 | &ctrl-alt-shift-insert; |
| ctrl-alt-shift-End | 108701 | &ctrl-alt-shift-end; |
| ctrl-alt-shift-Arrow down | 108702 | &ctrl-alt-shift-arrow-down; |
| ctrl-alt-shift-Pg dn | 108703 | &ctrl-alt-shift-pgdn; |
| ctrl-alt-shift-Arrow left | 108704 | &ctrl-alt-shift-arrow-left; |
| ctrl-alt-shift-Center key (Keypad 5) | 108705 | &ctrl-alt-shift-center; |
| ctrl-alt-shift-Arrow right | 108706 | &ctrl-alt-shift-arrow-right; |
| ctrl-alt-shift-Home | 108707 | &ctrl-alt-shift-home; |
| ctrl-alt-shift-Arrow up | 108708 | &ctrl-alt-shift-arrow-up; |
| ctrl-alt-shift-Pg up | 108709 | &ctrl-alt-shift-pgup; |
| ctrl-alt-shift-Delete | 10870a | &ctrl-alt-shift-delete; |
| ctrl-alt-shift-F1 | 108711 | &ctrl-alt-shift-f1; |
| ctrl-alt-shift-F2 | 108712 | &ctrl-alt-shift-f2; |
| ctrl-alt-shift-F3 | 108713 | &ctrl-alt-shift-f3; |
| ctrl-alt-shift-F4 | 108714 | &ctrl-alt-shift-f4; |
| ctrl-alt-shift-F5 | 108715 | &ctrl-alt-shift-f5; |
| ctrl-alt-shift-F6 | 108716 | &ctrl-alt-shift-f6; |
| ctrl-alt-shift-F7 | 108717 | &ctrl-alt-shift-f7; |
| ctrl-alt-shift-F8 | 108718 | &ctrl-alt-shift-f8; |
| ctrl-alt-shift-F9 | 108719 | &ctrl-alt-shift-f9; |
| ctrl-alt-shift-F10 | 10871a | &ctrl-alt-shift-f10; |
| ctrl-alt-shift-F11 | 10871b | &ctrl-alt-shift-f11; |
| ctrl-alt-shift-F12 | 10871c | &ctrl-alt-shift-f12; |