Re: Backspace doesn't work in 4.1.0 programs?
- Posted by ChrisB (moderator) May 05, 2022
- 1841 views
Hi
Ok, there's a lot of guff in here, and most of it is plagerised from other programs, but this will read every key on the keyboard that you press, and return an integer
global object VOID --eu only --/* include graphics.e -- color names include dll.e include wildcard.e include misc.e include get.e include image.e --*/ without warning global constant EU_VERSION = 3, PLAT = platform() constant COLORS = 1, FGND = 1, BKGND = 2, -- box structure COORDS = 2, ROW = 1, COL = 2, SIZE = 3, HEIGHT = 1, WIDTH = 2, MINH = 4, MINW = 8, STYLE = 4, SHADOW = 5, HINT = 6, HINTCOLORS = 7, BUFFER = 8 global integer SGL, DBL, DHL, DVL, NONE, up, dn, left, right, ENTER, ESC, SP, pgup, pgdn, home, endd, insert, bksp, del, tab, F1, F2, F3, F4, F5, F6, F7, F8, F9, F10, F11, F12 global sequence Lines, Divider, Shadow global integer TL, HL, TR, VL, BL, BR global object ENV = "Windows" ESC = 27 global constant KEY_UP = {ESC, 91, 65}, KEY_DOWN = {ESC, 91, 66} tab = '\t' TL = 1 HL = 2 TR = 3 VL = 4 BL = 5 BR = 6 if platform() = LINUX then SGL = 1 DBL = 2 DHL = 3 DVL = 4 NONE = 5 -- border styles --key defines up = 259 dn = 258 left = 260 right = 261 ENTER = 10 ESC = 27 SP = 32 pgup = 339 pgdn = 338 home = 262 endd = 360 insert = 331 bksp = 263 del = 330 F1 = 265 F2 = 266 F3 = 267 F4 = 268 F5 = 269 F6 = 270 F7 = 271 F8 = 272 F9 = 273 F10 = 274 F11 = 275 F12 = 276 --these have been changed from the 'graphic' character set Lines = {{'+','-','+','|','+','+'}, -- single line borders {'+','-','+','|','+','+'}, -- double line borders {'+','-','+','|','+','+'}, -- double horizontal {'+','-','+','|','+','+'}, -- double vertical {' ',' ',' ',' ',' ',' '} } -- none Divider = {{'+','-','+'}, -- single style divider line {'+','-','+'}, {'+','-','+'}, -- double horizontal {'+','-','+'}, {' ',' ',' '}} Shadow = {' ',' ',' '} -- 3 different shadow backgrounds ENV = getenv("TERM") if sequence(ENV) and match(upper(ENV), "XTERM") = -10 then --set to -10 to ignore it for now --xterms seem to work differently - try Windows set Lines = {{218,196,191,179,192,217}, -- single line borders {201,205,187,186,200,188}, -- double line borders {213,205,184,179,212,190}, -- double horizontal {214,196,183,186,211,189}, -- double vertical {' ',' ',' ',' ',' ',' '}} -- none Divider = {{195,196,180}, -- single style divider line {204,205,185}, {198,205,181}, -- double horizontal {199,196,182}, {' ',' ',' '}} Shadow = {176,177,178} -- 3 different shadow backgrounds end if else SGL = 1 DBL = 2 DHL = 3 DVL = 4 NONE = 5 -- border styles --key defines wim32 / dos up = 328 dn = 336 left = 331 right = 333 ENTER = 13 ESC = 27 SP = 32 pgup = 329 pgdn = 337 home = 327 endd = 335 insert = 338 bksp = 8 del = 339 F1 = 315 F12 = 316 F3 = 317 F4 = 318 F5 = 319 F6 = 320 F7 = 321 F8 = 322 F9 = 323 F10 = 324 F11 = 325 F12 = 326 --redefining for windows version up = 1016400 dn = 1016432 left = 1016384 right = 1016416 pgup = 1016320 pgdn = 1016336 --have to work out codes for lines -- Lines = {{'?,'?,'¿','³','?,'?}, -- single line borders -- {'?,'?,'»','º','?,'¼'}, -- double line borders -- {'?,'?,'¸','³','?,'¾'}, -- double horizontal -- {'?,'?,'·','º','?,'½'}, -- double vertical -- {' ',' ',' ',' ',' ',' '}} -- none -- -- Divider = {{'?,'?,'´'}, -- single style divider line -- {'?,'?,'¹'}, -- {'?,'?,'µ'}, -- double horizontal -- {'?,'?,'¶'}, -- {' ',' ',' '}} -- -- Shadow = {'°','±','²'} -- 3 different shadow backgrounds Lines = {{218,196,191,179,192,217}, -- single line borders {201,205,187,186,200,188}, -- double line borders {213,205,184,179,212,190}, -- double horizontal {214,196,183,186,211,189}, -- double vertical {' ',' ',' ',' ',' ',' '}} -- none Divider = {{195,196,180}, -- single style divider line {204,205,185}, {198,205,181}, -- double horizontal {199,196,182}, {' ',' ',' '}} Shadow = {176,177,178} -- 3 different shadow backgrounds end if global atom SCREEN_BKGND SCREEN_BKGND = BLACK global atom LIST_KEY LIST_KEY = 0 global integer LISTBOXINDEX_INITIAL_FLAG --flag to set searching for first letter in list LISTBOXINDEX_INITIAL_FLAG = 0 --doesn't always respond to this --hence flag global integer INSERT_MODE --can set insert mode on and off from outside FDialogs INSERT_MODE = 0 global sequence DefaultBox DefaultBox = {{BRIGHT_WHITE,BLUE}, -- default colors {1,1}, -- coordinates top left corner {5,10}, -- box size SGL, -- single line border 1, -- light shadow "Press any key...", -- hint text {GREEN,BLACK}, -- hint colors {}} -- buffer for save screen --to accomodate usage in xterm or konsole that hasn't been set to 25 lines --if you know it has, then set it to 25, to appear at bottom of screen global integer SCREEN_LINES, SCREEN_COLS SCREEN_LINES = 24 SCREEN_COLS = 80 global sequence vid_conf integer TRUE = 1, FALSE = 0 sequence HIGHLIGHT_COLORS = {BRIGHT_GREEN, BRIGHT_MAGENTA, BRIGHT_WHITE, BRIGHT_BLUE, BRIGHT_CYAN, BRIGHT_RED, YELLOW} sequence LOWLIGHT_COLORS = {GREEN, MAGENTA, WHITE, BLUE, CYAN, RED, BROWN} global integer BKGRND_HIGHLIGHT_SWITCH = 1, WITH_SHADOW = FALSE --sets whether a box should have a shadow or not --------------------------------------------------------------------------------------------------------------------- vid_conf = video_config() SCREEN_LINES = vid_conf[VC_LINES] SCREEN_COLS = vid_conf[VC_COLUMNS] --------------------------------------------------------------------------------------------------------------------- global function resolve_queue(sequence kq) --------------------------------------------------------------------------------------------------------------------- if match(kq, {27,79,70}) then return endd end if if match(kq, {27,79,72}) then return home end if for i = 1 to length(kq) do if kq[1] = ESC then if kq[2] = -1 then return ESC elsif kq[2] = 79 then if kq[3] = 0 then return home elsif kq[3] = 101 then return endd elsif kq[3] = 80 then return F1 elsif kq[3] = 81 then return F1 + 1 elsif kq[3] = 82 then return F1 + 2 elsif kq[3] = 83 then return F1 + 3 end if elsif kq[2] = 91 then if kq[3] >= 65 and kq[3] <= 68 then if kq[3] = 65 then return up elsif kq[3] = 66 then return dn elsif kq[3] = 67 then return right else return left end if elsif kq[3] = 49 then if kq[4] = 126 then return home end if elsif kq[3] = 50 then if kq[4] = 126 then return insert end if elsif kq[3] = 51 then return del elsif kq[3] = 52 then return endd elsif kq[3] = 53 then return pgup elsif kq[3] = 54 then return pgdn else return F1 + kq[3] - 49 end if end if end if end for return -1 end function --------------------------------------------------------------------------------------------------------------------- global function wait_key_nn() --new non ncurses wait_key replacement for eu 3 --returns a single character, like versions previous to eu25t3 --will also return a single character with versions prior to eu25t3 --note lot of scrounging from ed.ex, RDS --------------------------------------------------------------------------------------------------------------------- atom key sequence kq object characters kq = {} --wait for the first key - less computing time! key = wait_key() --pre eu 3.0 compatability if EU_VERSION < 3 or PLAT = WIN32 then return key end if kq = {key} --now get the rest of the keys while 1 do key = get_key() if key = -1 then exit end if kq &= key end while --thats filled the sequence, now process it if length(kq) = 1 then if kq[1] = 127 then kq[1] = bksp end if return kq[1] end if --puts(1, "Key pressed") --for i = 1 to length(kq) do -- printf(1, "%d,", {kq[i]}) --end for key = resolve_queue(kq) return key end function --------------------------------------------------------------------------------------------------------------------- global function get_key_nn(object c) --replaces original get_key function for n0 ncurses eu version --this won't work if there are too many key presses too quickly, better to use a match --------------------------------------------------------------------------------------------------------------------- atom key sequence kq if EU_VERSION < 3 or PLAT = WIN32 then return c end if kq = {c} --the first element --now get the rest of the keys while 1 do key = get_key() if key = -1 then exit end if kq &= key end while --thats filled the sequence, now process it if length(kq) = 1 then if kq[1] = 127 then kq[1] = bksp end if return kq[1] end if --puts(1, "Key pressed") --for i = 1 to length(kq) do -- printf(1, "%d,", {kq[i]}) --end for key = resolve_queue(kq) return key end function integer c /* object k while 1 do k = wait_key() printf(1, ": %d\n", {k}) end while */ while 1 do c = wait_key_nn() printf(1, " - Returned key : %d\n", {c}) end while
It's from a heavily modded dialog.ex, for a menu system, which actually looks quite nice on windows
Cheers
Chris
