Multi RawKey Down Trigger

[newpie]

Hello, I was trying to figure out how to do a multi down trigger using non-function keys specifically.

So for example if a user does a certain sequence of keys ( example= "o+p+q" ) within a second or so on the keyboard itwould trigger the answer code. Tried the below, but doesn't compile

Code: Select all

on rawKeyDown theKeyNumber
         if the theKeyNumber is 111 and theKeyNumber is 112 and theKeyNumber is 113 then
            answer "trigger"
            end if
end rawKeyDown

Thank you for any help. Here is the theKeyNumber reference for windows.


a = theKeyNumber: 97
b = theKeyNumber: 98
c = theKeyNumber: 99
d = theKeyNumber: 100
e = theKeyNumber: 101
f = theKeyNumber: 102
g = theKeyNumber: 103
h = theKeyNumber: 104
i = theKeyNumber: 105
j = theKeyNumber: 106
k = theKeyNumber: 107
l = theKeyNumber: 108
m = theKeyNumber: 109
n = theKeyNumber: 110
o = theKeyNumber: 111
p = theKeyNumber: 112
q = theKeyNumber: 113
r = theKeyNumber: 114
s = theKeyNumber: 115
t = theKeyNumber: 116
u = theKeyNumber: 117
v = theKeyNumber: 118
w = theKeyNumber: 119
x = theKeyNumber: 120
y = theKeyNumber: 121
z = theKeyNumber: 122

[bn]

Hi NewPie,

So for example if a user does a certain sequence of keys ( example= "o+p+q" ) within a second or so on the keyboard itwould trigger the answer code

that is a tricky one.

I came up with this solution

put this code into a field

Code: Select all

local sTriggerCode = "111,112,113" -- you could add to this or change this, see below for timing
local sStartMS = ""
local sCode = ""

on rawKeyUp pKey
   if not (pKey is among the items of sTriggerCode) then
      put "" into sCode
      put "" into sStartMS
      pass rawKeyUp
   end if
   if pKey is item 1 of sTriggerCode and sStartMS = "" then
      put the milliseconds into sStartMS
      put pKey & comma into item 1 of sCode
      pass rawKeyUp
   end if
   put itemOffset(pKey,sTriggerCode) into tOffset
   if tOffset > 1 then
      if the milliseconds - sStartMS > 1000 then -- increase time if you want more than three letters to be tested
         put "" into sStartMS
         put "" into sCode
         pass rawKeyUp
      end if
      put the number of items of sCode into tTest
      if tOffset = tTest + 1 then
         put pKey & comma after sCode
         if the number of items of sCode = the number of items of sTriggerCode then
            put "" into sStartMS
            put "" into sCode
            answer "you got it"
            pass rawKeyUp
         end if
         pass rawKeyUp
      else
         put "" into sStartMS
         put "" into sCode
         pass rawkeyUp
      end if
   else
      put "" into sStartMS
      put "" into sCode
      pass rawkeyUp
   end if
end rawKeyUp

in my limited test it did work if you are fast enough (up to 1000 milliseconds), you can add to the passcode but you would have to increase the time allowed for a hit.

Kind regards
Bernd

[newpie]

Thats great, works like a charm. Thank you for taking the time and -- comments as well.

[dunbarx]

Is this too simple? In the card script:

Code: Select all

global keyList

on keyDown tKey
   put tKey after keyList
   if the length of keyList >= 3 then
      answer "You pressed:" && keyList
      put "" into keyList
   end if
end keyDown

[newpie]

Hey dunbarx. Does your code let you specify the keys to be pressed and only fire when those keys are pressed within so much time (ex: second)?

[newpie]

So I finally got to test bn coding with a scanner. It works when you do it on keyboard, but I guess the scanners are too fast and it doesn't pick it up. I am sure that code can be useful to some coders in the future though for various things. Any ideas for scanner please let me know. The scanner I have cannot do function buttons like Alt, ctrl, ect..

Thanks

[dunbarx]

Hi.

EDITED...
Make a field on a new card. Put this in the card script:

Code: Select all

global keyList,lastStart

on keyDown tKey
   if  keyList = "" then put the ticks into lastStart
    put tKey after keyList
   switch 
      case the ticks -lastStart  > 120
         put "" into keyList
         break
      case the length of keyList < 3
         put the ticks into lastStart
         break
      case the length of keyList >= 3
         put "You pressed:" && keyList into fld 1
         put "" into keyList
         break
   end switch
   put the ticks into lastStart
end keyDown

If you press three keys in succession, all within a two seconds, you will get an answer. If you delay, you get a restart. This can be made more robust; I do not like to have things so dependent on other things. But it was late...

Craig

[bn]

Hi Newpie,

but I guess the scanners are too fast and it doesn't pick it up

are you sure the scanner sends "pure" rawkeys and not some additional stuff?

Could you explain your use case a bit more?

The codes should be fast enough (I guess)

Kind regards
Bernd

[newpie]

Hey bn, sorry for the late reply, I tested with another barcode scanner and it works great. Wanted to let you know. Thank you everyone for your help.

[bn]

Hey newpie,

thanks for letting us know. It is always nice to hear of the ultimate outcome of a problem.

Kind regards
Bernd