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Quick Code Question
Posted: Mon Mar 02, 2026 4:46 am
by isabellspivey
Hello,
How can I stop the application from proceeding until a field contains a minimum number of characters? I’m at the end of a kiosk workflow where patients swipe their cards, and I need the script to remain idle until the required data has been entered.
Re: Quick Code Question
Posted: Mon Mar 02, 2026 7:55 am
by Emily-Elizabeth
Code: Select all
on KeyUp
CharCheck
pass KeyUp
end KeyUp
on DeleteKey
CharCheck
pass DeleteKey
end DeleteKey
on BackspaceKey
CharCheck
pass BackspaceKey
end BackspaceKey
private command CharCheck
set the enabled of button "OK" to (the number of characters of me >= 3)
end CharCheck
Re: Quick Code Question
Posted: Fri Apr 24, 2026 10:59 am
by charleshallock
Hello, don’t try to “pause” LiveCode—it will freeze the UI. Instead, validate and only proceed when the field is long enough.
Simplest approach:
Code: Select all
on returnInField
if the number of chars of me < 6 then
answer "Enter at least 6 characters."
exit returnInField
end if
go to card "NextScreen"
end returnInField
Or validate while typing:
Code: Select all
on keyUp
if the number of chars of me >= 6 then
go to card "NextScreen"
end if
end keyUp
Don’t block execution—control when you advance.
Re: Quick Code Question
Posted: Fri Apr 24, 2026 2:53 pm
by dunbarx
Many ways to do this, as you have already seen. I like, in the script of the offending field:
Code: Select all
on textchanged
if the length of me >= 6 then doYourThing
end textchanged
Craig