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Small boys teaching me LiveCode
Posted: Fri Oct 08, 2021 5:19 pm
by richmond62
Indeed . . .
I got this via Viber today from an 11 year old:
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Which "threw me off" quite a bit as I
ALWAYS (in my EFL programs) use a Tick image for end users to check a field's contents.
I had never used the
RETURN key, and had never worked out how to.
SO . . . to the much-maligned built-in
Dictionary and found
on ReturnInField, which, was, frankly, like being handed the keys to
the Holy Kingdom on a plate:
Code: Select all
on returnInField
if fld "ff" contains "black" then
set the vis of img "YES" to true
set the vis of img "NO" to false
else
set the vis of img "YES" to false
set the vis of img "NO" to true
end if
if fld "ff" is empty then
set the vis of img "YES" to false
set the vis of img "NO" to false
end if
end returnInField
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Re: Small boys teaching me LiveCode
Posted: Fri Oct 08, 2021 5:21 pm
by richmond62
Re: Small boys teaching me LiveCode
Posted: Sat Oct 09, 2021 9:39 am
by richmond62
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Personally I tend to use a 'Tick' button rather than
returnInField.
Re: Small boys teaching me LiveCode
Posted: Sat Oct 09, 2021 4:26 pm
by richmond62
I wonder if it is possible to differentiate between the ENTER and the RETURN keys?
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Of course one could differentiate by using rawKey codes:
ENTER: 65421
RETURN: 65293
BUT that misses the point somewhat.
The Dictionary offers enterKey, and enterInField.
Hitting the ENTER key in a field yields a CR (carriage return) character unless one traps for it specifically.
Code: Select all
on enterInField
if fld "ff" contains "black" then
set the vis of img "YES" to true
set the vis of img "NO" to false
else
set the vis of img "YES" to false
set the vis of img "NO" to true
end if
if fld "ff" is empty then
set the vis of img "YES" to false
set the vis of img "NO" to false
end if
end enterInField
Re: Small boys teaching me LiveCode
Posted: Sun Oct 10, 2021 5:25 pm
by jacque
The Dictionary offers enterKey, and enterInField.
And also returnKey and returnInField. The easiest way to differentiate is to use both return and enter variants in the script.
Re: Small boys teaching me LiveCode
Posted: Sun Oct 10, 2021 6:00 pm
by Klaus
ELSE also covers ->
if fld "ff" = empty
Code: Select all
on enterInField
if fld "ff" contains "black" then
set the vis of img "YES" to true
set the vis of img "NO" to false
else
set the vis of img "YES" to false
set the vis of img "NO" to true
end if
end enterInField
Re: Small boys teaching me LiveCode
Posted: Sun Oct 10, 2021 6:03 pm
by richmond62
ELSE also covers -> if fld "ff" = empty
If you read my code more carefully you'll see that a word that is not 'black' gives
the 'No' image, while an empty field gives no image at all.
Re: Small boys teaching me LiveCode
Posted: Sun Oct 10, 2021 6:16 pm
by Klaus
Sorry, I bow my head in shame!
Re: Small boys teaching me LiveCode
Posted: Sun Oct 10, 2021 6:20 pm
by richmond62
Sit opposite your teacher, learn everything he knows,
then kill him and take his place.