Small boys teaching me LiveCode

[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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[richmond62]

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[richmond62]

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Personally I tend to use a 'Tick' button rather than returnInField.

[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

[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.

[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

[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.

[Klaus]

Sorry, I bow my head in shame!

[richmond62]

Sit opposite your teacher, learn everything he knows,
then kill him and take his place.