Delete Character In Field.

[Googie85]

Hi Guys, I have a quick question.

Let's say I have a field with the contents "Tester". If I was to generate the message "backspaceKey", how would I delete the "s" when the cursor is behind the "s"? Is there a way I can see the char number that the cursor is at so that I can delete the character that precedes the cursor?

I hope I explained myself clearly!!!

Many Thanks,

Googie.

[dunbarx]

Hi.

On a new card with a field 1 containing your text and a button, put this in the button script:

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on mouseUp
   if char (word 2 of the selectedChunk) of fld 1 = "s" then answer "You have an S!"
end mouseUp

If the cursor is blinking just behind an "s" you will get a dialog. I assume you can expand on this with your deletion thing.

Craig

[dunbarx]

I had an extra minute.

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on mouseUp
   get word 2 of the selectedChunk
   if char it of fld 1 = "s" then delete char it of fld 1
end mouseUp

Craig

[dunbarx]

Googie.

Just a question. Does "Googie" possibly derive from an old Theodore Sturgeon science fiction story?

Craig

[richmond62]

This is slightly off-topic, but what is the logic behind 'word 2'?

If I do this:

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on mouseUp
   put word 1 of the selectedChunk
end mouseUp

I get 'char'

and if I do this:

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on mouseUp
   put word 2 of the selectedChunk
end mouseUp

I get a number (the number of the letter just before the cursor in the field), and if
I do this:

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on mouseUp
   put word 3 of the selectedChunk
end mouseUp

I will always get 'to'.

[dunbarx]

Richmond.

I do not understand your question. Make a quick stack as I described but in the button script only retrieve the selectedChunk itself. Place the cursor somewhere in the text of the field and click the button .

See?

Craig

[Klaus]

OH BOY, Richmond...

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put the selectedchunk

Will surely enlighten you, if not, get another hobby.

[richmond62]

With the cursor between 2 letters (i.e. NO text is selected) I get nothing.

That still does not explain word 1, word 2, or word 3.

A single character before the cursor insertion point is not a word.

[Klaus]

Some hints...

Button script:

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put the selectedchunk

No text selected, cursor is blinking after the 2nd character in the field:

selectedchunk2.png (29.79 KiB) Viewed 11604 times

Some text selected:

selectedchunk1.png (26.01 KiB) Viewed 11604 times

[dunbarx]

Richmond.

With the cursor between 2 letters (i.e. NO text is selected) I get nothing.

I bet you do, if you really have a blinking cursor.

Anyway, it is not really true that "no text is selected", as you put it, though I understand your point. When the selectedChunk returns a value that has word 2 greater than word 4, it indicates just that case, a blinking cursor in the body of the text but with no actual character(s) selected.

One might say that the existence of the cursor within the text constitutes a selection, albeit a very narrow one.

Anyway, a blinking cursor is rightly considered to be a participant in the text, and the selectedChunk locates it with two "reverse" numbers, the chars after and before the cursor.

Craig

[jacque]

Richmond: we evaluate the string returned in the selectedChunk. The first four words of that string include the character positions. I'm not sure what you were expecting?