How to start this project...

J. Landman Gay jacque at
Sun Oct 1 14:22:05 EDT 2006

Adrian Williams wrote:
> Martin,
> Thanks for your suggestion. It did not work for me - reporting:
> Type    Function: error in function handler
> Object    edtText
> Line    put Lookupchar(char beforecharpos of me) into newbeforechar
> Hint    Lookupchar

Martin was assuming you would write your own function "lookupchar" to do 
the actual work, but since you are new at this, the function is actually 
exactly what you are asking about.

> The object field is "edtText" but if I change me to edtText
> that throws up an error too.

To reference a field,  you'd need to add the object descriptor. That is, 
change "me" to "field 'edtText'". But "me" is okay, leave it that way as 
long as the script is in the field itself.

> To explain a little more why the cursor position is important...
> User entering text can be dealt with as keyDown.
> But if User goes back and inserts cursor in an existing word,
> I need to know what is either side so that those characters can
> be matched against a list and replaced if necessary.

Look up the "selectedChunk" term in the dictionary. This gives you the 
position of the insertion point, or the position of any selected text, 
in the format:

   char x to y of field "whatever"

If x is smaller than y, a range of characters is selected. If x is 
larger than y, the insertion point is blinking between two characters. 
Your script should check to see whether x is smaller than y.  If so, 
you've got a selection that spans characters, and x-1 would be the 
previous character, and y+1 would be the next one. If x is larger than 
y, the insertion point is between characters and x+1 would be the next 
character and y-1 would be the previous one.

Once you have determined whether you have a range of text or not, you 
can put extra text either in front of or after the selected chunk:

   put "abc" before char x of field "whatever" -- works for a range
   put "abc" after char y of field "whatever" -- works for a range

   put "abc" before char y of field "whatever" -- for non-range
   put "abc" after char x of field "whatever" -- for non-range

Jacqueline Landman Gay         |     jacque at
HyperActive Software           |

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