Adrian Williams wrote:
> Hi Jacqueline,
>
> I realise now the selectedChunk is certainly the wrong way to go!
Well, now that you've explained more about it, I think you actually do
have to use this.
It looks like you want to add intermediate characters between the ones
the user types, except at the beginning of words. You use a space as the
word delimiter in your example, but I think you'd have to handle line
beginnings too. For simplicity, let's just check for spaces and carriage
returns.
In a field, you'd put a script something like this:
on keydown pkey
put the selectedChunk into tChunk
put word 2 of tChunk - 1 into tPrevCharNum -- a number
put char tPrevCharNum of me into tPrevChar -- this is a character
if tPrevChar <> space and tPrevChar <> cr and tPrevCharNum <> 0 then
-- not a word start
put joinChar(tPrevChar) into tKeys -- calls a function
end if
put pkey after tKeys -- adds the user-typed entry to tKeys variable
do "put tKeys into" && tChunk
end keydown
function joinChar pChar
return "~"
end joinChar
This catches keystrokes, calculates the previous character position, and
checks that character to make sure it isn't the first character in the
field, a space, or a carriage return. If the criteria are met, it calls
a function that returns the join character. In my example, that's just a
tilde. You'd have to write the guts of the function, which you would
base on the value of the parameter "pChar" which is passed to the
function. The tilde is inserted into a variable, and then user's
keystroke is added to it. The two characters are then placed into the
field using the "do" construct, which is necessary here in order to
evaluate the variable "tChunk" when using it in a command. (Don't ask.)
That said, when you start using unicode, some of this will break. The
text chunking capabilities in Rev are one of its strongest points, but
they break down somewhat when using unicode. I'm a bit weak in that area
myself, so hopefully someone here can join in and suggest how to alter
the above to account for the additional bytes that unicode requires. I
think you have to add/subtract 2 rather than 1 for all the calculations,
but I haven't tried it.
Maybe this will at least get you started on how to calculate text chunks
and how to call a function.
--
Jacqueline Landman Gay | [EMAIL PROTECTED]
HyperActive Software | http://www.hyperactivesw.com
_______________________________________________
use-revolution mailing list
use-revolution@lists.runrev.com
Please visit this url to subscribe, unsubscribe and manage your subscription
preferences:
http://lists.runrev.com/mailman/listinfo/use-revolution
