--- In qalam@yahoogroups.com, "Richard Wordingham"
<richard.wordingham@...> wrote:

> --- In qalam@yahoogroups.com, Marco Cimarosti

<marco.cimarosti@...>

> wrote:
> > suzmccarth wrote:
>
> > Hmmm... There's a bit of misunderstanding here.
>
> > Uniscribe has nothing to do with editing or typing. It is the
> module which
> > handles the *display* of text.
>
> <Snip>
> > On the other hand, the keyboard driver is a module which

interprets

> > keystrokes on the keyboard, convert them into character codes
> (e.g., "a") or
> > in function codes (e.g., DELETE) and sends them to the editing
> module. It
> > does not know nor need to know what the editing module will do
> with this
> > information.
>
> <Snip>
> > As Uniscribe module and the editing module run at the same time,
> the net
> > effect is that typing on the keyboard you see text changing on

the

> screen.
> > But, actually, there is no interaction between the two modules
> apart the
> > fact that they access the same text data in memory.
>
> This is not quite true. You're forgetting the mouse! Uniscribe
> will convert pixel positions to character positions (see
> http://msdn.microsoft.com/library/en-us/intl/uniscrib_4ka8.asp ),
> and if this documentation is correct, it may, seemingly at its own
> discretion, refuse to return a character position within
> a 'cluster', e.g. an 'akshara'. Semites seem more privileged than
> Indians - the former are allowed to click on vowel points in their
> native scripts.

Yes, I thought that the cursor placement was part of "editing". In
Microsoft Works, with an earlier Uniscribe version, the cursor can
be placed within the akshara. In Wordpad, which, on my computer,
runs a more recent Uniscribe version, the cursor can not be placed
within the akshara. However, the backspacing characterisics vary
greatly from one application to another (I have downloaded some
from different places). The downloaded applications seem to be
running off the more recent Uniscribe version according to cursor
behaviour as it cannot be placed within the akshara.

Anyhow, I can now compare different applications and see how
backspacing and cursor placement are independent.

Suzanne McCarthy