From: Nitin Kapoor (firstname.lastname@example.org)
Date: Wed Aug 18 2004 - 00:41:59 CDT
Thanks for your response, so what you are suggesting is that the Unicode
does not change but only the display glyph should change right.
Currently, the implementation I am following is that once the user types in
a particular key say: 0x0622 , I look for the joining type of the character
and then on the basis of the joining type of the character and its neighbors
I look up the Display form of the current character in Presentation form B
and then I ask my Display Module to display the glyph matching to this
Presentation form (Unicode).
If I donˇ¦t use the Unicode values of Arabic presentation form B then how
will my display know which particular glyph to display? using the Unicode
values of presentation form B makes this easier but then the original
I am sorry but I am a bit confused with what to display and what Unicode to
store, your comments would be really help full.
Thanks & Regards,
>From: "Chris Jacobs" <email@example.com>
>To: <firstname.lastname@example.org>, "Nitin Kapoor" <email@example.com>
>Subject: Re: Arabic Implementation
>Date: Wed, 18 Aug 2004 04:44:09 +0200
>----- Original Message -----
>From: "Nitin Kapoor" <firstname.lastname@example.org>
>Sent: Wednesday, August 18, 2004 3:38 AM
>Subject: Arabic Implementation
> > Hello Friends,
> > I am implementing ARABIC in one of our embedded projects .I have read
> > Unicode standard well and would like to ask a question about joining
> > After a character changes the display form into one mentioned in Arabic
> > Presentation Form B does it still belong to a joining type.
> > For example: Lets say Unicode Character : 0x0622 which is a right
> > type , when this changes the display form into ISOLATED FORM its Unicode
> > becomes : 0xfe81.
>NO. When 0x0622 changes its display form into ISOLATED FORM because of
>context it still stays 0x0622.
>Only the glyph changes, not the underlying char.
> > So does 0xfe81 also belong to Right Joining type?
>If it is really a 0xfe81 char, encoded as such, then no.
> > I am asking this question
> > because according to Derived Joining Type .txt provided by UNICODE, it
> > doesnˇ¦t have any category for characters once they change their display
> > form.
> > I personally feel that a particular character belonging to a particular
> > joining type will have all its different display forms also belonging to
> > particular joining type .
>Which is indeed what happpens if you avoid using the presentation form code
>points, as you should.
> > Please advice me if I am on the right track.
> > Thanks
> > Nitin
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