Arabic letter become empty glyph in QT Embedded Libaray

[Tony Siu]

Dear All,

I am trying to localize my product using QT library 3.2.1. When I
try to use QTextEdit to display
،؛؟ءآأؤإئابةتثجحخدذرزسشصضطظعغـفكلمنهوىي
, which is unicode the valid letters in the sequential order of u060c
- u064a, many of the letters just simpily becomes empty glypy (empty
boxes). I used the arabic true type font found in MS windows XP Arabic
Transparent, artro.ttf.

I don't know arabic at all and just was asked to implement Arabic
functionality. Does this circumstance means that the QT system isn't
yet capable of displaying all QT? How can you solve this problem so
that it can display the above text properly?

Thanks a lot,

Tony