Supporting Arabic in GUI

[pascal111]

I have no idea about GUI or Rad programming in D; it's not its 
time, but I'm curious to know if D is fine supporting for Arabic 
language in the GUI applications or we will have some issues like 
I met - in my experience - in Free Pascal.

This is a topic where we trying to make a custom message box 
supporting Arabic as what's supposed to be, but we didn't reach 
although that the degree we want:

https://forum.lazarus.freepascal.org/index.php/topic,59765.0.html