Due to Font limitation, we will use SurrogateFallback in registry to display all characters.
ex. Hanazono font :
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\LanguagePack\SurrogateFallback\HanaMinA]
“Plane1″=”HanaMinB”
“Plane2″=”HanaMinB”…
But if enable “DirectWrite”, SurrogateFallback will not works.
(Need to manually change font to “HanaMinB” to display Ext.B~F)
