Encode unicode UTF16 surrogate pair to UCS4 character.
Source position: unicodedata.pas line 488
| function ToUCS4( | 
| const AHighS: UnicodeChar; | 
| const ALowS: UnicodeChar | 
| ):UCS4Char; | 
| AHighS | 
 | High character of surrogate pair. | 
| ALowS | 
 | Low character of surrogate pair. | 
UCS4 encoded unicode character.
ToUCS4 converts set of unicode (surrogate pair) characters encoded in UTF16: AHighS, ALowS to a UCS4 encoded unicode character.
| 
 | Convert UCS4 to UNicodeChar. | |
| 
 | Check if a UTF16 character is the high character in a surrogate pair. | |
| 
 | Check if a UTF16 character is the low character in a surrogate pair. | |
| 
 | Check if a pair of UTF16 encoded characters is a valid surrogate pair. |