TCharacter.IsHighSurrogate
Check whether a Unicode character is a surrogate in the high range
Declaration
Source position: character.pas line 104
public
class function IsHighSurrogate(AChar: UnicodeChar) : Boolean; Overload
; Static;
class function IsHighSurrogate(const AString: UnicodeString;
AIndex: Integer) : Boolean; Overload
; Static;
Description
IsHighSurrogate returns True if a Unicode character has category ucSurrogate and is in the high range of the surrogate characters (between HIGH_SURROGATE_BEGIN and HIGH_SURROGATE_END). The character can be specified as a UTF16 character AChar or a UTF16 encoded character starting at position AIndex in string AString.
Errors
If AIndex is not a valid character index in the string AString, an EArgumentOutOfRangeException exception is raised. If the character at that position is not complete, an EArgumentException exception is raised.
See also
Name | Description |
---|---|
EArgumentException | Invalid argument passed to a function |
IsControl | Check whether a Unicode character is a Unicode control character |
IsDigit | Check whether a Unicode character is a digit |
IsLetter | Check if a Unicode character is a letter. |
IsLetterOrDigit | Check if a Unicode character is a letter or digit |
IsLower | Check if a Unicode character is a lowercase letter |
IsLowSurrogate | Check whether a Unicode character is a surrogate in the low range |
IsNumber | Check if a Unicode character is a number |
IsPunctuation | Check if a Unicode character is a punctuation character |
IsSurrogate | Check whether a Unicode character is a surrogate |
IsSymbol | Check if a Unicode character is a symbol character |
IsUpper | Check whether a Unicode character is an uppercase letter |
IsWhiteSpace | Check whether a Unicode character is a whitespace character |