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    UnicodeIsHighSurrogate

    Check if a UTF16 character is the high character in a surrogate pair.

    Declaration

    Source position: unicodedata.pas line 493

    function UnicodeIsHighSurrogate(const AValue: UnicodeChar) : Boolean;

    Arguments

    Name Description
    AValue UTF16 character to check.

    Function result

    True if AValue forms the high character of a surrogate pair.

    Description

    UnicodeIsHighSurrogate checks whether AValue is a valid high character of a surrogate pair, and returns True if this is the case. It does this by checking whether the values are within the bounds for high characters in surrogate pairs.

    See also

    Name Description
    FromUCS4 Convert UCS4 to UNicodeChar.
    ToUCS4 Encode unicode UTF16 surrogate pair to UCS4 character.
    UnicodeIsHighSurrogate Check if a UTF16 character is the high character in a surrogate pair.
    UnicodeIsLowSurrogate Check if a UTF16 character is the low character in a surrogate pair.
    UnicodeIsSurrogatePair Check if a pair of UTF16 encoded characters is a valid surrogate pair.