RAD Studio VCL Reference
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Determines whether a UTF-16 character is defined as a letter in the Unicode specifications.
class function IsLetter(C: Char): Boolean; overload; static; class function IsLetter(const S: string; Index: Integer): Boolean; overload; static;
static __fastcall Boolean IsLetter(Char C); static __fastcall Boolean IsLetter(const AnsiString S, int Index);
Returns true if the UTF-16 character is defined as a letter in the Unicode specifications.
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