RAD Studio VCL Reference
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Character.IsLetter Function

Determines whether a UTF-16 character is defined as a letter in the Unicode specifications.

Pascal
function IsLetter(C: Char): Boolean; overload;
function IsLetter(const S: string; Index: Integer): Boolean; overload;
C++
Boolean IsLetter(Char C);
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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