Unicode 检查字符串是否含中文字（函数）

// 字串含中文 by Aone
function IsIncludeChinese(Str: String): Boolean;
var i: Integer;
    UCS4Str: UCS4String;
begin
     Result := False;
     UCS4Str := UnicodeStringToUCS4String(Str);

     for i:=Low(UCS4Str) to High(UCS4Str) do
         if ((UCS4Str[i] >=  $3400) and (UCS4Str[i] <=  $4DB5)) or   // CJK Unified Ideographs Extension A 3.0
            ((UCS4Str[i] >=  $4E00) and (UCS4Str[i] <=  $9FA5)) or   // CJK Unified Ideographs 1.1
            ((UCS4Str[i] >=  $9FA6) and (UCS4Str[i] <=  $9FBB)) or   // CJK Unified Ideographs 4.1
            ((UCS4Str[i] >=  $F900) and (UCS4Str[i] <=  $FA2D)) or   // CJK Compatibility Ideographs 1.1
            ((UCS4Str[i] >=  $FA30) and (UCS4Str[i] <=  $FA6A)) or   // CJK Compatibility Ideographs 3.2
            ((UCS4Str[i] >=  $FA70) and (UCS4Str[i] <=  $FAD9)) or   // CJK Compatibility Ideographs 4.1
            ((UCS4Str[i] >= $20000) and (UCS4Str[i] <= $2A6D6)) or   // CJK Unified Ideographs Extension B 3.1
            ((UCS4Str[i] >= $2F800) and (UCS4Str[i] <= $2FA1D)) then // CJK Compatibility Supplement
            Exit(True);
end;