Delphi XE2获取汉字拼音首字母

function CnPYIndex(const CnString: string): string;
{
  返回中文的拼音首字母
}
const
  ChinaCode: array[0..25, 0..1] of Integer = ((1601, 1636), (1637, 1832), (1833, 2077),
    (2078, 2273), (2274, 2301), (2302, 2432), (2433, 2593), (2594, 2786), (9999, 0000),
    (2787, 3105), (3106, 3211), (3212, 3471), (3472, 3634), (3635, 3722), (3723, 3729),
    (3730, 3857), (3858, 4026), (4027, 4085), (4086, 4389), (4390, 4557), (9999, 0000),
    (9999, 0000), (4558, 4683), (4684, 4924), (4925, 5248), (5249, 5589));
var
  i, j, HzOrd, l_iHz: Integer;
  Hz: AnsiString;
begin
  i :=  1;
  l_iHz :=1;
  while i <= Length(CnString) do
  begin
    Hz := CnString[i];
    if (Hz[l_iHz] >= #160) and (Hz[l_iHz +1] >= #160) then
    begin
      HzOrd := (Ord(Hz[l_iHz]) -160) *100+ Ord(Hz[l_iHz +1]) -160;
      for j :=0to25do
      begin
        if (HzOrd >= ChinaCode[j][0]) and (HzOrd <= ChinaCode[j][1]) then
        begin
          Result := Result + Char(Byte('A') + j);//改A为a就全部是小写
          Break;
        end;
      end;
    end
    else
      Result := Result + CnString[i];
    Inc(i);
  end;
end;

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