Delphi中取得汉字的首字母

function Tdm.GetHzPy(const AHzStr: string): string;
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: integer;
//    Hz: string[2];
begin
    i :=1;
    while i <= Length(AHzStr) do
    begin
        if (AHzStr[i] >= #160) and (AHzStr[i +1] >= #160) then
        begin
            HzOrd := (Ord(AHzStr[i]) -160) *100+ Ord(AHzStr[i +1]) -160;
            for j :=0 to 25do
            begin
                if (HzOrd >= ChinaCode[j][0]) and (HzOrd <= ChinaCode[j][1]) then
                begin
                    Result := Result +char(byte('A') + j);
                    break;
                end;
            end;
            Inc(i);
        end else Result := Result + AHzStr[i];
        Inc(i);
    end;
end;