procedure TForm3.FormCreate(Sender: TObject);
type
  AnsiStringForPage = type AnsiString(950);//代码页
var
  AnsiStr: AnsiStringForPage;
  i: Integer;

  function GetAnsiCharCode(Value: AnsiChar): string;
  begin
    Result := IntToHex(ord(Value), 2);
  end;

begin
  AnsiStr := 'abcABC中国人';//ansi兼容abcAbc，所以这些字母对应的值与代码页无关，而中国人，在950中人存在，国不存，所以长度为11，936时长度12，932也是长度11
  for i := 0 to Length(AnsiStr) do
    Memo1.Lines.Add(IntToHex(ord(AnsiStr[i]), 2));

procedure _LStrLAsg(var Dest: _AnsiStr; const Source: _AnsiStr);//字符串复制
{$IFDEF PUREPASCAL}
var
  P: Pointer;
begin
  P := Pointer(Source);
  if P <> nil then
    _LStrAddRef(P);
  P := Pointer(Dest);
  Pointer(Dest) := Pointer(Source);
  _LStrClr(P);//清空字符串
end;
{$ELSE}
asm
        { ->    EAX     pointer to dest }
        {       EDX     source          }

        TEST    EDX,EDX
        JE      @@sourceDone