FastReport FR 报表 自定义函数 人民币大小写转换

控件版本是:
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FastReport 3.23.12 Enterpise for d2006 (DeXter)

设置如下:
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function TJzpzEdit1.MoneyCn(mmje: Double): string;
const
  s1: string = '零壹贰叁肆伍陆柒捌玖';
  s2: string = '分角元拾佰仟万拾佰仟亿拾佰仟万';

  function StrTran(const S, s1, s2: string): string;
  begin
    Result := StringReplace(S, s1, s2, [rfReplaceAll]);
  end;
var
  S, dx: string;
  i, Len: Integer;
begin
  if mmje < 0 then
  begin
    dx := '负';
    mmje := -mmje;
  end;
  S := Format('%.0f', [mmje * 100]);
  Len := Length(S);
  for i := 1 to Len do
    dx := dx + Copy(s1, (Ord(S[i]) - Ord('0')) * 2 + 1, 2) + Copy(s2, (Len - i)
      * 2 + 1, 2);
  dx := StrTran(StrTran(StrTran(StrTran(StrTran(dx, '零仟', '零'), '零佰',
    '零'),
    '零拾', '零'), '零角', '零'), '零分', '整');
  dx := StrTran(StrTran(StrTran(StrTran(StrTran(dx, '零零', '零'), '零零',
    '零'),
    '零亿', '亿'), '零万', '万'), '零元', '元');
  if dx = '整' then
    Result := '零元整'
  else
    Result := StrTran(StrTran(dx, '亿万', '亿零'), '零整', '整');
end;
//////////
procedure TJzpzEdit1.FormCreate(Sender: TObject);
begin
  frxReport1.AddFunction('function MoneyCn(mmje: Double): String;','Myfunction','小写金额转大写的函数');
end;
//////////
function TJzpzEdit1.frxReport1UserFunction(const MethodName: string;
  var Params: Variant): Variant;
begin
  if UpperCase(MethodName) = UpperCase('MoneyCn') then
    Result := MoneyCn(Params[0]);
end;
//////////
报表中调用方法
MoneyCn(50000000)