lazreport调用fr3格式的方法

近日使用时发现lazreport自带调用fr3的功能，按下面的方法调用就可以：
1、uses 添加fr3tolrf
2、form添加frreport
3、使用LoadFastReport3调用fr3文件

LoadFastReport3(frReport控件名称,fr3格式的文件,返回相应信息);

unit Unit1;

{$mode objfpc}{$H+}

interface

uses
  Classes, SysUtils, DB, Forms, Controls, Graphics, Dialogs, StdCtrls, fr3tolrf,
  LR_Class, LR_Desgn, LR_BarC, LR_DSet, lr_barcodes2d;

type

  { TForm1 }

  TForm1 = class(TForm)
    Button1: TButton;
    Button2: TButton;
    Edit1: TEdit;
    frBarCode2d1: TfrBarCode2d;
    frBarCodeObject1: TfrBarCodeObject;
    frDesigner1: TfrDesigner;
    frReport1: TfrReport;
    frUserDataset1: TfrUserDataset;
    Memo1: TMemo;
    OpenDialog1: TOpenDialog;
    procedure Button1Click(Sender: TObject);
    procedure Button2Click(Sender: TObject);
  private

  public

  end;

var
  Form1: TForm1;

implementation

{$R *.lfm}

{ TForm1 }

procedure TForm1.Button1Click(Sender: TObject);
var Messages:string;
begin
  LoadFastReport3(frReport1,edit1.Text,Messages);
  frReport1.DesignReport;
  memo1.Text:=Messages;
end;

procedure TForm1.Button2Click(Sender: TObject);
begin
  if OpenDialog1.Execute then edit1.Text:=OpenDialog1.FileName;
end;

end.