unit Unit1;

{$mode objfpc}{$H+}

interface

uses
  Classes, SysUtils, LResources, Forms, Controls, Graphics, Dialogs, StdCtrls;

type

  { TForm1 }

  TForm1 = class(TForm)
    Button1: TButton;
    Button2: TButton;
    Button3: TButton;
    Memo1: TMemo;
    OpenDialog1: TOpenDialog;
    SaveDialog1: TSaveDialog;
    procedure Button1Click(Sender: TObject);
    procedure Button2Click(Sender: TObject);
    procedure Button3Click(Sender: TObject);
  private

  public

  end;

var
  Form1: TForm1;

implementation

{ TForm1 }

procedure TForm1.Button1Click(Sender: TObject);
begin
  openDialog1.Filter:='файлы Пас|*/pas';
  if OpenDialog1.execute and FileExists(OpenDialog1.Filename)
  then
  Memo1.Lines.LoadFromFile(OpenDialog1.Filename);

end;

procedure TForm1.Button2Click(Sender: TObject);
begin
  if SaveDialog1.Execute then
  Memo1.Lines.SaveToFile(SaveDialog1.FileName);
end;

procedure TForm1.Button3Click(Sender: TObject);
begin
  Memo1.Lines.Clear
end;

initialization
  {$I unit1.lrs}

end.