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unit Unit1;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls, ExtCtrls, Buttons, ComCtrls, ColorGrd;

type
  TForm1 = class(TForm)
    Edit1: TEdit;
    Button1: TButton;
    Edit2: TEdit;
    Button2: TButton;
    Button3: TButton;
    Edit3: TEdit;
    BitBtn1: TBitBtn;
    BitBtn2: TBitBtn;
    Label1: TLabel;
    Label2: TLabel;
    Label3: TLabel;
    Memo1: TMemo;
    Label4: TLabel;
    Label5: TLabel;
    Timer1: TTimer;
    RichEdit1: TRichEdit;
    ColorDialog1: TColorDialog;
    Button4: TButton;
    procedure FormCreate(Sender: TObject);
    procedure Timer1Timer(Sender: TObject);
    procedure Button1Click(Sender: TObject);
    procedure Button4Click(Sender: TObject);
    procedure BitBtn2Click(Sender: TObject);
    procedure Button2Click(Sender: TObject);
    procedure Button3Click(Sender: TObject);
    procedure BitBtn1Click(Sender: TObject);
  private
    { Private-Deklarationen }
  public
    { Public-Deklarationen }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}
var i:textFile;
d,user,k:string;
procedure TForm1.BitBtn1Click(Sender: TObject);
begin
  Close;
end;

procedure TForm1.Button3Click(Sender: TObject);
begin
  d:=edit3.text;
  Richedit1.Lines.LoadFromFile(d +k);

  Richedit1.Perform(WM_VSCROLL, SB_BOTTOM, 0);
  label4.caption:=d;
  label5.Visible:=true;
  edit3.Text:='';
  timer1.enabled:=true;
end;

procedure TForm1.Button2Click(Sender: TObject);
var a, e:integer;
begin
  d:=edit2.Text;
  AssignFile(i,d + k);
  rewrite (i);
  CloseFile(i);
  label4.caption:=d;
  label5.Visible:=true;
  edit2.Text:='';
  timer1.enabled:=true;
end;

procedure TForm1.BitBtn2Click(Sender: TObject);
var e,a:integer;
begin
  AssignFile(i,d + k);
  append (i);
  e:=Memo1.Lines.Count;
  for a:=0 to e-1 do
    writeln (i, user + ' sagt: ' + memo1.Lines.Strings[a]);
  CloseFile(i);

  memo1.clear;

end;

procedure TForm1.Button4Click(Sender: TObject);
begin
RichEdit1.Font.Color := ColorDialog1.Color;
end;

procedure TForm1.Button1Click(Sender: TObject);
begin
edit1.Enabled:=false;

user:=edit1.Text;
end;



procedure TForm1.Timer1Timer(Sender: TObject);
begin
  Richedit1.Lines.LoadFromFile(d + k);

  Richedit1.Perform(WM_VSCROLL, SB_BOTTOM, 0);
end;

procedure TForm1.FormCreate(Sender: TObject);
begin
k:='.rtf';
end;

end.