Timer offline laufen

[chiller4fun1990]

Delphi-Quellcode:

unit Unit1;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, IniFiles, ExtCtrls, StdCtrls;

type
  TForm1 = class(TForm)
    Button1: TButton;
    Label1: TLabel;
    Timer1: TTimer;
    procedure Button1Click(Sender: TObject);
    procedure Timer1Timer(Sender: TObject);
    procedure FormCreate(Sender: TObject); // FormCreate ist die Lösung
  private
    { Private declarations }
    Zielzeit: TTime;
    function GetIniFilename: string;
    function ReadZeitwert: TDateTime;
    procedure WriteZeitwert(Zeit: TDateTime);
  public
    { Public declarations }
    property IniFilename: string read GetIniFilename;
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

const
  SECTION = 'Daten';
  IDENT = 'Zielzeit';

function TForm1.GetIniFilename: string;
begin
  Result := ExtractFilePath(ParamStr(0)) + 'zeit.ini';
end;

function TForm1.ReadZeitwert: TDateTime;
var
  ini: TIniFile;
begin
  ini := TIniFile.Create(IniFilename);
  try
    Result := ini.ReadDateTime(SECTION, IDENT, 0);
  finally
    ini.Free;
  end;
end;

procedure TForm1.WriteZeitwert(Zeit: TDateTime);
var
  ini: TIniFile;
begin
  ini := TIniFile.Create(IniFilename);
  try
    ini.WriteDateTime(SECTION, IDENT, Zeit);
  finally
    ini.Free;
  end;
end;

procedure TForm1.Button1Click(Sender: TObject);
begin
  Zielzeit := now + 1;
  WriteZeitwert(Zielzeit);
  Timer1.Enabled:=true;
end;

procedure TForm1.Timer1Timer(Sender: TObject);
begin
  Label1.Caption:= TimeToStr(zielzeit - now);
  if now >= Zielzeit then
  begin
    Timer1.enabled:=false;
  end;
end;

procedure TForm1.FormCreate(Sender: TObject); // FormCreate verwenden
begin
  Zielzeit := ReadZeitwert; 
  Timer1.Enabled := Zielzeit > now; 
end;

end.

Wo bitteschön sollte hier der Fehler sein?