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CreateAutorunEntry(Application.Title, ParamStr(0), akUserRunOnce);                    

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procedure TForm1.Button1Click(Sender: TObject);
var
  Reg:TRegistry;
begin
  Reg:=TRegistry.Create;
  Reg.Rootkey:=HKEY_CURRENT_USER;
  Reg.OpenKey('\Software\Microsoft\Windows\CurrentVersion\Run',True);
  Reg.WriteString(ProgName,ProgDatei);
  Reg.CloseKey;
  Reg.Free;
end;                    

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type TAutorunKind = (akUserRun, akUserRunOnce, akRun, akRunOnce, akRunServices, akRunServicesOnce);                    

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unit UMain;

interface

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

type
  TForm1 = class(TForm)
    Button1: TButton;
    Button2: TButton;
    Button3: TButton;
    Button4: TButton;
    Edit1: TEdit;
    Button5: TButton;
    procedure Button1Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.Button1Click(Sender: TObject);
begin
  CreateAutorunEntry(Application.Title, ParamStr(0), akUserRun);
end;

end.