[marcoszorrilla]

Mira este ejemplo a ver si con esto te sirve:

unit Unit1;

interface

uses
  Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
  StdCtrls, ExtCtrls;
  
type
  TForm1 = class(TForm)
    Button1: TButton;
    procedure Button1Click(Sender: TObject);
  
    Procedure MiEvento(Sender:TObject);
  private
    { Private declarations }
  public
    { Public declarations }

  end;

var
  Form1: TForm1;

implementation

{$R *.DFM}

procedure TForm1.Button1Click(Sender: TObject);
var
FTimer : TTimer;
begin
FTimer := TTimer.Create(Self);
FTimer.Enabled := True;
FTimer.Interval := 5000;
FTimer.OnTimer:=MiEvento;
end;

Procedure TForm1.MiEvento(Sender:TObject);
begin
ShowMessage('Ya está Tonio');
end;


end.

Un Saludo.