unit unit1; 
 
interface 
 
uses 
  Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs, 
  StdCtrls, ExtCtrls, Grids, shellapi; 
 
type 
  TForm1 = class(TForm) 
    Edit1: TEdit; 
    Button1: TButton; 
    procedure FormCreate(Sender: TObject); 
  private 
{ Private-Deklarationen} 
  public 
    procedure AppActivate(sender: tobject); 
  end; 
 
var 
  Form1: TForm1; 
 
implementation 
 
{$R *.DFM} 
 
procedure TForm1.AppActivate(sender: tobject); 
begin 
  Edit1.setfocus; // oder was auch immer 
end; 
 
procedure TForm1.FormCreate(Sender: TObject); 
begin 
  application.OnActivate := AppActivate; 
end; 
 
end.