interface

private
procedure AppMessage(var Msg: TMsg; var handled: Boolean);
end;

implementation

procedure TForm1.AppMessage(var Msg: TMsg; var handled: Boolean);
begin
if (Msg.Message = WM_SYSCOMMAND) and (Msg.wParam = SC_SCREENSAVE) then
Handled := True;
end;

procedure TForm1.FormCreate(Sender: TObject);
begin
Application.OnMessage := AppMessage;
end;

{
Note: The Screensaver is only disabled during the lifespan of
your application.

Bemerkung: Der Screensaver bleibt nur solange deaktiviert,
wie ihre Applikation lдuft. $
}