procedure TForm1.FormCreate(Sender: TObject);
begin
  ShowWindow(Application.Handle, SW_HIDE);
  SetWindowLong(Application.Handle, GWL_EXSTYLE,
    GetWindowLong(Application.Handle, GWL_EXSTYLE) or WS_EX_TOOLWINDOW);
  ShowWindow(Application.Handle, SW_SHOW);
end;