How to remove your application from TaskBar

If you need to hide your application from the Windows TaskBar, you can use the following trick:

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;