title: Event which occurs when form is focused
body: <p>I have two forms first is frmBase and second is frmBalloon.I alter the focus of both forms that first frmBase is shown then frmBalloon is shown(frmBase is not visible)and then again frmBase is shown.Now I have need of event that occurs first frmBase loads and then again when it shows after frmBalloon becomes not visible.</p>
  
  <p>So I have need of event that occurs when form becomes focused.......</p>