title: Need know which element get focus when another element lost focus
body: <p>I have many controls in a window. Requirement is to know which control gets the focus from the lost focus event of a control.</p>
  
  <p>Say, A Text box and it has the focus. Now I am clicking a button. while doing this, need to know that i am moving the focus to button from the Text box lost focus event.</p>
  
  <p>So how could i achieve this..</p>