title: Hook close (X) button in compact framework appliacation
body: <p>I want to do my own action on tap (click) to close button ( X in right top corner ) in compact framework appliaction. I'm using Windows Mobile 6.1.</p>
  
  <p>Usualy I want default behaviour, but sometimes I want to change the usercontrol on current form. How can I reach it?</p>
  
  <p>Thanks!</p>