title: How to make a form's area not clickable without disabling its controls
body: <p>I have a Winform project in VB.net 2013.
  On a form I have a lot's of controls.
  When a condition is true , I need to make all the controls inside a specific form's area , not clickable ( but without disabling them ) 
  Of course , when the condition became false the area should return to normal state.
  Thank you !</p>