title: How do I disable all the user input widgets (buttons,entries..) from a parent widget?
body: <p>I am designing a GUI using Python and Tkinter. All the buttons and entries required to register the user input commands are placed inside a main <a href="http://effbot.org/tkinterbook/frame.htm" rel="nofollow">frame</a> and are their child widgets. </p>
  
  <p>I want to know if it is possible to disable all the input functionality from these widgets by propagating some "disable" flag from the main frame to all the input widgets.
  In this way, I was hoping to be able to toggle their state in a single line of code.</p>
  
  <p>I believe that should be possible. Does anyone know how to do this?</p>