title: Making Menu options with Checkbutton in Tkinter?
body: <p>I am making a Menu using Tkinter, but I wanted to put <code>"add_checkbutton"</code> instead of <code>"add_command"</code> into the menu options, but problem is: how i deselect/select a checkbox?</p>
  
  <pre><code>menu = Menu(parent)
  
  parent.config(menu=menu)
  
  viewMenu = Menu(menu)
  
  menu.add_cascade(label="View", menu=viewMenu)
  viewMenu.add_command(label = "Show All", command=self.showAllEntries)
  viewMenu.add_command(label="Show Done", command= self.showDoneEntries)
  viewMenu.add_command(label="Show Not Done", command = self.showNotDoneEntries)
  </code></pre>