Enter Enter... troubles

[Sorin Schwimmer]

Hi All,
  
  In my application I have a class like this:
  
  from Tkinter import *
  
  class MyClass:
    def __init__(self, root):
      self.property=value
      self.aButton=Button(root, text='Press me!')
      self.aButton.bind('<Return>', self.handler)
      self.aButton.bind('<KP_Enter>',self.handler)
      ...
  
    def handler(self,event):
      self.aButton.unbind('<Return>')
      self.aButton.unbind('<KP_Enter>')
      ...
      localVar=self.property
      self.property=newCalculatedValue
      ...
      self.aButton.bind('<Return>', self.handler)
        self.aButton.bind('<KP_Enter>',self.handler)
  
  The idea is to prevent a fast user (like my boss) to press repeatedly the "enter"
  key and create havoc with self.property and localVar. But it doesn't work: my
  boss manages to start at least twice the handler (which, among other things
  creates a Toplevel, so I end up with a messy screen).
  
  How should I proceed?
  
  Thanks for your advices,
  Sorin
  
  
 
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