import os
import sys
import _tkinter
import Tkinter
from Tkinter import *
 
class CustomButton(Button):
        def __init__(self,master,*args,**kwargs):
                Button.__init__(self,master,*args,**kwargs)
                self.bind('<Button-3>', self.on_mouse_rightclick)
                self.entry=None
                self['text']='12345'
        def on_mouse_rightclick(self, event):
                print 'on_mouse_rightclick'
                if self.entry!=None:
                        print 'Non-null entry'
                        return
                self.prev_state = self["state"]
                self.entry=Entry(self,{"width":8})
                self.entry.pack(side=TOP,anchor=W)
                self.entry.insert(0,self['text'])
                self.entry.bind('<Return>', self.on_entry_edit)
                self.entry.bind('<Escape>', self.on_escape)
                self['state']=DISABLED
                self.lower(self.entry)
                return
        def on_entry_edit(self, event):
                print 'on_entry_edit'
                entry_str = self.entry.get()
                self['text']=entry_str
                self.lift()
                self['state']=self.prev_state
                self.entry.destroy()
                self.entry=None
        def on_escape(self, event):
                print 'on_escape'
                if self.entry==None:
                        return
                self.lift()
                self['state']=self.prev_state
                self.entry.destroy()
                self.entry=None
 
 
class Application(Frame):
        def __init__(self, master=None):
                self.root = Tk()
                Frame.__init__(self, master)
                self.button=CustomButton(self)
                self.button.pack(side="top",anchor=N)
                self.button2=CustomButton(self)
                self.button2.pack(side="top",anchor=N)
                self.pack()
 
app = Application()
app.mainloop()