View file File name : bind-w-mult-calls-p-type.py Content :from Tkinter import * import string # This program shows how to use a simple type-in box class App(Frame): def __init__(self, master=None): Frame.__init__(self, master) self.pack() self.entrythingy = Entry() self.entrythingy.pack() # and here we get a callback when the user hits return. we could # make the key that triggers the callback anything we wanted to. # other typical options might be <Key-Tab> or <Key> (for anything) self.entrythingy.bind('<Key-Return>', self.print_contents) # Note that here is where we bind a completely different callback to # the same event. We pass "+" here to indicate that we wish to ADD # this callback to the list associated with this event type. # Not specifying "+" would simply override whatever callback was # defined on this event. self.entrythingy.bind('<Key-Return>', self.print_something_else, "+") def print_contents(self, event): print "hi. contents of entry is now ---->", self.entrythingy.get() def print_something_else(self, event): print "hi. Now doing something completely different" root = App() root.master.title("Foo") root.mainloop() # secret tip for experts: if you pass *any* non-false value as # the third parameter to bind(), Tkinter.py will accumulate # callbacks instead of overwriting. I use "+" here because that's # the Tk notation for getting this sort of behavior. The perfect GUI # interface would use a less obscure notation.