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