+# This program shows how to use a simple type-in box
+ def __init__(self, master=None):
+ Frame.__init__(self, master)
+ self.entrythingy = Entry()
+ # 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"
+# 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.