| 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. |