"faramarz yari" wrote: > def do_unpack(f): > f.pack_forget() > ... > b=Button(f3,text="hello",command=do_unpack(f3)) > > it does not work & the interpreter does not claim any error.
it works perfectly fine, but it doesn't do what you want. do_unpack(f3) is a function call, so you're calling the function *before* you create the button, and you're then passing the return value (None) to the button widget. if you want to use the function as a callback, use a lambda: b=Button(..., command=lambda: do_unpack(f3)) or a local function def cb(): do_unpack(f3) b=Button(..., command=cb) </F> -- http://mail.python.org/mailman/listinfo/python-list