On Thu, Sep 01, 2011 at 10:37:31AM -0400, Douglas S. Blank wrote:
.
.
.
> On 09/01/2011 10:21 AM, �������� wrote:
> >def myprint():
> > print root.winfo_pointerxy()
> >
> >canvas.bind("<Button-1>",myprint)
>
> When you bind a function to the canvas, it is expecting a function that
> takes an argument (which is probably the object to which the binding is
> bound).
>
> So, you could just allow myprint to take an argument, and ignore it:
>
> def myprint(arg):
> print root.winfo_pointerxy()
.
.
.
I entirely agree with the counsel Dr. Blank has provided.
While I expect the original questioner has all he needs to
move forward, I'll provide a bit more detail for the
benefit of other readers.
Let's look at "arg", "which is probably the object to
which the binding is bound". It's not; it's the detected
*event* (from which that object can be calculated, though)
<URL:
http://www.pythonware.com/library/tkinter/introduction/events-and-bindings.htm
>.
That's not all. One could temporarily update myprint's
definition to be something like
def myprint(arg):
print "arg is '%s'." % arg
print dir(arg)
print root.winfo_pointerxy()
to have Python's introspection report more information
about the argument.
And *that* isn't all, either. If one were somehow
stranded-on-a-desert-island and unsure how many (not-
necessarily-named) arguments were arriving, one could
experiment with
def myprint(*kw):
print kw
...
_______________________________________________
Tkinter-discuss mailing list
Tkinter-discuss@python.org
http://mail.python.org/mailman/listinfo/tkinter-discuss
