On 17/06/06, Christopher Spears <[EMAIL PROTECTED]> wrote: > I understand this: > > > > def f(w): gtk.main_quit() > > button.connect("clicked", f) > > > Now my question is what is "w"? What is being passed > to the function?
I don't know GTK, but I would guess some kind of event class. Other GUIs I've used (Tkinter, wxPython) pass event objects to callbacks, which contain information like - which mouse button was clicked - the exact mouse coordinates (relative to the corner of the screen or the corner of the widget) - which key was pressed etc. You may know some of the information, some of it may not apply, you may not care about the rest of it, but you usually get it anyway :-) In this case, the program doesn't care about any of the extra information, so it accepts the event, but it does nothing with it. Try this: def show(e): print e print 'Class:', e.__class__ print 'Members:' for attr in dir(e): print '%s: %s' % (attr, getattr(e, attr)) button.connect("clicked", show) -- John. _______________________________________________ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor