I have an application with a button that calls a method that retrieves a
page from an external wiki, so it can take a while. I want to use an
hourglass/watch cursor to indicate to the user that the page is loading.
All the documentation suggests that the way to do this is as follows:
def my_slow_method(self):
self['cursor'] = 'watch'
self.update_idletasks()
retrieve_page_from_wiki() # placeholder for my slow retrieve
function
self['cursor'] = ''
where "self" is my Tkinter application, defined as a subclass of
Tkinter.Frame.
The only problem is, this doesn't work. The cursor never changes to the
hourglass! If I comment out the last line, it does change to an hourglass
*after* retrieving the page from the wiki, but obviously that's not what I
want to do. What's wrong?
I'm running Python 2.4 on Windows XP.
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