[Tutor] Tkinter mainloop()

[Francesco Loffredo]

Il 07/07/2010 9.11, Alan Gauld wrote:
>
> "Francesco Loffredo" <ilcomputertrasparente at gmail.com> wrote
>
>> ... What's the
>> difference between the two methods?
>
> Its a little bit subtle but I believbe update() updates all widgets
> whereas update_idle_tasks will only update those widgets that
> have changed since the last update. In a complex GUI this can
> be notably faster. Most of the books I've seen recommend not
> using update() as it can cause race conditions but I have no experience
> of that - because I use update_idle_tasks! :-)

Ok, now I'm using update_idletasks() too (update_idle_tasks() doesn't 
exist) and I like it. Thanks a lot!

> ...

>> where would you put the
>> automatic move call, if not where I did? I need an automatic move be
>> performed at the proper moment, when it's the computer player turn.
>
> Create the auto move in an event handler of its own and associate
> with an event. Then raise that event when your players move is finished.
> Tkinter will then call the automove for you, updating the screeen
> automatically. In an event driven environment control is passed
> around by means of events.
I prefer not to make this project fully event driven, because while it's 
fairly easy to translate a mouse click into the game coordinates of the 
hex that's being clicked, I don't like translating a pair of integers to 
some point (maybe the center) of an hexagon, creating an Event 
structure, raising that Event and handling it, just to figure out...the 
same couple of integers I started with. No, I prefer not to create fake 
Events when there's none involved... at least in this little game. I'll 
remember your advice for some serious project!
>
> How do you raise an event in Tkinter?
> Use the event_generate() method.
And this would have been my next question, thanks for mind-reading!
>
> Alternatively use the after() method with a short delay - say 10ms...
That's what I actually did. It plays like a charm! THANK YOU!
>
> HTH,
   SID!

Francesco