[Tkinter-discuss] Tkinter under SMP

[Douglas S. Blank]

Thanks, Jeff, for your poking around. I have installed python2.3, and 
found that the problem persists.

Here is what I think is causing the problem:

I usually create a Tk() object like:

       self.app = Tkinter.Tk()
       self.app.withdraw()
       self.win = Tkinter.Toplevel()

And in another thread, I might do the same. This seems to be the 
problem. If these two toplevels get updated slowly, then I'm fine. If I 
have them all in one thread, it seems fine too. But if I have two, and 
they are getting updated fairly quickly (multiple times/second) then it 
either causes a weird bug, or just seg faults.  I suspect that there is 
something global that both apps (or wins) are sharing.

Is there a better way of creating multiple Toplevels?

Any suggestions would be appreciated!

-Doug

Jeff Epler wrote:
> I did a little research on this and found
>     http://mail.python.org/pipermail/python-dev/2002-December/031107.html
> 
> I hope somebody else can expand on this, but (at least historically) Tk
> and Python threads didn't mix.  Maybe this is still true to some degree,
> and maybe depending on the Python version.  RedHat 9 had Python 2.2.2.
> The change discussed in that message was applied to the 2.3 branch, but
> doesn't exist in 2.2.
> 
> Jeff
> 
>