"gert" <gert.cuyk...@gmail.com>wrote:
> After reading the docs and seeing a few examples i think this should
> work ?
> Am I forgetting something here or am I doing something stupid ?
> Anyway I see my yellow screen, that has to count for something :)
>
> from tkinter import *
> from threading import Thread
>
> class Weegbrug(Thread):
> def __init__(self,v):
> self.v=v
> Thread.__init__(self)
> def run(self):
> while True:
> with open('com1','r') as f:
> for line in f:
> self.v.set(line[2:-1])
It is in general not a good idea to directly
access GUI variables from outside the
GUI main loop.
There is a recipe for doing this sort of thing,
but as usual I have lost the reference.
What it does is that instead of interfering directly
as above, you put the data on a queue.
Then, you use the after() call to set up a call
to a routine that reads the queue, and configures the
display, and then uses after again to call itself again
after a time, thereby keeping the GUI stuff in the GUI
mainloop.
HTH - Hendrik
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