Hope you do not mind ignoring part of answers, so I can figure out
more why things work the way they are.
This two examples work, what i do not understand is that in function
display i do not have to declare root, v or x ?
----------
example 1
----------
from tkinter import *
from _thread import start_new_thread
from time import sleep
x=0
def weegbrug():
global x
while True:
x=x+1
sleep(0.5)
start_new_thread(weegbrug,())
def display():
v.set(x)
root.after(500, lambda:display())
root = Tk()
v = StringVar()
txt = Label(root, textvariable=v, width=800, height=600, bg='yellow',
font=('Helvetica', 300))
txt.pack(expand=YES, fill=BOTH)
root.title('Weegbrug')
root.overrideredirect(1)
root.geometry('%dx%d+0+0' % (root.winfo_screenwidth(),
root.winfo_screenheight()))
root.after(500, lambda:display())
root.mainloop()
----------
example 2
----------
from tkinter import *
from threading import Thread
from time import sleep
class Weegbrug(Thread):
def __init__(self):
self.x=0
Thread.__init__(self)
def run(self):
while True:
self.x=self.x+1
sleep(0.5)
w = Weegbrug()
w.start()
def display():
v.set(w.x)
root.after(500, lambda:display())
root = Tk()
v = StringVar()
txt = Label(root, textvariable=v, width=800, height=600, bg='yellow',
font=('Helvetica', 300))
txt.pack(expand=YES, fill=BOTH)
root.title('Weegbrug')
root.overrideredirect(1)
root.geometry('%dx%d+0+0' % (root.winfo_screenwidth(),
root.winfo_screenheight()))
root.after(500, lambda:display())
root.mainloop()
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