Tkinter Window refresh

[Niels Diepeveen]

"Daley, Mark W" schreef:
> 
> I am reposting this with the hopes that the answer lies with someone out
> there.  I searched all the documentation and books I have, to no avail.

The answer is probably simple, but what exactly is the question?

> 
> > I have no idea how to do this.  I want to allow a user to manipulate a GUI
> (e.g., shrink it to the toolbar) while it is performing an operation in
> another thread.  
If the real work is going on in a different thread, there should be no
problem, other than the usual problems with multithreading. Is this
anything like you want?

#-------------------------------------------------------------------
# DON'T run this in IDLE or PythonWin
# Obviously this should be wrapped up in some classes for a real
# program

from Tkinter import *
import threading
import time

stopped = 0

def bgt():
    # What you do here doesn't really matter
    # Just a demonstration
    while not stopped:
        ltext.set(str(int(ltext.get()) + 1))
        time.sleep(0.5)
    root.destroy()

def stop():
    global stopped
    stopped = 1

root = Tk()
ltext = StringVar(root)
ltext.set('0')
label = Label(root, textvariable=ltext)
label.pack()
button = Button(root, text='Stop!', command=stop)
button.pack(side=BOTTOM)

t = threading.Thread(None, bgt)
t.setDaemon(1) # Should really call stop() and t.join()
               # on closing of the window for proper cleanup
t.start()

root.mainloop()
#-------------------------------------------------------------------


> > I am told what I want to do is
> > invalidate the GUI window every time an event occurs within it, whether it
> is a mouse click or the removal of a window that overlays it.

It sounds to me like you've been had:-) This makes no sense to me in the
context of Tkinter.

-- 
Niels Diepeveen
Endea automatisering