Threads and Tkinter GUI ...

[Grant Edwards]

In article <39F40343.2978F59B at stud.cs.uit.no>, Arild Hansen wrote:

>what I want: When I start the xclient I first create a thread called
>"pingServer" which is resonsible for pinging the server at regular
>intervals. When this thread is started I start the GUI's mainloop.
>I will then have a GUI running and a thread running in the background
>pinging the server. If the server is not found, the pingServer thread
>will update a global variable and a led light will turn red in the GUI.

If I were you, I'd just use the after() method on the top-level window to
schedule a function to run every 5 seconds.  It's a lot simpler than doing
the whole thread thing.

I don't seem to have an example handy, but it works something like this
(warning, I've been doing pyGtk stuff more recently than Tkinter stuff, so I
may have this not-quite-right, so you should probably find a real example or
look at the Tk docs):

def doSomething(*args):
   # insert ping code here
   win.after(5000, doSomething)   

win = Tk()

# set up everything

...

# start pinging 

doSomething()

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