Shutting Down in TKinter

[asdfj]

I've just read through all the other posts on this forum about shutting the pi down through something that looks like this:

import os
os.system("shutdown now")

Unfortunately, neither this nor any other variation of this code will work for my program. I am trying to add a menu item that allows the user to turn off the pi. Here's what I have:

filemenu.add_command(label='Shutdown', command = os.system("shutdown now"))

Early attempts (which looked similar but I didn't think to save them as they didn't work either) would shut the pi down immediately after I ran the module. Now, it doesn't do anything at all. Any help is appreciated!

[KenT]

call(['sudo', 'shutdown', '-h', '-t 5','now'])

works for me when using Tkinter although I don't think anything special is needed for Tkinter.

Google man shutdown to see what the fields mean.

Also I don't thinkcommands in Tkinter menus can have parameters unless they are lambda ones.

[-rst-]

I would start by creating a function and tying it to the Tkinter command - something like:

Code: Select all

def my_handler_func():
    print "my_handler_func()"


...
    filemenu.add_command(label='Shutdown', command = my_handler_func) # or maybe: self.my_handler_func

When you get that print to come up, you can be sure that the binding to menu is ok - then replace with the os.system("sudo shutdown -h now").