Improved some error messages for command line processing.

[python/dscho.git] / Demo / tkinter / guido / hello.py

# Display hello, world in a button; clicking it quits the program

import sys
from Tkinter import *

def main():
        root = Tk()
        button = Button(root)
        button['text'] = 'Hello, world'
        button['command'] = quit_callback       # See below
        button.pack()
        root.mainloop()

def quit_callback():
        sys.exit(0)

main()