"""Demonstrate the various selection modes of a listbox."""

from Tkinter import *

class App:


    def __init__(self, parent):
	self.parent = parent
	self.create_widgets()

    def create_widgets(self):
	self.listbox1 = Listbox(self.parent, width=20, height=10,
				exportselection=0)
	self.listbox1.pack(expand=1, fill=BOTH)

	self.radios = []
	self.v_mode = StringVar()
	self.v_mode.set(self.listbox1['selectmode'])
	for mode in ['single', 'browse', 'multiple', 'extended']:
	    b = Radiobutton(self.parent,
			    text=mode,
			    value=mode,
			    variable=self.v_mode,
			    anchor=W,
			    command=self.set_it)
	    b.pack(fill=X)

	for line in ['one', 'two', 'three', 'four', 'five']:
	    self.listbox1.insert(END, line)

    def set_it(self):
	self.listbox1.config(selectmode=self.v_mode.get())


# Boilerplate from here on...
if __name__ == '__main__':
    root = Tk()
    app = App(root)
    root.mainloop()