from Tkinter import *
import Pmw
root = Tk()
root.option_readfile('optionDB')
root.title('ButtonBox')
Pmw.initialise()

def buttonPress(btn):
    print 'The "%s" button was pressed' % btn

def defaultKey(event):
    buttonBox.invoke()

buttonBox = Pmw.ButtonBox(root, labelpos='nw', label_text='ButtonBox:')
buttonBox.pack(fill=BOTH, expand=1, padx=10, pady=10)

buttonBox.add('OK',     command = lambda b='ok':     buttonPress(b))
buttonBox.add('Apply',  command = lambda b='apply':  buttonPress(b))
buttonBox.add('Cancel', command = lambda b='cancel': buttonPress(b))

# Set the default button (the one executed when <Enter> is hit).
buttonBox.setdefault('OK')
root.bind('<Return>', defaultKey)
root.focus_set()

buttonBox.alignbuttons()


root.mainloop()