[issue21757] Can't reenable menus in Tkinter on Mac

[Mark Bell]

New submission from Mark Bell:

The following example is a Tkinter app with a button that toggles the menu being enabled based off of https://mail.python.org/pipermail/tkinter-discuss/2004-September/000204.html

#-----------------------------------

from Tkinter import *

root=Tk()

def hello():
    print('hello!')

def toggle():
	print('I think the menu bar is %s' % menubar.entrycget(0, 'state'))
	if menubar.entrycget(0, 'state')=='normal':
		print('disabling')
		menubar.entryconfig(0,state=DISABLED)
		print('disbled')
	else:
		print('enabling')
		menubar.entryconfig(0,state=NORMAL)
		print('enabled')

menubar = Menu(root)
submenu = Menu(menubar, tearoff=0)
submenu.add_command(label='Hello', command=hello)
menubar.add_cascade(label='test', menu=submenu)

# this cascade will have index 0 in submenu
b = Button(root, text='Toggle', command=toggle)
b.pack()

# display the menu
root.config(menu=menubar)
root.mainloop()

#-----------------------------------

On Windows 7 and Ubuntu 14.04 (using Python 2.7.6 and Tkinter Revision 81008) clicking the button toggles the menu being enabled. However, on Mac 10.9 (again under Python 2.7.6 and Tkinter Revision 81008) the menu becomes stuck disabled. 

Additionally, the example also prints out what state it thinks the menu has (using entrycget) and it would print out that it thought that the menu was in fact alternating between enabled and disabled.

Others have verified this being the case. See: http://stackoverflow.com/questions/24207870/cant-reenable-menus-in-python-tkinter-on-mac

----------
components: Tkinter
files: tkinter_test.py
messages: 220553
nosy: Mark.Bell
priority: normal
severity: normal
status: open
title: Can't reenable menus in Tkinter on Mac
type: behavior
versions: Python 2.7
Added file: http://bugs.python.org/file35628/tkinter_test.py

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<http://bugs.python.org/issue21757>
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