Tkinter: disable menu items while running

[Patrick L. Nolan]

We have a Tkinter application which has a menubar with cascade
submenus. I would like to start the program with one of the
submenu items state=DISABLED, then change it to state=NORMAL
at a later time. I hope I just missed something obvious,
because I can't figure out how to change its state.

The problem comes about because the menu bar is built by several
add_cascade() calls. Each of the cascades, in turn, has
several add_command() calls. If the cascade in question was,
say, an object named Cas, then I could call Cas.entryconfig ure().
However, I don't know how to get ahold of the objects
created by add_cascade() or add_command(). Do they live
somewhere accessible?

--
* Patrick L. Nolan *
* W. W. Hansen Experimental Physics Laboratory (HEPL) *
* Stanford University *

[Pierre Quentel]

Re: Tkinter: disable menu items while running

Menu widgets have an index, used to get/set their properties
There must be more elegant solutions, but this should work :

----------------------
from Tkinter import *

root=Tk()

def hello():
print "hello !"

def toggle():
if submenu.entrycg et(0,"state")== "normal":
submenu.entryco nfig(0,state=DI SABLED)
submenu.entryco nfig(1,label="S peak please")
else:
submenu.entryco nfig(0,state=NO RMAL)
submenu.entryco nfig(1,label="Q uiet please")

menubar = Menu(root)

submenu=Menu(me nubar,tearoff=0 )

submenu2=Menu(s ubmenu,tearoff= 0)
submenu2.add_co mmand(label="He llo", command=hello)

# this cascade will have index 0 in submenu
submenu.add_cas cade(label="Say ",menu=submenu2 ,state=DISABLED )
# these commands will have index 1 and 2
submenu.add_com mand(label="Spe ak please",command =toggle)
submenu.add_com mand(label="Exi t", command=root.qu it)

menubar.add_cas cade(label="Tes t",menu=submenu )

# display the menu
root.config(men u=menubar)
root.mainloop()
----------------------Hope this helps,
Pierre