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-rw-r--r--Demo/tkinter/matt/two-radio-groups.py110
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diff --git a/Demo/tkinter/matt/two-radio-groups.py b/Demo/tkinter/matt/two-radio-groups.py
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-from tkinter import *
-
-# The way to think about this is that each radio button menu
-# controls a different variable -- clicking on one of the
-# mutually exclusive choices in a radiobutton assigns some value
-# to an application variable you provide. When you define a
-# radiobutton menu choice, you have the option of specifying the
-# name of a varaible and value to assign to that variable when
-# that choice is selected. This clever mechanism relieves you,
-# the programmer, from having to write a dumb callback that
-# probably wouldn't have done anything more than an assignment
-# anyway. The Tkinter options for this follow their Tk
-# counterparts:
-# {"variable" : my_flavor_variable, "value" : "strawberry"}
-# where my_flavor_variable is an instance of one of the
-# subclasses of Variable, provided in Tkinter.py (there is
-# StringVar(), IntVar(), DoubleVar() and BooleanVar() to choose
-# from)
-
-
-
-def makePoliticalParties(var):
- # make menu button
- Radiobutton_button = Menubutton(mBar, text='Political Party',
- underline=0)
- Radiobutton_button.pack(side=LEFT, padx='2m')
-
- # the primary pulldown
- Radiobutton_button.menu = Menu(Radiobutton_button)
-
- Radiobutton_button.menu.add_radiobutton(label='Republican',
- variable=var, value=1)
-
- Radiobutton_button.menu.add('radiobutton', {'label': 'Democrat',
- 'variable' : var,
- 'value' : 2})
-
- Radiobutton_button.menu.add('radiobutton', {'label': 'Libertarian',
- 'variable' : var,
- 'value' : 3})
-
- var.set(2)
-
- # set up a pointer from the file menubutton back to the file menu
- Radiobutton_button['menu'] = Radiobutton_button.menu
-
- return Radiobutton_button
-
-
-def makeFlavors(var):
- # make menu button
- Radiobutton_button = Menubutton(mBar, text='Flavors',
- underline=0)
- Radiobutton_button.pack(side=LEFT, padx='2m')
-
- # the primary pulldown
- Radiobutton_button.menu = Menu(Radiobutton_button)
-
- Radiobutton_button.menu.add_radiobutton(label='Strawberry',
- variable=var, value='Strawberry')
-
- Radiobutton_button.menu.add_radiobutton(label='Chocolate',
- variable=var, value='Chocolate')
-
- Radiobutton_button.menu.add_radiobutton(label='Rocky Road',
- variable=var, value='Rocky Road')
-
- # choose a default
- var.set("Chocolate")
-
- # set up a pointer from the file menubutton back to the file menu
- Radiobutton_button['menu'] = Radiobutton_button.menu
-
- return Radiobutton_button
-
-
-def printStuff():
- print("party is", party.get())
- print("flavor is", flavor.get())
- print()
-
-#################################################
-#### Main starts here ...
-root = Tk()
-
-
-# make a menu bar
-mBar = Frame(root, relief=RAISED, borderwidth=2)
-mBar.pack(fill=X)
-
-# make two application variables,
-# one to control each radio button set
-party = IntVar()
-flavor = StringVar()
-
-Radiobutton_button = makePoliticalParties(party)
-Radiobutton_button2 = makeFlavors(flavor)
-
-# finally, install the buttons in the menu bar.
-# This allows for scanning from one menubutton to the next.
-mBar.tk_menuBar(Radiobutton_button, Radiobutton_button2)
-
-b = Button(root, text="print party and flavor", foreground="red",
- command=printStuff)
-b.pack(side=TOP)
-
-root.title('menu demo')
-root.iconname('menu demo')
-
-root.mainloop()