/Demo/tkinter/matt/two-radio-groups.py
http://unladen-swallow.googlecode.com/ · Python · 110 lines · 49 code · 31 blank · 30 comment · 0 complexity · 46730b400c7764804fb16d1b5585837c MD5 · raw file
- 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()