python开发_tkinter_复选菜单

时间：2023-03-09 08:37:57
python开发_tkinter_复选菜单

在之前的blog中有提到python的tkinter中的菜单操作

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下面是tkinter中复选菜单的操作

运行效果：

1.初始化的时候，最后一个子菜单被选中。

python开发_tkinter_复选菜单

2.选择子菜单项，所触发的事件...

python开发_tkinter_复选菜单

==============================================================

代码部分：

==============================================================

 from tkinter import *

 __author__ = {'name' : 'Hongten',

               'mail' : 'hongtenzone@foxmail.com',

               'blog' : 'http://www.cnblogs.com/',

               'QQ': '',

               'created' : '2013-09-10'}

 #状态标志

 pepperonis = False

 anchovies = 0

 def print_pepperonis():

     global pepperonis

     pepperonis = not pepperonis

     print('pepperonis?', pepperonis)

 def print_anchovies():

     '''从这里我们可以判断出'Anchovy'子菜单是否处于选择状态'''

     global anchovies

     anchovies = not anchovies

     print("anchovies?", anchovies)

 def makeCheckbuttonMenu():

     # make menu button

     Checkbutton_button = Menubutton(mBar, text='Checkbutton Menus',

                                     underline=0)

     Checkbutton_button.pack(side=LEFT, padx='2m')

     # the primary pulldown

     Checkbutton_button.menu = Menu(Checkbutton_button)

     # and all the check buttons. Note that the "variable" "onvalue" and "offvalue" options

     # are not supported correctly at present. You have to do all your application

     # work through the calback.

     Checkbutton_button.menu.add_checkbutton(label='Pepperoni', command=print_pepperonis)

     Checkbutton_button.menu.add_checkbutton(label='Sausage')

     Checkbutton_button.menu.add_checkbutton(label='Extra Cheese')

     # so here's a callback

     Checkbutton_button.menu.add_checkbutton(label='Anchovy',

                                             command=print_anchovies)

     #初始化时，被选中状态

     #

     # and start with anchovies selected to be on. Do this by

     # calling invoke on this menu option. To refer to the "anchovy" menu

     # entry we need to know it's index. To do this, we use the index method

     # which takes arguments of several forms:

     #

     # argument        what it does

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

     # a number        -- this is useless.

     # "last"          -- last option in the menu

     # "none"          -- used with the activate command. see the man page on menus

     # "active"        -- the currently active menu option. A menu option is made active

     #                         with the 'activate' method

     # "@number"       -- where 'number' is an integer and is treated like a y coordinate in pixels

     # string pattern  -- this is the option used below, and attempts to match "labels" using the

     #                    rules of Tcl_StringMatch

     Checkbutton_button.menu.invoke(Checkbutton_button.menu.index('Anchovy'))

     # set up a pointer from the file menubutton back to the file menu

     Checkbutton_button['menu'] = Checkbutton_button.menu

     return Checkbutton_button

 #################################################

 #### Main starts here ...

 root = Tk()

 root.geometry('250x200')

 root.title('menu demo')

 root.iconname('menu demo')

 # make a menu bar

 mBar = Frame(root, relief=RAISED, borderwidth=2)

 mBar.pack(fill=X)

 Checkbutton_button = makeCheckbuttonMenu()

 mBar.tk_menuBar(Checkbutton_button)

 root.mainloop()

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