python 复选框 checkbutton

"create a bar of check buttons that run dialog demos"

from tkinter import * # get base widget set from dialogTable import demos # get canned dialogs from quitter import Quitter # attach a quitter object to "me"

class Demo(Frame): def init(self, parent=None, **options): Frame.init(self, parent, **options) self.pack() self.tools() Label(self, text="Check demos").pack() self.vars = [] for key in demos: var = IntVar() Checkbutton(self, text=key, variable=var, command=demos[key]).pack(side=LEFT) self.vars.append(var)

def report(self):
    for var in self.vars:
        print(var.get(), end=' ')   # current toggle settings: 1 or 0
    print()

def tools(self):
    frm = Frame(self)
    frm.pack(side=RIGHT)
    Button(frm, text='State', command=self.report).pack(fill=X)
    Quitter(frm).pack(fill=X)

if name == 'main': Demo().mainloop()

--

define a name:callback demos table

from tkinter.filedialog import askopenfilename # get standard dialogs from tkinter.colorchooser import askcolor # they live in Lib\tkinter from tkinter.messagebox import askquestion, showerror from tkinter.simpledialog import askfloat

demos = { 'Open': askopenfilename, 'Color': askcolor, 'Query': lambda: askquestion('Warning', 'You typed "rm *"\nConfirm?'), 'Error': lambda: showerror('Error!', "He's dead, Jim"), 'Input': lambda: askfloat('Entry', 'Enter credit card number') }

-- """ a Quit button that verifies exit requests; to reuse, attach an instance to other GUIs, and re-pack as desired """

from tkinter import * # get widget classes from tkinter.messagebox import askokcancel # get canned std dialog

class Quitter(Frame): # subclass our GUI def init(self, parent=None): # constructor method Frame.init(self, parent) self.pack() widget = Button(self, text='Quit', command=self.quit) widget.pack(side=LEFT, expand=YES, fill=BOTH)

def quit(self):
    ans = askokcancel('Verify exit', "Really quit?")
    if ans: Frame.quit(self)

if name == 'main': Quitter().mainloop()