Tkinter：所有单选按钮都已被选中
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【中文标题】Tkinter：所有单选按钮都已被选中【英文标题】：Tkinter: All radio buttons are already selected 【发布时间】：2019-10-04 07:04:37 【问题描述】：这是我第一次使用 tkinter。我在第一个窗口上有一个输入框，我在不同的窗口上创建了单选按钮。问题是在我单击其中任何一个之前它们已经被选中。如何更改要取消选择的所有按钮？
我不确定我的代码是否正确。
from tkinter import *
from tkinter import messagebox
class SortingHat:
# Constructor
def __init__(self):
# Create main window
self.__main_window = Tk()
self.__main_window.geometry('300x200')
self.__main_window.title('Sorting Hat')
bg_image = PhotoImage(file = "HarryPotterlogo1.png")
bg_label = Label(self.__main_window, image = bg_image, bd=0)
bg_label.grid(row=1, column=0)
bg_label.image = bg_image
self.__first_label = Label(self.__main_window, text = \
'Enter Your Name.', fg = 'gold', bg = 'brown4')
self.__first_label.grid(row=2, column=0)
# Create Entry box
self.__entry = Entry(self.__main_window)
self.__entry.bind('<Return>', self.entry_action)
self.__entry.grid(row=3, column=0)
self.__button = Button(self.__main_window, text = 'Enter', \
fg = 'white', bg = 'black', command = self.action)
self.__button.grid(row=3, column=0, sticky = 'E')
self.__next_button = Button(text = 'Next', height = 1, width = 10, \
fg = 'black', bg = 'white', command = self.next1)
self.__next_button.grid(row=4, column=0, sticky ='W')
# Create OK button and Quit button
self.__quit_button = Button(text='Quit', height = 1, width = 10, \
command=self.__main_window.destroy)
self.__quit_button.grid(row=4, column=0, sticky = 'E')
def next1(self):
self.__new_window1 = Tk()
self.__new_window1.configure(bg = 'brown4')
self.__new_window1.title('Question 1')
self.__second_label = Label(self.__new_window1, text = \
'What is your favorite color? (10 points)', \
fg = 'gold', bg = 'brown4')
self.__second_label.grid(row=0, column=0, sticky = 'W')
# Question Radiobutton
self.__rb_var1 = IntVar()
# Create First question Radiobutton widgets
self.__rb1 = Radiobutton(self.__new_window1, text='a. Red and Gold', fg ='red', \
bg = 'brown4', variable=self.__rb_var1, value = 1)
self.__rb2 = Radiobutton(self.__new_window1, text='b. Green and Silver', fg = 'green', \
bg = 'brown4', variable=self.__rb_var1 , value = 2)
self.__rb3 = Radiobutton(self.__new_window1, text='c. Yellow and Black', fg = 'gold', \
bg = 'brown4', variable=self.__rb_var1, value = 3)
self.__rb4 = Radiobutton(self.__new_window1, text='d. Blue and Bronze', fg = 'blue', \
bg = 'brown4', variable=self.__rb_var1, value = 4)
self.__rb1.grid(row=1, column=0)
self.__rb2.grid(row=2, column=0)
self.__rb3.grid(row=3, column=0)
self.__rb4.grid(row=4, column=0)
我希望在程序启动时取消选择所有按钮。
【问题讨论】：
【参考方案1】：问题是您不应该打开一个新的Tk() 窗口，而是应该创建一个新的Toplevel() 窗口，这样可以解决问题。
所以不要使用self.__new_window1 = Tk()，而是使用self.__new_window1 = Toplevel()
试试这个。
def next1(self):
self.__new_window1 = Toplevel()
self.__new_window1.configure(bg = 'brown4')
self.__new_window1.title('Question 1')
# Question Radiobutton
self.__rb_var1 = IntVar()
# Create First question Radiobutton widgets
self.__rb1 = Radiobutton(self.__new_window1, text='a. Red and Gold', fg ='red', bg = 'brown4', variable=self.__rb_var1, value = 1)
self.__rb2 = Radiobutton(self.__new_window1, text='b. Green and Silver', fg='green', bg='brown4', variable=self.__rb_var1, value=2)
self.__rb3 = Radiobutton(self.__new_window1, text='c. Yellow and Black', fg='gold', bg='brown4', variable=self.__rb_var1, value=3)
self.__rb4 = Radiobutton(self.__new_window1, text='d. Blue and Bronze', fg='blue', bg='brown4', variable=self.__rb_var1, value=4)
self.__rb1.grid(row=1, column=0)
self.__rb2.grid(row=2, column=0)
self.__rb3.grid(row=3, column=0)
self.__rb4.grid(row=4, column=0)
【讨论】：
【参考方案2】：试试
self.__rb1.deselect()
self.__rb2.deselect()
self.__rb3.deselect()
self.__rb4.deselect()
【讨论】：
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