我正在创建一个设置窗口,但我无法弄清如何为单选按钮设置默认值。我希望窗口启动时选择黑色,并且如果用户没有单击任何按钮,仍将返回“B”值。感谢您的帮助。
import tkinter
from tkinter import ttk
class Test:
def __init__(self):
self.root_window = tkinter.Tk()
#create who goes first variable
self.who_goes_first = tkinter.StringVar()
#black radio button
self._who_goes_first_radiobutton = ttk.Radiobutton(
self.root_window,
text = 'Black',
variable = self.who_goes_first,
value = 'B')
self._who_goes_first_radiobutton.grid(row=0, column=1)
#white radio button
self._who_goes_first_radiobutton = ttk.Radiobutton(
self.root_window,
text = 'White',
variable = self.who_goes_first,
value = 'W')
self._who_goes_first_radiobutton.grid(row=1, column=1)
def start(self) -> None:
self.root_window.mainloop()
if __name__ == '__main__':
game = Test()
game.start()