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我想通過單選按鈕更新TopLevel小部件的背景顏色。 我想要的是當用戶改變單選按鈕時背景顏色會改變。 目前,該程序打開一個新窗口,單選按鈕。背景顏色根本不會改變。更新Toplevel小部件中的背景顏色
from tkinter import *
class Example:
def newWindow(self):
top = Toplevel()
v = IntVar()
v.set(-1)
self.aRadioButton = Radiobutton(top, text="Blue",variable = v, value = 0)
self.aRadioButton.grid(row=1, column=1)
self.aRadioButton = Radiobutton(top, text="Red",variable = v, value = 1)
self.aRadioButton.grid(row=1, column=0)
if v == 0:
top.configure(bg="Blue")
elif v == 1:
top.configure(bg="Red")
def __init__(self, master):
frame = Frame(master, width = 50, height = 50)
frame.grid()
self.aLabel = Label(frame, text = "New window bg colour").grid(row=0)
self.aButton = Button(frame, text="To new window", command=self.newWindow)
self.aButton.grid(row=1)
root = Tk()
app = Example(root)
root.mainloop()
必須有某種事件,當您更改單選按鈕時......應該改變顏色。 'newWindow'只被調用一次。 – davekr