Python，Tkinter-僅在選擇單選按鈕時啟用/禁用按鈕

所以這是我的代碼

root = Tk()

# 1st frame
frame_1 = LabelFrame(root)
frame_1.pack()

#var
var = IntVar()
var.set(0)
test = ['test1', 'test2', 'test3', 'test4']

# radio button
radio_1 = Radiobutton(frame_1, text = test[0], value = 1, variable = var)
radio_1.pack()
radio_2 = Radiobutton(frame_1, text = test[1], value = 2, variable = var)
radio_2.pack()
radio_3 = Radiobutton(frame_1, text = test[2], value = 3, variable = var)
radio_3.pack()

# 2nd frame
frame_2 = LabelFrame(root)
frame_2.pack()

# buttons
button_1 = Button(frame_2, text =  test[0], state = DISABLED)
button_1.pack()
button_2 = Button(frame_2, text =  test[1], state = DISABLED)
button_2.pack()
button_3 = Button(frame_2, text =  test[2], state = DISABLED)
button_3.pack()
button_4 = Button(frame_2, text =  test[3], state = DISABLED)
button_4.pack()

root.mainloop()

我要做的是在選擇單選按鈕時啟用按鈕。這是我嘗試過的。

def changeState():
    if var.get() != 0:
       button_1['state'] = NORMAL
       button_2['state'] = NORMAL
       button_3['state'] = NORMAL
       button_4['state'] = NORMAL

changeState()

我相信這只是最初設定它，當我選擇一個單選按鈕或更改它時，它不會更新。我想我可以在按鈕內使用命令，但不明白如何去做。

uj5u.com熱心網友回復：

我添加了四個函式。然后在 中Radiobutton，我command=changeStat為每個添加了 e Radiobuuton。

嘗試這個：

from tkinter import *

root = Tk()

# 1st frame
frame_1 = LabelFrame(root)
frame_1.pack()

#var
var = IntVar()
var.set(0)
test = ['test1', 'test2', 'test3', 'test4']

def changeState1():
    if var.get() !=0:
       button_1['state'] = NORMAL
       button_2['state'] = DISABLED
       button_3['state'] = DISABLED
       button_4['state'] = DISABLED

def changeState2():
    if var.get() !=0:
       button_1['state'] = DISABLED
       button_2['state'] = NORMAL
       button_3['state'] = DISABLED
       button_4['state'] = DISABLED       


def changeState3():
    if var.get() !=0:
       button_1['state'] = DISABLED
       button_2['state'] = DISABLED
       button_3['state'] = NORMAL
       button_4['state'] = DISABLED

def changeState4():
    if var.get() !=0:
       button_1['state'] = DISABLED
       button_2['state'] = DISABLED
       button_3['state'] = DISABLED
       button_4['state'] = NORMAL      
       
# radio button
radio_1 = Radiobutton(frame_1, text = test[0], value = 1,command=changeState1, variable = var)
radio_1.pack()
radio_2 = Radiobutton(frame_1, text = test[1], value = 2, command=changeState2, variable = var)
radio_2.pack()
radio_3 = Radiobutton(frame_1, text = test[2], value = 3,command=changeState3, variable = var)
radio_3.pack()
radio_4= Radiobutton(frame_1, text = test[2], value = 3,command=changeState4, variable = var)
radio_4.pack()

# 2nd frame
frame_2 = LabelFrame(root)
frame_2.pack()

# buttons
button_1 = Button(frame_2, text =  test[0],  state = DISABLED)
button_1.pack()
button_2 = Button(frame_2, text =  test[1], state = DISABLED)
button_2.pack()
button_3 = Button(frame_2, text =  test[2], state = DISABLED)
button_3.pack()
button_4 = Button(frame_2, text =  test[3], state = DISABLED)
button_4.pack()
  
root.mainloop()
changeState()

標籤：Python tkinter 按钮 单选按钮

上一篇：如何制作一個按鈕，允許我將兩個變數發送到Tkinter中的同一個函式中？

下一篇：Python/TKinter-如何按名稱生成選定小部件的串列