搅拌机中的奇怪物料故障

Question

我在Tkinter中使用一些按钮制作了一个简单的窗口。 一开始，一个按钮处于禁用状态，但是我希望在按下另一个按钮后再次将其变为正常状态。 那么如何在代码运行时更改按钮的属性？

from tkinter import *

def com():
    print ('activate')

def win():
    window = Tk()
    window.geometry ('500x500')
    b1 = Button(text = 'Disabled', pady = '10', padx = '10', state = DISABLED)
    b1.place(x=100, y=10)
    b2 = Button(text = 'activate', pady = '10', padx = '10', command=com)
    b2.place(x=10, y=10)
    window.mainloop

win()  

Answer 1

您必须使用<buttonname>.config(state=STATE)命令，其中STATE可以是：

• 正常（默认）
• 活性
• 禁用

来源我随意创建编辑代码来测试它，并且它确实有效，请参见下文！

from Tkinter import *

def com1():
    print ('activate')
    b1.config(state = ACTIVE)
    b2.config(state = DISABLED) #toggles the buttons

def com2():
    print('de-activate')
    b1.config(state = DISABLED)
    b2.config(state = ACTIVE) #toggles the buttons

def win():
    global b1
    global b2 #This is to allow passing b1 and b2 to com1 and com2, but may not be the most "efficient" way to do this...
    window = Tk()
    window.geometry ('500x500')
    b1 = Button(text = 'Disabled', pady = '10', padx = '10', state = DISABLED, command = com2) #command com2 added here
    b1.place(x = 100, y = 10)
    b2 = Button(text = 'activate', pady = '10', padx = '10', command = com1) #com changed to com1
    b2.place(x = 10, y = 10)

    window.mainloop()

win()