搅拌器中的材料故障

Question

我用Tkinter的一些按钮制作了一个简单的窗口。开始时一个按钮处于禁用状态，但是我想在按下另一个按钮后再次变为正常状态。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

必须使用<buttonname>.config(state=STATE)命令，与状态之一：

• NORMAL（默认）
• ACTIVE
• 禁用

Source我把创造的自由编辑你的代码来测试它，它确实有效，请看下面的内容！

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()