如何使用 tkinter 更改按钮颜色 [英] How to change button color with tkinter

问题描述

我不断收到以下错误:AttributeError: 'NoneType' 对象没有属性 'configure'

I keep getting the following error: AttributeError: 'NoneType' object has no attribute 'configure'

# create color button
self.button = Button(self,
                     text = "Click Me",
                     command = self.color_change,
                     bg = "blue"
                    ).grid(row = 2, column = 2, sticky = W)

def color_change(self):
    """Changes the button's color"""

    self.button.configure(bg = "red")

推荐答案

当您执行 self.button = Button(...).grid(...) 时，会分配给 self.button 是 grid() 命令的结果，不是对创建的 Button 对象的引用.

When you do self.button = Button(...).grid(...), what gets assigned to self.button is the result of the grid() command, not a reference to the Button object created.

您需要在打包/网格化之前分配您的 self.button 变量.它应该看起来像这样:

You need to assign your self.button variable before packing/griding it. It should look something like this:

self.button = Button(self,text="Click Me",command=self.color_change,bg="blue")
self.button.grid(row = 2, column = 2, sticky = W)

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