如何通过绑定类来使按钮更改颜色

问题描述

我尝试使用bind绑定鼠标单击以根据按钮的前景和背景更改颜色

from tkinter import *


class Clicks():
    def __init__(self,master):
        frame=Frame(master)
        frame.pack()

        #trying to bind the mouse clicks to change the color of the button

        self.button1= Button(frame,text="Click Me!",fg='red',bg='black')

        self.button1.bind("<Button-1>",fg='black')
        self.button1.bind("<Button-3>",bg='red')
        self.button1.grid(row = 0,column = 1,sticky = W)


root = Tk()
b = Clicks(root)
root.mainloop()

TypeError：bind（）得到了意外的关键字参数'fg'

解决方法

请检查代码段。您可以在这里使用2种方法。

首先，您可以使用bind函数lambda

from tkinter import *
class Clicks():
    def __init__(self,master):
        frame=Frame(master)
        frame.pack()
        self.button1= Button(frame,text="Click Me!",fg='red',bg='black')
        self.button1.bind("<Button-1>",lambda event,b=self.button1: b.configure(bg="green",fg="blue"))
        self.button1.grid(row = 0,column = 1,sticky = W)
root = Tk()
b = Clicks(root)
root.mainloop()

第二，您可以通过传递command来访问功能

from tkinter import *
class Clicks():
    def __init__(self,command=self.color,bg='black')
        self.button1.grid(row = 0,sticky = W)
    def color(self):
        self.button1.configure(bg = "green",fg="blue")
root = Tk()
b = Clicks(root)
root.mainloop()