向tkinter中的自定义圆形按钮添加文本

from tkinter import *

class CircleButton(Button):
    def __init__(self, master, text, radius, **kwargs):
        super().__init__(master, text=text, **kwargs)
        self.radius = radius

    def draw_circle(self):
        x0 = y0 = self.radius
        x1 = y1 = 2 * self.radius
        self.create_oval(x0, y0, x1, y1, fill=self["background"], outline=self["highlightbackground"])

    def pack(self, **kwargs):
        self.bind("<Configure>", lambda e: self.draw_circle())
        super().pack(**kwargs)

window = Tk()

button = CircleButton(window, text="Click me", radius=50, width=100, height=100, bg="blue", fg="white")
button.pack()

window.mainloop()