tkinter 按钮文字颜色不变

Question

The button text color is blue on creation, once it is clicked the button text color should change to red color as per the code. But on clicking the color is not changing

from tkinter import Button,Tk,Frame,DISABLED,Label
def on_click(button_id):
      btn[button_id].configure(text='clicked',state=DISABLED,fg ="red")

window = Tk()
frame = Frame(window)
frame2 = Frame(window)
frame2.pack()
frame.pack()
btn=[]
lbl=Label(frame2,text="Hello there")
lbl.pack()
for i in range(0,5):
    b=Button(frame,text="hello!!", fg="blue",font='sans 8 bold',command = lambda         
       button_id=i: on_click(button_id),width = 4, relief = "groove")
    b.grid(row=i,column=0)
    btn.append(b)

window.mainloop()

Answer 1

You need to remove state=DISABLED from your on_click function to make this work

def on_click(button_id):
      btn[button_id].configure(text='clicked', fg ="red")