Checkbuttons always come up as black boxes regardless of the state

[deanhystad]

state does not do what you think it does. state is used for styling a ttk widget. You use "selected" in combination with "state" to specify how a widget should appear when selected.

The way to get and set the value of ttk.Checkbutton is use tkinter variables.

from tkinter import *
from tkinter import ttk

mw = Tk()
mw.geometry('700x300+400+200')
frame3 = Frame(mw)
framebot = Frame(mw)
frame3.pack(side=TOP,fill=X)
framebot.pack(side=BOTTOM,fill=X)
 
w3 = Label(frame3, text="Checkbuttons: ",font=("Times",16)).grid(row=0,column=0)
check_buttons = []
for i in range(1, 7):
    value = BooleanVar()
    button = ttk.Checkbutton(frame3, text=str(i), variable=value)
    check_buttons.append(value)
    value.set(i % 2 == 0)
    button.grid(row=i,column=0) 
mw.mainloop()