I want to make a toolbar and a button at the same time in the same window but It won't work. I tried everything but I cannot find anything. Can I do that in tkinter. If I can't can you guys give some other things to make that happen.
`from tkinter import *
from tkinter import messagebox
from tkinter import Tk, Frame, Menu
def call_me():
    answer = messagebox.askyesnocancel("exit", "Do you really want to exit")
    if(answer):
            root.quit()
class Example(Frame):
    def __init__(self):
        super().__init__()
        self.initUI()
    def initUI(self):
        self.master.title("Simple menu")
        menubar = Menu(self.master)
        self.master.config(menu=menubar)
        fileMenu = Menu(menubar)
        fileMenu.add_command(label="Exit", command=self.onExit)
        menubar.add_cascade(label="File", menu=fileMenu)
    def onExit(self):
        self.quit()
def main():
    root = Tk()
    root.geometry("250x150+300+300")
    app = Example()
    root.mainloop()
if __name__ == '__main__':
    main()
root = Tk()
b = Button(root, text="message", command=call_me)
b.pack()
root.geometry("400x400+120+120")
root.mainloop()
`
when i run this code it opens a window with a button. when i click on that button it should exit but it opens a whole new window with a toolbor in it.