Tkinter使用问题

[grafu]

from multiprocessing import Process
from Tkinter import *

root = Tk()
t = ""
def sniff():
global t
t = "hello"
root.event_generate("myMessage", when = "tail")

def loop(event):
global t
p = Process(target = sniff)
p.start()
root.bind("myMessage", lambda evt: text.insert("insert", t))

entry = Entry(root)
text = Text(root)
#entry.bind('<Key>', loop)
entry.pack()
text.pack()

mainloop()




希望能在这个对话框中输出hello，但是请问应该怎么写啊。。