from tkinter import *
import tkinter.messagebox
import threading
 
 
def getInput(title, message):
    def return_callback(event):
        print('quit...')
        root.quit()
    def close_callback():
        tkinter.messagebox.showinfo('message', 'no click...')
    root = Tk(className=title)
    root.wm_attributes('-topmost', 1)
    screenwidth, screenheight = root.maxsize()
    width = 300
    height = 100
    size = '%dx%d+%d+%d' % (width, height, (screenwidth - width)/2, (screenheight - height)/2)
    root.geometry(size)
    root.resizable(0, 0)
    lable = Label(root, height=2)
    lable['text'] = message
    lable.pack()
    entry = Entry(root)
    entry.bind('<Return>', return_callback)
    entry.pack()
    entry.focus_set()
    root.protocol("WM_DELETE_WINDOW", close_callback)
    root.mainloop()
    str = entry.get()
    root.destroy()
    return str
    
def test(i):
    x = getInput('fsf',i)
    print(x)
    
for i in range(0,3):
    threading.Thread(target=test,args=[i,]).start()