import tkinter as tk

def button_click():
  dlg = tk.Toplevel(master=window)

  tk.Button(dlg,text="Dismiss",command=dlg.destroy).pack()

  dlg.transient(window)    # only one window in the task bar
  dlg.grab_set()           # modal
  #window.wait_window(dlg) # why?

window = tk.Tk()

tk.Button(window,text="Click Me",command=button_click).pack()

window.mainloop()

我已经看到了一些使用wait_window()来创建模态对话框的例子.所以我不确定是否需要该函数来创建模态对话框.

我正在使用Python 3.5.