Tk's default Toplevel - counterintuitive

[Stuart Reynolds]

Does anyone know how to tell if Tk has already instaniated a Toplevel
window? I want to be able to open several Toplevel windows in any order.

Something like:


def makeNewWindow():
   if defaulttoplevel in use:
      mstr=Toplevel
   else:
      mstr=None                #Uses the default Toplevel

   f = Frame(master=mstr)
   ...



Cheers,

Stuart

PS. Wouldn't it have made more sense if using None as a window's master
caused a new Toplevel window to be created rather than the situation now
where you end up sticking items all in the same window. The following
gives 1 window containing 3 buttons (doh!):

---
from Tkinter import *

def makeNewWindow():
    f = Frame(master=None)
    b=Button(master=f, text="Hello")
    b.pack(side=LEFT, fill=BOTH)
    Pack.config(f)

makeNewWindow()
makeNewWindow()
makeNewWindow()

---

A naive alternative is:
---
def makeNewWindow():
    f = Frame( master=Toplevel() )
    ...as before
----

Which gives you three separate windows but a random extra empty Toplevel
window (the mystery default `None' toplevel)... DohDoh!