Tkinter - how to make a "Toplevel" window non-sizeable?

[Thomas Lane]

Does anyone out there know how to make a Toplevel window non-sizeable?
I'm trying to make a custom dialog box, but I don't want the user to be
able to resize it. Is there some other widget that is more appropriate
than a Toplevel widget for creating a dialog window, or is there some
attribute I can set that turns off the ability to resize it? As usual,
any help would be greatly appreciated.

Thomas Lane
Parlant Technology
tom at parlant.com