Tkinter 8.5 参考手册: a GUI for Python (五)11 窗口的名称

http://infohost.nmt.edu/tcc/help/pubs/tkinter/web/window-names.html

5.11. Window names

The term window describes a
rectangular area on the desktop.

A top-level or
root window is a window that
has an independent existence under the window
manager. It is decorated with the window manager's
decorations, and can be moved and resized
independently. Your application can use any number
of top-level windows.

The term “window” also applies to any
widget that is part of a top-level window.

Tkinter names all these windows using a hierarchical
window path name.

The root window's name is

'.'

.

Child windows have names of the form

'.
n
'

, where

n

[/code] is some integer
in string form. For example, a window named

'.135932060'

is a child of the root window
(

'.'

).

Child windows within child windows have names of the
form

'
p
.[code]n

'[/code] where

p

[/code] is the name of
the parent window and

n

[/code] is some
integer. For example, a window named

'.135932060.137304468'

has parent window

'.135932060'

, so it is a grandchild of
the root window.

The relative name of a window
is the part past the last

'.'

in the
path name. To continue the previous example, the
grandchild window has a relative name

'137304468'

.

To get the path name for a widget

w

[/code], use

str(
w
)

.

See also Section 26, “Universal widget methods” for methods you can
use to operate on window names, especially the

.winfo_name

,

.winfo_parent

, and

.winfo_pathname

methods.