cpython/Demo/tkinter/guido/listtree.py

# List a remote app's widget tree (names and classes only)

import sys

from tkinter import *

def listtree(master, app):
    list = Listbox(master, name='list')
    list.pack(expand=1, fill=BOTH)
    listnodes(list, app, '.', 0)
    return list

def listnodes(list, app, widget, level):
    klass = list.send(app, 'winfo', 'class', widget)
    list.insert(END, '%s (%s)' % (widget, klass))
    children = list.tk.splitlist(
            list.send(app, 'winfo', 'children', widget))
    for c in children:
        listnodes(list, app, c, level+1)

def main():
    if not sys.argv[1:]:
        sys.stderr.write('Usage: listtree appname\n')
        sys.exit(2)
    app = sys.argv[1]
    tk = Tk()
    tk.minsize(1, 1)
    f = Frame(tk, name='f')
    f.pack(expand=1, fill=BOTH)
    list = listtree(f, app)
    tk.mainloop()

if __name__ == '__main__':
    main()