To get a better picture of how a Ttk widget is built, open a shell in IDLE and import tkinter, ttk, and pprint:
>>> import tkinter as tk >>> from tkinter import ttk >>> from pprint import pprint
Now, create a root window, Combobox, and Style object:
>>> root = tk.Tk() >>> cb = ttk.Combobox(root) >>> cb.pack() >>> style = ttk.Style()
The Style object is, perhaps, slightly misnamed; it doesn't point to a single style, but rather gives us a handle to examine and alter the styles, layouts, and maps for the current theme.
In order to examine our Combobox, we'll first get its stylename using the winfo_class() method:
>>> cb_stylename = cb.winfo_class() >>> print(cb_stylename) TCombobox
We can then inspect the layout of the ...