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TkEasyGUI Theme Guide

This document explains how to use themes and how to change theme-related defaults in TkEasyGUI.

Overview

TkEasyGUI uses ttk themes for modern widget rendering. You can switch themes at runtime using set_theme() or theme().

Default theme by platform:

  • macOS: aqua
  • Windows: vista
  • Linux/others: clam

Basic theme usage

Change theme with set_theme

import TkEasyGUI as eg

eg.set_theme("clam")
window = eg.Window("Theme sample", [[eg.Button("OK", use_ttk_buttons=True)]])
window.read()
window.close()

Alias: theme

theme() is an alias of set_theme().

import TkEasyGUI as eg

eg.theme("default")

List available themes

Use get_themes() to inspect themes available in your current Tk runtime.

import TkEasyGUI as eg

print(eg.get_themes())

Note:

  • get_themes() is the preferred API name.
  • get_tnemes() is still available as a backward-compatible alias.

Change button style behavior

Button can render with ttk.Button (modern) or tk.Button (classic).

  • use_ttk_buttons=True (default): use ttk.Button
  • use_ttk_buttons=False: use tk.Button
import TkEasyGUI as eg

layout = [
    [eg.Button("Modern", use_ttk_buttons=True)],
    [eg.Button("Classic", use_ttk_buttons=False)],
]
window = eg.Window("Buttons", layout)
window.read()
window.close()

Note:

  • If you set use_ttk_buttons=True, explicit button height settings are ignored.
  • This is a limitation of ttk.
  • If you need to control button height, use use_ttk_buttons=False.

How to customize defaults

Global theme default

If you want to change the default theme for your app, call set_theme() before creating windows.

import TkEasyGUI as eg

eg.set_theme("winnative")

Revert to old Windows look

If you want behavior close to older Windows appearance:

import TkEasyGUI as eg

eg.set_theme("vista")
layout = [[eg.Button("OK", use_ttk_buttons=False)]]
window = eg.Window("Legacy look", layout)
window.read()
window.close()

Recommended test scripts

After changing theme defaults, validate with:

python tests/file_viewer.py
python tests/theme/ttk_button.py
python tests/ui_test.py
python tests/many_buttons.py