Tkinter GUI Application Development Blueprints, Second Edition - Second Edition

Adding themes

You may recall that, while defining the Themes menu, we defined a color scheme dictionary containing the name and hexadecimal color codes as a key-value pair, as follows:

color_schemes = {'Default': '#000000.#FFFFFF','Greygarious':'#83406A.#D1D4D1','Aquamarine': '#5B8340.#D1E7E0','Bold Beige': '#4B4620.#FFF0E1','Cobalt Blue':'#ffffBB.#3333aa','Olive Green': '#D1E7E0.#5B8340','Night Mode': '#FFFFFF.#000000',}

The theme choice menu has already been defined. Let's add a callback command to handle the selected menu (2.12.py):

themes_menu.add_radiobutton(label=k, variable=theme_choice, command=change_theme).

Finally, let's define the change_theme function to handle the changing of themes, as follows:

def change_theme(event=None): ...