""" Example Programm das zum Nachschlagen dient """ import tkinter import customtkinter customtkinter.set_appearance_mode("System") # Modes: system (default), light, dark customtkinter.set_default_color_theme("blue") # Themes: blue (default), dark-blue, green app = customtkinter.CTk() # create CTk window like you do with the Tk window app.geometry("400x240") def button_function(): print("button pressed") # Use CTkButton instead of tkinter Button button = customtkinter.CTkButton(master=app, text="CTkButton", command=button_function) button.place(relx=0.5, rely=0.5, anchor=tkinter.CENTER) app.mainloop()