import customtkinter app = customtkinter.CTk() app.geometry("1200x1000") app.grid_rowconfigure(0, weight=1) app.grid_columnconfigure((0, 1), weight=1) frame_1 = customtkinter.CTkFrame(app) frame_1.grid(row=0, column=0, sticky="nsew", padx=10, pady=10) frame_2 = customtkinter.CTkFrame(app) frame_2.grid(row=0, column=1, sticky="nsew", padx=10, pady=10) def set_scaling(scaling): customtkinter.set_widget_scaling(scaling) scaling_button = customtkinter.CTkSegmentedButton(frame_1, values=[0.8, 0.9, 1.0, 1.1, 1.2, 1.3, 1.5, 2.0], command=set_scaling) scaling_button.pack(pady=(2, 10)) b = customtkinter.CTkButton(frame_1, text="single name", font=("Times", )) b.pack(pady=2) b = customtkinter.CTkButton(frame_1, text="name with size", font=("Times", 18)) b.pack(pady=2) b = customtkinter.CTkButton(frame_1, text="name with negative size", font=("Times", -18)) b.pack(pady=2) b = customtkinter.CTkButton(frame_1, text="extra keywords", font=("Times", -18, "bold italic underline overstrike")) b.pack(pady=2) b = customtkinter.CTkButton(frame_1, text="object default") b.pack(pady=(10, 2)) b = customtkinter.CTkButton(frame_1, text="object single name", font=customtkinter.CTkFont("Times")) b.pack(pady=2) b = customtkinter.CTkButton(frame_1, text="object with name and size", font=customtkinter.CTkFont("Times", 18)) b.pack(pady=2) b = customtkinter.CTkButton(frame_1, text="object with name and negative size", font=customtkinter.CTkFont("Times", -18)) b.pack(pady=2) b = customtkinter.CTkButton(frame_1, text="object with extra keywords", font=customtkinter.CTkFont("Times", -18, weight="bold", slant="italic", underline=True, overstrike=True)) b.pack(pady=2) b1 = customtkinter.CTkButton(frame_1, text="object default modified") b1.pack(pady=(10, 2)) b1.cget("font").configure(size=9) print("test_font.py:", b1.cget("font").cget("size"), b1.cget("font").cget("family")) b2 = customtkinter.CTkButton(frame_1, text="object default overridden") b2.pack(pady=10) b2.configure(font=customtkinter.CTkFont(family="Times")) label_font = customtkinter.CTkFont(size=5) for i in range(30): l = customtkinter.CTkLabel(frame_2, font=label_font, height=0) l.grid(row=i, column=0, pady=1) b = customtkinter.CTkButton(frame_2, font=label_font, height=5) b.grid(row=i, column=1, pady=1) c = customtkinter.CTkCheckBox(frame_2, font=label_font) c.grid(row=i, column=2, pady=1) c = customtkinter.CTkComboBox(frame_2, font=label_font, dropdown_font=label_font, height=15) c.grid(row=i, column=3, pady=1) e = customtkinter.CTkEntry(frame_2, font=label_font, height=15, placeholder_text="testtest") e.grid(row=i, column=4, pady=1) o = customtkinter.CTkOptionMenu(frame_2, font=label_font, height=15, width=50) o.grid(row=i, column=5, pady=1) r = customtkinter.CTkRadioButton(frame_2, font=label_font, height=15, width=50) r.grid(row=i, column=6, pady=1) s = customtkinter.CTkSwitch(frame_2, font=label_font, height=15, width=50) s.grid(row=i, column=7, pady=1) frame_2.grid_columnconfigure((0, 1, 2, 3, 4), weight=1) def change_font(): import time t1 = time.perf_counter() label_font.configure(size=10, overstrike=True) t2 = time.perf_counter() print("change_font:", (t2-t1)*1000, "ms") app.after(3000, change_font) app.after(6000, lambda: label_font.configure(size=8, overstrike=False)) app.mainloop()