Anyone has idea about how to change certain CTK widget fonts?

[Gasiro]

I successfully changed the button fonts / label fonts, but have no idea how to change the font of 1.[CTkTabview tab font] and [CTkEntry placeholder_text font].
Anyone has any hint?

[dipeshSam]

@Gasiro

There are two way to do so:

1. Set global font (Recommended)
2. Change font of Tabview's segmented button

We can change font of all the widgets just using one statement of ThemeManager. Otherwise, we can iterate through buttons, and can change their fonts individually.

Sample code for way first:

from customtkinter import (
    CTk, 
    CTkTabview,
    CTkEntry,
    CTkFont
)

from customtkinter import ThemeManager

if __name__ == "__main__":
    app = CTk()
    
    # This will simply change font of ALL THE WIDGETS.
    ThemeManager.theme["CTkFont"] = CTkFont("Impact", 20)
    
    tabs = CTkTabview(app)
    tabs.add("Tab1")
    tabs.add("Tab2")
    tabs.add("Tab3")
    tabs.pack()
    
    entry = CTkEntry(app, placeholder_text="Write your comment...")
    entry.pack()

    app.mainloop()

Sample code if you only want specific widget to change:

from customtkinter import (
    CTk, 
    CTkTabview,
    CTkEntry,
    CTkFont
)

def apply_font_to_tabs(tabs: CTkTabview, font: CTkFont | tuple):
    """Applies given `font` either tuple or `CTkFont` to tab names."""
    tabs._segmented_button.configure(font=font)

if __name__ == "__main__":
    app = CTk()

    tabs = CTkTabview(app)
    tabs.add("Tab1")
    tabs.add("Tab2")
    tabs.add("Tab3")
    tabs.pack()

    # Use the function to iterate through.
    apply_font_to_tabs(tabs, CTkFont("impact", 15))
    
    # By default, font applies to both placeholder text and entry text.
    entry = CTkEntry(app, placeholder_text="Write your comments...", font=CTkFont("Impact", 15))
    entry.pack()

    app.mainloop()

Both will produce output like:

Hope, it will be helpful.
Regards

[Gasiro]

Thank you so much Dipesh. It looks much better now!

[dipeshSam]

Yeah, that's amazing!
Keep it up.