Increasing Size of Tab Button in Tkinter Notebook

Question

How can you increase the size of the button used to access the tab?

I've tried adding padding, changing the font size, and editing height/width, but none of these affect the physical size of the button used to switch tabs.

sounds similar to https://stackoverflow.com/questions/36024635/changing-the-tab-sizes-of-a-notebook-widget-in-python-3 — Reedinationer, Feb 13 '19 at 23:28
When I tried to implement that, it changed the tabs rather than the tab buttons — jrixie, Feb 13 '19 at 23:31
*"it changed the tabs rather than the tab buttons"*: [Edit] your Question and explain in detail the difference between `tabs` and `tab buttons`? — stovfl, Feb 14 '19 at 08:02

score 2 · Accepted Answer · edited Nov 17 '22 at 13:33

Change the style like:

customed_style = ttk.Style()
customed_style.configure('Custom.TNotebook.Tab', padding=[12, 12], font=('Helvetica', 10))

Then use this style to your tab like:

tab_control = ttk.Notebook(self.master, style='Custom.TNotebook')

Here is a full example:

import tkinter as tk
from tkinter import ttk

class MainWindow:
    def __init__(self, master):
        self.master = master
        self.master.title("Large Tab Example")

        self.createTabs()

    def createTabs(self):
        self.tab_control = ttk.Notebook(self.master, style='Custom.TNotebook')

        self.tab_one = ttk.Frame(self.tab_control)
        self.tab_control.add(self.tab_one, text="Tab One")
        self.frame_one = ttk.Frame(self.tab_one)
        self.frame_one.grid(row=0, column=0, padx=16, pady=16, sticky='nesw')
        self.label_one = ttk.Label(self.frame_one, text="Tab One", font=('Helvetica', 24, 'bold'))
        self.label_one.grid(row=0, column=0, padx=16, pady=16, sticky='nesw')

        self.tab_two = ttk.Frame(self.tab_control)
        self.tab_control.add(self.tab_two, text="Tab Two")
        self.frame_two = ttk.Frame(self.tab_two)
        self.frame_two.grid(row=0, column=0, padx=16, pady=16, sticky='nesw')
        self.label_two = ttk.Label(self.frame_two, text="Tab Two", font=('Helvetica', 24, 'bold'))
        self.label_two.grid(row=0, column=0, padx=16, pady=16, sticky='nesw')

        self.tab_three = ttk.Frame(self.tab_control)
        self.tab_control.add(self.tab_three, text="Tab Three")
        self.frame_three = ttk.Frame(self.tab_three)
        self.frame_three.grid(row=0, column=0, padx=16, pady=16, sticky='nesw')
        self.label_three = ttk.Label(self.frame_three, text="Tab Three", font=('Helvetica', 24, 'bold'))
        self.label_three.grid(row=0, column=0, padx=16, pady=16, sticky='nesw')

        self.tab_control.grid(row=0, column=0, sticky='nesw', padx=4, pady=4)

def main():
    root = tk.Tk()

    customed_style = ttk.Style()
    customed_style.configure('Custom.TNotebook.Tab', padding=[12, 12], font=('Helvetica', 10))
    customed_style.configure('Custom.TNotebook', tabposition='wn')

    app = MainWindow(root)
    root.mainloop()

if __name__ == '__main__':
    main()

That worked perfectly. My problem was misunderstanding the difference between TNotebook.Tab and TNotebook in the Style. Thank you for the help! — jrixie, Feb 19 '19 at 01:39

Increasing Size of Tab Button in Tkinter Notebook

1 Answers1