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Hello, Pythonistas Welcome Back. Today we will see how to make a fully functional modern Scroll bar in CustomTkinter.

We will use the CTkScrollbar Widget.

How Does CTkScrollbar Look?

Basic Code

This is how you can make a simple Scroll Bar in CustomTkinter (or CTk).

from customtkinter import CTk, CTkTextbox, CTkScrollbar
class App(CTk):
    def __init__(self):
        super().__init__()

        # Create a TextBox and disable its default scrollbar
        self.textbox = CTkTextbox(self, activate_scrollbars=False)
        self.textbox.grid(row=0, column=0)

        # create CTk scrollbar and connect it to the textbox
        self.scrollbar = CTkScrollbar(self, command=self.textbox.yview)
        self.scrollbar.grid(row=0, column=1)

        # connect textbox scroll event to CTk scrollbar
        self.textbox.configure(yscrollcommand=self.scrollbar.set)
app = App()
app.mainloop()

Like any other widget in CTk, it is created and pushed to the window.

It cannot be used alone you need another widget like a text box. As the textbox has a default scrollbar we first need to disable it.

Next, we need to connect this scrollbar to the text box’s scroll event. That’s it!

It takes a compulsory argument master. This will specify where it will stay.

Why Do We Need An External Scroll Bar?

Well, it’s for those who want every nitty-gritty under their control.

It’s used to give a custom look to the scrollbar. That’s it.

All Configurations

I am not going to give any challenges at the end of such articles as they are just for your quick reference.

Note I haven’t included all the methods and attributes. You can always get that on the documentation.