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Python Tkinter Scrollbar

by maxguy71

In this article we show you how to add scrollbars to tour Tkinter gui.

You can create a horizontal or vertical scrollbars

Syntax

w = Scrollbar(top, options)

This is a list of possible options.

Option Description
activebackground The background color of the widget when it has the focus.
bg The background color of the widget.
bd The border width of the widget.
command It can be set to the procedure associated with the list which can be called each time when the scrollbar is moved.
cursor The mouse pointer is changed to the cursor type set to this option which can be an arrow, dot, etc.
elementborderwidth It represents the border width around the arrow heads and slider. The default value is -1.
highlightbackground The color of the focus highlight when the scrollbar does not have focus.
highlightcolor The color of the focus highlight when the scrollbar has the focus.
highlightthickness This represents the thickness of the focus highlight.
jump This is used to control the behavior of the scroll jump. If it set to 1, then the callback is called when the user releases the mouse button.
orient This can be set to HORIZONTAL or VERTICAL depending upon the orientation of the scrollbar.
repeatdelay This option tells the duration up to which the button is to be pressed before the slider starts moving in that direction repeatedly. The default is 300 ms.
repeatinterval The default value of the repeat interval is 100.
takefocus We can tab the focus through this widget by default. We can set this option to 0 if we don’t want this behavior.
troughcolor This represents the color of the trough.
width This represents the width of the scrollbar.

Methods

The widget provides the following methods.

Method Description
get() It returns the two numbers a and b which represents the current position of the scrollbar.
set(first, last) It is used to connect the scrollbar to the other widget w. The yscrollcommand or xscrollcommand of the other widget to this method.

 

Examples

Here is a standard description

from tkinter import *
  
root = Tk()
root.geometry("150x200")
   
w = Label(root, text ='maxpython', font = "50") 
  
w.pack()
   
scroll_bar = Scrollbar(root)
  
scroll_bar.pack( side = RIGHT, fill = Y )
   
mylist = Listbox(root, yscrollcommand = scroll_bar.set )
   
for line in range(1, 26):
    mylist.insert(END, "Entry number " + str(line))
  
mylist.pack( side = LEFT, fill = BOTH )
  
scroll_bar.config( command = mylist.yview )
   
root.mainloop()

This will display something like this

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