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TkinterScrollbar

The scrollbar widget is used to scroll down the content of the other widgets like listbox, text, and canvas. However, we can also create the horizontal scrollbars to the Entry widget.

The syntax to use the Scrollbar widget is given below.

Syntax

  1. w = Scrollbar(top, options)   

A list of possible options is given below.

SN Option Description
1 activebackground The background color of the widget when it has the focus.
2 bg The background color of the widget.
3 bd The border width of the widget.
4 command It can be set to the procedure associated with the list which can be called each time when the scrollbar is moved.
5 cursor The mouse pointer is changed to the cursor type set to this option which can be an arrow, dot, etc.
6 elementborderwidth It represents the border width around the arrow heads and slider. The default value is -1.
7 Highlightbackground The focus highlighcolor when the widget doesn't have the focus.
8 highlighcolor The focus highlighcolor when the widget has the focus.
9 highlightthickness It represents the thickness of the focus highlight.
10 jump It 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.
11 orient It can be set to HORIZONTAL or VERTICAL depending upon the orientation of the scrollbar.
12 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.
13 repeatinterval The default value of the repeat interval is 100.
14 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.
15 troughcolor It represents the color of the trough.
16 width It represents the width of the scrollbar.

Methods

The widget provides the following methods.

SN Method Description
1 get() It returns the two numbers a and b which represents the current position of the scrollbar.
2 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.

Example

  1. from tkinter import *  
  2.   
  3. top = Tk()  
  4. sb = Scrollbar(top)  
  5. sb.pack(side = RIGHT, fill = Y)  
  6.   
  7. mylist = Listbox(top, yscrollcommand = sb.set )  
  8.   
  9. for line in range(30):  
  10.     mylist.insert(END, "Number " + str(line))  
  11.   
  12. mylist.pack( side = LEFT )  
  13. sb.config( command = mylist.yview )  
  14.   
  15. mainloop()  

Output:


Python Tkinter Scrollbar
Python Tkinter Scrollbar



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