In this article we will see how we can get the vertical scroll bar of the QListWidget. QListWidget is a convenience class that provides a list view with a classic item-based interface for adding and removing items. QListWidget uses an internal model to manage each QListWidgetItem in the list. Setting vertical scroll bar replaces the existing vertical scroll bar with scrollBar, and sets all the former scroll bar’s slider properties on the new scroll bar. The former scroll bar is then deleted. It can be set with the help of setVerticalScrollBar method.
In order to do this we will use verticalScrollBar method with the list widget object. Syntax : list_widget.verticalScrollBar() Argument : It takes no argument Return : It returns QScrollBar object
Below is the implementation
# importing libraries from PyQt5.QtWidgets import *
from PyQt5 import QtCore, QtGui
from PyQt5.QtGui import *
from PyQt5.QtCore import *
import sys
class Window(QMainWindow):
def __init__( self ):
super ().__init__()
# setting title
self .setWindowTitle("Python ")
# setting geometry
self .setGeometry( 100 , 100 , 500 , 400 )
# calling method
self .UiComponents()
# showing all the widgets
self .show()
# method for components
def UiComponents( self ):
# creating a QListWidget
list_widget = QListWidget( self )
# setting geometry to it
list_widget.setGeometry( 50 , 70 , 150 , 80 )
# list widget items
item1 = QListWidgetItem("PyQt5 Geeks for Geeks")
item2 = QListWidgetItem("B")
item3 = QListWidgetItem("C")
item4 = QListWidgetItem("D")
# adding items to the list widget
list_widget.addItem(item1)
list_widget.addItem(item2)
list_widget.addItem(item3)
list_widget.addItem(item4)
# scroll bar
scroll_bar = QScrollBar( self )
# setting style sheet to the scroll bar
scroll_bar.setStyleSheet("background : lightgreen;")
# setting vertical scroll bar to it
list_widget.setVerticalScrollBar(scroll_bar)
# creating a label
label = QLabel("GeeksforGeeks", self )
# setting geometry to the label
label.setGeometry( 230 , 80 , 280 , 80 )
# making label multi line
label.setWordWrap( True )
# getting vertical scroll bar
value = list_widget.verticalScrollBar()
# setting text to the label
label.setText("Vertical Scroll Bar : " + str (value))
# create pyqt5 app App = QApplication(sys.argv)
# create the instance of our Window window = Window()
# start the app sys.exit(App. exec ())
|
Output :