In this article we will see how we can get the value of QScrollBar. QScrollBar is a control that enables the user to access parts of a document that is larger than the widget used to display it. Slider is the scroll-able object inside the bar. Value is basically depend upon the slider position, scroll bar value changes according to the position of the slider, value increases when slider goes down and decreases when slider moves up. It can be programmatically set with the help of setValue method.
In order to do this we will use value method with the scroll bar object.
Syntax : scroll.value()
Argument : It takes no argument
Return : It returns integer
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 ):
scroll = QScrollBar( self )
# setting geometry of the scroll bar
scroll.setGeometry( 100 , 50 , 30 , 200 )
# setting value of scroll bar
scroll.setValue( 25 )
# making its background color to green
scroll.setStyleSheet( "background : lightgrey;" )
# creating a label
label = QLabel( "GeeksforGeeks" , self )
# setting geometry to the label
label.setGeometry( 200 , 100 , 300 , 80 )
# making label multi line
label.setWordWrap( True )
# getting value of scroll bar
value = scroll.value()
# setting text to the label
label.setText( "Value : " + 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 :