In this article we will see how we can set the lower bound of QDial. Lower bound means the lowest value QDial can handle by default the minimum value is 0 although we can change it any time. With the lower bound we can make sure the number below the lower bound can be assigned. Setting lower bound will not affect the movement of the Qdial it will still able to move 360 degrees.
In order to do this we use setMinimum
method with the QDial object
Syntax : dial.setMinimum(n)
Argument : It takes integer as argument
Return : It returns None
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 QDial object
dial = QDial( self )
# setting geometry to the dial
dial.setGeometry( 100 , 100 , 100 , 100 )
# setting minimum value to the dial
dial.setMinimum( 50 )
# making notch visible
dial.setNotchesVisible( True )
# creating a label
label = QLabel( "GeeksforGeeks" , self )
# setting geometry to the label
label.setGeometry( 220 , 125 , 200 , 60 )
# making label multiline
label.setWordWrap( True )
# adding action to the dial
dial.valueChanged.connect( lambda : label.setText( "Value = " + str (dial.value())))
# create pyqt5 app App = QApplication(sys.argv)
# create the instance of our Window window = Window()
# start the app sys.exit(App. exec ())
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Output :