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PyQt5 QDial – Setting Lower Bound of it

  • Last Updated : 07 Jul, 2020

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())

Output :

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