PyQt5 QDial – Range Changed Signal

In this article we will see how we get the range change signal of the QDial. This signal is emitted when the slider range has changed, by default the range of QDial is 0 to 99 although we can change this any time with the help of setRange method.

In order to do this we use rangeChanged method with the QDial object

Syntax : dial.rangeChanged.connect(method)

Argument : It takes method 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)

        # creating a label
        label = QLabel("GeeksforGeeks", self)

        # setting geometry to the label
        label.setGeometry(220, 125, 200, 60)

        # making label multiline
        label.setWordWrap(True)

        # range changed signal
        dial.rangeChanged.connect(lambda: label.setText("Range Change Signal Emitted"))

        # setting range of dial
        dial.setRange(0, 1000)

# create pyqt5 app
App = QApplication(sys.argv)

# create the instance of our Window
window = Window()

# start the app
sys.exit(App.exec())

Output :