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( "w3wiki" , 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 :