In this article we will see how we can get the destroyed signal from the QCalendarWidget. Destroyed signal is emitted immediately before the QCalendarWidget is destroyed, after any instances of QPointer have been notified, and cannot be blocked. All the objects’ children are destroyed immediately after this signal is emitted.
In order to do this we will use
destroyedmethod with the QCalendarWidget object.Syntax : calender.destroyed.connect(lambda: print(“Destroyed Signal”))
Argument : It takes method as argument
Action Performed : It will print the message whenever activated signal get emitted
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, 600, 400) # calling method self.UiComponents() # showing all the widgets self.show() # method for components def UiComponents(self): # creating a QCalendarWidget object calender = QCalendarWidget(self) # setting geometry to the calender calender.setGeometry(50, 50, 400, 250) # creating a label label = QLabel(self) # setting geometry to the label label.setGeometry(100, 280, 250, 60) # making label multi line label.setWordWrap(True) # text text = "Destroyed Signal Emitted " # getting the destroyed signal and # when receives the signal printing the message calender.destroyed.connect(lambda: label.setText(text)) # creating push button push = QPushButton("Destroy ", self) # adding action to it push.clicked.connect(lambda: calender.deleteLater()) # 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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