In this article we will see how we can update the spin box if any changes occur, in traditional building of GUI(Graphical User Interface) every time we make changes in the widget we have to update the widget so that user can see the new updated spin box. For example in PyGame when we make change we have to refresh the screen or update the screen so that new event can be displayed. But in PyQt5 spin box automatically update it self every time any change occur to it although we can call the update method to update it explicitly. Note : It is unless when spin box updates are disabled or it is hidden In order to do so we use update method.
Syntax : spin_box.update() Argument : It takes no argument Action performed : It updates the spin box
Below is the implementation
Python3
# importing librariesfrom PyQt5.QtWidgets import *from PyQt5 import QtCore, QtGuifrom PyQt5.QtGui import *from PyQt5.QtCore import *import sysclass 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 widgets def UiComponents(self): # creating spin box self.spin = QSpinBox(self) # setting geometry to spin box self.spin.setGeometry(100, 100, 250, 40) # setting prefix to spin self.spin.setPrefix("Prefix ") # setting suffix to spin self.spin.setSuffix(" Suffix") # making updates on spin box self.spin.update()# create pyqt5 appApp = QApplication(sys.argv)# create the instance of our Windowwindow = Window()# start the appsys.exit(App.exec()) |
Output :
