In this article we will see how we can access the prefix of the spin box, prefix is basically the text which is inserted before the value of spin box, prefix remain constant for each value of spin box i.e it is not editable. By default no prefix is set to the spin box we use setPrefix method to set the prefix. In order to access the prefix we will use prefix method.
Syntax : spin_box.prefix() Argument : It takes no argument Return : It returns string
Implementation steps : 1. Create a spin box 2. Add prefix to the spin box 3. Create label to show the prefix 4. Access the prefix with the help of prefix method 5. Show the prefix in label using setText method 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, 150, 40) # adding prefix in combo box self.spin.setPrefix("Value of x : ") # creating label to show the prefix label = QLabel(self) # setting geometry of label label.setGeometry(100, 160, 200, 30) # getting prefix of spin box text = self.spin.prefix() # showing prefix through label label.setText("Prefix = \" " + text + "\"")# create pyqt5 appApp = QApplication(sys.argv)# create the instance of our Windowwindow = Window()# start the appsys.exit(App.exec()) |
Output : 
