QSpinBox is a PyQt5 widget which presents the user with a textbox that displays an integer with up/down button on its right. The value in the textbox increases/decreases if the up/down button is pressed. The default minimum value is 0 and maximum value is 99.
Example :
A window having a Spinbox, when value changes a message will appear displaying the current value.
Steps for implementation –
1. Create main window class
2. Create a spin box widget
3. Create a label to show the value
4. Add action to the spin box such that when value is changed action should get called
5. Inside the action set value to the label
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 widgets     def UiComponents(self):           # creating spin box         self.spin = QSpinBox(self)           # setting geometry to spin box         self.spin.setGeometry(100, 100, 100, 40)           # adding action to the spin box         self.spin.valueChanged.connect(self.show_result)           # creating label show result         self.label = QLabel(self)           # setting geometry         self.label.setGeometry(100, 200, 200, 40)       # method called by spin box     def show_result(self):           # setting value of spin box to the label         self.label.setText("Value : " + str(self.spin.value()))     # create pyqt5 app App = QApplication(sys.argv)   # create the instance of our Window window = Window()   window.show()   # start the app sys.exit(App.exec()) |
Output :
