In this article we will see how we can set or change the bottom margin of the spin box, by default there is no margin set to the spin box i.e bottom margin value is zero. Although we can change that, setting margin to the spin box will not display any change in the spin box due to overriding take place by the widget to maintain its structure. But in order to set margin to the spin box we have set margin to the spin box’s line edit object by which we can display the margin in spin box. In order to do this we use setBottom method.
Syntax : margin.setBottom(n) Here margin is the QMargin object of the QLineEdit object which belongs to spin box Argument : It take integer as argument Return : It returns None
Implementation steps : 1. Create a spin box 2. Get the line edit object of the spin box 3. Get the margin object from the spin box 4. Set the bottom margin to the spin box 5. Add this margin object back to the line edit object 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 range to the spin box self.spin.setRange(0, 999999) # setting prefix to spin self.spin.setPrefix("Prefix ") # setting suffix to spin self.spin.setSuffix(" Suffix") # getting line edit object line_edit = self.spin.lineEdit() # getting margins margin = line_edit.contentsMargins() # setting bottom margin margin.setBottom(30) # setting this margin back to line edit line_edit.setContentsMargins(margin)# create pyqt5 appApp = QApplication(sys.argv)# create the instance of our Windowwindow = Window()window.spin.setFocus()# start the appsys.exit(App.exec()) |
Output : 
