In this article we will see how we can set the auto fill property of the spin box, this property will cause Qt to fill the background of the spin box before invoking the paint event. The color used is defined by the QPalette.Window color role from the spin box’s palette. By default this property is false. This property should be handled with caution in conjunction with Qt Style Sheets. When a spin box has a style sheet with a valid background or a border-image, this property is automatically disabled. In order to do this we use setAutoFillBackground method.
Syntax : spin_box.setAutoFillBackground(True) Argument : It takes bool argument Return : It returns None
Note :This property cannot be turned off (i.e., set to false) if a spin box’s parent has a static gradient for its background. 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 , 250 , 40 )
# setting prefix to spin
self .spin.setPrefix("Prefix ")
# setting suffix to spin
self .spin.setSuffix(" Suffix")
# allowing spin box to auto fill background
self .spin.setAutoFillBackground( True )
# filling background using palette of spin box
# and setting its color to the red
self .spin.setForegroundRole(QPalette.Base)
p = self .spin.palette()
p.setColor( self .spin.foregroundRole(), Qt.red)
self .spin.setPalette(p)
# create pyqt5 app App = QApplication(sys.argv)
# create the instance of our Window window = Window()
# start the app sys.exit(App. exec ())
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Output :