In this article we will see how we can magnify the combo box when mouse is on it. Magnify means enlarging the size of the combo box when cursor is on it. We can’t change the size of combo box using style sheet therefore we can not use hover in stylesheet. In to know when mouse is on combo box we use underMouse method In order to do this we use underMouse method.
Syntax : combo_box.underMouse() Argument : It takes no argument Return : It returns bool
Steps for implementation : 1. Create a combo box. 2. Create a timer object which calls a function after every 100 milliseconds. 3. Inside the timer function check if the combo box is under mouse. 4. If combo box is under the mouse increase its size else make its size smaller. 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 a check-able combo box object
self .combo_box = QComboBox( self )
# setting geometry of combo box
self .combo_box.setGeometry( 200 , 150 , 100 , 30 )
# geek list
geek_list = ["Sayian", " Super Sayian", " Super Sayian 2 ", " Super Sayian B"]
# adding list of items to combo box
self .combo_box.addItems(geek_list)
# setting stylesheet of the combo box
self .combo_box.setStyleSheet("border : 1px solid red;")
# creating a timer object
timer = QTimer( self )
# adding action to the timer
timer.timeout.connect( self .do_something)
# starting timer
timer.start( 100 )
# action called by the timer
def do_something( self ):
# checking if mouse is on combo box
if self .combo_box.underMouse():
# making size larger
self .combo_box.resize( 110 , 40 )
else :
# making size smaller
self .combo_box.resize( 100 , 30 )
# 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 :