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 –
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 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 appApp = QApplication(sys.argv)# create the instance of our Windowwindow = Window()# start the appsys.exit(App.exec()) |
Output :
