In this article we will see how we can know if the mouse/cursor is on the combo box or not, in order to do so we use underMouse
method, every time when this function is called it checks the position of the mouse and checks if its position is on the combo box or not.
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 label to show the result
3. Create a timer object which calls a function after every 100 milliseconds
4. Inside the timer function check if the combo box is under mouse
5. Show the result through 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 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 label to show label
self .label = QLabel( self )
# setting geometry to the label
self .label.setGeometry( 200 , 200 , 200 , 30 )
# 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 the combo box is under mouse
under = self .combo_box.underMouse()
# setting text to the label
self .label.setText( "Under Mouse ? : " + str (under))
# 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 :