PyQt5 QSpinBox – Adding action
In this article we will see how we can add action to the spin box, action basically a method called by spin box every time its value get changed. Adding action to the spin box as every time user change the value something should happen.
In order to add action we will use spin_box.valueChanged.connect
method.
Syntax : spin_box.valueChanged.connect(method_name)
Argument : It takes method name as argument
Action performed : Every time the value of spin box changes method will get called
Implementation steps :
1. Create a spin box
2. Create label to show the value
3. Add action to the spin box
4. Inside the action method get the current value and show it through the label
Below is the implementations
# 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 , 100 , 40 ) # adding action to the spin box self .spin.valueChanged.connect( self .show_result) # creating label show result self .label = QLabel( self ) # setting geometry self .label.setGeometry( 100 , 200 , 200 , 40 ) # method called by spin box def show_result( self ): # getting current value value = self .spin.value() # setting value of spin box to the label self .label.setText( "Value : " + str (value)) # create pyqt5 app App = QApplication(sys.argv) # create the instance of our Window window = Window() window.show() # start the app sys.exit(App. exec ()) |
Output :
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