PyQt5 QSpinBox – Getting the sender signal index value
In this article we will see how we can get the spin box sender signal index value. Sender signal index is the meta-method index of the signal that called the currently executing slot, which is a member of the class returned by sender. If called outside of a slot activated by a signal, -1 is returned.
In order to do this we use senderSignalIndex method with the spin box object.
Syntax : spin_box.senderSignalIndex()
Argument : It takes no argument
Return : It returns integer value
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 range to the spin box self.spin.setRange(1, 999999) # setting prefix to spin self.spin.setPrefix("PREFIX ") # setting suffix to spin self.spin.setSuffix(" SUFFIX") # creating a label self.label = QLabel(self) # making label multi line self.label.setWordWrap(True) # setting label geometry self.label.setGeometry(100, 200, 250, 60) # getting sender signal index value = self.spin.senderSignalIndex() # setting text to the label self.label.setText("Sender Signal Index : " + str(value)) # create pyqt5 app App = QApplication(sys.argv) # create the instance of our Window window = Window() # start the app sys.exit(App.exec()) |
Output :
