from PyQt5.QtWidgets import QApplication, QLineEdit, QPushButton, QVBoxLayout, QWidget app = QApplication([]) window = QWidget() text_field = QLineEdit() action_button = QPushButton('Action') text_field.addAction(action_button.clicked, QLineEdit.ActionPosition.TrailingPosition) layout = QVBoxLayout() layout.addWidget(text_field) window.setLayout(layout) window.show() app.exec_()
from PyQt5.QtGui import QKeySequence from PyQt5.QtWidgets import QApplication, QLineEdit, QVBoxLayout, QWidget app = QApplication([]) window = QWidget() text_field = QLineEdit() shortcut = QKeySequence('Ctrl+A') text_field.addAction(shortcut, QLineEdit.ActionPosition.TrailingPosition) layout = QVBoxLayout() layout.addWidget(text_field) window.setLayout(layout) window.show() app.exec_()In this example, we are creating a QLineEdit field and adding a shortcut key to it. When the user presses the specified shortcut key, the function associated with it is executed. In conclusion, PyQt5.QtWidgets is a powerful package library for creating GUI applications in Python. It provides several classes and functions for creating user interfaces. QLineEdit.addAction is one of the functions provided by the QLineEdit class, which is used to add an action to a QLineEdit field.