QtCore
QtCore is a fundamental module within the Qt application framework. It provides a wide array of non-GUI core functionalities that are essential for developing applications using Qt. This module serves as the foundation upon which other Qt modules, such as QtGui and QtWidgets, are built.
Key features of QtCore include classes for handling strings, collections, memory management, and file I/O. It
Furthermore, QtCore includes classes for threading and concurrency, enabling developers to create responsive and efficient applications