All other Qt modules rely on this module. To include the definitions of the module's classes, use the following directive:
If you use qmake to build your projects, Qt Core is included by default.
Qt adds these features to C++:
- a very powerful mechanism for seamless object communication called signals and slots
- queryable and designable object properties
- hierarchical and queryable object trees that organize
- object ownership in a natural way with guarded pointers (QPointer)
- a dynamic cast that works across library boundaries
The following pages provide more information about Qt's core features:
Threading and Concurrent Programming
Qt provides thread support in the form of platform-independent threading classes, a thread-safe way of posting events, and signal-slot connections across threads. Multithreaded programming is also a useful paradigm for performing time-consuming operations without freezing the user interface of an application.
Input/Output, Resources, and Containers
Qt provides a resource system for organizing application files and assets, a set of containers, and classes for receiving input and printing output.
In addition, Qt Core provides a platform-independent mechanism for storing binary files in the application's executable.
Qt Core also provides some of Qt's key frameworks.
- The Animation Framework
- JSON Support in Qt
- The State Machine Framework
- How to Create Qt Plugins
- The Event System
These are links to the API reference materials.
© 2016 The Qt Company Ltd. Documentation contributions included herein are the copyrights of their respective owners. The documentation provided herein is licensed under the terms of the GNU Free Documentation License version 1.3 as published by the Free Software Foundation. Qt and respective logos are trademarks of The Qt Company Ltd. in Finland and/or other countries worldwide. All other trademarks are property of their respective owners.