What's New in Qt 5.1▲

Qt 5.1 introduces many changes for helping developers continue creating wonderful applications, easily and with less code. As well in this release, focus is placed on bug fixing and new features, while maintaining compatibility with Qt 5.0.

This page is a summary of new features. For specific API changes, the List of API Changes section contains links to new and obsolete classes.

New Modules▲

New modules add more functionality for developers to use on various platforms.

  • Qt Quick Controls - a set of reusable UI controls. Qt 5.1 targets desktop platforms, while future releases will include more features useful on touch devices.

  • Qt Quick Layouts - provides layouts for Qt Quick

  • Qt Quick Dialogs - contains types for creating and interacting with system dialogs

  • Qt X11 Extras - adds platform specific APIs for X11

  • Qt Sensors - provides access to sensor hardware and motion gesture recognition both via QML and C++ interfaces. Supports Android, BlackBerry, iOS, and Mer platforms.

  • Qt Serial Port - provides an interface for hardware and virtual serial ports

The All Modules page contains a list of all modules in Qt 5.1.

New Supported Platforms▲

Qt 5.1 introduces support for following new platforms with technology preview status:

Summary of Changes▲

 

moc Changes▲

  • New keyword in Q_PROPERTY(), MEMBER, lets you bind a property to a class member without requiring to have a getter or a setter.

qmake Changes▲

  • On Windows: Added support for specifying application icon (via RC_ICONS).

Qt Core Changes▲

  • Added support for SHA3 to QCryptographicHash

  • Added toInt(), toUInt(), and similar functions to QStringRef

  • A new threadsafe initialization of global statics through refactored Q_GLOBAL_STATIC.

  • A new class, QLockFile, provides locking between processes using a file. This lock enables applications to check that there is only one instance of it running.

  • A new class, QSaveFile, provides transaction such as file writing.

Qt GUI Changes▲