What's New in Qt 5.12

Added the static QCryptographicHash::hashLength method. It returns the length of a hash's output.

Added wildcardToRegularExpression helper method to QRegularExpression for easier wildcard implementation in user code.

Added anchoredPattern helper method to QRegularExpression for easier exact matching implementation in user code.

Added QRegularExpression support to QSortFilterProxyModel.

Support for CBOR data similar to existing JSON support.

Added DTLS (Datagram Transport Layer Security) over UDP support.

Added renegotiation to Security Transport backend.

Added ALPN support and HTTP/2 protocol negotiation to Security Transport backend.

Added PKCS#8 support in the generic SSL backend (WinRT and Secure Transport).

Added QPasswordDigestor: a new namespace that contains password-based key derivation functions (currently PBKDF1 and PBKDF2).

Added QStyle::SH_SpinBox_StepModifier style hint.

Added QLineEdit::inputRejected signal.

Added Qt::WA_StyleSheetTarget attribute.

Added QLayout::indexOf(QLayoutItem *) function.

The JavaScript engine now supports ECMAScript 7. This includes an upgrade to ECMAScript 6, see ECMAScript 6 - New Features: Overview & Comparison.

ECMAScript modules can now be loaded directly with QJSEngine::importModule() and imported in .qml files when using the .mjs file extension.

Pointer Handlers are renamed to Input Handlers (we include the pre-existing Keys attached property in this category) and are now fully supported as a first-class QML feature in Qt Quick. (C++ API for them is still not public yet.)

HoverHandler is a new type of handler for detecting mouse hover. It can detect hover even in cases of deep nesting: unlike MouseArea, you can hover multiple nested Items with HoverHandlers in them at the same time. (For example, a sidebar and an individual button on the sidebar).

DragHandler is now a multi-point handler: if you set minimumPointCount to 2, it will react only to a 2-finger drag, for example. This can give you another degree of freedom: single-finger drag can perform the typical item movement, and 2-finger drag can do something else (change the tilt angle, for example).

Added support for pregenerated distance field caches for faster startup times.

Added TableView as another type of Item View: on par with ListView but having multiple columns. Unlike the one in QtQuick Controls 1.x, it does not do any styling; rather it provides the optimal solution for instantiating (and pooling and reusing) delegates on demand as you scroll through the rows and columns.

Tech Preview: Added DelegateChooser as a means of choosing different delegates in Item Views (such as TableView) depending on role values from the model, or depending on the index.

Dial: Added inputMode property, that adds two new ways of interacting with the Dial: horizontally and vertically. These new input modes use a relative input system that adds changes to the dial's position to its value. This results in a dial that is less "jumpy", making it safe for operations that could be harmful if done incorrectly, like adjusting audio levels.

Control and Popup: Added topInset, bottomInset, leftInset, an