What's New in Qt 6.11

New and Restored Modules in Qt 6.11

Qt 6.11 adds the following modules and tools:

• Qt Canvas Painter - Accelerated 2D painting solution for Qt Quick and QRhi-based render targets.
• Qt OpenAPI - An extension of the upstream Open API generator that generates Qt HTTP clients, typically used for RESTful APIs.
• Qt TaskTree - Provides a declarative way to compose and execute asynchronous task workflows.

New Features in Qt 6.11

Qt CoAP Module

• QCoapClient::bindInterface allows to bind the communication to a specific network interface.

Qt Core Module

• QDate is now weakly incrementable, i.e. implements pre- and post-fix increment (and decrement) operators, and can be used in a C++20 std::views::iota.
• QJniObject APIs can now be called with std::expected (or an equivalent type) as the return type, in which case Java exceptions are not consumed by the framework and instead passed back to the caller as the unexpected result.
• QRangeModel::ItemAccess provides a customization point for accessing role data of a multi-role item type.
• QRangeModel can now be used with C++ ranges that don't provide a constant std::begin/end implementation, such as C++20 std::views::filter.
• With ranges that use the same QObject subclass for multi-role items, the new QRangeModel::autoConnectPolicy can be set to Full or OnRead to connect the changed-signals of all exposed properties of QObject items to the corresponding dataChanged() signal emission.
• QRangeModelAdapter provides a typical C++ container API to the range a QRangeModel operates on, ensuring that relevant QAbstractItemModel signals are emitted on changes, without user code having to work with QModelIndex. This new class is under technology preview.

Qt DBus Module

Qt Graphs Module

• Added new QCustomSeries class to allow users to create their own 2D graph types, such as candlestick or box-plot graphs
• Added multi-axis support to 3D graphs in the form of rowAxis, valueAxis, and columnAxis properties in QBar3DSeries, and axisX, axisY, and axisZ properties in QScatter3DSeries and QSurface3DSeries
• Added subSlicesCount, subSlicesSum, subSlicesRatio, and sliceChildren properties in QPieSlice to allow creating sub slices in pie and donut graphs
• Added visualMin and visualMax properties in QDateTimeAxis and QValueAxis to hold the visible axis ranges
• Added gradient and selectedGradient properties in QAreaSeries to allow using gradients in area graphs
• Added labelPosition property in QBarCategoryAxis to allow adjusting the label placement in bar graphs
• Added timeZone property in QDateTimeAxis to allow setting your own time zone for the axis
• Added pan and zoom properties in QDateTimeAxis to allow panning and zooming the same way as in QValueAxis
• Added color and subColor properties in QAbstractAxis to allow overriding theme colors for the axes
• Added joinStyle, lineStyle, strokeStyle, dashOffset, and dashPattern properties in QLineSeries to allow further styling in line graphs
• Added optimized property in QSplineSeries to allow using Catmull-Rom interpolation instead of the more performance-heavy and accurate default method
• Added customRowLabels and customColumnLabels properties in QBar3DSeries to allow overriding row and column labels
• Added rotationAbsolute property in QCustom3DItem to fix problems in custom item rotations
• Added rowsSanitized property in QSurface3DSeries to automatically remove rows with invalid data
• Added cutoffMargin in GraphsItem3D and Q3DGraphsWidgetItem to adjust the sensitivity of culling items near graph margins

Qt GRPC Module

Qt GUI Module

Qt HttpServer Module

Qt Lottie Animation

• Added support for path fill rules.
• Added CMAKE command qt_target_qml_from_lottie() for converting from Lottie to QML at build time.
• lottietoqml and VectorImage backend are no longer tech preview.
• VectorImage: Added support for animating shapes along paths.
• VectorImage: Added support for morphing animations (interpolating between two shapes.)
• VectorImage: Added support for matte layers.

Qt Multimedia Module

• Added callback-based overloads for the start methods of QAudioSource and QAudioSink to allow real-time audio processing.

Qt Network Module

Qt Protobuf Module

Qt QML Module

• Added workspace support in QML Language Server.
• Added go to C++ definition support in QML Language Server.
• Added support to silence context property warnings via a .contextProperties.ini configuration file for qmllint.

Qt Quick Module

• Added CMAKE command qt_target_qml_from_svg() for converting from SVG to QML at build time.

Qt Quick Controls Module

• Added DoubleSpinBox, which is similar to SpinBox but supports floating-point values.
• Added defaultButton and defaultStandardButton to DialogButtonBox. When set, the respective button will be highlighted and receive activeFocus whenever the DialogButtonBox gets focus.

Qt Quick Dialogs Module

Qt Quick Effects Module

Qt Quick 3D Module

• Added QML API for user-defined render passes, enabling custom rendering pipelines directly in QML without C++ knowledge
• Added ssrEnabled property in ExtendedSceneEnvironment to enable screen-space reflections (SSR)
• Added screen-space global illumination (SSGI) effect to ExtendedSceneEnvironment, providing ambient occlusion and real-time indirect lighting
• Added per-object motion vector generation for Temporal AA and motion blur effects
• Added layering support to allow grouping nodes and controlling which layers the camera renders
• Added linked list order-independent transparency (OIT) rendering method
• Added NORMAL_ROUGHNESS_TEXTURE support in post-processing effects and custom materials
• Added blue noise sampling to PCF soft shadows for improved quality with less visible noise patterns
• Added proper handling of pre-multiplied alpha for Qt Quick content in textures
• Added VIEW_MATRIX and PROJECTION_MATRIX exposure to post-processing effects
• Added pickInRect() method in QQuick3DViewport for rectangle-based object selection
• Added closestPointPick() method in View3D to find the closest point on a surface to a given point
• Added rayPick() overload that accepts a specific model parameter
• Added scene shape for particle emitters that dynamically calculates shapes based on scene geometry
• Added QQuick3DTextureProviderExtension API for simplified custom texture provider creation
• Added scheduleRenderResults() function in QSSGFrameData to request specific render pass results
• Updated Assimp to v6.0.2

Qt Quick 3D XR Module

• Added OpenGL desktop Linux support (Monado, Xlib, Wayland platforms)
• Extended processTouch() to deliver touch events to any pickable Model, not just XrItem
• Enhanced touchpointState() to return surface position and normal vector information for 3D touch interactions
• Added Popup and Menu support in XrItem through dedicated QQuickOverlay
• Updated OpenXR to v1.1.49

Qt Quick 3D Physics Module

Qt Quick VectorImage Module

• Added support for SVG masks.
• Added support for SVG post-processing filters to match the support in Qt SVG: feGaussianBlur, feColorMatrix, feOffset, feFlood, feBlend, feComposite and feMerge.
• Added support for animating shapes along paths.
• Added support for the SVG <symbol> tag.

Qt Serial Port Module

Qt Serial Bus Module

Qt Sql Module

Qt SVG Module

Qt Test Module

Qt VirtualKeyboard Module

Qt WebEngine Module

Qt WebView Module

Qt Widgets Module

Qt XML Module

Qt Mqtt Module

Tools

QDoc Documentation Generator

Qt Linguist

Platform Changes

Build System Changes

Desktop Platforms

Windows

Linux

macOS

Wayland Client on Linux

Mobile Platforms

Android

Qt for Android

• Qt Jenny now supports implementing Java interfaces and extending Java classes in C++.

Qt Quick for Android

iOS

Embedded Platforms

Boot to Qt

Real-Time Operating Systems

Modules Deprecated in Qt 6.11

The following modules are deprecated. We strongly advise against using them in new code.

For more information about the life-cycle of modules in Qt, see QUIP-14.

List of API Changes

These pages contain an overview of API changes in Qt 6.11:

• New Classes and Functions in Qt 6.11
• Obsolete Classes

Known Issues

For information about known issues in Qt 6.11, see the Qt Wiki.