New Features in Qt 5.10

New Features (within existing modules)

• Qt Core
  • Added rudimentary implementation of QStringView. It is missing some (important) const-QString functions, but is fully functional as an interface type. To be completed for Qt 5.11.
  • Added many more functions to QLatin1String, too, co-evolving QLatin1String as the const char*-Latin-1-version of QStringView.
  • Added QIODevice::skip() to improve performance in read operations.
  • Explicitly little and big-endian integer types exposed (for instance qint16_le, quint32_be) for machine-independent data-type parsing.
  • Added QRandomGenerator providing a simple API for high-quality (optionally seed-less) random numbers.
  • Added accessors for metadata time fields of files to QFileInfo.
  • Added QSemaphoreReleaser a RAII-style class for QSemaphore.
  • Added QKeyValueIterator for more efficient iteration over keys of an associative container
• Qt GUI
  • Added cross-platform Vulkan enablers for Windows, Linux (xcb) and Android (level 23+): QVulkanInstance, QWindow with type VulkanSurface, and QVulkanWindow
  • Added new flags and functions to QSurfaceFormat and QOpenGLWidget to request sRGB-capable default/backing framebuffers
  • The OpenGL ES 3.2 API is now exposed in a cross-platform manner via QOpenGLExtraFunctions.
  • QImages can now use more than 2GByte of pixel data.
  • Added QFont::PreferNoShaping style strategy.
• Qt Widgets
  • QWidget::createWindowContainer() is now functional on Android
  • QOpenGLWidget is now usable for rendering and reading back (grabbing) offscreen content.
  • Added AA_DisableWindowContextHelpButton attribute that prevents the automatic" What's this" button on dialogs on Windows
  • Added tabStopDistance property in QTextOption, QTextEdit and QPlainTextEdit
  • Added selectionEnd(), selectionLength() to QLineEdit, complementing selectionStart()
  • Added setDoubleStep to QInputDialog, to enable changing of the step amount for getDouble()
  • Added isPersistentEditorOpen() to QAbstractItemView, QTreeWidget, QTableWidget and QListWidget
  • Added new style hint: SH_TitleBar_ShowToolTipsOnButtons
  • Added support for specifying custom internal texture formats in QOpenGLWidget
  • QDockWidget acquired the ability to be dropped together side by side
• Qt Network
  • OpenSSL 1.1 back-end.
  • Persistent store of HSTS policies in QNAM (QSettings-based).
  • Implemented the h2c procotol upgrade used by non-SSL HTTP/2.
• Qt QML
  • Added support for enum declarations in QML.
  • Added support for retranslation.
• Qt Quick
  • Added a shapes plugin, providing a Shape type under QtQuick.Shapes 1.0. This allows adding stroked and filled paths into Qt Quick scenes. Such shapes are rendered either by generating geometry or by using the GL_NV_path_rendering extension.
  • Added the Qt.labs.handlers plugin, providing TapHandler, PinchHandler and DragHandler. These are the beginnings of the Pointer Handlers which we have been talking about for some time: lightweight objects for handling events from the mouse or the touchscreen in a device-agnostic way.
  • QQuickItem layers can now request to be backed by multisample framebuffers via the property layer.samples
  • Added font.kerning and font.preferShaping properties for advanced control over the font shaping subsystem.
  • Added advance property to Text to retrieve the typographical advance width.
  • Added Image element support for direct loading of ETC1 and ETC2 compressed textures from .pkm files. (on platforms where ETC1/2 are supported)
• Qt Quick Controls 2
  • Introduced new QML types: Action, ActionGroup, MenuBar
  • Introduced new styles:
    • the Fusion style offers a platform agnostic desktop-oriented look'n'feel
    • the Imagine style is based on image assets that can be provided using a predefined naming convention
  • Added support for:
    • actions and icons in buttons, delegates, and menus
    • non-exclusive button groups
    • nested menus, and cascading sub-menus
    • wrapping spinboxes
    • propagating palettes (only Default, Fusion & Imagine styles for now, others coming later)
    • specifying the default font and palette in qtquickcontrols2.conf
    • mnemonics in buttons, menus and menubars
  • Added new members:
    • TabBar::index, tabBar, and position attached properties:
    • Dialog::applied(), reset(), discarded(), and helpRequested() signals
    • Dialog::standardButton() method
    • StackView::empty property
    • Menu::popup() and dismiss() methods
    • Menu::actionAt(), addAction(), insertAction(), removeAction(), and takeAction() methods
    • Menu::menuAt(), addMenu(), insertMenu(), removeMenu(), and takeMenu() methods
    • Menu::count and currentIndex properties
    • MenuItem::menu property
    • Container::removeItem(Item) and takeItem(int) methods (TabBar and SwipeView)
    • Popup::enabled, mirrored, and opened properties
    • "horizontal" and "vertical" properties to all controls that had an "orientation" property: RangeSlider, Slider, ScrollBar, ScrollIndicator, SwipeView
  • Other improvements:
    • Added support for specifying a transition for StackView::clear()
    • Made ApplicationWindow::activeFocusControl work with a plain Window
    • Made background dimming for popups work without ApplicationWindow
    • Made Material style DialogButtonBox use the Android button layout
    • Made Default style Slider and RangeSlider visually indicate the progress/range
• Qt 3D
  • Tech Preview of Skeletal Animation system
  • Animation clocks: Control playback speed of one or more animators from a clock
  • Framebuffer blit frame graph node
  • Proximity filter frame graph node
  • Improved layer filtering frame graph node
  • Shader graphs: dynamically generate fragment shaders from graph based description
  • Sprite sheet support
  • Point and line picking support
  • Camera viewAll command
  • Optional SIMD support
  • Scene2D: Embed Qt Quick content into Qt 3D and interact with it
• Qt Graphical Effects
  • The effects are now functional also in core profile OpenGL contexts.
• Qt WebEngine
  • Updated to Chromium 61.
  • Pause/resume added to download items.
  • Added settings for allowing window activation from JavaScript.
  • Added settings for hiding scrollbars.
  • More WebActions that used to be in QWebPage added to QWebEnginePage.
  • New method QWebEnginePage::download for starting downloads programmatically.
• Qt Serial Bus
  • Added local echo flag to QCanBusFrame to mark frames that are sent from the local system to the CAN bus.
• Qt Connectivity
  • The UWP bluetooth and BLE backends can now be used on desktop Windows (>= 10) too.
• Qt Virtual Keyboard
  • Added the following keyboard layouts: Hebrew, Serbian, Hungarian, Czech, Croatian, Bulgarian, Greek, Estonian, and Dutch.
  • Added handwriting support for Farsi, Arabic, and CJK (Chinese/Japanese/Korean).
  • Added new component (InputModeKey) for input mode switch.
  • OpenWNN:
    • Fixed crash when pressing the space after entering a smiley.
    • Fixed and optimized OpenWNN engine

• Qt X11 Extras
  • Added new peekEventQueue() API to peek into the XCB event queue. This enables porting certain Qt4-based applications to Qt5 (those using Xlib's event handling functions to peek into the X11 event queue).

• Emulator
  • Support multiple screens
  • Plugin support
  • Device mockups are QML based
• Device Creation / Boot2Qt
  • Device images updated to Yocto 2.3 (pyro)

New Modules

• Qt Network Auth - Provides support for OAuth1 & OAuth2
• Qt Speech - Supports text-to-speech

Platform Changes

• Jira tracking for 5.10 changes:

Technology Preview Modules

• Qt Remote Objects (TP2) - A module that allows you to easily share QObject interfaces (Signals/Slots/Properties) between processes or devices.
• Qt WebGL Streaming Plugin - Stream applications to browsers over the network

Deprecated Modules

The following modules are part of Qt 5.10 release, but deprecated and considered for removal in subsequent releases of Qt:

• Qt Script

Configurations