New Features in Qt 5.11

Note that this page is work in progress until the Qt 5.11 Beta release.

New Features (within existing modules)

• Qt Core
  • QFloat16 now has two methods for bulk conversion between float16 and float, using hardware SIMD acceleration if available at runtime.
  • QVarLengthArray now has rvalue reference versions of prepend and insert, and can hold movable-only datatypes such as std::unique_ptr.
  • QVector now has rvalue reference versions of prepend and insert.
  • QUuid toString() and toByteArray() can now takes a parameter specifying the generated format.

• Qt Network
  • ALPN (via Secure Transport) and thus HTTP/2 negotiation are now supported on iOS (starting from version 11)
  • QNetworkRequest now has the Http2DirectAttribute to start a connection in HTTP/2 without first negotiating.
• Qt Qml
  • Rewritten the compiler pipeline. We now directly generate byte code from the AST, and store that as our intermediate representation
  • Optimized handling of JS calls, bringing large improvements especially when calling small functions
  • Newly written byte code interpreter with a vastly improved performance (at 80-90% of the JIT in Qt 5.10)
  • .qmlc files are now fully platform independent and store byte code instead of assembly
  • New hotspot JIT that generated optimised assembly for byte code that gets repeatedly executed
  • CONFIG += qmlcompiler now also works in the open source version, by embedding the generated byte code at compile time

• Qt Quick
  • Expanded support for loading compressed textures in Image element. Now supports both .ktx and .pkm container file formats.

• Qt Quick Controls 2
  • AbstractButton
    • Added autoRepeatDelay and autoRepeatInterval properties.
    • Promoted the autoRepeat property from Button to AbstractButton.
    • [QTBUG-62811] Added pressX and pressY properties to expose the press point to QML.
  • ButtonGroup
    • [QTBUG-56295][QTBUG-63782] Added a checkState property. It indicates the combined check state of the entire group.
  • CheckBox and CheckDelegate
    • [QTBUG-56295] No longer force tristate to true when setting checkState to Qt.PartiallyChecked. This allows presenting a partially checked state without being interactively tri-state.
    • [QTBUG-56295] No longer consider partially checked as checked. This fixes check state cycling for a non-tri-state checkbox so that it goes from partially checked to fully checked state.
    • [QTBUG-63238] Made it possible to implement nextCheckState() in QML.
  • ScrollBar and ScrollIndicator
    • [QTBUG-56557] Added minimumSize, visualSize, and visualPosition properties.
  • SpinBox
    • Added a displayText property to allow styles to create a light binding to display the textual value instead of having to call the textFromValue() JS-function.

• Qt 3D

• Qt Multimedia

• Qt WebEngine
  • Updated to Chromium 64 or 65.
  • Embedded DevTools without using a port and separate browser.
  • Installable cookie filter.
  • Quota permissions.

• qdoc
  • qdoc now uses libclang for parsing C/C++ code.

• Qt Designer
  • Added support for ID-based translations ( QTBUG-34610 )

• Qt GUI
  • On Windows Desktop, the accessibility support was updated and vastly improved. The implementation is now based on Microsoft UI Automation (it was formerly based on Microsoft Active Accessibility).
  • Linux Printing now supports more CUPS options with the advanced tab in QPrintPropertiesDialog (QTBUG-54464) allowing many additional settings (amongst them arbitrary page ranges QTBUG-1311).
• Qt SerialBus
  • Added J2534 Pass-Thru CAN plugin for communication between a computer and a vehicle
  • Added description, serial number and channel to QCanBusDeviceInfo, as far as supported by the various plugins.
  • Introduced categorized logging to the CAN bus module which can be enabled by the "qt.canbus" and "qt.canbus.plugins.<pluginname>" filters.
  • QCanBusFrame::isValid() now checks for invalid CAN FD payload lengths. E.g. 24 is  a valid CAN FD payload length, but 28 is not.

New Modules

• No new modules added

Platform Changes

• Jira tracking for 5.11 changes
• MSVC2013 support removed from the code base
• QNX 6.6 no longer supported (note: QNX 7 remains fully supported)
• macOS 10.10 no longer supported
• Improved Accessibility support on Win32 by adopting the Windows UI Automation framework
• XCB
  • Support for missing 'dead keys' such as dasia and diaeresis.
• eglfs
  • Added support for framebuffer formats other than XRGB8888 (RGB565, ARGB8888).
  • Added experimental screen cloning support (by scanning out the same framebuffer on multiple crtcs)
  • Added support for operating with DRM render nodes (/dev/dri/renderDnn) in a headless mode transparent to applications
  • Added a makespec for Renesas R-Car M3
  • Added experimental backend for compositing Qt content with other hardware layers via VSP2 on Renesas devices

Technology Preview Modules

• Qt Remote Objects (TP3) - A module that allows you to easily share QObject interfaces (Signals/Slots/Properties) between processes or devices.
• Qt WebGL Streaming Plugin (TP2) - Stream applications to browsers over the network

Deprecated Modules

The following modules are part of Qt 5.11 release, but deprecated and considered for removal in subsequent releases of Qt:

• Qt Script

Configurations