Qt 5.10 的新功能

Qt 5.10 中的新特征

Qt Connectivity 模块

The UWP Bluetooth and Bluetooth LE backends can now be used on Windows 10.

Qt Graphical Effects 模块

Added support for effects in core profile OpenGL contexts.

Qt GUI 模块

Added the cross-platform Vulkan enablers, QVulkanInstance , QWindow with type VulkanSurface, and QVulkanWindow . These enablers are for Windows, Linux (xcb), and Android (level 23+).
Added new flags and functions to QSurfaceFormat and QOpenGLWidget , to request sRGB-capable default/backing framebuffers.
Added the cross-platform enablers for OpenGL ES 3.2 API, which are now accessible through QOpenGLExtraFunctions .
Added support for more than 2 Gigabyte of pixel data in QImage .
添加 QFont::PreferNoShaping style strategy.

Qt Network 模块

Upgraded OpenSSL back-end to use library v1.1.
Persistent store of HSTS policies in QNAM ( QSettings -based).

Qt Quick 模块

Added a shapes plugin, providing a Shape type under QtQuick .Shapes 1.0, which enables 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 (tech. preview), providing TapHandler , PinchHandler ，和 DragHandler . These are lightweight objects for handling events from the mouse or the touchscreen in a device-agnostic way.

注意： The plugin is available as a technology preview so it could could change in future releases.
Added support for multi-sample framebuffers to QQuickItem layers using the layer.samples property.
添加 font.kerning and font.preferShaping properties for advanced control over the font shaping subsystem.
添加 advance property to Text to retrieve the typographical advance width.
Added Image element to enable direct loading of ETC1 and ETC2 compressed textures from .pkm files on platforms where ETC1/2 are supported.

Qt Quick Controls 2 模块

Added support for effects in core profile OpenGL contexts.
Added new QML types: 动作 , ActionGroup ，和 MenuBar .
Added these 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 actions support for it in:
- buttons, delegates, menus,
- exclusive button groups,
- nested menus, and cascading sub-menus.
Added support for:
- wrapping SpinBox ,
- propagating palettes (only Fusion & Imagine styles for now),
- specifying the default font and palette in qtquickcontrols2.conf,
- and preliminary support for mnemonics in MenuItem (only shortcut functionality).
Added the following new members:
- TabBar::index , tabBar ，和 position attached properties.
- Dialog::applied (), reset (), discarded ()，和 helpRequested () 信号。
- Dialog::standardButton () 方法。
- StackView::empty 特性。
- Menu::popup () 和 dismiss () 方法。
- Menu::actionAt (), addAction (), insertAction (), removeAction ()，和 takeAction () 方法。
- Menu::menuAt (), addMenu (), insertMenu (), removeMenu ()，和 takeMenu () 方法。
- Menu::count and currentIndex 特性。
- MenuItem::menu 特性。
- Container::removeItem(Item) and takeItem(int) methods ( TabBar and SwipeView ).
- Popup::enabled , mirrored ，和 opened 特性。
- horizontal and vertical properties to all controls that have the orientation 特性： RangeSlider , Slider , ScrollBar , ScrollIndicator ，和 SwipeView .
Other improvements:
- Added support for specifying a transition for StackView::clear ().
- Enabled support for ApplicationWindow::activeFocusControl attached property for a plain Window .
- Enabled background dimming for popups without ApplicationWindow .
- Updated Material style for DialogButtonBox to use the Android button layout.
- Updated default style Slider and RangeSlider to visually indicate the progress/range.

Qt SerialBus 模块

Added local echo flag to QCanBusFrame to mark frames that are sent from the local system to the CAN bus.

Qt Virtual Keyboard 模块

Added the keyboard layouts for 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.

Qt WebEngine 模块

Updated to be based on Chromium 60.
Added pause/resume functionality to download items.
Added settings for blocking JavaScript focus and hiding scrollbars.
Updated QWebEnginePage with more WebActions, which were supported by QWebPage earlier.
添加 QWebEnginePage::download for triggering downloads.

Qt Widgets 模块

Added support for embedding a window into a QWidget on Android using QWidget::createWindowContainer ().
Added support for rendering and reading back (grabbing) offscreen content using QOpenGLWidget .
添加 AA_DisableWindowContextHelpButton attribute that prevents the automatic "What's this" button on dialogs on Windows.
添加 tabStopDistance 特性在 QTextOption , QTextEdit ，和 QPlainTextEdit .
添加 selectionEnd() , selectionLength() to QLineEdit , complementing selectionStart() .
添加 QInputDialog::setDoubleStep to enable changing of the step amount for getDouble() .
添加 isPersistentEditorOpen() to QAbstractItemView , QTreeWidget , QTableWidget ，和 QListWidget .
添加新 QStyle::StyleHint , SH_TitleBar_ShowToolTipsOnButtons .
Added support for specifying custom internal texture formats in QOpenGLWidget .

新模块

Qt Network Authorization - Provides support for OAuth1 and OAuth2.
Qt Speech - Enables text-to-speech in Qt Applications.

These modules were previously released as technology preview and are now fully supported Qt add-on modules.

技术预览模块

Qt Remote Objects (TP2) - Sharing QObject interfaces (signals, slots, and properties) between processes or devices.
Qt WebGL Streaming Plugin - Enables streaming Qt application to a web browser over the network.

弃用功能

Qt Script

Deprecated modules are still included in Qt 5.10, but are considered for removal in future releases.

API 变化列表

以下页面包含 Qt 5.10 中的 API 变化列表：

内容