Qt 5.2 的新功能

Qt 5.2 introduces many changes for helping developers continue creating wonderful applications, easily and with less code. As well in this release, focus is placed on bug fixing and new features, while maintaining compatibility with Qt 5.1 and 5.0.

This page is a summary of new features. For specific API changes, the API 变化列表 section contains links to new and obsolete classes.

新模块

• Qt Android Extras
• Qt Bluetooth
• Qt Mac Extras
• Qt NFC
• Qt Positioning
• Qt Windows Extras

更多信息，拜访 所有模块 页面。

支持新的平台

Android

• Full support for camera and recording
• Low-latency audio ( QAudioInput , QAudioOutput )
• Command-line deployment tool
• JNI convenience API
• OpenSSL 支持

更多信息，拜访 Qt for Android 页面。

iOS

• Media player support
• Basic camera support (only viewfinder and image capture)
• Low-latency audio ( QAudioInput , QAudioOutput )

更多信息，拜访 Qt for iOS 页面。

Qt Creator 更新

Qt Creator 3.0 is released along with Qt 5.2. In Qt Creator 3.0, the following were added:

• Initial iOS support
• API cleanup
• Enhanced Android support
• Initial debugging backend for the LLDB Debugger (OS X)

安装更新

In 5.2, there are new reference installers for OS X:

• Android
• iOS

There is also a new target binary for Windows, OS X, and Linux:

• Qt for Android ARMv5

The installers are available from the 下载 页面。

Qt 5.2 中的新特征

Qt Core 模块

• 添加类 QCommandLineParser for command-line arguments parsing
• Added new overload to QObject::connect () to add a context object when connecting to a lambda
• 添加新 QStringRef methods; left, right, mid
• 添加 QLoggingCategory / qCDebug , qCWarning , and other macros to configure what gets logged at runtime
• 添加类 QTimeZone to support time zones using Olsen time zone IDs
• Added support to QDateTime for new Qt::TimeSpec of Qt::TimeZone and Qt::OffsetFromUTC
• 添加新类 QCollator to provide advanced platform-based collation
• Added more I/O redirection possibilities to QProcess
• Added iteration capability to containers in QVariant
• Added dereferencing to QObject for smart pointers in QVariant
• 添加 QFileSelector to ease the selection of files when running in a different platform

Qt GUI 模块

• Added applicationState() function and applicationStateChanged() signal to QGuiApplication
• 添加 QOpenGLTexture class

Qt Widgets 模块

• Added support for embedded clear button commonly used for item view filtering and side actions to QLineEdit
• Added methods based on QUrl to QFileDialog
• 添加新 QKeySequenceEdit class
• Restored session-management support from Qt4
• Restored basic startup-notification support on Unix
• Added placeholderText property to QTextEdit
• Added getMultiLineText static method to QInputDialog
• Added tabBarClicked and tabBarDoubleClicked signals to QTabBar

Qt Print Support 模块

• Added advanced CUPS features on Linux including server-side page range selection, odd and even page selection, pages-per-sheet, job scheduling, and banner pages.

Qt QML 模块

• Added new property to Qt.application : state
• Added ability to define QML singletons with QML files
• 添加 QQmlFileSelector for applying file selectors to support certain styles of cross-platform development
• Added a supported method for launching QML-only applications for the QML binary runtimes
• New V4 JS engine

Qt Quick 模块

• 添加新 scenegraph renderer for improved performance
• Added texture atlas support in SceneGraph
• 添加新 animator types, which can run animations on the scene graph's render thread.
• Support for external drag-and-drop

Qt Quick Controls 模块

• Added support for an editable combo box
• Added support for multi-selection in TableView
• Added support for setting columns movable in TableView
• 添加 Switch type
• 添加 BusyIndicator type
• Simplified deployment

Qt Quick Dialogs 模块

• 添加新 FontDialog type

Qt Quick Layouts 模块

• Added baseline support to layout

Qt Network 模块

• Added public methods to pre-TCP and pre-SSL-connect to QNetworkAccessManager
• Added API to persist and resume SSL sessions to QSslConfiguration
• Added support for allowing for debugging SSL traffic with Wireshark or tcpdump
• Add public member bearerTypeFamily() to QNetworkConfiguration

moc 新特征

• 添加 -M argument to add plugin metadata from the command line

Accessibility New Features

• Enabled accessibility on Mac
• Made the APIs public so that it is possible to implement accessibility for custom widgets
• Basic accessibility support for Android

WebKit 新特征

• Added CSS blending
• Improved the threaded garbage collection
• Added support for LLInt on x87 (old x86 without SSE2)
• Added Improvements to standard support in HTML5 Canvas, CSS Grid, CSS Shapes, CSS filters, and other features

API 变化列表

以下页面包含 Qt 5.2 中的 API 变化列表

• Qt 5.2 中的新类和函数
• 过时类

其它 Qt 5 发行的补充

• Qt 5.4 的新功能
• Qt 5.3 的新功能
• Qt 5.1 的新功能
• Qt 5.0 的新功能

内容

• 新模块

• 支持新的平台

• Android

• iOS

• Qt Creator 更新

• 安装更新

• Qt 5.2 中的新特征

• Qt Core 模块

• Qt GUI 模块

• Qt Widgets 模块

• Qt Print Support 模块

• Qt QML 模块

• Qt Quick 模块

• Qt Quick Controls 模块

• Qt Quick Dialogs 模块

• Qt Quick Layouts 模块

• Qt Network 模块

• moc 新特征

• Accessibility New Features

• WebKit 新特征

• API 变化列表

• 其它 Qt 5 发行的补充