Qt 5.1 的新功能

Qt 5.1 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 5.0.

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

New modules add more functionality for developers to use on various platforms.

Qt Quick Controls - a set of reusable UI controls. Qt 5.1 targets desktop platforms, while future releases will include more features useful on touch devices.
Qt Quick Layouts - provides layouts for Qt Quick
Qt Quick Dialogs - 包含用于采用系统对话框创建和交互的类型
Qt X11 Extras - adds platform specific APIs for X11
Qt Sensors - provides access to sensor hardware and motion gesture recognition both via QML and C++ interfaces. Supports Android , BlackBerry, iOS , and Mer platforms.
Qt Serial Port - provides an interface for hardware and virtual serial ports

The 所有模块 page contains a list of all modules in Qt 5.1.

新的支持平台

Qt 5.1 introduces support for following new platforms with technology preview status:

Qt for Android (技术预览)
Qt for iOS (技术预览)

变化摘要

moc 变化

New keyword in Q_PROPERTY (), MEMBER , lets you bind a property to a class member without requiring to have a getter or a setter.

qmake 变化

On Windows: Added support for specifying application icon (via RC_ICONS ).

Qt Core 变化

Added support for SHA3 to QCryptographicHash
Added toInt(), toUInt(), and similar functions to QStringRef
A new threadsafe initialization of global statics through refactored Q_GLOBAL_STATIC .
A new class, QLockFile , provides locking between processes using a file. This lock enables applications to check that there is only one instance of it running.
A new class, QSaveFile , provides transaction such as file writing.

Qt GUI 变化

Support for embedding and reparenting of windows created from other processes, via QWindow::fromWinId ().
QWidget::createWindowContainer () adds the capability to embed QWindow 实例，譬如 QQuickView 或 QWindow 使用 QOpenGLContext , into a QWidget hierarchy.
Support for kerning advances in QRawFont::advancesForGlyphIndexes .
QImageReader and QImageWriter adds the ability to report supported MimeTypes.
New input method plugin, QComposeInputContext.
New GTK+ 2.x platformtheme plugin that provides native file, font, and color dialogs.
New class, QOpenGLContext::versionFunctions (), provides access to all OpenGL functions.
New QOpenGLTimerQuery and QOpenGLTimeMonitor 类。
New QOpenGLDebugLogger class expose KHR_debug extension for easy debugging.
Added support for Geometry, Tessellation Control, Tessellation Evaluation, and Compute shaders to QOpenGLShader and QOpenGLShaderProgram .
New QOpenGLVertexArrayObject 类。

Qt Network 变化

New encrypted() signal to QNetworkAccessManager and QNetworkReply so that applications can perform additional checks on the certificate chain.
Support for sending intermediate certificates when QSslSocket is used as a server and when using client certificates.
Support for SSL session reuse allowing much faster connections to servers.

Qt QML 变化

New QQmlApplicationEngine convenience class for QML applications.
New Instantiatior type for generic, dynamic object creation.
New QtQml.Models module containing ListElement , ListModel , DelegateModel , DelegateModelGroup ，和 ObjectModel .
New properties for Qt::application : arguments, name, and version.

Qt Quick 变化

New threaded render loop for Mac, Linux, and Embedded.
New render loop for windows for smoother animations.
New Qt Quick Dialogs submodule with FileDialog and ColorDialog 类型。
New Window properties: activeFocusItem, minimumWidth, minimumHeight, maximumWidth, maximumHeight, visibility, contentOrientation, and opacity.
New Item property: activeFocusOnTab.
New Grid properties: horizontalAlignment, verticalAlignment, and effectiveHorizontalAlignment.
New TextEdit properties: selectByKeyboard and textDocument
A Window declared inside another Window or Item will automatically be transient for (centered upon) the outer window.

Qt WebKit 变化

JavaScript JIT on Windows 64 bit.
Improved font rendering, kerning enabled by default.
Improved garbage collection.
支持 WOFF 字体。
Support for WebGL without accelerated compositing.
支持 GStreamer 1.0。
Improved perceived page load performance and support for Link prefetch.

Qt Widgets 变化

Added property toolTipsVisible in QMenu .

Qt Creator 兼容性

Qt Creator 2.7 complements this Qt release with the most prominent new features:

Improved C++11 code editing support
Qt Quick Designer with full support for Qt Quick
Android development target
Experimental QBS and diff integration

其它新特征

还原支持静态 Qt 构建

API 变化列表

以下页面包含 Qt 5.1 中的 API 变化列表

内容