314 lines
11 KiB
Plaintext
314 lines
11 KiB
Plaintext
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Qt 3.3 introduces many new features as well as many improvements over
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the 3.2.x series. For more details, see the online documentation which
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is included in this distribution. The documentation is also available
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at http://qt.nokia.com/doc/
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The Qt version 3.3 series is binary compatible with the 3.2.x series.
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Applications compiled for 3.2 will continue to run with 3.3.
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****************************************************************************
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* General *
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****************************************************************************
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Qt library
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----------
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Qt 3.3 is .NET enabled. This release shows how to use classes
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developed with Qt in a .NET environment. It includes an analysis of
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the different interoperability infrastructures provided by the .NET
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framework. An example demonstrates how to use both a manual approach
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with Microsoft's managed extensions to the C++ language, and also
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automated solutions based on COM and the ActiveQt framework to reuse
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native Qt classes and widgets in .NET projects. To learn more about Qt
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and .NET read the "Using Qt objects in Microsoft .NET" walkthrough
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found in the ActiveQt framework documentation.
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Qt 3.3 now supports IPv6 in addition to IPv4. New functions have been
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added for IPv6 support to QSocketDevice, QHostAddress and QDNns.
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Qt now includes a new tool class called QLocale. This class converts
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between numbers and their string representations in various languages.
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QLocale supports the concept of a default locale which allows a locale
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to be set globally for the entire application.
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Support for new 64bit platforms and compilers has been added for Qt
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3.3. Qt now supports Itanium on both Linux (Intel C++ compiler) and
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Windows (MSVC and Intel C++ Compiler). Qt 3.3 now also officially
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supports FreeBSD.
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Qt 3.3 also supports precompiled headers for Windows, Mac OS X and
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X11. To use precompiled headers when compiling your Qt application
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simply add PRECOMPILED_HEADER and then specify the header file to
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precompile in your .pro file. To learn more about precompiled headers
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see the "Using Precompiled Headers" chapter in the qmake User Guide.
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Two new database drivers have been added to the SQL module, InterBase
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and SQLite. This makes it possible to write database applications that
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do not require a database server. SQLite is provided in the Qt 3.3
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distribution and can be enabled with either -qt-sql-sqlite or
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-plugin-sql-sqlite. The InterBase plugin also works with Firebird, the
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open source version of InterBase.
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QWidget has a new function setWindowState() which is used to make a
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widget maximized, minimized, etc. This allows individual settings for
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the minimized/maximized/fullscreen properties.
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Support for semi-transparent top-level widgets on Mac OS X and Windows
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2000/XP has also been added.
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A new example, qregexptester, has been added that makes it easy to
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test QRegExps on sample strings.
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Qt 3.3 includes in addition to this, numerous bug fixes and
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improvements. Special thanks goes to KDE for their reports and
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suggestions.
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Qt/Embedded
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-----------
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Added support for SNAP graphics drivers from SciTech Software. This
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gives access to accelerated drivers for more than 150 graphics
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chipsets.
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Qt/Mac
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------
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QAccessible support has been introduced (implemented in terms of Apple's
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Universal Access API).
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Added support for Xcode project files in qmake.
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Added Tablet support for Mac OS X.
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Numerous visual improvements.
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Qt/X11
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------
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Added support for Xft2 client side fonts on X servers without the
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RENDER extension.
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Added a new configure option (-dlopen-opengl) which will remove the
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OpenGL and Xmu library dependencies in the Qt library. The functions
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used by Qt in those libraries are resolved manually using dlopen()
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when this option is used.
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Improved support for the Extended Window Manager Hints.
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Qt/Windows
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----------
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Added support for Windows Server 2003 (Win64/Itanium).
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Qt Motif Extension
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------------------
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Clipboard operations now work between Qt and Motif widgets in the same
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application. Click-to-focus works with Motif widgets that are children
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of a QMotifWidget.
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ActiveQt Extension
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------------------
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Two new functions, QAxFactory::startServer() and
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QAxFactory::stopServer(), can be used to start and stop an
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out-of-process ActiveQt server at runtime. The new functions
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QAxFactory::serverDirPath() and QAxFactory::serverFilePath() return
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the location of the COM server binary. Server binaries no longer
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need to implement a main() entry point function. A default
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implementation is used for out-of-process servers. IClassFactory2
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is supported for the development of licensed components, and
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QAxFactory supports the creation of non-visual COM objects. Class
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specific information can be provided directly in the C++ class
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declaration using the Q_CLASSINFO macro to control how objects and
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controls are registered and exposed. New helper classes and macros
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are avialable to make it even easier to expose object classes (see the
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QAxServer documentation for details).
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COM objects developed with ActiveQt are now supported in a wider range
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of clients, including Microsoft Office applications and .NET. Examples
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that demonstrate how to use the Qt objects from the examples in .NET
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languages like C# are included. QStringList is supported as a type,
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and QRect, QSize and QPoint are now supported datatypes for control
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properties and as reference parameters. Saving the controls to a
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storage or stream now includes the version number of the QDataStream
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used for the serialization (note that this might break existing
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storages).
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The QAxContainer library is now static even for shared configurations
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of Qt. This simplifies deployment and allows using both QAxServer and
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QAxContainer in one project, i.e. an OLE automatable application that
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uses COM objects itself. The semantics of QAxBase::setControl() have
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been extended to allow creating of COM objects on remote machines via
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DCOM, to create controls requiring a license key and to connect to
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already running objects. The implementation of QAxBase::dynamicCall()
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has been improved to support passing of parameter values directly in
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the function string. Three new classes, QAxScript, QAxScriptManager
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and QAxScriptEngine, can be used to script COM objects from within Qt
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applications using Windows Script Host.
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SAFEARRAY(BSTR) parameters are supported as QStringList. Calling COM
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object methods with out-parameters of type short, char and float is
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now supported (the parameters are of type int& and double& in the Qt
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wrapper), and QVariants used for out-parameters don't have to be
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initialized to the expected type. Calling QByteArray functions in
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out-of-process controls no longer returns an error code. The control's
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client side is set to zero when the container releases the control.
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Qt Designer
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-----------
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Qt Designer, Qt's visual GUI builder, has received some speed
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optimizations, along with minor improvements to the menu editor.
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Qt Assistant
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------------
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Qt Assistant now saves the states of the tab bars between runs. This
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enables users to start browsing where they ended their previous
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assistant session.
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Shortcuts for Find Next (F3) and Find Previous (Shift+F3) have been
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implemented.
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Compilers
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---------
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Qt 3.3 adds support for two new compilers. The Intel C++ compiler is
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supported on Windows, Linux and FreeBSD. GNU gcc is supported on
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Windows using MinGW.
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Qt 3.3 no longer officially supports the Sun WorkShop 5.0 compiler or the
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SGI MIPSpro o32 mode.
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****************************************************************************
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* Library *
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****************************************************************************
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- QAction
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Added a setDisabled() slot similar to QWidget::setDisabled.
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Added an activate() slot which activates the action and
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executes all connected slots.
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QActions::menuText() escapes ampersand characters ('&') when
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using the value of the text property.
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- QButtonGroup
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Added QButtonGroup::selectedId property to allow mapping with
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SQL property sets.
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- QCursor
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Added new enum value Qt::BusyCursor.
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X11 only: Added QCursor constructor taking a X11 cursor handle.
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- QDom
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The QDom classes are now reentrant.
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- QEvent
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Added new event type WindowStateChange, obsoleting ShowNormal,
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ShowMinimized, ShowMaximized and ShowFullScreen.
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- QHeader
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The sizeChange() signal is emitted when the section sizes are
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adjusted by double clicking.
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- QHostAddress
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Added new constructor for IPv6 and new functions
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isIPv6Address() and toIPv6Address(). Obsoleted the functions
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isIp4Addr() and ip4Addr(), replacing them with isIPv4Address()
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and toIPv4Address().
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- QIconView
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Improved keyboard search to behave like QListView.
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- QListView
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Improved alignment for text in QListViewItems. Right aligned
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text now has the ellipsis on the left.
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Keyboard search now uses the sort column as the column to
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start searching in.
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Improved branch drawing.
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- QLocale [new]
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This new tool class converts between numbers and their string
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representations in various languages.
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- QMacStyle
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Allow disabling of size constraints.
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- QMovie
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Added JNG support.
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- QPixmap
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Support full alpha-maps for paletted (8-bit) images.
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Support 16-bit grayscale PNG images with transparency.
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- QPushButton
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A push button with both an iconset and text left-aligns the
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text.
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- QSocketDevice
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Added setProtocol() and protocol() for IPv6 support.
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- QSound
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Windows: Support loop related APIs.
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- QSplashScreen
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Less intrusive stay-on-top policy.
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- QSql
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Support for InterBase and SQLite.
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- QStatusBar
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Draw messages with the foreground() color of the palette,
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rather than with the text() color.
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- QString
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Added support for %lc and %ls to sprintf(). %lc takes a
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Unicode character of type ushort, %ls takes a zero-terminated
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array of Unicode characters of type ushort (i.e. const
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ushort*). Also added support for precision (e.g. "%.5s").
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Changed arg() to support "%L1" for localized conversions.
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Windows only: QString::local8Bit() now returns an empty
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QCString when called on a null QString to unify behavior
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with the other platforms.
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- QStyle
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Add a new primitive element: PE_RubberBand.
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Added PM_MenuBarItemSpacing and PM_ToolBarItemSpacing pixel metrics.
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- QTextDrag
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decode() now autodetects the encoding of text/html content.
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- QTextEdit
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Reduced memory consumption by 20 bytes per line.
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Added a getter for the currently set QSyntaxHighlighter.
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- QTextBrowser
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Qt now automatically detects the charset of HTML files set
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with setSource().
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- QVariant
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Comparison between variants where one of the variants is a
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numeric value will compare on the numeric value. Type casting
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between different variants is more consistent.
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- QWidget
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Added setWindowOpacity() and windowOpacity() to support
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transparent top-level widgets on Windows and Mac.
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Added windowState() and setWindowState() to allow individual
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setting of the minimized/maximized/fullscreen properties.
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- QWindowsStyle
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Qt supports toggling of the accelerator underlines using the
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Alt-key on Windows 98, 2000 and later. On other platforms this
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change has no effect.
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