693 lines
17 KiB
Plaintext
693 lines
17 KiB
Plaintext
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Qt 3.1 introduces many significant new features and many improvements
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over the 3.0.x series. This file provides an overview of the main
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changes since version 3.0.5. For further details see the online
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documentation which is included in this distribution, and also
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available at http://qt.nokia.com/doc/.
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The Qt version 3.1 series is binary compatible with the 3.0.x series:
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applications compiled for 3.0 will continue to run with 3.1.
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****************************************************************************
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* General *
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****************************************************************************
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Qt Script for Applications
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--------------------------
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Qt 3.1 is the first Qt release that can be used with Qt Script for
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Applications (QSA). QSA provides a scripting engine, an IDE for
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creating and editing scripts and script forms, and bindings to the Qt
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API. Script-enabling a Qt application is not difficult and the IDE
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makes it easy for resellers and end-users to write their own scripts.
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QSA is due for release after Qt 3.1.
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Qt Designer
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-----------
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Qt Designer, the visual GUI builder, has undergone several usability
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improvements. A new dialog for creating and editing signals and slots
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connections has been created: it is much easier to use and much faster
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for setting up multiple connections. The widgets are now presented in
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an easy-to-use toolbox rather than in toolbars (although you can still
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have the toolbars if you want). The property editor now handles common
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properties in multiple widgets simultaneously. By popular demand,
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WYSIWYG support for QWidgetStack has been added. Rich text is now
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supported with a rich text editor. And the code editor can be used for
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ordinary member functions as well as for slots.
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Qt Assistant
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------------
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Qt Assistant, the Qt documentation browser, can now be used with
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custom documentation sets. This new functionality combined with the
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new QAssistantClient class means that you can use Qt Assistant as a
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help browser for your own applications. Qt Assistant has also been
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enhanced by the addition of a fast full text search engine.
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Motif
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-----
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The general industry-wide move away from Motif is leaving more and
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more companies in need of a migration solution. But converting large
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legacy applications in one step is often impractical. To minimize
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risks and to manage the workload companies often want to port code on
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a module by module basis. Qt 3.1 includeds a completely new Motif
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module that supports hybrid applications in which Qt code and Motif
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code coexist. (This obsoletes the earlier rudimentary Qt Xt/Motif
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extension.)
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ActiveX
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-------
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With the release of Qt 3.1, customers who use Qt for Microsoft Windows
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development can now use Qt with ActiveX. The new ActiveQt module
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provides a simple API for COM and ActiveX. The module can be used to
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create applications which host ActiveX controls, and also to create
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applications that serve ActiveX controls (e.g. Internet Explorer
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plugins).
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Qt/Mac
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------
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The introduction of Qt/Mac, a Mac OS X port of Qt, with Qt 3.0 has
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proved a great success. This port has undergone many improvements in
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Qt 3.1, especially with respect to Appearance Manager, anti-aliased
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text and user settings. The Qt OpenGL support is greatly improved, and
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uses the hardware-accelerated drivers.
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Qt/Embedded
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-----------
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Graphics, mouse and keyboard drivers can now be compiled as plugins.
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Qt library
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----------
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In addition to the new additions and enhancements referred to above,
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as with all major Qt releases, Qt 3.1 includes hundreds of
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improvements in the existing class library. Here is a brief summary of
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the most significant changes:
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- QTextEdit has a new text format: LogText. This is a performance and
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memory optimized format especially designed for the fast display of
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large amounts of text. The format supports basic highlighting,
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including bold and colored text.
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- The new QSyntaxHighlighter class makes it both easy and efficient to
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add syntax highlighting capabilities to a QTextEdit.
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- QHttp and QFtp in earlier Qt's were implementations of the
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QNetworkProtocol. Both have been extended to stand in their own
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right. If you missed some flexibility in the network protocol
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abstractions of earlier Qt's, the new QHttp and QFtp classes should
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provide the solution.
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- QAccel, used to handle keyboard shortcuts, now gracefully copes with
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shortcut clashes. If a clash occurs, a new signal,
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activatedAmbiguously(), is emitted. Classes that use QAccel, like
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QButton and QPopupMenu, make use of this new functionality.
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Futhermore QAccel can now handle multi-key sequences, for example,
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Ctrl+X,Ctrl+F.
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- QClipboard has been extended to simplify data exchange between
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programs.
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- Thread support: almost all methods in the tools classes have been
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made reentrant. QApplication::postEvent() and a few other methods
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are now thread-safe if Qt is compiled as a multi-threaded library.
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(The documentation now states if a class or function is thread-safe
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or reentrant.)
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- A QMutexLocker class has been added to simplify the locking and
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unlocking of mutexes.
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- Input methods: A selectionLength() function has been added to
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QIMEvent. Japanese compositions are now handled correctly. Support
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for AIMM based input methods (those working on non-Asian versions of
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Win95/98/Me) has been added.
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- Large File support: Qt's internals have been modified to support
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Large Files (> 2GB). QFileDialog will now correctly display and
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select Large Files.
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- SQL module: Support for prepared query execution and value binding
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has been added. Among other benefits, this makes it possible to
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write large BLOBs (> 2 KB) to Oracle databases, and to write Unicode
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strings to SQL Server databases.
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Build process
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-------------
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The build process has been improved:
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- The configure script does not need QTDIR to be set anymore.
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****************************************************************************
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* Library *
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****************************************************************************
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New classes
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==================
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- QBackInsertIterator
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- QEventLoop
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- QIconFactory
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- QMutexLocker
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- QSyntaxHighlighter
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QAction
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------------------
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New functions:
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void setVisible( bool )
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bool isVisible() const
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QCanvas
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------------------
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New functions:
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void invalidate()
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bool isValid() const
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QColorDialog
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------------------
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New functions:
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static void setStandardColor( int, QRgb )
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QAccel
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------------------
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New signals:
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void activatedAmbiguously( int id )
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QApplication
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------------------
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The event loop has been moved to the QEventLoop class, making it
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easier to integrate other toolkits with Qt.
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New functions:
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QEventLoop *eventLoop() const
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void setEventLoop( QEventLoop * )
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QString sessionKey() const
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QClipboard
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------------------
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New functions:
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void clear( Mode mode )
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bool supportsSelection() const
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bool ownsSelection() const
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bool ownsClipboard() const
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QString text( Mode mode ) const
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QString text( QCString& subtype, Mode mode ) const
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void setText( const QString &, Mode mode )
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QMimeSource *data( Mode mode ) const
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void setData( QMimeSource*, Mode mode )
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QImage image( Mode mode ) const
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QPixmap pixmap( Mode mode ) const
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void setImage( const QImage &, Mode mode )
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void setPixmap( const QPixmap &, Mode mode )
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QDesktopWidget
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------------------
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New functions:
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const QRect& screenGeometry( QWidget *widget ) const
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const QRect& screenGeometry( const QPoint &point ) const
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const QRect& availableGeometry( int screen ) const
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const QRect& availableGeometry( QWidget *widget ) const
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const QRect& availableGeometry( const QPoint &point ) const
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QFileDialog
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------------------
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Large Files (> 2GB) are now correctly displayed and selected.
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QFileInfo
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------------------
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QFileInfo now supports Large Files (> 2GB) internally. To maintain
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binary compatibility the QFileInfo API cannot be adapted before Qt 4
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and will truncate file sizes and offsets to 4 GB.
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New functions:
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bool isHidden() const
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QFile
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------------------
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QFile now supports Large Files (> 2GB) internally. To maintain binary
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compatibility the QFile API cannot be adapted before Qt 4 and will
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truncate file sizes and offsets to 4 GB.
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QDir
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------------------
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QDir now supports Large Files (> 2GB).
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QImEvent
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------------------
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New functions:
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in selectionLength() const
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QIconSet
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------------------
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New functions:
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void installIconFactory( QIconFactory *factory )
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QImage
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------------------
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New functions:
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static QImage fromMimeSource( const QString& abs_name )
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QMetaObject
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------------------
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New functions:
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QStrList enumeratorNames( bool super ) const
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int numEnumerators( bool super ) const
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static bool hasMetaObject( const char *class_name )
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QMenuData
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------------------
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New functions:
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bool isItemVisible( int id ) const
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void setItemVisible( int id, bool visible )
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Both functions are inherited by QMenuBar and QPopupMenu
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QPaintDevice
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------------------
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New functions (x11 only):
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static Qt::HANDLE x11AppRootWindow()
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static int x11AppDepth( int screen )
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static int x11AppCells( int screen )
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static Qt::HANDLE x11AppRootWindow( int screen )
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static Qt::HANDLE x11AppColormap( int screen )
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static void *x11AppVisual( int screen )
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static bool x11AppDefaultColormap( int screen )
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static bool x11AppDefaultVisual( int screen )
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static int x11AppDpiX( int )
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static int x11AppDpiY( int )
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static void x11SetAppDpiX( int, int )
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static void x11SetAppDpiY( int, int )
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QPicture
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------------------
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New functions:
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void setBoundingRect( const QRect &r )
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QPixmap
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------------------
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New functions:
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bool hasAlpha() const
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static QPixmap fromMimeSource( const QString& abs_name )
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QPrinter
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------------------
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New functions:
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void setMargins( uint top, uint left, uint bottom, uint right )
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void margins( uint *top, uint *left, uint *bottom, uint *right ) const
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Improvements:
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Handle masked images and pixmaps correctly. Add code to handle
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asymmetrical printer margins correctly.
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QSessionManager
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------------------
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New functions:
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QString sessionKey() const
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QStyleOption
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------------------
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New functions:
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QStyleOption( QCheckListItem* i )
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QCheckListItem* checkListItem() const
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New enums values:
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PE_CheckListController, PE_CheckListIndicator,
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PE_CheckListExclusiveIndicator, PE_PanelGroupBox
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CE_MenuBarEmptyArea
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CE_DockWindowEmptyArea
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PM_CheckListButtonSize
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CT_TabBarTab, CT_Slider, CT_Header, CT_LineEdit
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SH_GroupBox_TextLabelVerticalAlignment
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QThread
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------------------
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New functions:
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void terminate()
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QTranslator
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------------------
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New functions:
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bool load( const uchar *data, int len )
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QVariant
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------------------
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New functions:
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QVariant( const QPen& )
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const QPen toPen() const
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QPen& asPen()
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bool isNull() const
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New enum values:
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KeySequence, Pen
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QWidget
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------------------
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All top-level widgets will now try to find an appropriate application
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icon when they're not given one, trying in this order
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1. Parent widget's icon
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2. Top-level widget's icon
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3. Application main widget's icon
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New functions:
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bool isFullScreen() const
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void setSizePolicy( QSizePolicy::SizeType hor, QSizePolicy::SizeType ver, bool hfw = FALSE )
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New enum values:
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AncestorOrigin
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QWMatrix
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------------------
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Two different transformation modes for painter transformations are now
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available. See the QWMatrix documentation for details.
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New functions:
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QPointArray mapToPolygon( const QRect &r ) const
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double det() const
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static void setTransformationMode( QWMatrix::TransformationMode m )
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static TransformationMode transformationMode()
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New enums:
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TransformationMode { Points, Areas }
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QFtp
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------------------
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While still remaining a subclass of QNetworkProtocol, QFtp can be now
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used directly for more advanced FTP operations. The QFtp documentation
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provides details of the extensions to the API.
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QHttp
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------------------
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While still remaining a subclass of QNetworkProtocol, QHttp can be now
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used directly for more advanced HTTP operations. The QHttp
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documentation provides details of the extensions to the API.
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||
|
|
Related new classes:
|
||
|
|
QHttpHeader
|
||
|
|
QHttpResponseHeader
|
||
|
|
QHttpRequestHeader
|
||
|
|
|
||
|
|
|
||
|
|
QSqlDriver
|
||
|
|
------------------
|
||
|
|
New enum values:
|
||
|
|
Unicode, PreparedQueries, OracleBindingStyle, ODBCBindingStyle
|
||
|
|
|
||
|
|
|
||
|
|
QSqlQuery
|
||
|
|
------------------
|
||
|
|
New functions:
|
||
|
|
bool isForwardOnly() const
|
||
|
|
void setForwardOnly( bool forward )
|
||
|
|
bool exec()
|
||
|
|
bool prepare( const QString& query )
|
||
|
|
void bindValue( const QString& placeholder, const QVariant& val )
|
||
|
|
void bindValue( int pos, const QVariant& val )
|
||
|
|
void addBindValue( const QVariant& val )
|
||
|
|
|
||
|
|
|
||
|
|
QTableSelection
|
||
|
|
------------------
|
||
|
|
New functions:
|
||
|
|
QTableSelection( int start_row, int start_col, int end_row, int end_col )
|
||
|
|
|
||
|
|
|
||
|
|
QTable
|
||
|
|
------------------
|
||
|
|
New properties:
|
||
|
|
int numSelections
|
||
|
|
|
||
|
|
New functions:
|
||
|
|
void selectCells( int start_row, int start_col, int end_row, int end_col )
|
||
|
|
void selectRow( int row )
|
||
|
|
void selectColumn( int col )
|
||
|
|
void updateHeaderStates()
|
||
|
|
void setRowLabels( const QStringList &labels )
|
||
|
|
void setColumnLabels( const QStringList &labels )
|
||
|
|
|
||
|
|
|
||
|
|
QCString
|
||
|
|
------------------
|
||
|
|
New functions:
|
||
|
|
QCString &replace( char c, const char *after )
|
||
|
|
QCString &replace( const char *, const char * )
|
||
|
|
QCString &replace( char, char )
|
||
|
|
|
||
|
|
New global functions:
|
||
|
|
QByteArray qCompress( const uchar* data, int nbytes )
|
||
|
|
QByteArray qUncompress( const uchar* data, int nbytes )
|
||
|
|
QByteArray qCompress( const QByteArray& data )
|
||
|
|
QByteArray qUncompress( const QByteArray& data )
|
||
|
|
Improvements:
|
||
|
|
Speed optimisations in lots of the old search and replace
|
||
|
|
functions.
|
||
|
|
|
||
|
|
|
||
|
|
QDate
|
||
|
|
------------------
|
||
|
|
New functions:
|
||
|
|
int weekNumber( int *yearNum = 0 ) const
|
||
|
|
static QDate currentDate( Qt::DateTimeSpec )
|
||
|
|
|
||
|
|
|
||
|
|
QTime
|
||
|
|
------------------
|
||
|
|
New functions:
|
||
|
|
static QTime currentTime( Qt::DateTimeSpec )
|
||
|
|
|
||
|
|
|
||
|
|
QDateTime
|
||
|
|
------------------
|
||
|
|
New functions:
|
||
|
|
static QDateTime currentDateTime( Qt::DateTimeSpec )
|
||
|
|
|
||
|
|
|
||
|
|
QPtrList
|
||
|
|
------------------
|
||
|
|
New functions:
|
||
|
|
bool replace( uint i, const type *d )
|
||
|
|
|
||
|
|
|
||
|
|
QRegExp
|
||
|
|
------------------
|
||
|
|
New functions:
|
||
|
|
QString errorString()
|
||
|
|
static QString escape( const QString& str )
|
||
|
|
int numCaptures() const
|
||
|
|
|
||
|
|
|
||
|
|
QSettings
|
||
|
|
------------------
|
||
|
|
New functions:
|
||
|
|
QSettings( Format format )
|
||
|
|
void setPath( const QString &domain, const QString &product, Scope = User )
|
||
|
|
void beginGroup( const QString &group )
|
||
|
|
void endGroup()
|
||
|
|
void resetGroup()
|
||
|
|
QString group() const
|
||
|
|
|
||
|
|
New enums:
|
||
|
|
Format { Native = 0, Ini }
|
||
|
|
Scope { User, Global }
|
||
|
|
|
||
|
|
|
||
|
|
QChar
|
||
|
|
------------------
|
||
|
|
Updated Unicode tables to Unicode-3.2
|
||
|
|
|
||
|
|
|
||
|
|
QString
|
||
|
|
------------------
|
||
|
|
New functions:
|
||
|
|
QString &append( const QByteArray & )
|
||
|
|
QString &append( const char * )
|
||
|
|
QString &prepend( const QByteArray & )
|
||
|
|
QString &prepend( const char * )
|
||
|
|
QString &remove( QChar c )
|
||
|
|
QString &remove( char c )
|
||
|
|
QString &remove( const QString & )
|
||
|
|
QString &remove( const QRegExp & )
|
||
|
|
QString &remove( const char * )
|
||
|
|
QString &replace( uint index, uint len, QChar )
|
||
|
|
QString &replace( uint index, uint len, char c )
|
||
|
|
QString &replace( QChar c, const QString & )
|
||
|
|
QString &replace( char c, const QString & after )
|
||
|
|
QString &replace( const QString &, const QString & )
|
||
|
|
QString &replace( QChar, QChar )
|
||
|
|
QString &operator+=( const QByteArray &str )
|
||
|
|
QString &operator+=( const char *str )
|
||
|
|
static QString fromUcs2( const unsigned short *ucs2 )
|
||
|
|
const unsigned short *ucs2() const
|
||
|
|
|
||
|
|
Improvements:
|
||
|
|
find(), findRev() and contains() use either a fast hashing
|
||
|
|
algorithm (for short strings) or an optimized Boyer-Moore
|
||
|
|
implementation for long strings. Lots of smaller performance
|
||
|
|
optimisations.
|
||
|
|
|
||
|
|
|
||
|
|
QTextStream
|
||
|
|
------------------
|
||
|
|
New functions:
|
||
|
|
QTextCodec *codec()
|
||
|
|
|
||
|
|
|
||
|
|
QTimeEdit
|
||
|
|
------------------
|
||
|
|
New properties:
|
||
|
|
Display display
|
||
|
|
|
||
|
|
New functions:
|
||
|
|
uint display() const
|
||
|
|
void setDisplay( uint )
|
||
|
|
|
||
|
|
New enums:
|
||
|
|
Display { Hours, Minutes, Seconds, AMPM }
|
||
|
|
|
||
|
|
|
||
|
|
QFrame
|
||
|
|
------------------
|
||
|
|
New enum values:
|
||
|
|
GroupBoxPanel
|
||
|
|
|
||
|
|
|
||
|
|
QGroupBox
|
||
|
|
------------------
|
||
|
|
New properties:
|
||
|
|
bool flat
|
||
|
|
|
||
|
|
New functions:
|
||
|
|
bool isFlat() const
|
||
|
|
void setFlat( bool b )
|
||
|
|
|
||
|
|
|
||
|
|
QListBox
|
||
|
|
------------------
|
||
|
|
New functions:
|
||
|
|
QListBoxItem* selectedItem() const
|
||
|
|
|
||
|
|
|
||
|
|
QListView
|
||
|
|
------------------
|
||
|
|
New functions:
|
||
|
|
int sortColumn() const
|
||
|
|
|
||
|
|
|
||
|
|
QSlider
|
||
|
|
------------------
|
||
|
|
New functions:
|
||
|
|
void addLine() ( as slot)
|
||
|
|
void subtractLine() (as slot)
|
||
|
|
|
||
|
|
|
||
|
|
QTextBrowser
|
||
|
|
------------------
|
||
|
|
New functions:
|
||
|
|
void sourceChanged( const QString& )
|
||
|
|
void anchorClicked( const QString&, const QString& )
|
||
|
|
|
||
|
|
|
||
|
|
QTextEdit
|
||
|
|
------------------
|
||
|
|
QTextEdit offers another TextFormat (LogText), which is optimized
|
||
|
|
(speed and memory) for displaying large read-only texts normally used
|
||
|
|
for logging.
|
||
|
|
|
||
|
|
New properties:
|
||
|
|
bool allowTabs
|
||
|
|
|
||
|
|
New functions:
|
||
|
|
QString anchorAt( const QPoint& pos, AnchorAttribute a )
|
||
|
|
void setAllowTabs( bool b )
|
||
|
|
bool allowTabs() const
|
||
|
|
void insert( const QString &text, uint insertionFlags = CheckNewLines | RemoveSelected )
|
||
|
|
|
||
|
|
New signals:
|
||
|
|
void clicked( int parag, int index )
|
||
|
|
void doubleClicked( int parag, int index )
|
||
|
|
|
||
|
|
New enums:
|
||
|
|
TextInsertionFlags { RedoIndentation, CheckNewLines, RemoveSelected }
|
||
|
|
|
||
|
|
New enum values:
|
||
|
|
AtWordOrDocumentBoundary
|
||
|
|
|
||
|
|
|
||
|
|
QToolButton
|
||
|
|
------------------
|
||
|
|
New properties:
|
||
|
|
TextPosition textPosition
|
||
|
|
|
||
|
|
New functions:
|
||
|
|
TextPosition textPosition() const
|
||
|
|
void setTextPosition( TextPosition pos )
|
||
|
|
|
||
|
|
New enums:
|
||
|
|
TextPosition { Right, Under }
|
||
|
|
|
||
|
|
|
||
|
|
QTooltip
|
||
|
|
------------------
|
||
|
|
New functions:
|
||
|
|
static void setWakeUpDelay( int )
|
||
|
|
|
||
|
|
|
||
|
|
QWhatsThis
|
||
|
|
------------------
|
||
|
|
New functions:
|
||
|
|
static void setFont( const QFont &font )
|
||
|
|
|
||
|
|
|
||
|
|
QDomDocument
|
||
|
|
------------------
|
||
|
|
New functions:
|
||
|
|
QString toString( int ) const
|
||
|
|
QCString toCString( int ) const
|
||
|
|
|
||
|
|
|
||
|
|
QFont on X11
|
||
|
|
------------------
|
||
|
|
Improvements:
|
||
|
|
Safe handling of huge font sizes. Added support for the new
|
||
|
|
Xft2 font library on XFree-4.x.
|
||
|
|
|
||
|
|
|
||
|
|
QRegion on X11
|
||
|
|
------------------
|
||
|
|
Improvements:
|
||
|
|
Removed the 16 bit size limitation
|
||
|
|
|
||
|
|
****************************************************************************
|