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.x. 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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+
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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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****************************************************************************+
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*                                 General                                  *+
−
****************************************************************************+
−
+
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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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+
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+
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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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+
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+
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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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+
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+
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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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+
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+
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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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+
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+
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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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+
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+
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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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+
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+
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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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+
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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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+
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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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+
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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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+
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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's subclasses and QPopupMenu, make use of this new+
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  functionality. Futhermore QAccel can now handle multi-key sequences,+
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  for example, Ctrl+X,Ctrl+F.+
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+
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- QClipboard has been extended to simplify data exchange between+
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  programs.+
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+
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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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+
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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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+
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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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+
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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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+
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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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+
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- Support for XIM on Solaris.+
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+
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Build process+
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-------------+
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The build process has been improved:+
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+
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- The configure script does not need QTDIR to be set anymore.+
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+
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- Improved support for building Qt on MSVC.NET.+
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+
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+
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****************************************************************************+
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*			   Library					   *+
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****************************************************************************+
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+
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- QAccel:+
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	Corrected illegal accelerator state when using multiple+
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	keysequences. (Resulted in no accelerator being triggered when+
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	there's a partial match). Only triggers on enabled+
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	accelerators and their enabled items. Eats all keys in a+
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	keysequence, not just the first and last.+
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+
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- QCString:+
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	Speed-optimized replace().+
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+
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- QDataStream:+
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	Applies to printable data streams only: If the version number+
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	of the device is less than 4, use the same streaming format+
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	that was used in Qt 2.3 and earlier.+
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+
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- QDataTable:+
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	Respect read-only columns. Make it possible to swap columns.+
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+
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- QDockWindow:+
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	Added a standard widget constructor (taking a QWidget *parent,+
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	const char *name and WFlags). Improved docking behavior.+
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+
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- QFileDialog:+
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	Windows only: make Qt's filedialog work properly with network+
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	paths.+
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+
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- QFontMetrics:+
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	Windows only: Fixed QFontMetrics::boundingRect( QChar c ) to+
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	work for non-TrueType fonts.+
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+
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- QHeader:+
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	Optimized the sectionSizeHint() calculation, which in turn +
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	speeds up all QHeader size/label calculations.+
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+
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- QIconFactory:+
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	Avoid infinite loops when recursively calling+
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	QPixmap::pixmap().+
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+
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- QIconView:+
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	Fixed navigation and selection with arrow keys. Some speedups+
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	when repainting.+
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+
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- QKeySequence:+
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	Treat Unicode characters in string defined sequences+
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	correctly. So, now letters like Æ, Ø and Å should work as+
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	accelerators, even through translation files.+
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+
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- QLayout:+
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	alignmentRect() respects the layout's maximum size.+
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+
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- QLineEdit:+
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	Added a lostFocus() signal. Double-clicking only uses spaces+
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	as word bounderies for the selection now, not dots, commas,+
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	etc. Support double-click+mousemove selection.+
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+
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- QListBox:+
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	Fixed the item which is passed into the contextMenuRequested()+
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	signal (this was sometimes wrong). Don't select items that are+
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	not selectable.+
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+
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- QListView:+
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	Shift selection in Extended mode now follows Windows+
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	Shift-selection standard. Erase empty area when drawing+
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	listviews without columns. Only drops on drop-enabled items+
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	that accept drops.+
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+
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- QListViewItem:+
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	Optimized size claculation for multi-line items.+
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+
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- QMainWindow:+
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	Base the minimumSizeHint() on the sizeHint()s of the left hand+
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	dock area (instead of the minimumSize()).+
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+
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- QMenuBar:+
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	Fixed broken Alt release detection. Fixed flickering. Fixed+
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	empty menubars resizing properly.+
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+
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- QObject:+
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	Fixed return value of disconnect(). Fixed disconnect()ing+
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	SIGNALs from SIGNALs and disconnect()ing multiple SLOTs with+
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	the same name from a SIGNAL.+
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+
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- QProcess:+
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	Unix only: Don't eat the file descriptors if a lot of+
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	processes (with short runtimes) are started immediately after+
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	each other.+
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+
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- QPSQLDriver:+
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	Make the driver compile with the standard PostgreSQL source+
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	distribution under Windows. Better handling of network,+
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	datetime and geometrical datatypes.+
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+
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- QRegion:+
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	Fixed setRects() to calculate the bounding rectangle+
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	correctly.+
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+
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- QScrollView:+
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	Doesn't reposition the view when the user is scrolling the+
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	view.+
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+
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- QSpinBox:+
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	Fixed setValue() so that any not-yet-interpreted input is+
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	ignored when setting a new value.+
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+
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- QString:+
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	Support QTextCodec::codecForCStrings(). Support+
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	std::string<==>QString conversion when STL support is on.+
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+
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- QSyntaxHighlighter:+
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	Added function rehighlight(). Improved internals to be more+
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	efficient (less calls to highlightParagraph() necessary).+
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+
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- QTable:+
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	Fixed Tab/BackTab handling to always work. Fixed+
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	setColumnLabels() and setRowLabels().+
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+
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- QTableItem (and subclasses):+
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	Now supports global struts. (See QApplication::globalStrut().)+
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+
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- QTDSDriver:+
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	Added support for binary datatypes.+
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+
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- QTextCodec:+
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	Added QTextCodec::codecForCStrings and QTextCodec::codecForTr.+
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+
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- QTextEdit:+
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	Fixed a painting error which resulted in areas of the textedit+
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	not being erased correctly. Make sure repainting is done after+
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	changing the underline-links setting. Renamed 'allowTabs'+
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	property to 'tabChangesFocus' (inverted value). Added a new+
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	property 'autoFormatting'. When exporting HTML also quote+
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	quotes. Fixed a background erasing bug which messed up the+
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	view.+
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+
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- QUrl:+
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	Recognize Windows drive letters not only in the form of "c:/"+
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	but also in the form "c:" (without the '/').+
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+
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- QWidget:+
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	Fixed some visibility issues.+
−
+
−
****************************************************************************+
−
*			   Qt Designer					   *+
−
****************************************************************************+
−
+
−
- Now displays the classname of "gray box" custom widgets in the gray+
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  box on the form.+
−
+
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- Accept tildes (~) in the project settings.+
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+
−
- A new command line tool conv2ui (in qt/tools/designer/tools) has+
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  been added, to convert dialog description files from different file+
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  formats to .ui files without the need to invoke Qt Designer. This+
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  tool uses the same plugins as Qt Designer for loading other dialog+
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  description files.+
−
+
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- An import filter for .kdevdlg files has been added.+
−
+
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- Actions in the action editor are now sortable.+
−
+
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- Improved usability of more dialogs (in-place renaming, drag'n'drop,+
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  etc.)+
−
+
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- Preserve creation order of forward declarations, variables, etc.+
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+
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- Save comments for actions.+
−
+
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- uic: Fixed generating code for QStringList properties.+
−
+
−
****************************************************************************+
−
*			   Qt Assistant					   *+
−
****************************************************************************+
−
+
−
- Fixed some accelerator conflicts.+
−
+
−
****************************************************************************+
−
*			   Qt Linguist					   *+
−
****************************************************************************+
−
+
−
- Handle trailing backslash in strings correctly in lupdate.+
−
+
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******************************** END ***************************************+
−