Long live Qt!

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+Qt 3.0 Beta4 is not binary compatible with Beta3; any programs linked
+against Beta3 must be recompiled.
+
+Below you will find a description of general changes in the Qt
+Library and Qt Designer followed by a detailed list of changes in the
+API.
+
+
+The Qt Library
+========================================
+
+Documentation
+-------------
+
+The extensive revision of the documentation is almost complete.
+We have added new navigation options, including a shorter list
+of classes entitled Main Classes.
+
+Translations
+------------
+
+Qt now includes French and German translations of the Qt library, as
+well as a template for translating Qt. These files are found in the
+translations directory of Qt, in both .ts and .qm formats.
+
+Style Fixes
+-----------
+
+Qt 3.0.0 beta2 introduced a new QStyle API. This new API has changed
+between beta3 and beta4. These changes will affect both widget
+writers and style writers. The QStyle entry below explains what has
+changed.
+
+Beta4 also introduces some fixes for bugs introduced during the port
+to the new API in various widgets, notably QComboBox and QSlider.
+
+LiveConnect Plugin
+------------------
+
+A few bugs were fixed in the LiveConnect Plugin so that the grapher
+example works again on Windows.
+
+
+Qt Designer
+========================================
+
+ - General usability improvements and bug fixes, and improved file
+   and project handling.
+ - Updated designer manual to cover the .ui.h mechanism.
+ - New auto-indentation algorithm in the code editor.
+
+
+Qt Assistant
+========================================
+
+ - Added a Settings dialog and made more features customizable.
+ - Sessions are now saved and restored.
+ - A brief introduction to using Qt Assistant is now included.
+
+
+Qt Linguist
+========================================
+
+ - Phrase books are now provided in tools/linguist/phrasebooks.
+ - Added support for Qt Designer's .ui.h mechanism to lupdate.
+ - Support for a larger subset of .pro file syntax in lupdate and
+   lrelease.
+
+
+Qt Functions
+========================================
+
+QApplication
+------------
+
+ - Ignore drag-and-drop events for disabled widgets.
+ - Always send ChildRemoved events, even if no ChildInserted event
+   was sent.
+ - Mouse events for popup menus are now sent to event filters.
+
+QCanvasItem
+-----------
+
+ - The functions visible(), selected() and active() have been renamed
+   setVisible(), setSelected() and setActive().
+
+New functions:
+	bool isVisible() const;
+	bool isSelected() const;
+	bool isActive() const;
+
+Removed functions:
+	bool visible() const;
+	bool selected() const;
+	bool active() const;
+
+QCanvasText
+-----------
+
+ - Fixed alignment flags.
+
+QChar
+-----
+
+New function:
+	bool isSymbol() const;
+
+QCheckBox
+---------
+
+ - Fixed a bug in pixmap caching which could result in using the
+   wrong pixmap.
+
+QCheckListItem
+--------------
+
+ - After a mouse click, the list view ignores the following double
+   click as in Windows XP.
+
+QClipboard
+----------
+
+ - Made clipboard operations faster on X11.
+
+QColorDialog
+------------
+
+ - Never show scrollbars in the color array.
+
+QComboBox
+---------
+
+ - Comboboxes are now drawn correctly in all styles.
+ - Fixed bug with auto completion. There was undefined behavior with
+   non-editable comboboxes when changing focus.
+
+New function:
+	virtual void setCurrentText( const QString& );
+
+New property:
+	QString currentText
+
+QDataBrowser
+------------
+
+ - The setCursor() function is obsolete and will be removed for Qt 3
+   release due to the incompatibility with some compilers. Use
+   setSqlCursor() instead.
+
+QDataTable
+----------
+
+ - Dates and times in tables can now be displayed in different
+   display formats.
+ - The setCursor() function is obsolete and will be removed for Qt 3
+   release due to the incompatibility with some compilers. Use
+   setSqlCursor() instead.
+
+QDateEdit
+---------
+
+ - The default separator and the day-month-year order respect the
+   user's settings.
+ - Pressing the separator key now skips to the next section.
+ - Fixed a usability flaw related to some months being longer than
+   others.
+
+New functions:
+	QString separator() const;
+	virtual void setSeparator( const QString& s );
+
+QDateTime
+---------
+
+ - Always initialize the tm struct completely. This fixes a problem
+   on some versions of Unix.
+
+QDir
+----
+
+ - QDir::homeDirectory() now always returns an existing directory on
+   Windows.
+
+QDockWindows
+------------
+
+ - Fixed dockwindows created in non-dock areas.
+ - Fixed constructor if InDock and the parent is a QMainWindow.
+
+QDom...
+-------
+
+ - Fixes in the conversion of the DOM tree to a string.
+
+QDomNodeList
+------------
+
+ - Fixed a crash.
+
+QFileDialog
+-----------
+
+ - Select contents of the line edit at startup (if any) so that the
+   user can overwrite the provided file name right away.
+
+QFileInfo
+---------
+
+ - In adition to lastModified() and lastRead(), provide created().
+
+New function:
+	QDateTime created() const;
+
+QFont
+-----
+
+ - Provide more correct font metrics under X11.
+ - Worked around X11 limits on length of strings to draw and on
+   coordinate sizes.
+ - Fixed sone point vs. pixel size issues under X11.
+ - Added PreferAntialias and NoAntialias flags to StyleStrategy enum
+   type.
+
+QFtp
+----
+
+ - Fixed a QSocket bug that made QFtp crash if the connection was
+   refused.
+ - Fixed operationRename() and operationRemove().
+ - Set the right state when finished.
+
+QGIFFormat
+----------
+
+ - Support GIF files with broken logical screen size.
+
+QHeader
+-------
+
+ - Added support for '\n' in header labels.
+ - Improved placement of icon.
+
+QHttp
+-----
+
+ - If the status code of the reply is an error code, it is now also
+   reflected in the status of the network operation. The error
+   handling in general was improved.
+
+QImageIO
+--------
+
+ - Allow gamma correction to be set programmatically.
+
+New functions:
+	void setGamma( float gamma );
+	float gamma() const;
+
+QKeyEvent
+---------
+
+ - Worked around an X11 bug in isAutoRepeat().
+
+QKeySequence
+------------
+
+A new class that encapsulates a key sequence as used by accelerators.
+
+QLabel
+------
+
+ - Made the WordBreak alignment property work with rich text labels
+   in addition to plain text labels.
+
+QLayout
+-------
+
+ - Fixed crashes with deleting widgets managed by the layout.
+ - Fixed problems with reparenting widgets managed by the layout.
+ - Respect maximumHeight() of items in heightForWidth().
+
+QLibrary
+--------
+
+ - Plugins now return the version number, threading model and debug
+   vs. release mode of the Qt library used in ucm_initialize(). If
+   there is any kind of incompatibility, cancel the loading.
+
+QLineEdit
+---------
+
+ - Update the "edited" flag and the accessibility data better than
+   before.
+ - Fixed setMaxLength().
+ - Fixed context menu problem on Windows.
+
+New functions:
+	bool isUndoAvailable() const;
+	bool isRedoAvailable() const;
+
+QListViewItem
+-------------
+
+ - Fixed setVisible(TRUE) which triggered an update too soon.
+
+QMenuBar
+--------
+
+ - Cancel alt-activation of menubar on mouse press/release.
+ - On wheel events, all popup menus are now closed instead of hidden.
+   Hiding popup menus confused QMenuBar.
+
+QObject
+-------
+
+ - Have QObject dispatch events to customEvents().
+
+QPainter
+--------
+
+ - Renamed the enum type ClipMode to CoordinateMode. The enum values
+   ClipDevice and ClipPainter are now called CoordDevice and
+   CoordPainter.
+ - Fixed escaping of ampersand character, so "&&", "&&&", etc., now
+   work as they did in Qt 2.x.
+
+New functions:
+	void drawPixmap( const QRect& r, const QPixmap& pm );
+	void drawImage( const QRect& r, const QImage& img );
+
+QPicture
+--------
+
+ - Respect the size of a loaded SVG document.
+ - Solved a replay-transformed-picture problem.
+ - Fixed format version number.
+
+QPluginManager
+--------------
+
+ - Fixed crash when loading a plugin fails.
+
+QPopupMenu
+----------
+
+ - Custom menu items that are separators now see their size hint
+   respected.
+ - Fixed crash when drawing an empty popup menu.
+
+QPrinter
+--------
+
+ - Better printing in different resolutions under both Windows and
+   X11.
+ - Support for collation under Windows and X11.
+ - Correct bounding rectangles for texts in all printer modes.
+ - Fixed pixmap printing on Windows.
+ - Fixed PostScript font names for fonts with foundries.
+ - Support for PostScript printing of scaled images.
+
+New functions:
+	bool collateCopiesEnabled() const;
+	void setCollateCopiesEnabled( bool enable ) const;
+	bool collateCopies() const;
+	void setCollateCopies( bool on );
+	int winPageSize() const; /* Windows only */
+
+QProcess
+--------
+
+ - The function hangUp() was renamed to tryTerminate() to make the
+   purpose more clear. Furthermore, under Unix, the signal that is
+   sent was changed from SIGHUP to SIGTERM.
+ - The function kill() and the function tryTerminate() (formerly
+   hangUp()) were made slots.
+
+New slots:
+	void tryTerminate();
+	void kill();
+
+Removed functions:
+	void hangUp();
+	void kill();
+
+QProgressBar
+------------
+
+ - Draw the progress bar correctly with respect to the properties
+   "percentageVisible", "indicatorFollowsStyle" and
+   "centerIndicator".
+
+QPtrVector
+----------
+
+ - Support null items without triggering an assert.
+
+QPushButton
+-----------
+
+ - Fixed the sizeHint() of buttons with an icon.
+
+QRegExp
+-------
+
+ - Fixed a subtle bug in regular expressions mixing anchors and
+   alternation.
+
+QRegion
+-------
+
+ - Don't crash when creating a QRegion from an empty point array.
+
+QRichText
+---------
+
+ - Improved alignment support, including nested alignments.
+ - Improved table margin support.
+ - Improved page break algorithm.
+ - Do not eat '\n' in preformatted items.
+ - Do not draw the internal trailing space at the end of a paragraph.
+ - Fixed link underlining in table cells and other subdocuments.
+ - Use larger vertical margin between paragraphs.
+ - Display paragraph spacing even when printing.
+ - Support vertical table cell alignment.
+ - Fix for floating items and table cell size calculation.
+ - Improved allignment handling.
+ - Offset fixes for tabs.
+ - Better <div> support.
+ - Fixed <br> tag.
+ - Fix for the <center> tag and centering tables.
+ - Fixed &nbsp; and <nobr>.
+ - Fixed off-by-one bug in gotoWordLeft() and gotoWordRight().
+ - Better positioning of super- and subscripts.
+ - Faster printing of large tables by using a clipping rectangle.
+ - Improved high-resolution printing.
+ - Correct sizes for images when printing.
+ - Fixed list painting when printing.
+ - Use right background for printing.
+
+QScrollBar
+----------
+
+ - Made setValue() a slot.
+
+New slot:
+	void setValue( int );
+
+Removed function:
+	void setValue( int );
+
+QSettings
+---------
+
+ - Added support for QStringLists without requiring a distinct
+   separator.
+ - Added support for null strings, empty lists and null strings in
+   lists.
+ - Fixed bug with values ending with a backslash.
+ - On Unix, don't overwrite files if the user doesn't have permission.
+
+QSimpleRichText
+---------------
+
+ - Implemented vertical breaks and floating elememts.
+ - Fixed bug with borders and clipping in printing.
+ - Fixed bug in adjustSize() cache.
+
+QSizePolicy
+-----------
+
+ - Stretch factors were added to QSizePolicy.
+ - Added a new size policy: Ignored.
+
+New functions:
+	uint horStretch() const;
+	uint verStretch() const;
+	void setHorStretch( uchar sf );
+	void setVerStretch( uchar sf );
+
+QSpinBox
+--------
+
+New slot:
+	virtual void selectAll();
+
+QSqlDatabase
+------------
+
+ - QSqlDatabase now provides access to meta-data. Meta-data is stored
+   in two new classes, QSqlFieldInfo and QSqlRecordInfo. See the
+   class documentation for details.
+
+New Functions:
+	QSqlRecordInfo recordInfo ( const QString & tablename ) const
+	QSqlRecordInfo recordInfo ( const QSqlQuery & query ) const
+
+
+QSqlFieldInfo
+-------------
+
+A new class that stores meta data associated with a SQL field.
+
+QSqlRecordInfo
+--------------
+
+A new class that is keeping a set of QSqlFieldInfo objects.
+
+QStatusBar
+----------
+
+ - Don't cut off the bottom line of the border of the status bar.
+ - Respect maximumHeight() of items in the status bar.
+
+QString
+-------
+
+ - QString now provides section(), a function that parses simple
+   fields.
+ - The function similarityWith() has been removed from the API. If
+   you need it, write to qt-bugs@trolltech.com.
+
+New functions:
+	QString section( QChar sep, int start, int end,
+			 int flags = SectionDefault ) const;
+	QString section( char sep, int start, int end = 0xffffffff,
+			 int flags = SectionDefault ) const;
+	QString section( const char *substr, int start, int end = 0xffffffff,
+			 int flags = SectionDefault ) const;
+	QString section( QString substr, int start, int end = 0xffffffff,
+			 int flags = SectionDefault ) const;
+	QString section( const QRegExp &regxp, int start, int end = 0xffffffff,
+			 int flags = SectionDefault ) const;
+	
+Removed function:
+	int similarityWith( const QString& target ) const;
+
+QStyle
+------
+
+ - Changed "void **" technique to QStyleOption technique. This
+   affects the interface of most of the QStyle member functions.
+   Please read the QStyle class documentation for details.
+
+QStyleOption
+------------
+
+A new class that encapsulates extra data sent to the style API.
+
+QTabBar
+-------
+
+ - The accelerators are now working correctly after changing a tab.
+
+QTable
+------
+
+ - Fixed crash related to popup menu and cell edition.
+ - Fixed not-drawing hidden cells.
+
+QTextCodec
+----------
+
+ - Added MIME names for codecs.
+ - Improved locale detection.
+ - Fixed the ISO 8859-6.8x (Arabic) font encoding.
+
+New function:
+	const char *mimeName() const;
+
+QTextStream
+-----------
+
+ - Fixed bug with stateful QTextEncoders.
+
+QTextEdit
+---------
+
+ - Respect disabling updates.
+ - Fixed link underlining in table cells and other subdocuments.
+ - Draw cursor on focus in.
+ - Emit cursorPositionChanged() where it previously was missing.
+ - Fixed sync().
+
+New functions:
+	bool isUndoAvailable() const;
+	bool isRedoAvailable() const;
+	bool isUndoRedoEnabled() const;
+	virtual void setUndoRedoEnabled( bool enabled ) const;
+
+New property:
+	bool undoRedoEnabled
+
+QThread
+-------
+
+ - Fixed QThread::sleep() on Unix.
+
+QTime
+-----
+
+ - fromString() with format Qt::ISODate now recognizes milliseconds
+   if they are specified.
+ - Make elapsed() a const function.
+
+QTimeEdit
+---------
+
+ - The default time separator respects the user's settings.
+ - Pressing the separator key now skips to the next section.
+
+New functions:
+	QString separator() const;
+	virtual void setSeparator( const QString& s );
+
+QTooltip
+--------
+
+ - Hide active tooltips when the user switches to another application.
+ - Fixed tooltips with Windows effects enabled.
+
+QUrl
+----
+
+ - Fixed password encoding.
+
+New function:
+	bool hasPort() const;
+
+QValidator
+----------
+
+ - Let QValidator, QIntValidator, QDoubleValidator and
+   QRegExpValidator have QObject parents rather than only QWidget
+   parents.
+
+QVariant
+--------
+
+ - Added QBitArray support.
+ - The QDateTime type now supports asDate() and asTime().
+ - The QByteArray type now supports toString().
+
+New functions:
+	QVariant( const QBitArray& );
+	const QBitArray toBitArray() const;
+	QBitArray& asBitArray();
+
+QWhatsThis
+----------
+
+ - Added support for hyperlinks in "What's This?" help windows.
+
+QWidget
+-------
+
+ - Fixed crashes related to LayoutHint events.
+
+QWizard
+-------
+
+ - Made removePage() behave as documented.
+ - Fixed back() so that it skips irrelevant pages like next().
+
+QWorkspace
+----------
+
+ - Make sure that the widget state is set before the first titlebar
+   painting is triggered.
+ - Use the right pixmap for titlebar.
+ - Respects widget flags better for titlebars in QCommonStyle.
+ - Fixed move and resize in the system menu bar of workspace
+   children.
+
+QXml
+----
+
+ - Made the "prefix" xmlns map to the namespace name
+   http://www.w3.org/2000/xmlns/.
+ - Fixed default namespaces.
+
+QXmlAttributes
+--------------
+
+ - Added count() as equivalent to length() to be consistent with Qt
+   conventions.
+
+New function:
+	int count() const;