Long live Qt for S60!

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+Qt 4.2.3 is a bug-fix release. It maintains both forward and backward
+compatibility (source and binary) with Qt 4.2.0.
+
+The Qt version 4.2 series is binary compatible with the 4.1.x and 4.0.x
+series. Applications compiled for 4.0 or 4.1 will continue to run with 4.2.
+
+****************************************************************************
+*                           General                                        *
+****************************************************************************
+
+General Improvements
+--------------------
+
+- Configuration/Compilation
+    * Fixed architecture detection on UltraSPARC-T1 systems.
+    * Fixed compilation on embedded architectures when qreal is not double.
+    * Compile on OpenBSD.
+
+- Documentation
+    * Completed documentation for "Implementing Atomic Operations",
+      which is useful for people porting Qt to a new hardware architecture.
+
+- Translations
+    * Added a new unofficial Portuguese translation courtesy of Helder
+      Correia.
+
+- Qt Linguist
+    * Made the columns in the phrasebook resizeable.
+
+- lupdate
+    * Fixed bug in the .pro parser of lupdate. It should accept backslashes.
+    * Fixed a severe slowdown in lupdate. (~400x speedup.)
+    * Fixed traversal of subdirectories.
+
+- moc
+    * Don't create trigraphs in the generated code for C++ casts.
+
+- uic
+    * Fixed a bug that generated excessive margins for Q3GroupBox.
+
+Third party components
+----------------------
+
+- libpng
+
+  * Security fix: Avoid null dereferences.
+
+****************************************************************************
+*                          Library                                         *
+****************************************************************************
+
+General improvements
+--------------------
+
+- Graphics View
+
+    * Calling QGraphicsScene::update() without arguments now correctly
+      updates the entire scene.
+    * Changing the background brush in QGraphicsScene now correctly updates
+      the entire scene
+    * Fixed a crash in QGraphicsScene due to stale pointers in the BSP tree.
+    * QGraphicsScene::createItemGroup() now allows you to create an empty
+      group (previously caused an assert in debug mode).
+    * Fixed rendering bugs with QGraphicsPixmapItem::offset().
+    * Adding an item to a QGraphicsScene now always implicitly causes an
+      update.
+    * Fixed a crash caused by deleting a QGraphicsScene that is being viewed
+      by a QGraphicsView.
+    * Items with zero width or height (e.g., a horizontal or vertical line
+      with a zero-width cosmetic pen) are now rendered correctly.
+    * Fixed a crash in QGraphicsScene::destroyItemGroup(), and when removing
+      items from a group.
+
+- Item views
+    * Fixed data loss in QTreeWidget, QTableWidget and QListWidget that
+      occurred when performing a drag and drop copy operation on items
+      containing data in custom roles.
+
+    * Fixed signal emission bugs in QSqlQueryModel and QSqlTableModel that
+      caused the view to contain invalid items when used with a
+      QSortFilterProxyModel.
+
+    * Fixed a bug in word-wrapped text that could cause all new-line
+      characters, and the last line in string containing at least one
+      newline character, to be removed.
+
+    * Fixed bug in QListView where the last item of a batch was not always
+      displayed.
+
+- QAction
+    * Fixed a possible crash when using alternate shortcuts on a QAction.
+
+- QByteArray
+    * Fixed a crash in toUpper().
+
+- QCleanlooksStyle
+    * Indeterminate progress bars are now correctly animated.
+
+- QComboBox
+    * Fixed broken case sensitive completion.
+    * Changing the font on a QComboBox now changes the font on the popup as
+      well.
+
+- Q3TextEdit
+    * Fixed regression where some shortcuts didn't work on Mac OS X.
+
+- Q3Canvas
+    * Fixed potential memory overrun when determining a clipping chunk.
+
+- Q3Socket
+    * Fixed unexpected remote disconnection bugs (also QTcpSocket).
+
+- QFile
+    * Performance enhancements in QFile::copy().
+    * Allow reading past the previous end of the file if the file grows.
+    * Reliably allow QFile::readLine() and QFile::readAll() to be used to
+      read from stdin on all platforms.
+
+- QFileDialog
+    * Fixed crash that could occur when the filter began with ';;'.
+    * Fixed assertion caused by calling setFilters() with an empty list.
+    * Fixed problem with file entries not being laid out correctly.
+
+- QGridLayout
+    * Fixed bug in handling of fixed size spacers spanning multiple
+      rows/columns
+
+- QLayout
+    * Fixed bug caused by setting minimumSize() and SizePolicy::Fixed on a
+      widget that implements minimumSizeHint() but not sizeHint().
+
+- QLineEdit
+    * Fixed crash caused by moving the cursor over a QChar::LineSeparator
+      in the text.
+
+- QPainter
+    * Fixed bug in QPainter::drawPoints() when using the raster paint engine
+      which caused some points to be missing.
+    * Removed memory leak in raster paint engine when drawing complex
+      polygons/paths.
+
+- QProcess
+    * Fixed a crash that could occur when calling QProcess::waitForFinished()
+      from inside a slot connected to a signal emitted by QProcess.
+    * Fixed a race condition on Windows where QProcess::bytesToWrite() would
+      return a short byte count.
+
+- QTextDocument
+    * Fixed find() with backward searches.
+    * Match CSS style selector case insensitively.
+    * Fixed HTML import for tables with missing cells and rowspan/colspan
+      attributes. 
+
+- QSortFilterProxyModel
+    * Fixed a crash caused by calling filterChanged().
+    * Fixed a crash caused by removing items from the source model.
+    * Fixed a bug that could cause a model to enter an invalid state when
+      filtering items in a hierarchy, causing items in a QTreeView to
+      erroneously be collapsed.
+    * Fixed a bug that could cause invalid items to be added when inserting
+      new items to the source model.
+
+- QSyntaxHighlighter
+    * Fixed failing assertion that could occur when installing a syntax
+      highlighter before the document has created a layout.
+
+- QPluginLoader
+    * Fixed compilation of Q_EXPORT_PLUGIN when used with templates.
+
+- QTcpSocket
+    * Fixed a bug where QTcpSocket would time out when connecting to a
+      closed service on Windows.
+    * Fixed a race condition when calling waitFor...() functions with a very
+      short timeout value.
+    * Fixed unexpected remote disconnect problems on Windows.
+    * Improved the reliability of the waitFor...() functions with SOCKS5
+      proxy support.
+
+- QTextLayout
+    * Fixed rendering of surrogate pairs and cursor navigation with them.
+
+- QTextEdit
+    * Fixed crash in QTextEdit::setExtraSelection() that could occur when
+      used with null cursors.
+    * Fixed scrollbar bug which could cause the bottom of the text to be
+      unreachable.
+
+- QTextStream
+    * Fixed QTextStream::readLine() so it can be used reliably with stdin on
+      all platforms, and updated the documentation to reflect this.
+
+- QMacStyle
+    * Ensured that tab bars are drawn correctly regardless of the font used.
+
+- QMenuBar
+    * Properly marked the "text heuristic matching" strings for translation.
+
+- QMenu
+    * Fixed incorrect scrolling on large menus on Mac OS X.
+
+- QPlastiqueStyle
+    * Ensured that indeterminate progress bars are now always animated and
+      fixed a rendering bug.
+
+- QPrinter
+    * Fixed a bug on X11 that caused the printer to generate too many
+      copies.
+    * Fixed a bug in the PostScript driver that could cause invalid
+      PostScript to be generated.
+
+- QSqlRelationalTableModel
+    * Ensured that the internal cache is cleared after
+      QSqlRelationalTableModel::submitAll() is called. 
+
+- QSqlDriver
+    * Ensured that QSqlDriver::formatValue() doesn't cut off characters from
+      field names.
+
+- QTextTable
+    * Removed false assertion when deleting the first row or column in a
+      table.
+    * Fixed crash when splitting cells in the rightmost column of a table.
+    * Fixed issue where QTextTable::splitCells() would shift cells further
+      down in the table.
+    * Fixed crash in QTextTable::mergeCells() caused by merging an already
+      merged cell.
+    
+- QToolTip
+    * Fixed QToolTip sizes when used with HTML tags like <BR>.
+
+- QUdpSocket
+    * Fixed a busy-wait causing the event loop to spin when writing a
+      datagram to an unbound port.
+    * QUdpSocket now reliably emits readyRead() in connected mode.
+
+- QUrl
+    * Fixed a crash that would occur as a result of calling errorString() on
+      an empty URL.
+
+- SQL plugins
+    * Prevent crashes in QSqlQuery after reopening a closed ODBC connection.
+    * Prevent crash when retrieving binary data from ODBC.
+    * The Interbase driver now returns a valid handle through
+      QSqlDriver::handle().
+
+- QMutex
+    * Fixed race condition in QMutex::tryLock() that would prevent all
+      other threads from acquiring the mutex
+
+- QList
+    * Fixed crash when modifying a QList that must be detached from a
+      separate thread
+
+- QWidget
+    * Fixed case where a modal dialog could be stacked below its parent
+      window when the dialog was shown first
+    * Fixed an erroneous hideEvent() from being sent immediately after
+      window creation
+    * Fixed problem with missing text in QWidget::whatsThis().
+
+- QWindowsStyle
+    * Fixed a crash that could occur when deleting a QProgressBar after its
+      style was changed.
+
+- QVariant
+    * Fixed assertion caused by streaming in a variant containing a float.
+
+- QAbstractItemView
+    * Fixed focus problem with cell widgets.
+
+- QTableView
+    * Fixed problem with context menus clearing the selections.
+
+- QHeaderView
+    * Fixed assertion that could occur when removing all sections when some
+      sections had been moved.
+    * Fixed a bug that could prevent the user from resizing the last 
+      visible section if the "real" last section was invisible.
+
+- QListView
+    * Fixed crash when calling reset.
+
+- QTableWidget
+    * Fixed painting problem that could occur when rows were swapped.
+
+- QTreeView
+    * Fixed a crash that could appear when removing all the children of an
+      item.
+
+****************************************************************************
+*                      Platform Specific Changes                           *
+****************************************************************************
+
+X11
+---
+    * Fixed detection of Type1 symbol fonts.
+    * Fixed crash on exit in QSystemTrayIcon when QApplication is used
+      as the parent.
+    * Fixed animation GUI effects on tooltips, menus, and comboboxes.
+    * Fixed crashes in threaded programs when Qt uses the Glib main
+      loop.
+    * Fixed bug where an empty LANG environment variable could prevent input
+      of non-ASCII chars in Qt widgets.
+    * Fixed leak of initial style created by QApplication after calling
+      QApplication::setStyle().
+    * Fixed erroneous event delivery to a widget that has been destroyed.
+    * Prevent shortcuts for keypad arrow keys from being activated when
+      Num Lock is on.
+    * Fixed bug which caused incorrect drawing of subrectangles of bitmaps.
+    * Fixed bug in rendering of the Bengali script.
+
+Windows
+-------
+    * Fixed compilation with -no-stl.
+    * Fixed compilation with Windows SDK for Vista.
+    * Fixed an issue that could cause missing text when Cleartype was used.
+    * Fixed the hot-spot locations for OpenHandCursor and CloseHandCursor.
+    * Fixed infinite warning loop about adopted threads in applications with
+      many threads.
+    * Fixed assertion caused by hiding a child widget whose window has not
+      yet been created.
+    * Fixed QWindowsXPStyle so that it is possible to draw a
+      QStyle::CE_DockWidgetTitle without having an actual instance of
+      QDockWidget.
+    * Fixed crash when drawing text with large font sizes.
+    * Fixed support for the Khmer language.
+    * Fixed incorrect reporting of frameGeometry() after a window is closed.
+    * Fixed crash when handling spurious WM_CHAR from Remote Desktop Client.
+    * Fixed crash in JPEG plugin while loading.
+    * Fixed crash in QFileDialog::getExistingDirectory() when specifying
+      a parent that has not been shown yet.
+
+Mac OS X
+--------
+    * Fixed regression where dragging/copying Unicode text in Qt to another
+      application would only export the non-Unicode version.
+    * Fixed regression where releasing the mouse button would send two mouse
+      releas events to a widget.
+    * Fixed regression where the drop action would be reset after a native
+      "DragLeave" event was received.
+    * Wrapping a (non-Qt) window's content view and resizing before showing
+      the window for the first time now works correctly.
+    * Ensured that the content view is always created before we QWidgets are
+      added to a window - this allows better integration with Cocoa apps.
+    * Fixed regression where text/uri-list was inadvertently disabled for
+      clipboards.
+    * Fixed regression where setting the brushed metal style on a message
+      box would show the label in a non-metallic style.
+    * Fixed the open source binary package to have the correct definitions
+      for development.
+
+Qtopia Core
+-----------
+    * Fixed a data corruption bug in QDataStream on ARM processors where
+      reading and writing doubles/qreals would be incompatible with streams
+      on other platforms.
+      Note: corrupt data streams generated with previous versions of Qtopia
+      Core on ARM platforms cannot be read with this version.
+    * Fixed a possible buffer overflow in the VNC driver.
+    * Fixed a memory leak in the windowing system.
+    * Fixed painting errors occuring with use of QT::WA_PaintOnScreen on
+      certain screen configurations.
+    * Improved performance when using a 16-bit brush as the background on a 
+      16-bit screen.
+    * Improved performance of 16-bit semi-transparent solid fills.
+    * Fixed crash that could occur when saving a 16-bit image in BMP or PPM
+      formats.
+    * Fixed bug where window icons would not be shown in Plastique style.
+    * Fixed bug in QWSServer::setMaxWindowRect() on rotated displays.
+    * Fixed crash with normalized Unicode characters and QPF fonts.
+    * Ensured that QWidget::minimumSize() does not become larger than the
+      screen size.
+