Qt 4.4 introduces many new features as well as many improvements and

bugfixes over the 4.3.x series. For more details, see the online

documentation which is included in this distribution. The

documentation is also available at http://qt.nokia.com/doc/4.4

The Qt version 4.4 series is binary compatible with the 4.3.x series.

The Qt for Embedded Linux version 4.4 series is binary compatible with the

Qtopia Core 4.3.x series. Applications compiled for 4.3 will continue to

run with 4.4.

Some of the changes listed in this file include issue tracking numbers

corresponding to tasks in the Task Tracker:

  http://qt.nokia.com/developer/task-tracker

Each of these identifiers can be entered in the task tracker to obtain

more information about a particular change.

****************************************************************************

*                           General                                        *

****************************************************************************

General Improvements

--------------------

- Legal

    * This version introduces the GPL version 3 as an alternative

      license for the Open Source Edition of Qt, in addition to the

      existing licenses.

    * Updated the GPL Exception to version 1.2, which grants additional

      rights to developers using the LGPL version 3.0 and other licenses

      for their software.

- Configuration/Compilation

    * [102113, 151125] Make it possible to use Qt headers with MSVC's

      warning level 4.

    * [129841] Make Qt compile with Intel C++ 9.0 and Intel C++ 10 compilers

      on Windows.

    * [168868] Add experimental support for the Blackfin processor.

    * [188167] Fixed a bug in the solaris-cc mkspec that would cause

      it to always use RPATH, even when configured with -no-rpath.

    * [176029] Added qmalloc.cpp with qMalloc() and qFree() implementation

      to make it easier to replace the default container allocators with

      custom allocators (by providing your own qmalloc.o(bj) file).

    * Enable -reduce-exports automatically on linux-icc* mkspecs when

      using version 10.1 of the Intel C++ Compiler for Linux.

    * Add experimental support for the AVR32 processor.

    * Allow building Qt with -release and the Intel C++ Compiler for

      Linux. This required working around several compiler bugs by

      turning optimizations off for certain modules. See the compiler

      notes for more details.

    * Add support for MSVC 2008, and add separate mkspecs for MSVC 2002 &

      2003.

    * [189185] Avoid quoting the the include and library paths for iconv.

- Documentation and Examples

    * The Qt Designer Manual was updated to include new Qt Designer features.

    * QtScript module overview was updated with more examples and reference

      material.

    * [161404] The 40000 Chips demo no longer shifts when clicking the OpenGL

      button.

    * [188676] Fixed text item moving in Diagram Scene example.

    * New demo: Embedded Dialogs

    * New demo: Browser

    * New example: Graphics View / Pad Navigator

    * New example: Item Views / Address Book

    * New example: WebKit / Previewer

    * New Example: XmlPatterns / Recipes

    * New tutorial: Address Book

    * Multiple bug fixes for the Torrent Client example.

    * Speed-ups in the Ported Asteroids Example.

    * [164223] All examples that use resources now include

      Q_INIT_RESOURCES to avoid breakage in static builds.

- Translations

    * Added a Traditional Chinese translation of the Qt and tools courtesy

      of Franklin.

    * Added a Spanish translation of Qt courtesy of Enrique Matias Sanchez.

- Signals and slots

    * [147681] Added support for 'long long' and 'unsigned long long'

      in queued connections.

    * [125987] Optimized QMetaObject::activate(), the function that

      actually delivers signals to all connected slots.

    * [164558] Fixed a bug that caused queued signals to be delivered out

      of order (not in the order they are emitted).

    * [169554] Added Q_EMIT, to correspond to Q_SIGNAL and Q_SLOT.

- Multithreaded painting

    * [66358, 142031] Added support for painting on QImage, QPicture,

      and QPrinter in multiple threads. See the Multithreaded

      Programming documentation for more details on supported features

      and known limitations.

- Embedded QWidget support for Graphics View

    * [177204] Added support for using layouts, styles, palettes and fonts,

      as well as embedding QWidgets into a QGraphicsScene.

- XML support in QtCore

    * The QXmlStreamReader, QXmlStreamWriter and supporting classes

      have moved from the QtXml module to the QtCore module. This change is

      both source- and binary-compatible with previous versions. New

      applications can opt to not link to QtXml when using these classes.

- Printing

      Made a number of improvements to printing in Qt 4.4, including

      support for setting custom page sizes and custom margins as well as

      the ability to programatically enumerate printers via the new

      QPrinterInfo class. A couple of new classes, QPrintPreviewWidget

      and QPrintPreviewDialog, have been added to make it easy to add a

      print preview to an application. The QPrintDialog and QPageSetupDialog

      for X11 have been redesigned and are hopefully easier to use.

New features

------------

- XQuery 1.0 and XPath 2.0 support provided through the new QtXmlPatterns

  module.

- Qt Help module for embedding documentation into applications.

- QSystemSemaphore provides a general counting system semaphore.

- QSharedMemory provides access to a shared memory segment between multiple

  threads and processes.

- QLocalServer class provides a local socket-based server with a matching

  new QLocalSocket class.

- QFileSystemModel provides a data model for the local file system. Unlike

  QDirModel, QFileSystemModel will fetch directory listings in a background

  thread to prevent any locking in the GUI. QFileSystemModel is also much

  faster and has a few more features then QDirModel.

- QCommandLinkButton to support Vista style command links on all platforms.

- QFormLayout provides a layout designed for convenient form creation with

  the appropriate appearance on different platforms. This class previously

  appeared in Qtopia/4.3, but has been integrated into Qt.

- QtConcurrent provides a high level multi-threading API.

- QPlainTextEdit provides a highly scalable plain text editor. It uses

  similar technology and concepts as QTextEdit, but is optimized for plain

  text handling; e.g. as a log viewer.

- QTextBoundaryFinder is a new class implementing the Unicode text

  boundaries specification.

Third party components

----------------------

- Updated Qt's SQLite version to 3.5.4.

- Updated Qt's libpng version to 1.2.25.

- Added CLucene version 0.9.17.

- Added WebKit (see the src/3rdparty/webkit/VERSION file for the version).

- Added Phonon version 4.1.

****************************************************************************

*                          Library                                         *

****************************************************************************

- General Fixes

    * [147201] Assert in debug mode when using QReadLocker, QWriteLocker,

    or QMutexLocker with unaligned pointers.

- QAbstractButton

    * [190739] Ensure button with the TabFocus policy doesn't receive focus

      through others ways.

    * [192074] Disable key navigation for buttons in a item view.

- QAbstractItemModel

    * [171469] Speed up insertion of rows into a model.

- QAbstractItemView

    * [162487] Check canFetchMore() on the model before calling fetchMore().

    * [179163] The virtual selectAll() is now called when the user types

      "Ctrl+A"

    * [181413] Fixed InternalMove for MoveAction-only models.

    * [181988, 192114] Made mouse wheel smarter on ScrollPerPixel mode.

    * [182248] Trasparent background for the dragged visual.

    * [184507] setVerticalScrollMode(ScrollPerItem) can cause the view to

      scroll to the bottom.

    * Add autoScrollMargin property.

    * [162547] Make the current index stay in the viewport when sorting.

    * [165404] Make the drop indicator stylable.

    * [160611] Ensured that the hover item is updated when dragging over the view.

    * [162497] Allow key events to be propagated.

    * [186052] Mac: The alternatingRowColors property now honors the

      Graphite color setting.

    * [202276] Fixed crash when pressing Ctrl+C in a view with no model.

    * [202034] Ensured that the editor's geometry is kept up to date when rows

      are inserted.

    * [204403] Only scroll to the current index on reset if the view is

      editing.

- QAbstractProxyModel

    * [156789] Fixed a crash when deleting the source model.

    * [194765] Made headerData() call mapToSource() when asking for data.

    * [195023] Added setData() and setHeaderData() implementation.

- QAbstractScrollArea

    * [159949] Fixed a bug where setting the horizontal scroll had no effect.

- QAbstractSpinBox

    * [183108] Allowed a spin box to be cleared before it is visible.

    * [198687] Always reset modified and undo states of the line edit upon

      pressing Enter.

- QAccessible

    * [177706] Windows narrator will now read Tooltips properly.

    * [182437] Tooltips are now read aloud once instead of twice.

- QAction

    * [200823] Fixed regression that caused the tool tip of an action not to

      show the shortcut by default.

    * [97238] Introduced the iconVisibleInMenu.

- QApplication

    * [100630, 153895] Fixed a bug where key press events were always

      sent as non-spontaneous events, while the key release event was

      spontaneous.

    * [194454, 196062] Fixed QApplication::quitOnLastWindowClosed to

      work as documented.

    * [97238] Introduce an attribute (AA_DontShowIconsInMenus) to control

      the default behavior of icons in menus. This obsoletes the

      qt_mac_set_menubar_icons() function.

    * [201218] Fix bug on Mac OS X where Qt::WA_DeleteOnClose failed to

      delete on close.

- QAtomicInt

- QAtomicPointer

    * [168853] Introduced QAtomicInt and QAtomicPointer into the public API.

      These classes provide a cross-platform API for doing atomic operations.

    * Optimized testAndSet*() on PowerPC to not branch in the best case

      (when value == expectedValue).

    * [197244] Fixed the gcc inline assembler constraints for the PowerPC

      implementation.

    * [198399] Applied patch from SUSE to add S390(x) support.

- QBoxLayout

    * [103626] Added insertSpacerItem() and addSpacerItem().

    * [127621] Made setStretchFactor() behave correctly if widget == 0.

- QBrush

    * [179308] Fixed a bug which caused QBrush to forget the color if it was

      passed in the constructor along with Qt::NoBrush.

    * [169502] Fixed a threading issue with setTextureImage().

- QBuffer

    * [184730] A TIFF image can now be stored correctly in a QByteArray.

- QByteArray

    * [193870] Copy the data of a QByteArray that is taken from

      QByteArray::fromRawData() when appending more data.

    * [82509] Added QT_NO_CAST_FROM_BYTEARRAY to disable "operator const

      char *" and "operator const void *".

- QCalendarWidget

    * [181388] Added support for updating the cell of a particular QDate.

    * [172053] Fixed palette bug for calendar's buttons.

- QChar

- QCleanlooksStyle

    * [194082] Fixed disabled checkbox painted as unchecked.

    * [189609] Fixed an issue where QMdiSubWindow could have incorrect

      buttons.

    * [182806] Retain hover appearance on slider while dragging.

    * [180105] Fixed gradient backgrounds shown as black on a pressed

      QPushButton.

    * [176674] Fixed combobox drop down ignoring custom icon sizes.

    * [197691] Made the style work better on older X11 servers without

      XRender support.

- QColorDialog

    * [142706] use QDialogButtonBox to conform with the style it is running

      in.

- QColumnView

    * [167408] Added createColumn() to help make subclassing easier.

- QComboBox

    * [155578] Improved calculation of size hint for combo box pop-up.

    * [183982] Fix bug where the combobox width was not wide enough in some

      styles.

    * [187744] Made QComboBox behave slightly better when the view is a tree.

    * [189444] Allowed separators in the list.

    * [190332] Made the popup respect the view's selection behavior.

    * Made setEditable(false) explicitly hide the lineEdit, otherwise it may

      remain visible when executing a modal dialog immediately afterwards.

    * [154884] Fixed a bug where the popup was hidden without calling

      QComboBox::hidePopup().

    * [169848] Fixed a bug where the combo box did not open as expected when

      using a touch screen.

    * [153975] Mac OS X: Improved the visual appearance (flash selected item

      and fade away when hiding the menu).

    * [190351] Fixed setView() for style using SH_ComboBox_Popup.

    * [191329] Fixed the height calculation of the popup for custom view.

- QCommonStyle

    * [173539] Make the combo label draw according to the combo box's layout

      direction and not the application's.

- QCompleter

    * [189564] Prevented unselectable items from appearing in the completion

      list.

    * [180785] Ensured that QCompleter emits activated() after pressing the

      Return key.

- QCoreApplication

    * [157435] Fixed the posted event implementation to prevent the pending

      queue from growing endlessly while a modal event loop is running.

    * [132395] Sent DeferredDelete events at the right time. Specifying the

      QEventLoop::DeferredDeletion flag (now deprecated) to processEvents()

      is no longer necessary.

    * [131235] Added QCoreApplication::applicationPid().

    * [132859] Don't explicitly set the LC_NUMBERIC locale to "C" on UNIX

      systems.

    * [187044] Fixed a crash when addLibraryPath() or setLibraryPaths()

      is invoked before creating QCoreApplication.

    * [161049, 171670] Don't leak the single QThread instance that Qt creates

      to represent the main() thread.

    * [143743] Added the QCoreApplication::applicationVersion property.

- QCryptographicHash

    * [190062] Ensured that calling result() twice returns the same value.

- QDataWidgetMapper

    * [194784] Allowed setting NULL values for editors.

- QDataStream

    * [196100] Fixed compatibility issue with QCString in Qt3.x streams.

    * [196415] Fixed compatibility issue with invalid colors in Qt 3.x

      streams.

- QDateTime, QDate, QTime

    * [189882] Optimized {QDate,QTime,QDateTime}::fromString() so that it

      is about 40% faster than before.

    * [193079] Have {QDate,QTime,QDateTime}::fromString() understand

      locale-dependent string formats.

    * Added enum values to distinguish between short and long formats.

- QDateTimeEdit

    * Added properties minimumDateTime/maximumDateTime

    * [169916] Added a timeSpec property for QDateTimeEdit

    * [178027] Make QDateTimeEdit respect the locale property

    * [158950] Disable QCalendarWidget popup when the dateTimeEdit is

      read-only.

    * [145872] Added a getter and setter for the QCalendarWidget popup.

- QDateEdit

    * Don't interpret time-specific formats as special fields in a QDateEdit

      and vice versa for QTimeEdit.

- QDesktopServices

    * [89584] Added a way to get users Documents, Desktop, Movies

      directories.

    * [105740] Added a way to determine the location to store data files.

- QDialog

    * [174842] Ignore the close event if the reimplementation of reject()

      doesn't close the dialog.

- QDialogButtonBox

    * [191642] Don't steal the default button if there is one already.

    * [196352] Fixed roles of QDialogButtonBox::Abort and

      QDialogButtonBox::Ignore.

- QDir

    * [172057] Fixed bug when sorting directories containing files larger

      than 2GB.

    * [177904] Fixed a problem with QDir::tempPath() and QDir::homePath()

      returning trailing slashes inconsistently. Now it returns the

      absolute path name, without the trailing slash.

- QDirModel

    * [176323] Fixed display of files moved by drag and drop (on a QTreeView).

    * [196768] Fixed sorting.

- QDockWidget

    * [171661] Fixed setTitlebarWidget(0) to reset the native decoration.

    * [169808] SizeHint is now taken into account.

    * [188583] Fixed a bug making dockLocationChanged signal not always

      emitted.

    * [193613] Highlighted splitters between QDockWidgets, now go back to

      inactive state when the cursor have passed over it.

- QDoubleSpinBox

    * [164696] QWidget::locale() is now used for all string-to-number

      conversions.

- QErrorMessage

    * [189429] Fixed "do not show again" with rich text message.

- QEvent

    * [37536] Add QEvent:registerEventType() for obtaining a unique

      event type ID.

    * [161940] Fix QContextMenuEvent::modifiers() on X11 and Qt for Embedded

      Linux to behave like the Windows and Mac OS X. Previously, this

    * [166605] A drop event's drop action is now initialized to the drag

      manager's current default action.

- QFile

    * [107448] Fixed bug where QFile::write() would fail to report an error

      on disk full.

    * Added map() and unmap() to map files into memory.

- QFileDialog

    * [71645] Added a property to hide filter details.

    * [174510] Ensured that when multiple files are selected, all of them

      will be deleted, not just the current one.

    * [172254] selectFile should also set the current directory.

    * [185930] getExistingDirectory directory file not updated after

      renaming the new directory.

    * [164591] Provided a way to set the QDir::filter on the model.

    * [180459] Native OS X file dialog forgets last visited directory.

    * [184508] Improved speed when showing a lot of files.

    * [184508] Improved launch speed.

- QFont

    * Add Capitalize font-capitalization feature including small caps.

    * [191756] Do not crash when font config finds no fonts on the system.

    * [145015] Don't replace '-' characters in font names anymore.

    * Fixed a bug where glyphs sometimes showed up in italic for a non italic

      font (X11/Embedded Linux only).

    * Fixed a bug where xHeight() sometimes returned a wrong number

      (X11/Embedded Linux only).

    * Added support for word- and letter-spacing.

- QFontComboBox

    * Fixed a bug where font name would not be displayed in some cases.

- QFontMetrics

    * [179946] Fixed averageCharWidth() to change return value after adding

      text to a QPainterPath.

- QFSFileEngine

    * [200220] Fixed a potential crash and removed some potential resource

      leaks.

    * [190377] Fixed a reentrancy bug on all platforms; querying the canonical

      path no longer relies on chdir() and realpath().

    * [155284] Fixed uninitialized memory problem when calling realpath()

      with an empty name on Solaris.

- QGL

    * [137573] Fixed drawing of images/pixmaps larger than the maximum texture

      size in the OpenGL paint engine.

    * [175853] Added new drawTexture member functions for convenient drawing

      of textures in QGLWidget, QGLContext, QGLFramebufferObject, and

      QGLPixelBuffer.

    * [187954] Fixed an issue with missing corner pixels when drawing

      rectangles in the OpenGL paint engine.

- QGLContext

    * [184996] Made isSharing() return something useful after a QGLWidget has

      been reparented under Windows.

- QGLPixelBuffer

    * [195317] Make QGLPixelBuffer::hasOpenGLPbuffers() preserve the current

      GL context when called.

- QGLWidget

    * [128157] QPixmap::grabWidget() now works on a QGLWidget.

    * Added support for syncing drawing to QGLWidgets under X11 via the

      QGLFormat::setSwapInterval() mechanism. This requires the

      GLX_SGI_video_sync extension to be present.

    * [183472] Made renderText() respect the currently set GL scissor box

      and GL viewport.

    * [182849] Fixed a crash on the Mac when renderPixmap() was called on a

      multisampled GL context.

    * [176618] Don't require depth testing to be enabled for the 3D version

      of renderText() to work.

- QGradient

    * [178299] Fixed an issue where calling setColorAt twice with the same

      position would not replace the existing color at that position.

- QGraphicsItem

    * [161160] Speedup when removing children from an item.

    * [158799] QGraphicsItem now returns a different scene from 

      itemChange(ItemSceneChange).

    * [127051] Added support for item caching in local and device

      coordinates.

    * [183996] Fixed a bug caused when items are moved by pressing many mouse

      buttons at the same time.

    * [192983] Added QGraphicsItem::boundingRegion(), which allows updating

      items based on their shape instead of their bounding rect.

    * Improved QGraphicsItem::isObscured() and QGraphicsItem::opaqueArea()

      speed and accuracy.

    * [195916] Fixed crash when deleting an item as it receives a

      contextMenuEvent().

    * [202476] DeviceCoordinateCache now works with perspective

      transformations.

    * [202718] DeviceCoordinateCache performance improved greatly when

      the cached item does minimal updates.

    * [202689] Scrolling works (but is slow) for cached items.

- QGraphicsItemAnimation

    * [164587] QGraphicsItemAnimation::reset() has been marked as obsolete.

- QGraphicsLineItem

    * [177918] Lines with the same start and end point are now valid, and

      rendered as a point.

- QGraphicsScene

    * [160463] QGraphicsScene::clearSelection() is now a slot.

    * [161284] Added Q_DISABLE_COPY.

    * [163854] QGraphicsScene no longer sends events to a disabled mouse

    grabber item.

    * [176902] Add support for context menu event propagation.

    * [176178] QGraphicsScene::sceneRect() now auto-updates also with NoIndex

      set.

    * [186398] Added a fast QGraphicsScene::clear(), and massive speed-up in

      recursive scene destruction.

    * [180663] Fixed miscalculated expose rects in QGraphicsScene::render().

    * [176124] Ensure that all mouse events that should have a widget assigned

      do have a widget assigned.

    * [174238] The selectionChanged() signal is no longer emitted twice when

      replacing one selection with another.

    * [160653] selectionChanged is now emitted when reselecting an already

    selected item.

    * QGraphicsScene::mouseMoveEvent now receives all mouse move events from