Qt 4.3 introduces many new features as well as many improvements and

bugfixes over the 4.2.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/4.3

The Qt version 4.3 series is binary compatible with the 4.2.x series.

Applications compiled for 4.2 will continue to run with 4.3.

The Qtopia Core version 4.3 series is binary compatible with the 4.2.x

series except for some parts of the device handling API, as detailed

in Platform Specific Changes below.

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

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

- Configuration/Compilation

    * Fixed OpenBSD and NetBSD build issues.

- Legal

    * Added information about the OpenSSL exception to the GPL.

- Documentation and Examples

    * Added information about the TS file format used in Linguist.

    * Moved platform and compiler support information from

      website into the documentation.

    * Added an Accessibility overview document.

    * Added new example to show usage of QCompleter with custom tree models.

- Translations

    * Added a Slovak translation of Qt courtesy of Richard Fric.

    * Added a Ukrainian translation of Qt courtesy of Andriy Rysin.

    * Added a Polish translation of the Qt libraries and tools courtesy of

      Marcin Giedz, who also provided a Polish phrasebook for Qt Linguist.

    * [155464] Added a German translation for Qt Designer.

- Added support for the CP949 Korean Codec.

- [138140] The whole Qt source compiles with the QT_NO_CAST_FROM_ASCII

  and QT_NO_CAST_TO_ASCII defines and therefore is more robust when

  using codecs.

- Added support for HP-UX 11i (Itanium) with the aCC compiler

- Changed dialogs to respond much better to the LanguageChange event.

  (i.e. run time translation now works much better.)

- Signals and slots

    * [61295] Added Qt::BlockingQueuedConnection connection type, which

      waits for all slots to be called before continuing.

    * [128646] Ignore optional keywords specified in SIGNAL() and SLOT()

      signatures (struct, class, and enum).

    * Optimize emitting signals that do not have anything connected to them.

- [121629] Added support for the MinGW/MSYS platform.

- [102293] Added search path functionality (QDir::addSearchPath)

- Almost all widgets are now styleable using Qt Style Sheets.

Third party components

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

- Updated Qt's SQLite version to 3.3.17.

- Updated Qt's FreeType version to 2.3.4.

- Updated Qt's libpng version to 1.2.16.

- Added libtiff version 3.8.2 for the TIFF plugin.

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

*                          Library                                         *

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

- QAbstractButton

    * [138210] Ensured strictly alternating ordering of signals resulting

      from auto-repeating shortcuts. Fixed a repeat timer bug that cause

      cause infinite retriggering to occur.

    * [150995] Fixed bug where non-checkable buttons take focus when

      activating shortcuts.

    * [120409] Fixed bug where the button was set to unpressed when the

      right mouse button was released.

- QAbstractItemView

    * [111503] Ensured that focus is given back to the view when the Tab key

      is pressed while inside an editor.

    * [156290] Use slower scrolling when the ScrollMode is set to

      ScrollPerItem.

    * Ensured that the item view classes use the locale property when

      displaying dates and numbers to allow easy customization.

    * Fixed a repaint issue with the focus rectangle in cases where

      selection mode is NoSelection.

    * [147422] Detect when persistent editors take/lose focus and update the

      view accordingly.

    * [146292] Items are now updated even if they contain an editor.

    * [130168] Auto-scrolling when clicking is now delayed to allow

      double-clicking to happen.

    * [139247] Fixed bug where clicking on a partially visible item was

      triggering a scroll and the wrong item was then clicked.

    * [137729] Use dropAction() instead of proposedAction() in

      QAbstractItemView::dropEvent().

    * Fixed a bug that prevented keyboardSearch() from ignoring disabled

      items.

    * [151491] Ensured that we pass a proper MouseButtonPress event in

      QAbstractItemView::mouseDoubleClickEvent().

    * [147990] Ensured that double-clicking does not open an editor when

      the edit trigger is set to SelectedClicked.

    * [144095] Ensured that sizeHintForIndex() uses the correct item

      delegate.

    * [140180] Ensured that clicking a selected item clears all old

      selections when the view is using the ExtendedSelection selection mode

      and SelectedClicked as an edit trigger.

    * [130168] Fixed bug where double clicking on partially visible items

      would not activate them.

    * [139342] Allow editing to be started programatically, even if there

      are no edit triggers.

    * [130135] Added public slot, updateIndex(const QModelIndex &index).

- QAbstractProxyModel

    * [154393] QAbstractProxyModel now reimplements itemData().

- QAbstractSlider

    * [76155] Fixed bug where the slider handle did not stop under the

      mouse.

- QAbstractSocket

    * [128546] Fixed bug where an error was emitted with the wrong type.

- QAccessible

    * Added preliminary support for the upcoming IAccessible2 standard.

    * Made improvements to most of the accessible interfaces.

    * [154534] Ensured that our accessible interfaces honour

      QWidget::setAccessibleName() and QWidget::setAccessibleDescription().

    * Avoid crash if QAccessibleInterface::object() returns 0.

      (It is absolutely legal to return a null value.)

- QApplication

    * Added a flash() method for marking windows that need attention.

    * [86725] Allow the -style command line argument to override a

      style set with QApplication::setStyle() before QApplication

      construction.

    * [111892] Fixed a bug that caused Qt to steal all input when

      connecting the QAction::hovered() signal to a slot that called

      QMainWindow::setEnabled(false).

    * [148512] Fixed QApplication::keyboardModifiers() to update

      correctly when minimizing the window when Qt::MetaModifier is held

      down.

    * [148796] Fixed a bug that prevented Qt from detecting system font

      changes.

    * [154727] Prevent a crash when a widget deletes itself in an key

      event handler without accepting the event.

    * [156484] Fixed a bug where lastWindowClosed() was emitted for each

      top-level window when calling QApplication::closeAllWindows().

    * [157667] Ensured that widgets with the Qt::WA_DeleteOnClose property

      set are properly deleted when they are closed in the dropEvent()

      handler following a drag that was started in the same application.

    * [156410] Implemented QEvent::ApplicationActivate and

      QEvent::ApplicationDeactivate on all platforms. Note that

      QEvent::ApplicationActivated and QEvent::ApplicationDeactivated are

      now deprecated.

- QAtomic

    * [126321] Fixed several flaws in the inline assembler implementations

      for several architectures (ARM, i386, PowerPC, x86-64).

    * [133043] Added support for atomic fetch-and-add.

- QAuthenticator

    * New Class. Needed for authentication support in the Network module.

      Currently supports the Basic, Digest-MD5 and NTLM authentication

      mechanisms.

- QBitArray

    * [158816] Fixed crash in operator~().

- QCalendarWidget

    * Don't set maximum width for month/year buttons.

    * Ensured that the QPalette::Text role is used for default text.

    * Added a date editor which can be configured with the dateEditEnabled

      and dateEditAcceptDelay properties.

    * [137031] Ensured that grid lines are drawn properly when headers are

      not visible.

    * [151828] Ensured that the language can be set with

      QCalendarWidget::setLocale().

- QChar

    * Updated the Unicode tables to Unicode 5.0.

    * Added foldCase() and toTitleCase() methods.

    * Added public API to handle the full Unicode range.

- QCleanlooksStyle

    * [129506] Sliders now look and behave correctly in both reversed and

      inverted appearance modes.

    * [131490] Group boxes no longer reserve space for their titles when no

      title is set.

    * [134344] A sunken frame is now used to indicate checked menu items

      with icons.

    * [133691] Improved the appearance of spin boxes and buttons when used

      against dark backgrounds.

    * [154499] Fixed a rendering issue with disabled, checked push buttons.

    * [154862] Fixed an issue causing combo boxes to sometimes show clipped

      text.

    * Slider appearance is now based on Clearlooks Cairo and the performance

      on X11 has been improved.

    * The appearance of tab bars when used with Qt::RightToLeft layout

      direction has been improved.

    * Dock widget titles are now elided if they are too long to fit in the

      available space.

- QClipboard

    * Ensured that calling clear() on the Mac OS X clipboard really clears

      its data.

    * [143927] Don't drop alpha channel information when pasting pixmaps on

      Mac OS X.

    * The Mac OS X clipboard support now understands TIFF information and

      can export images as TIFF as well.

    * [145437] Fixed crash that could occur when calling setMimeData() twice

      with the same data.

    * QMacMime now does correct normalization of file names in a URL list

      from foreign applications.

- QColor

    * [140150] Fixed bug where QColor::isValid() would return true for

      certain invalid color strings.

    * [120367] Added QColor::setAllowX11ColorNames(bool), which enables

      applications to use X11 color names.

    * Fixed internal errors in toHsv() due to inexact floating point

      comparisions.

- QColorDialog

    * [131160] Enabled the color dialog to be used to specify an alpha color

      on Mac OS X.

- QColumnView

    * A new widget that provide a column-based implementation of

      QAbstractItemView.

- QComboBox

    * Significantly reduced the construction time of this widget.

    * [155614] Speeded up addItem() and addItems().

    * [150768] Ensured that inserting items doesn't change the current text

      on editable combo boxes.

    * [150902] Ensured that only the left mouse button can be used to open

      the popup list.

    * [150735] Fixed pop-up hiding behind top-level windows on Mac OS X.

    * [156700] Fixed bug where the popup could be closed when pressing the

      scroll arrows.

    * [133328] Fixed bug where disabled entries were not grayed out.

    * [134085] Fixed bug where the AdjustToContents size policy had no

      effect.

    * [152840] Fixed bug where QComboBox would not automatically scroll to

      the current item.

    * [90172] Fixed bug where the sizeHint() implementation iterated over

      all icons to detect their availability.

- QCompleter

    * Significantly reduced the construction time of this widget.

    * Added support for lazily-populated models.

    * [135735] Made QCompleter work when used in a QLineEdit with a

      QValidator.

    * Added the wrapAround property to allow the list of completions to

      wrap around in popup mode.

    * Added support for sharing of completers, making it possible for the

      same QCompleter object to be set on multiple widgets.

    * [143441] Added support for models that sort their items in descending

      order.

- QCoreApplication

    * Added support for posted event priorities.

    * [34019] Added the QCoreApplication::removePostedEvents() overload

      for removing events of a specific type.

    * Documented QCoreApplication::processEvents() as thread-safe;

      calling it will process events for the calling thread.

    * Optimized delivery of QEvent::ChildInserted compatibility events.

    * [154727] Enabled compression of posted QEvent::DeferredDelete events

      (used by QObject::deleteLater()) to prevent objects from being deleted

      unexpectedly when many such events are posted.

    * Ensured that duplicate entries in library paths are ignored.

- QCryptographicHash

    * New Class. Provides support for the MD4, MD5 and SHA1 hash functions.

- QCursor

    * [154593] Fixed hotspot bug for cursors on Mac OS X.

    * [153381] Fixed crash in the assignment operator in cases where the

      cursor was created before a QApplication instance.

- QDataWidgetMapper

    * [125493] Added addMapping(QWidget *, int, const QByteArray &) and

      mappedPropertyName(QWidget *) functions.

- QDateTime

    * [151789] Allow passing of date-only format to QDateTime::fromString()

      (according to ISO 8601).

    * [153114, 145167] Fixed bugs that could occur when parsing strings to

      create dates.

    * [122047] Removed legacy behavior which assumed that a year between 0

      and 99 meant a year between 1900 and 1999.

    * [136043] Fixed the USER properties.

- QDateTimeEdit

    * [111557, 141266] Improved the behavior of the widget with regard to

      two-digit years. Made stepping work properly.

    * [110034] Don't change current section when a WheelEvent is received.

    * [152622] Don't switch section when a FocusInEvent is received if the

      reason is Popup.

    * Fixed a bug that would cause problems with formats like dd.MMMM.yyyy.

    * [148522] Ensured that the dateRange is valid for editors that only

      show the time.

    * [148725] Fixed a bug with wrapping and months with fewer than 31 days.

    * [149097] Ensured that dateTimeChanged() is emitted, even if only date

      or time is shown.

    * [108572] Fixed the behavior to ensure that typing 2 into a zzz field

      results in a value of 200 rather than 002.

    * Ensured that the next field is entered when a separator is typed.

    * [141703] Allow empty input when only one section is displayed.

    * [134392] Added a sectionCount property.

    * [134392] Added sectionAt(), currentSectionIndex(), and

      setCurrentSectionIndex() functions.

    * Added a NoButtons value for the buttonSymbols property.

- QDesktopWidget

    * [135002] Ensured that the resized() signal is emitted after the

      desktop is resized on Mac OS X.

- QDial

    * [151897] Ensured that, even with tracking disabled, the signal

      sliderMoved() is always emitted.

    * [70209] Added support for the inverted appearance property.

- QDialog

    * [131396] Fixed a crash in QDialog::exec() that could occur when the

      dialog was deleted from an event handler.

    * [124269] Ensured that the size grip is hidden for extended dialogs.

    * [151328] Allow the use of buttons on the title bar to be explicitly

      specified on Mac OS X.

- QDialogButtonBox

    * [154493] Moved the Action role before the Reject role on Windows to

      conform with platform guidelines.

- QDir

    * [136380] QDir's permission filters on Unix now behave the same as on

      Windows (previously the filters' behavior was reversed on Unix).

    * [158610] Passing QDir::Unsorted now properly bypasses sorting.

    * [136989] Ensured that removed dirs are reported as non-existent.

    * [129488] Fixed cleanPath() for paths with  the "foo/../bar" pattern.

- QDirIterator

    * New class. Introduced to provide a convenient way to examine the

      contents of directories.

- QDockWidget

    * [130773] Ensure that dock widgets remember their undocked positions

      and sizes.

    * Added support for vertical title bars, which can be used to save space

      in a QMainWindow.

    * Added support for setting an arbitrary widget as a custom dock widget

      title bar.

    * [141792] Added the visibilityChanged() signal which is emitted when

      dock widgets change visibility due to show or hide events, or when

      being selected or deselected in a tabbed dock area.

    * Added the dockLocationChanged() signal which is emitted when dock

      widgets are moved around in a QMainWindow.

    * [135878] Titlebars now support mnemonics properly.

    * [138995] Dock widget titlebars now correctly indicate their activation

      state.

    * [145798] Ensured that calling setWindowTitle() on a nested, docked

      dock widget causes the title in the tab bar to be updated.

- QDomDocument

    * [128594] Ensured that comment nodes are indented correctly when

      serializing a document to a string.

    * [144781] Fixed crash that would occur when the owner document of new

      attributes was not adjusted.

    * [107123] Ensured that appendChild() does not erroneously add two

      elements to document nodes in certain cases.

- QDoubleSpinBox

    * [99254] Allow higher settings for decimals.

- QDrag

    * [124962] Added QDrag::exec() to allow the default proposed action to

      be changed.

- QFile

    * [128352] Refactored the backend on Windows with major performance

      improvements; in particular line and character reading is now much

      faster.

    * [146693] Fixed a lock-up in copy().

    * [148447] QFile now supports large files on Windows where support is

      available.

    * Generally improved support for stdin.

    * Byte writing performance has improved on all platforms.

    * [151898] Added support for reading lines with an embedded '\0'

      character.

- QFileDialog

    * Updated the dialog to use native icons.

    * Made general improvements to the dialog's performance.

    * Added a sidebar to show commonly used folders.

    * [134557] Added the ability to use a proxy model.

    * Added dirEntered() and filterSelected() signals, previously found in

      Qt 3's file dialog.

    * [130353] Fixed Qt/Mac native file dialog pattern splitting

    * [140332] Made the dialog respond much better to the LanguageChange

      event.

    * [154173] Fixed a memory deallocation error.

    * Made the selected filter argument work for native Mac OS X file

      dialogs.

- QFileInfo

    * Ensured that the value of Mac FS hidden flag is returned for symbolic

      links and not their targets; i.e., hidden links are not followed.

    * [128604] Introduced isBundle() for Mac OS X bundle types.

    * [139106] Fixed bug that could cause drives to be reported as hidden

      on Windows.

- QFileSystemWatcher

    * [155548] Reliability fixes.

    * When in polling mode, send change notification when file permissions

      change.

    * [144049, 149637] Fixed a bug that prevented watching a directory

      for notification on Windows.

    * [143381] Fixed bug that caused addPath() and removePath() to fail when

      passing an empty string.

- QFocusFrame

    * [128713, 129126] Made the focus frame visible in more situations on

      Mac OS X.

- QFont

    * X11: Add a method to retrieve the FreeType handle from the QFont.

- QFontComboBox

    * [132826] Fixed a bug that could cause the popup list to be shown

      off-screen.

    * [155614] Speeded up addItem() and addItems().

    * [160110] Fixed crash that could occur when setting a pixel size for

      the fonts.

- QFontMetrics

    * [152013] Fixed bug where boundingRect() gave sizes that were too large

      when compiled using Visual Studio 6.

    * [145980] Added tightBoundingBox() method.

- QFrame

    * [156112] Fixed bug where the default frame was not correct when

      created without a parent and reparented afterwards.

    * [150995] Fixed bug where setting the frame style did not invalidate

      the size hint

- QFSFileEngine

    * Fixed bug in fileTime() on Win98 and WinME

    * Ensured that the working directory of a Windows shortcut is set when

      a link is created.

    * Improved the reliability of buffered reads on platforms that cache

      their EOF status.

- QFtp

    * [107381] Greatly improved LIST support; QFtp now supports more server

      types.

    * [136008] Improved tolerance for servers with no EPRT/EPSV support.

    * [150607] Fixed a race condition when using ActiveMode for uploading.

- QGL

    * [158971] Fixed a resource leak in the GL texture cache.

- QGLFramebufferObject

    * Made it possible to configure the depth/stencil buffer in a

      framebuffer object.

    * Added support for floating point formats for the texture in a

      framebuffer object.

- QGLPixelBuffer

    * [138393] Made QGLPixelbuffer work under Windows on systems without the

      render_texture extension.

- QGLWidget

    * [145621] Avoided a QGLFormat object copy when checking the buffer

      format with the doubleBuffer() function.

    * [100519] Rewritten renderText(). It now supports Unicode text, and it

      doesn't try to overwrite previously defined display lists.

- QGraphicsItem

    * [151271] Fixed crash that could occur when calling update on items

      that are not fully constructed.

    * Ensured that the selected state no longer changes state twice

      for each mouse click.

    * [138576] setParent() now correctly adds the child to the parent's

      scene.

    * [130263] Added support for partial obscurity testing with the

      isObscured(QRectF) function.

    * [140725] QGraphicsTextItem is now also selectable when editable.

    * [141694] QGraphicsTextItem now calls ensureVisible() if it has input

      focus.

    * [144734] Fixed bugs in unsetCursor().

    * [144895] Improved bounding rectangle calculations for all standard

      items.

    * Added support for QTransform.

    * [137055] Added QGraphicsItem::ItemPositionHasChanged and

      ItemTransformHasChanged.

    * Added several convenience functions.

    * [146863] Added ItemClipsToShape and ItemClipsChildrenToShape clipping

      flags.

    * [139782] Greatly improved hit and selection tests.

    * [123942] Added the ItemIgnoresTransformations flag to allow items to

      bypass any inherited transformations.

    * All QGraphicsItem and standard item classes constructors have now had

      their scene arguments obsoleted.

    * [150767] Added support for implicit and explicit show and hide.

      Explicitly hidden items are no longer implicitly shown when their

      parent is shown.

    * [151522] Fixed crash when nesting QGraphicsItems that enabled child

      event handling.

    * [151265] Cursors now change correctly without mouse interaction.

    * Added deviceTransform() which returns a matrix that maps between item

      and device (viewport) coordinates.