Qt 4.5 introduces many new features and improvements as well as bugfixes over the 4.4.x series. For more details, refer to the online documentation included in this distribution. The documentation is also available online: http://doc.trolltech.com/4.5 The Qt version 4.5 series is binary compatible with the 4.4.x series. Applications compiled for 4.4 will continue to run with 4.5. 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 -------------------- New features ------------ - Disk Caching in QtNetwork * Added support for http caching in QNetworkAccessManager. * New classes: QAbstractNetworkCache, QNetworkDiskCache. * QNetworkDiskCache is a simple disk-based cache. - QDate * [207690] Added QDate::getDate(). - QDateTimeEdit * [196924] Improved QDateTimeEdit's usability. It now skips ahead to the next field when input can't be valid for the current section. - QDateTime * [178738] Fixed QDateTime::secsTo() to return the correct value. - QDBusPendingCall / QDBusPendingCallWatcher / QDBusPendingReply * New classes to make calls whose replies can be received later. - QDesktopServices * Added the ability to determine the proper location to store cache files. - QGraphicsItem * Added the QGraphicsItem::itemTransform() function. * [209357] Added the QGraphicsItem::opacity() function. * [209978] Added the QGraphicsItem::ItemStacksBehindParent flag to allow children to be stacked behind their parent item. * Added QGraphicsItem::mapRect() functions. - QGraphicsScene * Added the QGraphicsScene::sortCacheEnabled property. * Added the QGraphicsScene::stickyFocus property. - QGraphicsTextItem * [242331] Added the QGraphicsTextItem::tabChangesFocus() function. - QGraphicsView * [210121] Added action, shortcut and shortcut override support to QGraphicsView and QGraphicsItem. - QLineEdit * Added the ability to set the text margin size. - QMainWindow * Added API to detect which dock widget is tabified together with another dock widget. - QMessageBox * It is now possible to create categories in QErrorMessage to avoid error messages from the same category popping up repeatedly. - QMetaObject * Added introspection of constructors, including the ability to invoke a constructor. - QMetaProperty * [217531] Added the notifySignalIndex() function, which can be used to introspect which signal (if any) is emitted when a property is changed. - QNetworkCookie * [206125] Added support for HTTP-only cookies. - QNetworkProxyFactory * Added support for a factory of QNetworkProxy whose result can change depending on the connection being attempted. * Added support for querying system proxy settings on Mac OS X and Windows. - QSharedPointer / QWeakPointer * Added two new classes for sharing pointers with support for atomic reference counting and custom destructors. - QStringRef * [191369] Added QStringRef::localeAwareCompare() functions. - QTabBar * Added the ability to place close buttons and widgets on tabs. * Added the ability to choose the selection behavior after a tab is removed. * Added a document mode which, on Mac OS X, paints the widget like Safari's tabs. * Added the movable property so that the user can move tabs easily. * Added mouse wheel support so that the mouse wheel can be used to change tabs. - QTabWidget * Added a document mode that removes the tab widget border. - QTcpSocket * [183743] Added support for requesting connections via proxies by hostname (no DNS resolution made on the client machine). - QTextDocument / QTextDocumentWriter * Added the QTextDocumentWriter class which allows exporting of QTextDocument text and images to the OpenDocument format (ISO/IEC 26300). - QtScriptTools * Added a new module to provide a debugger for Qt Script. - Qt::WA_TranslucentBackground * Added this new window attribute to be able to have per-pixel translucency for top-level windows. - Qt::WindowCloseButtonHint * Added a new window hint to control the visibility of the window close button. - Qt::WindowStaysOnBottomHint * Added a new window hint to allow the window to stay below all other windows. - Q_SIGNAL and Q_SLOT * Added new keywords to allow a single function to be marked as a signal or slot. - QT4_IM_MODULE * [227849] Added a new environment variable that specifies the input method module to use and takes precedence over the QT_IM_MODULE enviroment variable. This environment variable allows the user to configure the environment to use different input methods for Qt 3 and Qt 4-based applications. - QXmlQuery * Added a number of overloads to the bindVariable(), setFocus(), and evaluateTo() functions. * Added a property for controlling the network access manager. * Partial support for XSL-T has been added. See the main documentation for the QtXmlPatterns module for details. Optimizations ------------- - The backing store has been re-factored and optimized * Significant improvement in overall performance of painting for widgets. * Reduced the number of QRegion operations. * Improved update handling. * Improved the performance of clipping. * Support for full static contents. - QGraphicsView has been optimized in several areas * Reduced the number of floating point operations. * Improved update handling. * Improved handling of deeply nested item trees. * Improved the performance of clipping for ItemClipChildrenToShape. * Improved sorting speed, so scenes with deeply nested item hierarchies do not affect the performance as compared to Qt 4.4. - Widget style sheets optimisations * Improved the speed of style sheet initialization. - QAbstractItemModel * Optimized QPersistantModelIndex creation and deletion. * Optimized adding and removing rows and columns. - QFileSystemModel * Ensured that the model is always sorted when required. - QTreeView * Optimized expanding and collapsing items. * Optimized expanding animations with large views. - QRect and QRectF * Improves on functions like intersect(), contains(), etc. - QTransform * Reduced the number of multiplications used for simple matrix types. - QRasterPaintEngine * Reduced overhead of state changes; e.g., setPen() and setBrush(). * Introduced a cache scheme for Windows glyphs, thus improving text drawing performance significantly. * Reduced the cost of doing rectangular clipping. * Improved pixmap drawing. * Improved pixmap scaling. * Optimized drawing of anti-aliased lines. * Optimized drawing of anti-aliased dashed lines. Third party components ---------------------- - Updated Qt's SQLite version to 3.5.9. **************************************************************************** * Library * **************************************************************************** - General Fixes * [217988] Fixed a thread safety issue in QFontPrivate::engineForScript which could lead to buggy text rendering when rendering text from several threads. * [233703] Fixed a crash that occured when the input method (for example SCIM) was destroyed while the application is still running. * [233634] When there are several input method plugins available, they are now initialized only when the user switches to them. * [231089] Fixed an issue which caused HTTP GET to fail for chunk transfers. * [193475] Consumer tablet devices (like Wacom Graphite and Bamboo) now work on Windows and Mac OS X. * [203864] Do not warn when deleting objects in their event handler except for Qt Jambi. - QAbstractItemModel * [233058] Fixed the sorting algorithm used in rowsRemoved(). - QAbstractItemView * [221955] Fixed a bug that allowed rows to be selected even if the selection mode was NoSelection. * [244716] Fixed a possible crash when an edited cell was moved. * [239642] Ensured that a rubber band selection is clear if the selection ends on the viewport. * [239121] Ensured that the old selection is clear when starting a selection on the viewport. * [219380] Fixed an update issue when removing rows. - QAbstractSpinBox * [221221] Fixed a usability issue with QAbstractSpinBox subclasses in itemviews. - QBitmap * [216648] Fixed a problem where QBitmaps were being converted to 32-bit QPixmaps when QPixmap::resize() was called. - QByteArray and QString * [239351] Fixed a bug in QCharRef and QByteRef that would cause them to fail to detach properly in some cases. Applications need to be recompiled to use the fix. * [212140] Added repeated() functions to these classes. * [82509] Added QT_NO_CAST_FROM_BYTEARRAY to disable "operator const char *" and "operator const void *" in QByteArray. - QCalendarWidget * [206017] Fixed minimumSize to be calculated correctly in the case where the vertical header has a different text format set. * [206282] Added support for browsing months using the mouse wheel. * [238384] A click on the date cell will now be ignored if the year spin box is opened. - QCleanlooksStyle * [195446] Skip disabled menu and menu bar items when using keyboard navigation. * Fixed a problem with wrapped text eliding on titlebars. * [204269] Fixed a sizing problem with push buttons having mnemonics. * [216172] Fixed a problem with check box on inverted color schemes. - QColor * [196704] Fixed a problem where the QColor::fromHsvF() function could return incorrect values. - QComboBox * [167106] Fixed a problem where the combobox menu would incorrectly show check boxes after a style change. * [227080] Fixed handling of the style sheet background-color attribute on Windows. * [227080] Adjusted pop-up size when using style sheet border. * [238559] Fixed the completer as it was not using the right column with setModelColumn(). - QCommandLinkButton * [220475] Added support for On/Off icon states. - QCommonStyle * [211489] Ensured that checkable group boxes with no title are drawn correctly. * [222561] Made more standard icons available. - QCOMPARE(QtTest) * [183525] Fixed issue that caused QCOMPARE to give incomplete information when comparing two string lists. * [193456] Ensured that nmake install for QTestLib copies the DLL into the bin directory. - QCoreApplication * [224233] Ensured that QCoreApplication::arguments() skips the -stylesheet argument. - QDate * [222937] QDate - fixed issue preventing a minimum date of 01-01-01 from being set. - QDataStream * [230777] Fixed a bug that would cause skipRawBytes() to go backwards if the correct resulting position was larger than 2 GB. - QDateTimeEdit * [196924] Improved QDateTimeEdit's usability. It now skips ahead to the next field when input can't be valid for the current section. - QDBusConnection * [211797] Added support for the GetAll call in the standard org.freedesktop.DBus.Properties interface. * [229318] Fixed race conditions caused by timers being deleted in the wrong thread. - QDesktopServices * [237398] Ensured that, on Mac OS X, returned paths do not have a trailing '/'. - QDesktopWidget * [244004] Fixed a coordinate issue on Mac OS X with multi-screen setups where the screen sizes differ. - QDialog * [214987] Ensured that maximize buttons are not put on dialogs by default on Mac OS X. - QDialogButtonBox * [224781] Dialog buttons without icons now get the same height as dialog buttons with icons to maintain the alignment. - QDockWidget * [237438] Fixed a crash in setFloat() for parentless dock widgets. * [204184] Subclasses are now allowed to handle mouse events. * [173854] Ensured that the size of the dock widget is remembered when it is hidden. - QDomDocument * [212446] Ensured that a new line inserted after an element that indicates whitespace is preserved. - QDomAttr * [226681] Fixed issue that caused specified() to return false if the attribute is specified in the XML. - QEvent * Added more debug operators for common event types. - QFlags * [221702] Fixed issue with testFlag() that gave a surprising result on enums with many bits. - QFormLayout * [240759] Fixed crash in QFormLayout that could occur when a layout was alone in a row. - QFile * [238027] Fixed a bug that would cause QFile not to be able to map a file to memory if QFile::open() was called with extra flags, like QIODevice::Unbuffered. - QFileInfo * [166546] Fixed QFileInfo operator== bug involving trailing directory separators. - QFileDialog * [240823] Fixed issues with file paths over 270 characters in length on Windows. * [212102] Fixed ".." directory issue. * [241213] Fixed some problems when renaming files. * [232613] Fixed a usability issue with UNC path on Windows. * [228844] Fixed a wrong insertion in the filesystemModel that caused persistant model index to be broken. * [190145] [203703] Fixed a bug in getExistingDirectory() that returned /home/ instead of /home, or on Windows, returned c:/temp/ instead of c:/temp. We now match the native behavior. * [236402] Fixed warning in the QFileDialog caused by deleting a directory we have previously visited. * [235069] Fixed issue that prevented QFileDialog from being closed on Escape when the list view had focus. * [233037] Fixed issue that caused the "Open" button to be disabled even if we want to enter a directory (in AcceptSave mode). * [223831] Ensured that the "Recent Places" string is translatable. * Fixed crash on Windows caused by typing \\\ (empty UNC Path). * [226366] Fixed issue that prevented the completer of the line edit from being shown when setting a directory with lower case letter. * [228158] Fixed issue that could cause the dialog to be closed when pressing Enter with a directory selected. * [231094] Fixed a hang that could occur when pressing a key. * [227304] Fixed a crash that could occur when the dialog had a completer and a QSortFilterProxyModel set. * [228566] Fixed the layout to avoid cyclically showing and hiding the scroll bars. * [206221] Ensured that the view is updated after editing a value with a custom editor. * [196561] Fixed the static API to return the path of the file instead of the link (.lnk) on Windows. * [239706] Fixed a crash that could occur when adding a name filter from an editable combo box. * [198193] Ensured that directory paths on Windows have a trailing backslash. - QFrame * [215772] Style sheets: Ensured that the shape of the frame is respected when not styling the border. - QFont * [223402] QFont's QDataStream operators will now save and restore the letter/word spacing. - QFontMetrics * [225031] Fixed issue where QFontMetrics::averageCharWidth() could return 0 on Mac OS X. - QFtp * [227271] Added support for old FTP servers that do not recognize the "SIZE" and "MDTM" commands. - QFuture * [214874] Fixed deadlock issue that could occur when cascading QFutures. - QGLContext * [231613] Fixed a crash that could occur when trying to create a QGLContext without a valid paint device. - QGLFramebufferObject * [236979] Fixed a problem with drawing to multiple, non-shared, QGLFramebufferObjects from the same thread using QPainter. - QGraphicsEllipseItem * [207826] Fixed boundingRect() for spanAngle() != 360. - QGraphicsGridLayout * [236367] Removed (0, 0) maximum size restriction of a QGraphicsItem by an empty QGridLayout. - QGraphicsItem * [238655] Fixed slowdown in QGraphicsItem::collidesWithItem() that was present in Qt 4.4. * [198912] ItemClipsChildrenToShape now propagates to descendants. * [200229] Ensured that context menu events respect the ItemIgnoresTransformations flag. * Enabling ItemCoordinateCache with no default size now automatically resizes the item cache if the item's bounding rectangle changes. * [230312] Mac OS X: Fixed a bug where update() issued two paint events. - QGraphicsLayout * [244402] Fixed issue that could cause a horizontal QGraphicsLinearLayout to stretch line edits vertically. - QGraphicsLayoutItem * Fixed a crash that could occur with custom layouts which did not delete children. - QGraphicsScene * [236127] Fixed BSP tree indexing error when setting the geometry of a QGraphicsWidget. - QGraphicsWidget * [223403] Ensured that QGraphicsWidget(0, Qt::Popup) will close when you click outside it. * [236127] Fixed QGraphicsScene BSP tree indexing error. * Improved rendering of window title bars. * Fixed crash that could occur when a child that previously had the focus died without having the focus anymore. - QGraphicsProxyWidget * [223616] Ensure that context menus triggered by ActionsContextMenu are embedded. * [227990] Widgets are not longer resized/moved when switching themes on Windows. * [219058] [237237] Fixed scroll artifacts in embedded widgets. * [236545] Ensured that the drag and drop cursor pixmap is not embedded into the scene on X11. * [238224] Fixed a crash that could occur when a proxy widget item was deleted. * [242553] Fixed drag and drop propagation for embedded widgets. - QGraphicsSvgItem * [241475] Fixed update on geometry change. - QGraphicsTextItem * [240400] Fixed bugs in mouse press handling. * [242331] Add tabChangesFocus() to let the user control whether the text item should process Tab input as a character, or just switch Tab focus. - QGraphicsView * [236453] Improved Tab focus handling (propagate Tab and Backtab to items and widgets). * [239047] Improved stability of fitInView() with a very small viewport. * [242178] Fixed rubber band debris left in Windows XP style (potentially any style). * Fixed a crash in QGraphicsView resulting from the non-deletion of sub-proxy widgets. * Fixed issue that caused items() to return an incorrect list with an incorrect sort order when an item in the scene has the IgnoresTransformations flag set to true. * Ensured that the painter properly saves/restores its state after a call to drawBackground(). * [197993] Allow any render hint to be set/cleared by the QGraphicsView::renderHints property. * [216741] Fixed handling of QGraphicsView::DontSavePainterState (broken in Qt 4.3). * [235101] [222323] [217819] [209977] Implemented proper font and palette propagation in Graphics View. * [238876] Fixed scroll artifacts in reverse mode. * [153586] Ensured that the text cursor is drawn correctly in transformed text controls in a QGraphicsView. * [224242] Added support for embedding nested graphics views. - QGroupBox * [204823] Fixed a palette inconsistency when using certain styles. - QHeaderView * [239684] Fixed sorting that wouldn't happen when clicking unless the sort indicator is shown. * [236907] Fixed bug that could cause hidden columns to become visible. * [215867] Resizing sections after moving sections could resize the wrong columns. * [211697] Fixed ResizeToContents to always show the full content of cells. - QImage * [240047] Fixed a problem with drawing/transforming sub-images. - QImageReader * [138500] Added the QImageReader::autoDetectImageFormat() function. - QKeySequence: * Added QKeySequence::SaveAs which has values for both GNOME and Mac OS X. * [154172] Improved toString(NativeText) to return more native glyphs on Mac OS X. - QLabel * [226479] Fixed update if showing a QMovie that changes its size. * [233538] Fixed behavior involving changing the color of a label with a style sheet and pseudo-state. - QLineEdit * [179777] Ensured that PasswordEchoOnEdit shows asterisks correctly. * [229938] Fixed issue that could cause textChanged() to be emitted when there was a maximum length set, even though the text was not changed. * [210502] Fixed case-insensitive inline completion. - QLineF * [241464] Fixed issue that could cause intersects() to be numerically unstable in corner cases. The function has been rewritten to be faster and more robust. - QListView * [217070] Fixed issue that could cause scroll bars to appear in adjusted icon mode. * [210733] Made improvements in the way the pagestep is computed. * [197825] Ensured that hidden items are not selectable. - QLocalServer * Added new removeServer() static method to allow the socket file to be deleted after an application has crashed. - QMacStyle * [232298] Draw the sort indicators in the correct direction for table headers. * [198372] Give context sub-menus the correct mask. * [209103] [232218] QToolButton::DelayedPopup is now displayed correctly. * [221967] Bold header text now uses the correct color. * [234491] Also the menu's QFont when when drawing menu items. * Ensure the proper pressed look for tabs on Leopard. - QMainWindow * [192392] Stop excessive updates with unified toolbars when changing the enabled status of an action. * [195259] Ensured that the toolbar button is shown when the unified toolbar is created later. - QMessageBox * [224094] Fixed crash that could occur when specifying a default button that was not one of the buttons listed. * [223451] Fixed a memory leak on a static pointer when the application exits. - QMainWindow * [224116] [228995] [228738] save/restoreState() would not always restore the toolbars in the correct positions. * [215430] Fixed issue that meant that the user could dock widgets and they wouldn't be tabbed even if ForceTabbedDocks was set. * [240184] Fixed an issue that caused QDockWidget to get smaller and smaller by docking and undocking. * [186562] Fixed layout when saving the state with an undocked dock widget and then restoring it * [228110] Re-adding a toobar now also re-docks it. * [232431] Fixed a memory leak caused by setting centralWidget multiple times. - QMenu * [220965] [222978] Style sheets: Made it possible to set border and gradient on items. - QMenuBar * [228658] Fixed broken activated signal behavior. * [233622] Fixed the repaint when a dialog is invoked - QMdiArea * [233264] Mac OS X: Improved performance when dragging sub-windows around. * [233267] [234002] [219646] Removed flickering behavior that could occur when switching between maximized sub-windows. - QNetworkReply: * [235584] Fixed a bug that would cause sslConfiguration() to return a null object if finished() had already been emitted. - QOpenGLPaintEngine * [244918] Fixed a problem with drawing text and polygons onto software rendering GL contexts. - QPainterPath * [234220] Fixed crash due to a division by zero function in addRoundedRect(). - QPicture * [226315] Fixed an assert when trying to load picture files created with Qt 3 into Qt 4. - QPixmap * [223800] Fixed a bug where grabWindow() on a QScrollArea did not work the first time. * [217815] Fixed a bug where grabWidget() did not work properly for resized and hidden widgets. * [229095] Mac OS X: Fixed issue that could cause grabWindow() to grab the wrong parts of the window for child widgets. - QPlastiqueStyle * [195446] Ensured that the background is now painted on selected but disabled menu items for improved keyboard navigation. * [231660] Fixed support for custom icon size in tab bars. * [211679] drawPartialFrame() now passes the widget pointer. - QPainter * QPainter::font(), brush(), pen(), background(): These functions will return default constructed objects when the painter is inactive. * [242780] Fixed segmentation fault that could occur when setting parameters on an uninitialized QPainter. * [89727] Added support for raster operations. * [197104] More well-defined gradient lookup (linear gradients are now perfectly symmetric if inverting the color stops). * [239817] Fixed bug where overline/strike-out would be drawn with the wrong line width compared to the underline. * [243759] Fixed some off-by-one errors in the extended composition modes in the raster paint engine. * [234891, 229459, 232012] Fixed some corner case bugs in the raster paint engine line/rectangle drawing. * Fixed the "one pixel less" clipping bug caused by precision lost when converting to int. * Fixed the composition mode in QPainter raster which was not properly set. * Fixed an assert when the painter is reused after a previous bad usage (e.g., painting on a null pixmap). - QPainterPath * Added convenience operators: +, -, &, |, +=, -=, &= and |=. - QPrinter * [232415] Fixed a problem that caused a an invalid QPrinter object to not update its validity after being passed into a QPrintDialog. * [215401] Fixed the size of the Executive paper format. * [202113] Improved speed when printing to a highres PostScript printer. * [195028] Trying to print to a non-existing file didn't update the validity of the QPrinter object correctly. * [134820] Support CUPS printer instances on Unix systems (Mac and X11). * [201875] Fixed a bug that caused the fill opacity of a brush to be used for the stroke in certain cases. * [222056] Fixed absolute letter spacing when printing. * [234135] Fixed a problem with custom margins for CUPS printers. - QPrintDialog * [232207] When printing to a Qt .pdf or .ps printer under Windows or Mac OS X, pop up a file dialog instead of the native print dialog. - QPrintPreviewDialog * [236418] Fixed a problem that caused opening several QPrintPreviewDialogs and printing to them at the same time crash. - QProcess * [230929] (Unix) Open redirection files in 64-bit mode wherever supported. - QProgressDialog * [215050] Properly stop internal timer that retriggered for no reason. - QProgressBar * [216911] stylesheet bug if minimum value != 0 * [222872] Use the orientation when determining if we should repaint. - QRadioButton * [235761] Fixed navigation with arrow keys when buttons are in different layout - QRegion * [200586] Make QRegion a lot smarter when converting from a QPolygon, to avoid creating a lot of needless rectangles. * For Mac OS X, add QRegion::toQDRgn(), QRegion::toHIMutableShape() and corresponding ::fromQDRgn() and ::fromHIShape(). The ::handle() is still available for 32-bit Mac OS X builds and is the equivalent of ::toQDRgn(). - QScrollArea * [206497] Stylesheet: It's now possible to style the corner with ::corner - QScrollBar * [230253] Simple stylesheets doesn't break the scrollbar anymore. - QSettings * [191901] Added methods setIniCodec() and iniCodec() for changing the codec of .ini files. - QSharedMemory * Don't deadlock when locking an already-held lock. - QSortFilterProxyModel * [236755] Hidden columns in QTableView could become visible * [234419] Fixed a data corruption when adding child and row is filtered out - QSslSocket * [189980] Ensure OpenSSL_add_all_algorithms() is called. - QSslCertificate * [186084] Fixed a bug that would cause timezones in certificate times not to be parsed correctly, leading to valid certificates not being accepted - QSslConfiguration * [237535] Fixed a bug that would cause QSslConfiguration objects to leak memory and eventually corrupt data due to wrong reference counting. - QStandardItemModel * [227426] Fixed drag and drop of hierarchy * [242918] Added ability to change flags of the root item. - QString * [205837] Qt 4.4: format string warnings / small QString conversion clean up. - QSvgRenderer * [226522] Fixed fill-opacity when fill is a gradient. * [241357] Fixed gradients with two or more stop colors at the same offset. * [180846] Fixed small font sizes. * [192203] Add support for gzip-compressed SVG files. * [172004] Respect the text-anchor attribute for embedded SVG-fonts. * [199176] Ensure QSvgGenerator handles fractional font sizes * [151078] Fix parsing of embedded fonts in files that have tags - QSystemTrayIcon * [195943] QSystemTrayIcon now accepts right mouse clicks on Mac OS X. * [241613] Hide the tooltip when open the menu on Mac OS X. * [237911] Only emit QMenu::triggered once on Mac OS X. * [196024] Make it possible to disable context menus on Mac OS X. - QTabBar * [213374] Fixed position of label in vertical bar with stylesheet - QtScript * [177665] Added QScriptEngine::checkSyntax(), which provides information about the syntactical (in)correctness of a program. QScriptEngine::canEvaluate() has been obsoleted. * [192955] Added the ability to exclude the QObject::deleteLater() slot from the dynamic QObject binding, so that scripts can't delete application objects. * [212277] Fixed issue where the wrong prototype object was set when a polymorphic type was returned from a slot. * [213853] Fixed issue that could cause events to be processed less frequently than what's set with QScriptEngine::setProcessEventsInterval(). * [217781] Fixed bug that caused the typeof operator to return "function" when applied to a QObject wrapper object. * [219412] Fixed bug that could cause the in operator to produce wrong results for properties of Array objects. * [227063] Fixed issue where a break statement caused an infinite loop. * [231741] Fixed bug that could cause the implementation of the delete operator to assert. * [232987] QtScript now calls QObject::connectNotify() and QObject::disconnectNotify(). * [233346] Fixed issue where the garbage collector would not be triggered when very long strings were created, causing excessive memory usage. * [233624] Fixed bug that caused enums in namespaces to be handled incorrectly. * [235675] Fixed issue where creating a QScriptEngine would interfere with ActiveQt's QVariant handling. * [236467] Fixed bug that caused QtScript to treat a virtual slot redeclared by a subclass as an overload of the base class's slot. * [240331] Fixed bug that caused QtScript to crash when one of the unary operators ++ and -- was applied to an undefined variable. * If a signal has overloads, an error will now be thrown if you try to connect to the signal only by name; the full signature of a specific overload must be used. * Added support for multi-line string literals. * Added QScriptEngine::setGlobalObject(). * Made it possible to use reserved identifiers as property names in contexts where there is no ambiguity. - QTcpSocket * [235173] Fixed a bug that would cause QTcpSocket re-enter select(2) with an uninitialized timer (when the first call got interrupted by a signal). - QTextCursor * [244408] Fixed regression in QTextCursor::WordUnderCursor behavior. - QTextCodec * [227865] QTextCodec::codecForIndex(int) broken in Qt3Support - QTextEdit * [164503, 232857] Fixed issues where using NoWrap caused selection/background colors to not cover full width of text control. * [186044] Fixed whitespace handling when copying text from Microsoft Word or Firefox. * [228406] Fixed parenthesis characters with RTL layout direction on Embedded Linux. * [189989] Fixed QTextEdit update after layout direction change. - QTextStream * [210933] It is now possible to specify a locale which QTextStream should use for text conversions. - QToolBar * [193511] Fixed stylesheet on undocked toolbar * [226487] Fixed the layout when the QMainWindow as a central widget with fixed size. * [220177] Fixed the layout not taking the spacing into account - QToolButton * [222578] Fixed issues with checked and disabled tool buttons in some styles. * Tool button now allows independent hover styling on it's subcontrols. * [167075] [220448] [216715] Polished stylesheet color, background, and border. * [229397] Fixed regression against Qt3 where setPopupDelay(0) did not work as expected. - QToolTip * [228416] Fixed style sheet tooltips on windows. - QTreeView * [220494] scrollTo() didn't scroll horizontally if the vertical bar was already at the correct position. * [216717] Fixed update when children are added. * [225029] Fixed bug that prevented focus from being shown for non-selectable items when allColumnsShowFocus is set to true. * [226160] Fixed hit detection when first column is moved. * [225539] Fixed a crash when deleting the model. * [241208] Fixed animation when using persistent editors. * [202073] Fixed visualRect which would not take the indentation into account when 1st column is moved. * [230123] Item can no more be expanded with keyboard if setItemsExpandable has been set to false. - QTreeWidget * [243165] selectAll didn't work before the widget was shown * [238003] setCurrentItem would not expand the parent item * [223130] Fixed drag&drop when sort is enabled that would only drop the first column. * [223950] Only allow to drag items when they have the Qt::ItemIsDragEnabled flag set. * [218661] Made sure our internal model can pass the "modeltest" test suite. * [217309] Fixed issue that caused data() for CheckStateRole to return Checked even if some children were partially checked. * [229807] Fix a redrawing problem when scrolling with a different palette role set on Mac OS X. * [236868] Prevent a crash when dragging an item hidden by a tooltip on Mac OS X. - QLocale * Added support for narrow format for day and month names. * Day and month names can now also be fetched as a standalone text. - QDebug * Values of type QBool are now properly outputted with QDebug. - QUndoStack * [227714] Don't crash when owner group is deleted. - QUrl * [204981] Made the QUrl tolerant parser more tolerant * Fixed a bug in QUrl's tolerant parsing of stray % characters (not part of %HH sequences), which would cause it to make the URL even worse * [227069] Fixed a bug that would cause QUrl to not parse URLs whose hostnames start with an IP address (like http://1.2.3.4.example.com) * [230642] Fixed a bug that made QUrl not properly produce proper URLs with relative paths * Modified QUrl to not normalize %HH in URLs unless strictly necessary. QUrl now keeps the original %-encoding of the input unless some operation is executed in the QString components. This also allows for %2f to exist in path components. - QVariant * [215610] prevented assertion when reading from an invalid QDataStream. - QWidget * [222323] [217819] [209977] Improve Qt's font and palette propagation. * [218568] Revert and reopen task 176809 ("when using Qt::PreventContextMenu policy, the context key menu is still not sent to the widget"). * [220502] Ensure that setWindowFilePath() when called with an empty string clears the proxy icon in Mac OS X. * [240147] Enforce exclusivity between the Qt::WA_(Normal|Small|Mini)Size * [168641] Ensure that tablet releases go to the correct widget on X11 and Carbon (i.e., the widget that received the press). * [192565] Fixed a problem with calling QWidget::render(), using a QPrinter as a paint device. * [236565] [168570] Fix regression on X11 where QWidget::restoreGeometry() would restore incorrect geometry if the window was maximized when saved. * [201655] Fix QWidget::scroll() acceleration issue with child widgets on Mac OS X. * [210734] [210734] Fixed a bug where changing the visibility of alien widgets did not generate proper enter/leave events. * [228764] Major improvement of scroll performance. * [238258] [229067] [239678] Flickering with widgets larger than 4096x4096 pixels in size. * [141091] Added full support for Qt::WA_StaticContents. * [238709] Fixed a bug where calling clearMask() did not update the view properly. * [213512] Fixed clipping issue with Qt::WA_PaintOutsidePaintEvent widgets. * [230175] Added support for calling render() recursively. * [238115] Fixed painting issues after calling winId(). - QWindowsStyle * [210069] Fixed a bug in the drawing of comboboxes. - QWindowsVistaStyle * [221668] Respect background color role for item views. * [227360] Current item now gets focus for multiselection views. * [224251] Fixed incorrect painting of inverted and reversed progress bars. * [207836] Fixed a problem with vertical toolbar separators. * [202895] Fixed problem where indeterminate progress bars were not animated when Vista animations were explicitly disabled. * [200899] Message box buttons are now right aligned. - QWindowsXPStyle * [207242] Fixed a static memleak. * [206418] Fixed missing focus rect on tool buttons. * [188850] Fixed a problem with offsets for sliders. * [110091] Tool buttons with arrows are not styled using black windows arrows due to consistency issues with the native theme. - QWizard * [204643] Make sure the maximum size of QWizard is computed properly. - QWorkspace * [125281] fixed active child to be the same when minimizing and restoring the main window. - QtWebKit * ACID3 score 100 out of 100. * Added support for plugins using Netscape Plugin API (NPAPI) for Windows, Mac OS X, and X11. * [211228] Fixed invisible focus rectangle on push buttons. * [211256] Fixed dragging an image from the web view. * [211273] Fixed static build of Qt with QtWebKit. * [213966] Fixed wrong placement of native widget plugins after scrolling. * [214946] Ensured native plugin instances are deleted properly. * [217574] Fixed cursor problem on text input field after focus change. * [218957] Fixed rendering of form elements when using Windows style. * [219344] Added a remark that some web actions have an effect only when contentEditable is true. * [220127] Fixed mouse right click still allowed for disabled view. * [222544] Added an option to print background elements. * [222558] Fixed input method does not work after changing the focus. * [222710, 222713] Fixed issues with TinyMCE editor. * [223447] Ensured that CSS with relative path works on Windows. * [224539] Fixed linkClicked() emitted only once for local anchor URLs. * [225062] Fixed links do not work for QWebView embedded in QGraphicsScene. * [227053] Fixed problem with percent encoded URLs. * [230175] Fixed video rendering when embedded in Graphics View. * [235270] Showed module name when plugin loading fails. * [238330] Prevented multiple instantiation of native widget plugin. * [238391] Prevented crash when printing to file is cancelled. * [238662] Fixed function keys are not mapped. * [241050] Implemented proper painting of CSS gradient. * [241144] Ensured proper actions for some web action types. * [241239] Ensured plugins are not loaded when disabled. * [231301] Fixed an issue on Windows mobile when switching between input modes. - Q3ButtonGroup * [238902] Q3ButtonGroup now looks for children recursively rather than just the direct children like it did in Qt 3. * [200764] Fixed insertion of buttons with IDs in arbitrary order. - Q3FileDialog * [230979] Fixed a crash after a resize and drag on scroll bars. - Q3MainWindow * [240766] Crash while resizing the window while updating layouts. - Q3ListView * [225648] Fixes infinite update. - Q3ProgressBar * [132254] Fixed incorrect painting when totalSteps = 0. * [231137] Fixes progress bar disappearing if you set a style sheet to the application. - StyleSheets * [224095] Fixed white space inside palette(). * Fixed setting style on the application may change the appearance of some widgets. * [209123] Fixed Stylesheets causing unnecessary paint events on enterEvent() and leaveEvent(). * [209123] Fixed setting gradient background to custom widget. - QXmlQuery * [223539] Summary: "node" and other typekind keywords are not allowed as an element name when part of for loop. - QXmlStreamReader * [207024] Added the QXmlStreamAttribute::hasAttribute() function. * [231516] Regression: QXmlStreamWriter produces garbage in "version" attribute of XMLDeclaration. **************************************************************************** * Examples and demos * **************************************************************************** - Pad Navigator example * [236416] Provide a minimum window size for this example. * [208616] No longer builds in console mode on Windows. - Diagram Scene example * [244996] Fix crash when changing the font of a text item and then select other items. **************************************************************************** * Database Drivers * **************************************************************************** - Interbase driver - MySQL driver **************************************************************************** * QTestLib * **************************************************************************** - QTestLib now supports writing benchmarks. - Fixed an issue where tests returned exit code 0, even though tests failed in some rare cases. **************************************************************************** * Platform Specific Changes * **************************************************************************** Unix * Made the iconv-based QTextCodec class (the "System" codec on Unix systems that support it) stateful. So it's now possible to feed incomplete multibyte sequences to the toUnicode function, as well as the first character in a UTF-16 surrogate pair. X11 * Added a QGtkStyle to integrate with GTK+ based desktop environments. * If font config is used the default font-substitutions will no longer be used instead we rely on fontconfig to determine font substitutions as required. * Improved support for KDE4 desktop settings. * [214071] Improved support for custom freedesktop icon themes. * [195256] Use FreeType's subpixel filtering if available, thus honoring Font Config's LCD filter settings. * Added supported for XFIXES X11 extension for proper clipboard support when non-Qt application owns the clipboard. * Icon support for top level windows (_NET_WM_ICON) was improved to support several icons with different sizes. * [211240] In some cases QFileSystemWatcher didn't notify about files that were moved over another files. * [238743] Added support for the _NET_SYSTEM_TRAY_VISUAL property to use the same visual the system tray manager asks us to use. * [229593] Fix font matching with old fontconfig versions. * [167873] Proper event compression for mouse events when using tablets. * [208181] Fix averageCharWidth to be consistent for y!=x ppem * [229070] Fix QPrintDialog assertion * [211678] Fixed a problem with drawing a QPixmaps on different X11 screens. * [221362] Fixed a problem where pixmaps only appeared on the first page in a print preview. * [232666] Fixed a problem with custom page sizes for CUPS printers. * [228770] Fixed a problem that caused the .ps and .pdf filename extensions to not update in the CUPS printer dialog when printing to file. * [230372] Fixed a problem where the number of copies set on a QPrinter object wasn't picked up and updated properly in a QPrintDialog. Windows * Cleartype rendering was previously supported onto QImages with an ARGB32 channel. For performance reasons, cleartype is now only supported on opaque images using the RGB32 or ARGB32_Premultipled format. Widget and pixmap rendering is unchanged * [175075] Antialiased font rendering quality has been greatly improved by taking gamma correction into account. We should now match the native Windows font rendering better, and the fonts look better in general when drawing fonts on different backgrounds. * [221132] Fixed a problem with System Tray menu visibility. * [221653] Fixed a problem incorrectly causing a Task Bar status change. * [202890] Improved platform consistency with spacing in menus. * [157323] QCombobox now slides to open on relevant platforms. * [237067] Calling showMessage on QSystemTrayIcon with empty arguments now hides the current message. * [145612] Setting an object name for a QThread sets the name that is visible in the debugger for more easy debugging multi-threaded application. * [216664] QLocale now follows the current system locale when the user changes it in the Windows Control Panel. * [223921] Fix writing system detection of TrueType fonts added via a QByteArray in QFontDatabase::addApplicationFont on Windows. * [205455] 'mailto:' links works properly with QDesktopServices::openUrl(). * [205516] standardPalette() now returns the system palette for XP and Vista styles. * [207506] Fixed an issue which switches the alignment for input widgets on Vista. * [223951] Added support for VARIANT with IDispatch in ActiveQt. * [224910] Fixed a crash when using the Hierarchy ActiveQt example. * [201223] 'dumpcpp' now prepends the 'classname_' to resolve conflicts. * [198556] QAxServer registering now takes care of '.' before MIME extension. * [223973] Fixed a deadlock in QLocalSocket. * [193077] Fixed activation of ActiveQt widgets in MFC MDI applications. * [238273] Fixed a crash while editing QTableView using japanese IME. * [238672] Fixed a crash when deleting a widget while dragging. * [241901] ActiveQt now supports [out VARIANT*] parameters. * Fix a GDI object leak on the qfileiconprovider. * [200269] Application and systray icons on Windows that had an alpha channel were not drawn correctly. * [239558] Fix a possible crash when reading XPM data containing trigraphs with the Microsoft compilers. * [204440] Fixed a problem with software rendering contexts on Windows, which might have caused rendering errors due to to unresolved extension pointers. * [232263] Fixed a problem with binding textures to a software context under Windows. * [238715] Fixed a problem with alpha-blended cursors under Windows. * [227297] and [232666] Fixed some problems with custom paper sizes under Windows. * [217259] The default printer wasn't correcly detected with some versions of Windows. * [212886] Fixed a problem with network printers not being listed by the QPrinterInfo::availablePrinters() function under Windows. * [205985] Fixed a problem with reusing a QPrinter object to print several jobs with the Microsoft XPS printer driver. * [196281] Fixed QPrinter::setPrintRange() to work under Windows. Windows CE * Support for QLocalSocket and QLocalServer added. * QtWebKit and Phonon are now supported. * One can mark a widget with the attribute WA_ExpectsKeyboardInput to automatically display / hide the standard input panel on focus events. * [223523] Reimplementations of standard library functions filled the global namespace causing problems when linking statically to other third party libraries using the same attempt. * Support for using OpenSSL with Qt on Windows CE Mac OS X * Added the macdeployqt tool that simplifies application deployment. * Improved support of widget stylesheet in Mac. * [218980] - Stacking order of windows and dialogs is fixed, such that dialogs always floats above normal windows, even when the dialog is told to behave as a window. * [219844] - A crash that occurred when using the search buttons on a native file dialog is fixed. * [225705] - FileDialog filters not displaying correctly is fixed. * [239155] - Pop-ups will now close when clicking on a window other than the modal window that opened the pop-up. * [210912] - Show event not sent when reshowing a window from minimized state is fixed. * [228017] - QMenu will now close when expanding a system menu. * Added support for Qt to use Cocoa as its backend instead of Carbon. This is primarily for 64-bit applications, but is also available for 32-bit frameworks as well. 32-bit is still Carbon by default. Passing a 64-bit architecture or -cocoa on the command-line will build Qt against Cocoa. Using Cocoa requires Mac OS X 10.5 (or higher) and cannot be used with the -static nor -no-frameworks option. The define QT_MAC_USE_COCOA is available when Qt is built against Cocoa. * Fix a bug that would prevent a window that had been maximized via setMaximized() to go back to normal size when clicking on the window's maximize button. * Added QMacCocoaViewContainer for embedding Cocoa (NSView) controls into a Qt hierarchy. This feature works for either Carbon or Cocoa, but requires Mac OS X 10.5 or greater. * Added QMacNativeWidget for embedding Qt widgets into non-Qt windows (Carbon or Cocoa). * Added MacWindowToolBarButtonHint for controlling whether or not the toolbar button is shown in Qt windows. * QEvents posted via QEventLoop::postEvent() are now treated as a standard event loop source, like timers and normal input events. This means that is should no longer be necessary to run a busy loop to sendPostedEvents() when QApplication is not the main event loop (e.g. when using Qt in a plugin). * [239646] Shortcuts for sub-menu are now disabled when the menu item is disabled. * [241434] Honor the LSBackgroundOnly attribute if it exists in the application's Info.plist. * [239908] More robustness when encountering different types in reading LSUIElement value. * [234742] Add support Qt::XButton1 and Qt::XButton2. * [236203] Much better support for loading multiple Qt's with different namespaces. * Add Qt::AA_MacPluginApplication that allows bypassing some native menu bar initialization that is usually not desired when running Qt in a plugin. * [205297] Applications Dialogs are now marked as application modal in Carbon. * Tooltip base is now set correctly in the application palette. * [222912] [241603] Qt applications no longer reset their palette back to the system palette on every application activate. Only if the values from the system are different from the last time. This should result in custom palette colors/brushes being kept across application activations. * [211758] Fixed a clipping problem when printing multiple pages on a Mac OS X printer. * [212884] Fixed a crash when printing images on Mac OS X. * [219877] Fixed a problem with a QPrinter object not being valid after setting the output format to PDF or PostScript. * [229406] Fixed crash when display mirroring gets enabled. * [189588] Fixed a bug where QColorDialog::getColor(...) always returned a valid color. Qt for Embedded Linux - Screen drivers * The SVGAlib driver is no longer supported, due to architectural changes. * [235785] Detect VGA16 video mode and warn that it is not supported. - Mouse and keyboard drivers * [243374] Fixed bug where PC mouse driver could not be loaded when configured as loadable plugins. * Added Linux Input Subsystem mouse and keypad drivers - General fixes * [242922] Run as server by default when compiled with the QT_NO_QWS_MULTIPROCESS macro defined. * Fixed bugs where wrong cursor would be shown in some cases. * Respect min/max size on initial show also for windows without a layout. * Fixed loading of font plugins when QT_NO_FREETYPE is defined. * Autodetect PowerPC in configure. * Add support for precompiled headers. **************************************************************************** * Compiler Specific Changes * **************************************************************************** **************************************************************************** * Tools * **************************************************************************** - Build System * [218795] add support for -nomake configure option on Windows to exclude build parts like on other platforms * The -tablet configure option on X11 was renamed to -xinput * [136723] Have moc issue a warning if a Q_PROPERTY declaration does not contain a READ accessor function. * [188529] Fixed bug that caused moc to get stuck in an infinite loop if two files included eachother and the include path had the prefix "./". * [203379] Changed moc code generator so that lint no longer reports problems with the generated code. * [210879] moc no longer generates any implementation for pure virtual signals. * [234909] Fixed bug that caused moc to treat /*/ as a full C comment. - Assistant - Designer * Added filter widgets in Widget Box and Property Editor. * Added layout state display to Object Inspector. * Enabled changing the layout type of laid-out containers. * Added handling of spanning QFormLayout columns. * Added convenience dialog to quickly populate QFormLayouts. * Added support for embedded device design profiles. * Changed the selection modifiers to comply to standards; enabled rectangle selection using the middle mouse button; added shift-click-modifier to cycle parents when selecting. * Added "translatable" flag and disambiguation comment to string properties. * Added attribute editors to item-based widgets. * Changed QUiLoader to use QXmlStreamReader instead of QDom. * Ui files with unknown elements are now rejected. * [123592] While dropping a dock widget a main window - make the dock "docked". * [126269] Added the ability to morph widgets into compatible widgets. * [126997] Added support for QButtonGroup. * [145813] Added a listing function to obtain the available layouts to QUiLoader. * [155837] Added support for QWizard. * [164520] Added automatic detection of changes to the qrc resource files from external sources. * [166501] Added "translatable" checkbox to string properties making it possible to exclude it from the translation. * [171900] Indicate Qt 3 compatibility signals and slots using a different color. * [173873] Position pasted widgets at mouse position if possible. * [183637] Introduced Widget Box "Icon view" mode to reduce scrolling, available via context menu. * [183671] Added automatic retranslation upon language change of UIs loaded via QUiLoader. * [185283] Added incremental search facility to Object Inspector. * [191789] Added pkgconfig-Files for Qt Designer libraries. * [198414] Enabled promotion of QMenu/QMenuBar by object inspector context menu. * [201505] Extended QDesignerIntegration::objectNameChanged() to pass on old object name. * [202256] Fixed action editor and object inspector not to resize header when switching forms. * [211422] Fixed QScrollArea support to handle custom QScrollArea widgets with internal children. * [211906] Enable promotion of unmanaged widgets by object inspector context menu. * [211962] Enabled widgets to span columns in a QFormLayout. * [212378] Made the rich text editor dialog, the plain text editor dialog and the style sheet editor dialog remember their geometry. * [213481] Fixed a crash while form loading by preventing it from adding layouts to unknown layout types. * [219381] Fixed Action editor to reflect changing the shortcut in the property editor. * [219382] Added tooltip, checkable and shortcut properties to the action editor dialog. * [219405] Added support for the stretch and minimum size properties of QBoxLayout and QGridLayout. * [219492] Added an icon preview to the resource image file dialog on X11. * [220148] Fixed handling of the QMainWindow::unifiedTitleAndToolBarOnMac property. * [223114] Fixed a crash on removing a dynamic QUrl property. * [229568] Added Q3ComboBox. * [230818] Fixed a bug which caused duplicate names to occur when copying & pasting spacers. * [233403] Fixed a painting bug which caused red line layout markers to disappear depending on grid settings. * [233711] Added a warning when saving a container-extension-type container with unmanaged pages. * [234222] Fixed a bug which caused the autoFillBackground property to be reset during Drag and Drop operations. * [234326] Fixed the QDesignerIntegration::objectNameChanged() signal to work correctly. * [236193] Fixed a crash caused by invalid QSizePolicy values resulting from Qt 3 conversion. * [238524] Ignore constructor-added items of custom widgets inheriting QComboBox. * [238707] Fixed pkgconfig file generation to honour -qt-libinfix. * [238907] Disabled reordering of Spacers and Layouts causing uic to warn " isn't a valid widget". * [232811] Correctly show empty string values in preview. * [214637] Single click expands/collapses classes in property editor * [241949] Update the object inspector properly in case of undoing a reparent widget command. - uic * Ui files with unknown XML elements are now rejected. * [220796] Added code for adding items to widgets of class Q3ComboBox. - uic3 * [231911] Fixed the conversion of boolean font attributes. * [233802] Fixed -extract option on Windows. * [236193] Fixed the conversion of QSizePolicy's "Ignored" value. - Linguist - Linguist GUI * Much improved form preview tool * Removed translations column from message index for it being useless. * Phrasebooks have language settings now * [141788] Support translating into multiple languages simultaneously. * [183210] Whitespace is now visualized * [182866] Font resizing in translation textedits * [187765] Support opening files via Drag & Drop - Entire Linguist toolchain - [201713] Add support for specifying the source language. - file formats * The .qm files now can be read back by the toolchain, not only Qt. * Added support for GNU Gettext .po files. - Qt's own .ts format * New element to store purely informative comments * New element to store comments from translators * New element wildcard to support user extensions * New elements and to store values from before the last heuristic merge by lupdate - lupdate * Parse //: and /*: */ comments as extra comments for translations. * Added support for new QT_TR*() macros. * Added support for QtScript. * Better error reporting. * More accurate processing of .pro files. * Added options -disable-heuristic, -nosort, -target-language, -source-language. * [197391] Support for storing source code references with relative line numbers or no references at all. Omit line numbers from .ui file references at all. These reduce the size of patches and avoid merge conflicts. Option -locations. * [197818] Add support for UTF-16 encoded sources. * [209778, 222637] Somewhat improved C++ parser, in particular with respect to namespaces. * [218671] Accept Q_DECLARE_TR_FUNCTIONS. * [212465] Default context is now the empty string, not "@default". This codifies what previously was an intermittent bug. * [220459] Collect all source code references for each message. - lconvert * New tool for converting between file formats and filtering file contents. - configure - qtconfig * Added option to set style and palette settings back to system defaults. - qt3to4 * [218928] [219127] [219132] [219482] Misc. updates to the porting replacement rules. **************************************************************************** * Plugins * **************************************************************************** - QTiffPlugin - QSvgIconEngine **************************************************************************** * Important Behavior Changes * **************************************************************************** - Event filters - QFileDialog On Mac, native dialogs are now used when calling show, open, or exec on a QFileDialog, QColorDialog, QPrintDialog, or QFontDialog (i.e not only when using the static functions) QFileDialog/QFileSystemModel always return Qt separators ("/") regardless of the platform. It can still handle native separators for Windows. To convert the Qt separators to native separators use QDir::toNativeSeparators(). - QGraphicsTextItem Tab input is send to the document by default, inserting a character. You can get the old behavior of switching Tab focus by setting setTabChangesFocus(true) (QGraphicsTextItem's Tab handling now behaves identically to QTextEdit and QTextBrowser). - QGraphicsView QGraphicsView now propagates Qt::Key_Tab and Qt::Key_Backtab to the scene, which sends this to the items. Similar to how QWidget works, this event is caught in QGraphicsItem::sceneEvent() and QGraphicsWidget::event() to handle tab input. Tab input is also proxied to embedded widgets. This allows and item or widget to handle Tab keys (e.g., text input). - QLocale The locale database was updated to the Unicode CLDR database version 1.6.1 When the system locale is changed, the LocaleChange event will be sent to all widgets that don't have a locale explicitely set. - QWebPage Starting with Qt 4.5, the base brush is used for the default background color of the web page. Before, it was the background brush. - QWidget Font and palette settings assigned to QWidget directly take precedence over application fonts and palettes. Focus policies that are set on a widget are now propagated to a focus proxy widget if there is one. Windows with fixed size (that are set with QWidget::setFixedSize() function or Qt::MSWindowsFixedSizeDialogHint window hint) might not have a maximize button on the titlebar. The behaviour of the window hints was changed to follow the documentation. When the Qt::CustomizeWindowHint is set, the window will not have a titlebar, system menu and titlebar buttons unless the corresponding window hints were explicitely set. Setting Qt::WA_PaintOnScreen no longer has any effect on normal widgets. The flag can still be used in conjuction with reimplementing paintEngine() to return 0 so that GDI or DirectX can be used, as previously documented.