1 Qt 4.6 introduces many new features and improvements as well as bugfixes
2 over the 4.5.x series. For more details, refer to the online documentation
3 included in this distribution. The documentation is also available online:
5 http://qt.nokia.com/doc/4.6
7 The Qt version 4.6 series is binary compatible with the 4.5.x series.
8 Applications compiled for 4.5 will continue to run with 4.6.
10 Some of the changes listed in this file include issue tracking numbers
11 corresponding to tasks in the Qt Bug Tracker, the (now obsolete) Task
12 Tracker, or the Merge Request queue of the public source repository.
14 Qt Bug Tracker: http://bugreports.qt.nokia.com
15 Task Tracker: http://qt.nokia.com/developer/task-tracker
16 Merge Request: http://qt.gitorious.org
18 ****************************************************************************
20 ****************************************************************************
25 - QState, QStateMachine
26 * New classes for state machine framework added to QtCore.
29 * New animation framework added to QtCore
32 * New class for handling multitouch events added to QtGui
34 - QGesture, QGestureRecognizer
35 * New gesture framework added to QtGui
37 - QMatrix4x4, QGenericMatrix, QVector2D, QVector3D, QVector4D, QQuaternion
38 * New classes to support 3D applications.
40 - QGLShaderProgram, QGLShader
41 * New classes for using shader programs written in the GL Shading Language.
44 * New classes for applying graphics effects to graphics items and widgets.
47 * New class for DOM access added to QtWebKit
49 - QAudioInput, QAudioOutput
50 * New audio input and output classes.
52 - QAbstractVideoSurface, QVideoFrame
53 * New abstract video output classes.
55 - OpenVG graphics system added.
57 - Added 800x480 screen mode to qvfb configuration dialog.
59 - Improved support for input methods in graphics view.
61 - [MR#1742] Added new multimedia keys to the Qt::Key enum.
63 - Boxes demo ported to use new 3D math and shader program classes.
65 - QtTest now supports outputting XUnit XML documents, for integrating
66 with existing continuous integration systems. This is enabled by
67 running the test program with the -xunitxml option.
70 * The minimum required version of the D-Bus reference library is
72 * Support for reading and writing of custom property types added.
73 * Support for getting return arguments in remote method invocation
74 via QMetaMethod::invokeMethod.
76 - The QtScript module is now based on the 3rdparty JavaScriptCore library. It
77 is only available under the LGPL or a compatible license.
82 - Optimized rendering strategy in QGraphicsView
83 * See list of Important Behavior Changes below
85 - Improved delivery of posted events on Windows
88 ****************************************************************************
90 ****************************************************************************
95 * [MR#972] Added API to move items
96 * [MR#1072] Added function beginResetModel() / endResetModel()
100 * New overloads for QByteArray::insert() and QByteArray::prepend().
101 * [MR#1286] Added value_type typedef for STL compatibility
103 - QEventDispatcherGlib (internal class)
104 * Fix a regression introduced in 4.5.3 that would cause timers to not
107 - QEventDispatcherUNIX (internal class)
108 * Improve detection of monotonic clock support to include
109 non-POSIX.1-2001 compliant systems.
110 * [250681] Fix time change detection on UNIX systems without monotonic
113 - QEventDispatcherWin32 (internal class)
114 * Changed the threshold for using multimedia timers to 20ms (was 10ms).
115 * Changed the way Qt's posted events are sent by the event
116 dispatcher. They are now driven on top of a Windows message
117 instead of an explicit call in processEvents(). This means that
118 posted events are sent even when a Windows modal message loop is
119 running (for example, when the user is moving a window or when a
120 native modal dialog is visible).
121 * Fixed a bug that would allow the same timer id to be used by multiple
125 * Make QFile::resize() more robust when operating on buffered files.
128 * [259514] fixed a possible dead-lock in the destructor.
129 * Added the possibility to pass the flag Qt::UniqueConnection to
131 * Fixed race conditions that occured when moving object to threads
135 * Improved performance of plugin loading by reusing the plugin cache
136 instead of loading it every time.
138 - QProcessEnvironment
139 * New class; support for easy access to key/value pairs in the process
143 * New pattern syntax "QRegExp::WildcardUnix" with wildcard character
147 * New pointer class for cleaning up objects when leaving the current
151 * Added support for creating the object along with the internal private
152 data in one single memory allocation. (QSharedPointer::create)
153 * Fixed a bug where, in a race condition, QSharedPointer could track a
154 pointer that was being deleted.
157 * Instantiate the CP949 codec when building with -no-iconv.
160 * [221316] Fixed crash on large input.
161 * Improved reading utf8/utf16/utf32 data by correctly skipping the
162 ByteOrderMark when reading data by one character at a time.
165 * [249997] Document that QThread priority has no effect on Linux.
168 * Made QUrl hostname parser a lot stricter, requiring compliance
169 to STD3 to validate, thus preventing invalid hostnames from
170 being accepted. See below in "Important Behavior Changes".
173 * [QTBUG-3543] Fixed a bug in createUuid() which caused multiple
174 threads to generate the identical UUID sequences.
177 * Many optimisations.
178 * Added QVariant::toFloat() and QVariant::toReal().
179 * Added QVariant(float) constructor.
180 * qvariant_cast<QVariant> and QVariant::fromValue<QVariant> are now
182 * Added support for math3d types.
185 * Added support for tracking QObject-derived classes that aren't
186 attached to a QSharedPointer.
187 * Added QWeakPointer::data which allows you to obtain the pointer
188 being tracked (without protection).
189 * Added operator-> like the above data(), but requires a #define.
192 * [256468] Fixed comment indentation.
198 * Now escape the double quote (").
201 * [256502] Fixes selectionModel::hasSelection return value after
203 * [MR#1426] Fixes some issues with Shift-selection
204 * [MR#1668] New QAbstractItemView::setDefaultDropAction
207 * [QTBUG-739] Removed internal widgets from QApplication::topLevelWidgets().
210 * [252943] QCalendarWidget::setDateTextFormat() reset the format if the
214 * [246999] Fixed view not updating when the model changed dynamically.
217 * [220195] Fixed keyboard search when current index is -1.
220 * [246056] Fixed a possible assertion when setting the completer prefix.
223 * Introduced RequestSoftwareInputPanel and CloseSoftwareInputPanel events.
226 * [256466] Fixed the dialog not always returning the selected style.
229 * [QTBUG-2354] Support certain 'Microsoft' platform symbol fonts which
230 also contain a regular unicode table for exactly the symbol range of
234 * Make alphaMapForGlyph() generate the correct color table for
235 Indexed8 and Mono glyph images. Fixed the "all glyphs are white
236 boxes" problem in OpenGL1 paint engine.
239 * [176401] Account for right bearing in bounding rect.
241 - QGraphicsAnchorLayout
242 * Support for expanding size policy has been removed. (The Qt 4.6 Beta
245 - QGraphicsBlurEffect
246 * Since the 4.6 Beta, Qt::RenderHint has been moved to
247 QGraphicsBlurEffect::BlurHint.
248 * Input contexts are not activated for disabled widgets anymore.
249 * [250555] Data copied from Mozilla Firefox can now be pasted correctly to
253 * Many optimizations.
254 * Fixed bug and improved accuracy of QGraphicsItem::childrenBoundingRect().
255 * Introduced QGraphicsItem::ItemHasNoContents.
256 * Introduced QGraphicsItem::ItemSendsGeometryChanges (see Behavioral
258 * Introduced QGraphicsItem::focusProxy(), focus proxy support.
259 * Introduced QGraphicsItem::ItemNegativeZStacksBehindParent.
260 * Introduced QGraphicsItem::ItemIsPanel, light-weight window support.
261 * Introduced modality support for QGraphicsItem panels.
262 * Introduced activation support.
263 * Introduced QGraphicsItem::stackBefore().
264 * Cached items are now always invalidated when update() is called.
266 * Added a new set of properties to set a transformation on an item.
269 * Introduced QGraphicsLayout::addChildLayoutItem().
272 * New class; inherits QGraphicsItem and adds notification signals and
273 property declarations.
275 - QGraphicsProxyWidget
276 * [251407] Fixed window flag handling. Now QGraphicsProxyWidget's flags
278 * Fix Qt::ClickFocus policy.
281 * Many optimizations.
282 * [245317] Fixes to mouse grabbing behavior.
283 * Fixed delivery of double-click events after explicit grab and then ungrab.
284 * Rewrote the internal rendering to use a recursive instead of an iterative
286 * Ensure hover enter events are delivered when an item is pressed.
287 * Introduced activation support.
288 * Fixed bugs in initial focus support.
291 * Now inherits from QGraphicsObject instead.
294 * New class; eases animation of transformations for QGraphicsItem.
297 * Many optimizations.
298 * Fix mapToScene(QRect) to avoid extra unnecessary adjustments.
299 * Introduced QGraphicsView::isTransformed().
300 * [QTBUG-4151] Items with parent that sets ItemClipsChildrenToShape were
304 * Now inherits from QGraphicsObject instead.
305 * Interactive resizing of top level windows now respects height-for-width
307 * Reduced memory footprint.
310 * [208320] Make sure the sort indicator is taken into account for the size
312 * [255574] Make sure the size hint for the section depends on visible
316 * [255627] Fix floating point exception in
317 QImageReader::setScaledSize(QSize(0, 0)).
320 * [248948] Clear selection when redoing a delete operation.
321 * [QTBUG-5261] Fixed bug where erasing characters from a textedit did not
325 * [243335] Fixed the visualRect to return correct values when the widget is
327 * [MR#666] Fixed selection with Shift-Arrow/Shift-Click in QListView's IconMode
330 * [226060] Adding actions to a toolbar would always make the next toolbar
334 * [252610] Fixed position of the shortcut text while setting a stylesheet
338 * [260873] Fix mouse interaction while undocking a widget from the main
340 * Dock areas didn't get a splitter if their dock widgets were not
344 * New qt_paint_device_metric() function to replace the friend declarations
345 for window surface classes that need to access metric().
348 * [QTBUG-1666] Made QPainter::drawText() respect Qt::TextDontClip flag
349 also in vertical direction.
350 * [254658] Improved clipping performance in OpenGL paint engine.
353 * [QTBUG-1537] Fixed bug where the points of a rounded rectangle were added
354 in counter-clockwise order instead of clockwise order like other shapes.
357 * [QTBUG-2738] Made QPen::setDashOffset() work with non-custom dashed lines.
360 * Optimized width(), height(), isNull() and depth().
361 * [QTBUG-2832] Fixed bug where calling fill on pixmap with active painter
365 * Fixed crash when clicking on a text edit which was smaller than the
366 height of the font used.
369 * [QTBUG-3555] Fixed a bug in the Plastique style that would cause an
370 ASSERT failure in QFont when the application font has a pixel size set.
373 * [QTBUG-4497] Removed redundant SetPen command in the postscript code when
374 reusing a QPrinter object.
376 - QPrintPreviewDialog now uses a QMainWindow with a proper QToolBar, instead
380 * [255581] Fixed sizeHint recalculation bug.
383 * [QTBUG-4210] Fixed bug where bitmaps were painted black instead of in pen
387 * Minor optimizations.
389 - QSortFilterProxyModel
390 * [251296] Fixed bugs in which filtered items could not be filtered.
393 * [206494] Added ability to style pressed slider with stylesheet.
396 * [259226] Fixed setting a stylesheet on a QSpinBox to change the arrow
398 * [255051] Fixed sizeHint update bug.
401 * [255652] Fixed crash while using takeRow with a QSortFilterProxyModel.
404 * [QTBUG-5212] Fixed bug where thick strokes around small shapes could
405 cause holes in the stroke.
408 * [196326] Fixed having a stylesheet on a QTabBar resulted in some tab
409 names being slightly clipped.
410 * [241383] Added ability to style the close tab button with style sheet
413 * [191545] Selections work more similarly to well-known spreadsheets.
414 * [234926] Fixed sorting after changing QTableView header.
415 * [244651] [245327] [250193] [QTBUG-5062] Spans get plenty of love with
416 performance improvements, support for row/column insertioa and removal,
417 and better keyboard navigation.
420 * [234641] Fixed takeItem to cause the view to be updated.
423 * [207189] Support setting font size using short hand syntax in the
425 * [201228] Remove implicit margin on bullet lists when exporting to HTML.
426 * [240086] Fixed bug which caused floating objects which span several
427 pages to float into the second page of the document even when it's
428 the only existing object, causing the document to contain a blank
430 * [240325] Even with wrap mode set to Qt::TextWordWrap, the layout
431 would sometimes break outside word boundaries when floating objects
432 affected the width available to the text.
433 * [MR#681] Added support for roman numbering for lists
434 * [MR#1753] Fixed escaping HTML attributes QTextDocument::toHtml()
438 * [QTBUG-4468] Count tabs as multiple characters when applying a fixed
440 * [176401] Take into account the negative right bearing of the last
441 character in an item of text if the glyph extends beyond its ascent.
444 * Fixed a bug where tooltips were not shown in popups (Windows only).
447 * [234930] Be able to use :has-children and :has-sibillings in a stylesheet.
448 * [252616] Set QStyleOptionViewItemV4::OnlyOne flag when painting spanning
450 * [245654] Fixed expandAll when deleting and recreating a mode for the tree.
451 * [239271] Fixed missing update when adding a row when the first column is
453 * [258225] Fixed scrollTo with center and bottom.
456 * [253109] Shows the widget when calling setItemWidget.
457 * [MR#1393] Use stable sorting.
460 * Added inputMethodHints property.
461 * [201649] Added QWidget::previousInFocusChain.
462 * [254563] Fixed a crash when setting focus in a widget tree that
463 contains invisible widgets.
464 * [QTBUG-5012] Fixed uninitialized background when using QWidget::render
465 with Qt::WA_NoSystemBackground and window opacity set.
471 * Made sending of invalid/incomplete messages consistently fail with error
472 (no more assertions).
473 * [249528/QTBUG-3833] Added an overload of connect() that allows one to
474 specify strings for matching arguments.
476 - QDBusServiceWatcher
477 * New class; supports efficiently watching for a service to be created,
478 deleted or to change owners.
484 * Only disconnect from host when all bytes have been written.
485 * New setSocketOption method.
488 * Do not buffer the complete POST data anymore when HTTPS is used.
489 * QHttp is now obsolete and replaced by QNetworkAccessManager.
492 * Fix timeout when waiting for a connection on Unix.
494 - QNativeSocketEngine
495 * Do not set the OS socket send and receive buffer size. The OS
496 should auto tune these values for us.
498 - QNetworkAcessManager
499 * [242916] Add possibility to send HTTP DELETE requests.
500 * Connection count per HTTP server increased to 6 on Desktop, 3 on Symbian.
501 * Optional HTTP pipelining support.
502 * General HTTP performance improvements.
505 * [257322] Add possibility to ignore specific SSL errors.
506 * New isFinished() method.
509 * [251830] Fix version() and serialNumber() methods.
512 * [257322] Add possibility to ignore specific SSL errors.
513 * Fix build with openssl 1.0.0 betas.
514 * Trigger a SSL transmission when reading from the socket. In certain
515 cases the connection stalled when a buffer limit was used.
521 * setEntry() was inserting entries instead of replacing them.
522 * Clarified documentation for isEmpty().
525 * Fix RGB565 mode in bindTexture().
526 * Map mipmaps work on OpenGL/ES 2.0 systems in bindTexture().
527 * Improve performance of QGLContext::currentContext().
530 * Increase unit test coverage and fix some long-standing issues.
531 * Improve performance of code that tests QGLFormat options.
532 * operator==() now tests for equality on all fields.
534 - QGLFramebufferObject
535 * Add support for the ARB_framebuffer_object, OES_framebuffer_object,
536 and OES_packed_depth_stencil extensions.
537 * Unbind the texture after it is initialized.
538 * Don't destroy the texture target on cleanup if one wasn't created.
540 - QGLFramebufferObjectFormat
541 * New class for controlling fbo options.
543 - Improvements to context sharing and object cleanup logic.
546 * [249919] Clean up the gradient cache in the right context.
548 - OpenGL (ES) 2.0 Paint Engine
549 * Re-written the OpenGL (ES) 2.0 Paint Engine's shader manager to use new
550 shader API and to allow custom code from E.g. Pixmap Filters to be
551 instered into the fragment "pipeline".
552 * Fixed conical gradients.
554 - Added a static function, QGL::setPreferredPaintEngine(), to allow users
555 to set the preferred GL paint engine.
557 - Cleaned up usage of OpenGL extensions. QtOpenGL now uses the OpenGL 2.0
558 names of methods rather than using the EXT postfix. However, when resolving
559 extensions, QtOpenGL will also try postfixing EXT if the OpenGL 2.0 name is
562 - Fix QGLWidget::showFullscreen() on EGL platforms.
564 - Added lots of OpenGL autotests.
569 - Many optimizations.
570 - Improved ECMA script compliance.
571 - New method, QScriptString::toArrayIndex(), for converting QScriptString
572 to a QtScript array index.
577 - [QTBUG-3162] Views for Sql table models should not reset state on failed
579 - [QTBUG-5251] Fix retrieval of SQL 'TIME' information for PostgreSQL.
580 - Better error checking in case of failed query.
581 - [QTBUG-5179] Fixed floating point number truncation in qsqlpsql plugin.
582 - [QTBUG-551] Fixed Oracle batchExec using strings as out params.
583 - Updated sqlite to 3.6.19 + readded our patches.
584 - [QTBUG-3736] ODBC: Retrieved in ascii, should be stored in ascii.
585 - Fixed issue with multiple lookups to same table/field in
586 QSqlRelationalTableModel.
587 - Updated documentation of setForwardOnly.
588 - [QT-754] TDS: Fixed improper formatting of date values.
589 - TDS: Fixed missing field/table name escaping.
590 - ODBC: Fixed setForwardOnly not being reset on when the query is reset.
591 - [QTBUG-4510] Add reconnection option to the mysql driver.
592 - [222678] Fixed QSqlTableModel: trying to delete the wrong row.
593 - Interbase: Fixed crash when calling numRows on unknown query type.
594 - DB2: Don't return an error when the table is just empty.
595 - [17327] Added OCI support for synonyms to tables created by another user.
596 - [176267] Fixed mysql driver not knowing the difference between tables and
598 - Fixed determination of end of ODBC string on deficient drivers.
599 - Added ability to open sqlite databases readonly.
600 - Fixed race condition on reopening an ODBC connection.
601 - Fixed invalid use of statics in the defaultCasing code.
602 - Fixed proper quoting under odbc.
603 - [252450 & 246125] Fixed failed queries due to MySql driver auto-preparing.
604 - QSqlDatabase now has a database level precisionPolicy. Queries now default
606 - Add proper iODBC linking support.
612 * [245602] [204686] Fixed gradient and solid-color referencing.
613 * [202426] Made attribute inheritance work with 'use' tags.
614 * [250618] Fixed gradient on strokes.
615 * [254040] Added support for 'vector-effect'.
618 * [257052] Changed drawImage() to ignore aspect ratio.
626 * New class; introduced to implement DOM like operations on a web page.
629 * New properties for an URL and a focus management.
630 * New signals delivering current loading status.
633 * New class for embedding the WebInspector as a QWidget
636 * Streaming operators for saving and restoring QWebHistory's state.
639 * New property; preferredContentsSize for setting layout of the page in the
641 * New slot; shouldInterruptJavaScript, called when JavaScript program is
644 - QWebSecurityOrigin:
645 * New functions for defining local URL schemes.
648 * New options for text encoding and off-line web application cache (HTML5).
651 * Support for render hints.
657 * Set the codec to UTF-8 if codec not present or unknown.
663 * [245219] Added QXmlQuery::setFocus(const QString &focus).
669 * [258526] Rotate the image if the tiff file contains an orientation tag.
670 * [254317] Add support for mono and indexed format
672 Third party components
673 ----------------------
675 - Updated FreeType to version 2.3.9.
677 - Updated harfbuzz to the latest version from fd.org.
679 - Updated sqlite to version 3.6.19.
681 - Updated libpng to version 1.2.40
684 ****************************************************************************
685 * Platform Specific Changes *
686 ****************************************************************************
688 - Added support for the Symbian platform with integration for the S60
691 - Added community supported Qt ports for QNX and VxWorks. See platform
692 notes in the Qt documentation for details.
694 - Improved support for AIX using IBM's Visual Age C/C++ compiler
697 - Improved support for Solaris using Sun Studio 12 (CC 5.9).
699 Qt for Unix (X11 and Mac OS X)
700 ------------------------------
702 - Added support for thread-safe FD_CLOEXEC file-descriptor creation
703 where supported by the operating system (currently only Linux).
705 - Ensured that system calls where EINTR is a possible result are
711 - KDE Integration: Improved the integration into KDE desktop (loading of KDE
712 palette, usage of KColorDialog and KFileDialog) using the GuiPlatformPlugin
714 - Fixed pasting the clipboard content to non-Qt application on X11 when the
715 requested format is image/ppm.
717 - On X11, Qt now supports the _NET_WM_SYNC protocol.
719 - On X11, Qt now supports the SAVE_TARGET protocol that allows to keep
720 clipboard contents if the application that owns the clipboards exits
722 - [QTBUG-4652] On X11, clipboard content can be properly retrieved even when
723 an application asks for the unsupported target. This fixes copying and
724 pasting data when using Synergy.
726 - [MR#797] Fixed a crash when using QX11EmbedContainer/Widget on x86_64.
728 - [MR#1111] Emit workAreaResized when _NET_WORKAREA is changed on X11.
730 - [QTBUG-3620] Fixed bug on X11 that caused bitmap fonts to become so small
731 it was unreadable when printed or presented in a print preview widget.
733 - Improved EGL integration on X11 (including better visual selection).
735 - Made Qt::WA_TranslucentBackground work in combination with native
738 - Support Qt::WA_TranslucentBackground on top-level QGLWidgets on X11, both
739 (EGL & glX). This allows OpenGL (& ES) rendering to semi-transparent widgets
740 if a compositing window manager is running.
742 - Support OpenGL texture_from_pixmap extension on X11 (EGL & glX) when
743 calling QPainter::drawPixmap() with the OpenGL paint engine, or calling
744 QGLContext::bindTexture() on an X11 QPixmap. If the
745 GLX_EXT_texture_from_pixmap or EGL_NOKIA_texture_from_pixmap extensions are
746 present, Qt will attempt to use glXBindTexImageEXT or eglBindTexImage to
747 bind the pixmap to a texture, rather than copying the pixel data.
749 - Add new experimental QX11GLPixmapData backend for QPixmap. This pixmap
750 backend uses regular X11 pixmaps to store the image data, however it uses
751 OpenGL to render into them.
753 - Tablet: Disable event compression of events of type QTabletEvent when the
754 current event is accepted by the receiver.
756 - [QTBUG-4242] Fixed a bug that allowed the user to close a window
757 event though the program is using the QEventLoop::ExcludeUserInputEvents
760 - [255559] Fixed generation of XdndLeave events to include the correct
763 - [258319] Avoid division by zero on some Xlib/Xserver implementations.
765 - Fixed the default QWidget size on X servers with Xinerama to give widgets
766 a default size that should fit on a single screen.
768 - Support _NET_WORKAREA on X servers with Xinerama (previously this property
774 - Significant external contribution from Milan Burda for planned removal
775 of (non-unicode) Windows 9x/ME support.
777 - QRegion is no longer a GDI object by default. This means it is no
778 longer subject to gui-thread only nor does it potentially impact
779 the 10.000 GDI object limit per process. By explicitly calling
780 .handle() a GDI object will be created and memory managed by
781 QRegion. The native handle is for reading out only. Any GDI calls
782 made on the HRGN handle will not affect the QRegion.
784 - The reading code of QLocalSocket on Windows has been rewritten to improve
787 - On Windows when a file cannot be accessed (stat()ed), we are now restoring
788 the error mode to the original value.
790 - [259221] QFileInfo::symLinkTarget() now supports NTFS symbolic links
791 thanks to Konstantin Ritt (merge request 1217).
792 - [251554] Fixed openUrl("mailto:") with Thunderbird on Windows.
793 - [254501] QDestopServices now supports cyrillic file names.
794 - Fixed an issue which prevents moving fixed size windows using titlebar.
795 - [258087] Fixed an issue on Vista which returns incorrect file paths when
796 using QFileDialog::getOpenFileNames()
797 - [253763] Fixed a focus issue when using out-of-process ActiveQt controls.
798 - [255912] Mouse move events will not be delivered to a blocked widget.
799 - [225588] Enabled IME reconversion support.
802 * Now much more reliable when reading a file through a QIODevice.
803 * If Video Mixing Renderer 9 is not available, falls back to software
805 * Fixed a flicker issue when switching source with a transition time of 0.
807 - [QTBUG-4445] Fixed bug on Windows that caused problems when printing
808 text where several characters were represented by a single glyph, e.g.
809 a double 't' with the Calibri font.
811 - Added QSysInfo::WV_WINDOWS7 and QSysInfo::WV_6_1.
813 - Changed QPrintDialog under Windows to use PrintDlgEx, instead of the old
814 deprecated PrintDlg call.
819 - General changes on Mac OS X:
820 * Mac OS X version support: Support for 10.3(Panther) has been dropped and
821 support for 10.6(Snow Leopard) has been added.
822 * The Cocoa port now supports static linking.
823 * The Cocoa port now supports the Qt3Support library (with the exception of
824 Q3FileDialog) to ease the transition from Carbon to Cocoa.
825 * The Cocoa binary packages are now Intel only (universal i386 and x86_64).
826 * Snow Leopard notes:
827 - Gcc 4.2 is used by default. Configure with -platform macx-g++40 to
829 - Using the 10.4u SDK requires gcc 4.0.
830 - Configuring for the Cocoa port (-cocoa) produces 64-bit binaries by
831 default. Use the -arch flags to override.
832 - Building for ppc64 is no longer supported by the gcc tool chain.
833 - Building for ppc is still supported.
834 * Added support for GetURL events on Mac OS X.
837 * [123740] Fixed an issue with dead keys on Mac (cocoa) on French keyboard
839 * [258438] Enabled Emacs style keyboard shortcuts.
840 * [QTBUG-4418] Fixed maximizing and restoring a window.
843 * [252088] Drag Leave events will be delivered correctly on Cocoa.
844 * [257661] Cocoa now uses the correct line ending for clipboard plain text.
845 * [258173] Fixed an issue which caused "whatsthis" pointer to flicker.
846 * Fixed some warnings that might get printed when reparenting QGLWidget.
847 * Fixed stacking order of modal dialogs so that they never rearrange level,
848 or hide in the background.
849 * Fixed problem with plugins written with Qt that closes down the native
850 application when hiding a modal dialog.
851 * Fixed problem that native applications cannot quit when using plugins
852 written with Qt from a native application.
853 * Fixed problem that the menubar is not restored correctly when using
854 plugins written with Qt from a native application.
855 * The event dispatcher now integrates better with native applications that
856 spin the event loop themselves.
857 * Using Qt::AA_MacPluginApplication will now disable the use of native
859 * Sliders and scroll views in Qt now use pixel scrolling for mouse devices
861 * Wheel events can now contain a delta with a value as low as 1 for mouse
862 devices that use pixel scrolling.
864 Qt for Embedded Linux
865 ---------------------
867 - Added QMAKE_LIBS_OPENGL_ES1, QMAKE_LIBS_OPENGL_ES1CL and
868 QMAKE_LIBS_OPENGL_ES2 qmake variables for specifying OpenGL ES
871 - Compilation fixes for OpenGL/ES 1.0 and OpenGL/ES 1.1 Common Lite.
874 * Now much more reliable when reading a file through a QIODevice.
875 * If Video Mixing Renderer 9 is not available, falls back to software
877 * Fixed a flicker issue when switching source with a transition time of 0
879 - [QTBUG-3620] Fixed bug on X11 that caused bitmap fonts to become so small
880 it was unreadable when printed or presented in a print preview widget.
882 - [QTBUG-4445] Fixed bug on Windows that caused problems when printing
883 text where several characters were represented by a single glyph, e.g.
884 a double 't' with the Calibri font.
887 * Protect the use of version-specific EGL symbols with #ifdef's.
888 * Make sure an EGL context is current when resolving GL extensions.
889 * Introduce "lazyDoneCurrent" for optimizing context switching in
891 * Separate EGLSurface from QEglContext so that the same context can
892 be used with multiple surfaces.
893 * Move common functions from system-specific files to qgl_egl.cpp.
894 * Fix a memory leak of EGLSurface's in QGLContext.
895 * Fix detection of pbuffers on OpenGL/ES systems.
896 * EGL_SAMPLES was being set to the wrong value for multisampled surfaces.
899 * Make the code better at detecting MBX vs SGX header files.
900 * Fix 32-bit screen support - some code was still assuming 16-bit.
901 * Stop GL window surfaces double-flushing their contents.
902 * Remove surface holder, which never worked all that well.
903 * Implement screen rotations.
905 - Mouse and keyboard drivers
906 * Removed obsolete drivers (vr41xx, yopy, sl5000, bus mouse).
907 * Added a new LinuxInput driver for both mouse and keyboard.
908 * Added keymap support for QWS via standard Linux .kmap files.
909 (complete with dead-keys, compose-key and LED handling).
911 - Remove obsolete OpenGL/ES screen drivers: hybrid, ahigl.
913 - Send enter/leave events also to child widgets.
915 - Fix crash when instantiating multiple QApplications.
917 - Optimize software cursor by using native image format instead of 8-bit.
919 - [255828] Avoid window decoration flicker on show.
921 - [255495] Fix blend function crash on AVR32.
923 - Fix qconfig configurations.
925 - Add powerpc mkspec and remove "empty" ppc mkspec .
930 - When running Qt/DirectFB the DirectFB window id of a top level QWidget can
931 be queried using property("_q_DirectFBWindowID")
933 - Allow setting the background color of the primary layer in DirectFB with
934 connect options. QWS_DISPLAY=directfb:bgcolor=red or
935 QWS_DISPLAY=directfb:bgcolor=\#aabbccdd
937 - Add support for rendering mouse cursor using a top level window when cursor
938 support is not working in IDirectFBDisplayLayer. Define
939 QT_DIRECTFB_WINDOW_AS_CURSOR to enable.
941 - Add experimental support for optimized locking/unlocking of surfaces. Enable
942 by defining QT_DIRECTFB_SUBSURFACE.
944 - Fix a bug to conceptually allow using QDirectFBScreen as a subscreen of a
945 proxy screen. Don't make QDirectFBScreen::instance() assume that
946 QScreen::instance() is a QDirectFBScreen.
948 - Optimize move/resize operations with DirectFB. With a properly configured
949 DirectFB these operations are handled for us and we don't need to force a
950 repaint of the window.
952 - Support top level window opacity in DirectFB
954 - Fix a bug when loading RGB32 images that would lead to rendering issues.
956 - Fix a bug when painting with invalid pens/brushes.
958 - Fix a bug that would show up when QWidget::scroll is called.
960 - Implement support for loading pixmaps using IDirectFBImageProvider.
962 - Disable color table support by default. This seems to work incorrectly on
963 most boards and loading these images will generally require an image
966 - Fix a crash when resizing windows.
968 - Compile with versions < 1.0. We still recommend using newer versions.
970 - Considerable code cleanup
972 - Various optimizations regarding painting, loading of images and creation of
975 - Allow forcibly falling back to raster engine for painting operations by
976 exporting QT_DIRECTFB_FORCE_RASTER=1
978 - Reenable support for RGB32 primary surface.
984 - On Windows CE the link time code generation has been disabled by default to
985 be consistent with win32-msvc200x.
986 - The default button size has been reduced in the Windows mobile style.
987 - [QTBUG-3613] QWizard issues have been fixed on Windows mobile.
988 - [254673] Restoring minimized widgets fixed for Windows mobile and
990 - [255242] Seeking within large files (bigger than 0x80000000 bytes) fixed
992 - [257352] When configuring Qt for Windows CE, configure points the user to
993 setcepaths, when its done.
994 - [259850] Added a makespec template for Windows CE 6.
995 - Fixed the hardcoded GL library names for Windows CE.
997 ****************************************************************************
999 ****************************************************************************
1002 * [233683] Promoted Widgets are now stored correctly in scratchpad.
1003 * [249823] Added search functionality to the resource browser.
1004 * [254282] Enabled the use of promoted widgets in form templates.
1005 * [254824] Made it possible to override the createAction()/createWidget()
1006 functions of QUiLoader.
1007 * [256332] Enabled deleting all pages of a QTabWidget or QStackedWidget.
1008 * [259238] Fixed menubar/menu editing in right-to-left mode.
1009 * [259918] Fixed setting of object names for container pages not to use
1011 * [260658] Fixed saving of alpha values set in the palette editor.
1012 * It is now possible to further specify the kind of custom widget string
1013 properties using XML tags.
1016 * [260784] Generated code for retranslateUi doesn't cause compiler warnings
1020 * [128859] Fixed code generation of QLabel's wordWrap property.
1023 * Changed qdoc3 binary to be in bin/ instead of a platform specific location.
1026 * Linguist GUI: Experimental support for editing multi-length strings.
1027 * lupdate is now again the only tool which can parse program code.
1029 - Actually guess the target language from the file name.
1030 - Make -{source,target}-language actually override values from files.
1032 * Properly support "using namespace", etc.
1033 * Remove the obsolete TRANSLATOR hack relating to "using namespace".
1034 * Support attaching meta data to translatable message.
1035 * Actually use the argument of Q_DECLARE_TR_FUNCTION.
1037 * Bug fixes and robustness improvements.
1039 - Add -markuntranslated <prefix> option.
1040 * Both lupdate & lrelease
1041 - Accuracy improvements of the qmake .pro file parser.
1042 - Support for ID-based translations. Somewhat experimental.
1044 - Add --sort-contexts option.
1045 - Add --locations option (complementing lupdate).
1046 - Add --no-ui-lines option (complementing lupdate).
1049 ****************************************************************************
1050 * Important Behavior Changes *
1051 ****************************************************************************
1053 - The experimental Direct3D paint engine has been removed. The reason for
1054 this is that Nokia focuses on OpenGL for desktop hardware accelerated
1057 - The default engine used to draw onto OpenGL buffers has changed in
1058 Qt 4.6. The QPaintEngine::OpenGL2 engine is now used as the default
1059 engine. This *may* cause compatibility problems for applications
1060 that use a mix of QPainter and native OpenGL calls to draw into a GL
1061 buffer. Use the QGL::setPreferredPaintEngine() function to enforce
1062 usage of the old GL paint engine.
1064 - When mixing OpenGL and QPainter calls you need to surround your
1065 custom OpenGL calls with QPainter::beginNativePainting() and
1066 QPainter::endNativePainting().
1067 This is to ensure that the paint engine flushes any pending drawing and sets
1068 up the GL modelview/projection matrices properly before you can issue custom
1069 OpenGL calls, and to let the paint engine synchronize to the painter state
1070 before resuming regular QPainter based drawing.
1072 - Graphics View has undergone heavy optimization work, and as a result of
1073 this work, the following behavior changes were introduced.
1075 a) QStyleOptionGraphicsItem::exposedRect now contains the item's bounding
1076 rectangle, and QStyleOptionGraphicsItem::matrix is uninitialized by
1077 default. You can enable an exact exposed rectangle and a correct matrix
1078 by enabling the flag QGraphicsItem::ItemUsesExtendedStyleOptions.
1080 b) QStyleOptionGraphicsItem::levelOfDetails is obsoleted and its value is
1081 always initialized to 1. Instead you can call
1082 QStyleOptionGraphicsItem::levelOfDetailFromTransform(const QTransform &)
1083 to determine the level of detail.
1085 c) QGraphicsView no longer calls QGraphicsView::drawItems(), and in turn
1086 QGraphicsScene::drawItems(), by default. You can get the old behavior
1087 back by enabling QGraphicsView::IndirectPainting.
1089 d) QGraphicsItem no longer calls itemChange() for position and
1090 transformation changes. If you want to receive notifications for changes
1091 to the item's position and transformation, you can set the flag
1092 QGraphicsItem::ItemSendsGeometryChanges (which is enabled by default by
1093 QGraphicsWidget and QGraphicsProxyWidget).
1095 - QDesktopWidget on X11 no longer emits the resized(int) signal when screens
1096 are added or removed. This was not done on other platforms. Use the
1097 screenCountChanged signal instead.
1099 - QUrl's parser is more strict when for hostnames in URLs. QUrl now
1100 enforces STD 3 rules:
1102 * each individual hostname section (between dots) must be at most
1103 63 ASCII characters in length;
1105 * only letters, digits, and the hyphen character are allowed in the
1106 ASCII range; letters outside the ASCII range follow the normal
1109 That means QUrl no longer accepts some URLs that were invalid
1110 before, but weren't interpreted as such.
1112 - The Unix configure-time check for STL is stricter now in Qt
1113 4.6. This means some legacy STL implementations may fail to pass
1114 the test and, therefore, Qt will automatically disable STL support.
1116 This is a binary-compatible change: existing code will continue to
1117 work without being recompiled. However, it affects the source code,
1118 since some STL-compatibility API will not be enabled.
1120 Platforms affected by this change:
1121 * solaris-cc-* with the default (Cstd) C++ STL library
1122 recommendation: use -library=stlport4
1123 See Sun Studio's documentation for the effects of this option
1125 - QVariant has now a new implicit constructor that takes a float. This
1126 means that code that assigned a float to a variant would create a
1127 variant with userType QMetaType::Float, instead of QVariant::Double.
1129 - QDataStream will now read and write all floating point numbers with the
1130 same precision, regardless of whether it's streamed into or out from a
1131 float or double. This is to maintain compatibility across platforms with
1132 a different default precision for qreal. The default is 64-bit precision
1133 for all floating point numbers, and this can be changed using the new
1134 function setFloatingPointPrecision(). Set Qt_4_5 as the version of the
1135 QDataStream to get the behavior of previous versions.
1137 - On Mac OS X, QDesktopServices::storageLocation(DataLocation) now includes
1138 QCoreApplication::organizationName() and QCoreApplication::applicationName()
1139 if those are set. This matches the behavior on the other platforms.
1141 - The Animation Framework
1142 * currentTime() now returns the complete current time including previous
1144 * currentLoopTime() returns the time inside the current loop.
1145 * stateChanged signal sends the new state as first parameter and old state
1147 * QAnimationGroup::clearAnimations() has been renamed to clear().
1148 * QAnimationGroup::insertAnimationAt() has been renamed to
1150 * QAnimationGroup::takeAnimationAt() has been renamed to takeAnimation().
1151 * QSequentialAnimationGroup::insertPauseAt() has been renamed to
1153 * [QT-941] Avoids timer ticks when there are only pause animations running.
1155 - Refactoring in OpenGL examples to improve portability and utilize the
1156 Animation framework for animation. The hellogl and overpainting examples
1157 now compile on OpenGL/ES 1.1. Also common code is factored.
1159 - Changed QWebFrame::setHtml() and setContent() to not affect the back/forward
1160 and the session history.
1162 - qmake no longer adds Qt internal dependencies to the linker when Qt
1163 is built in shared mode (not static). This means that applications
1164 that made use of platform-specific API may need to adjust the LIBS
1165 variable in their .pro files to match:
1168 Mac: LIBS += -framework AppKit -framework Carbon
1170 - QtScript: Behavior changes due to using JavaScriptCore in the back-end:
1171 * QDateTime is no longer used for date parsing and string conversion of
1172 Date objects; instead the (more compliant) date processing from
1173 JavaScriptCore is used.
1174 * RegExp objects are no longer thin wrappers around QRegExp; they are now
1175 "proper" JavaScript RegExp objects.
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