1 Qt 4.8 introduces many new features and improvements as well as bugfixes
2 over the 4.7.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/4.8
7 The Qt version 4.8 series is binary compatible with the 4.7.x series.
8 Applications compiled for 4.7 will continue to run with 4.8.
10 Some of the changes listed in this file include issue tracking numbers
11 corresponding to tasks in the Qt Bug Tracker:
13 http://bugreports.qt.nokia.com/
15 Each of these identifiers can be entered in the bug tracker to obtain more
16 information about a particular change.
18 ****************************************************************************
20 ****************************************************************************
27 Third party components
28 ----------------------
30 - Updated libpng to version x.y.z
33 ****************************************************************************
35 ****************************************************************************
39 - Removed support for QT_NO_THREAD define for QHostInfo.
40 - Optimized plugin loading on ELF platforms.
41 Print failure reason at runtime with QT_DEBUG_PLUGINS=1 in environment.
42 - QMutexLocker: improved performence of the non contended case by inlining some function
43 - QThreadStorage: Added possibility to store object by value instead of by pointer [QTBUG-15033]
44 - QThread: fixed few race conditions [QTBUG-17257, QTBUG-15030]
45 - QtConcurrent: added support for c++0x lambda in few functions
46 - QObject: Improved performence of the signal activation
47 - QObject: added ways to connect signals using QMetaMethod
48 - QObject: deprecated qFindChild and qFindChildren
49 - QObject: optimize constructions and destruction of objects
50 - QObject: Qt::BlockingQueuedConnection can handle the return value [QTBUG-10440]
51 - QList/QVector/QStringList: added C++0x initilizer lists constructors.
52 - QVarLenghtArray: added method for consistency with QVector
53 - QStringBuilder: added support for QByteArray
54 - qSwap now uses std::swap, specialized std::swap for our container to work better with stl algoritms
55 - QVariant: deprecated global function qVariantSetValue, qVariantValue, qVariantCanConvert, qVariantFromValue
56 - QUrl: add method for retrieving effective top level domain [QTBUG-13601] (MR-1205)
61 - QTabBar: reduced minimumSizeHint if ElideMode is set.
62 - QComboBox: Fixed a color propagation issue with the lineedit. [QTBUG-5950]
63 - Deprecate qGenericMatrixFromMatrix4x4 and qGenericMatrixToMatrix4x4
64 - QListView diverses optimisations [QTBUG-11438]
65 - QTreeWidget/QListWidget: use localeAwareCompare for string comparisons [QTBUG-10839]
66 - PNG image I/O: Much improved support for text annotations, including iTXt fields.
67 - QRawFont and QGlyphRun are introduced for low-level text rendering. [QTBUG-18252]
68 - QFont: hintingPreference() is introduced to control hinting in font rendering and
69 subpixel positioning of glyphs for Windows, Mac OS X and X11/raster. [QTBUG-10615]
70 - Subpixel positioned text layout is supported in raster and OpenGL paint engines.
71 - QFont: styleName() is added to allow selecting fonts with irregular style names
72 like UltraLight. [QTBUG-19366]
73 - Visual text cursor movement behavior is added to QTextEdit and QLineEdit controls,
74 which can be used as an optional mode for bi-directional text editing. [QTBUG-13859]
75 - Accessibility: Fix potential crash in QDockWidget.
76 - Accessibility: Fix crash when asking for relations of child accessibles.
77 - Accessibility: More consistency in reporting names (especially when widget is invisible).
78 - Accessibility: Make focus handling more consistent.
79 - Accessibility: Send updates when text changes.
80 - Accessibility: Add IAccessible2 events.
81 - Accessibility: Fix crash when accessing ItemViews during initialization.
82 - Accessibility: Make QTabWidget child hierarchy consistent.
83 - Accessibility: Report correct window title and application name.
84 - Accessibility: Return text attributes for QTextEdit.
90 - SSL: Switch default version to TLS 1.0
91 - SSL: enable Server Name Indication (SNI) by default
92 - QSslCertificate: report fraudulent certificates as invalid ("Comodogate") [QTBUG-18338]
93 - QSslCertificate: display non-ASCII names from subject and issuerInfo (MR-922)
94 - QSslCertificate: loat root certificates on demand on Unix (excluding Mac) [QTBUG-14016]
95 - QNetworkCookie: retain quotes in value attribute [QTBUG-17746]
96 - QNetworkCookie: allow spaces in unquoted values [QTBUG-18876]
97 - HTTP API: add support for HTTP multipart messages [QTBUG-6222]
98 - HTTP cache: do not load resources from cache that must be revalidated [QTBUG-18983]
99 - HTTP cache: change file organization (MR-2505)
104 - Removed dependency of OpenGL Utility Library (GLU)
105 - Added QGLFunctions, which provides cross-platform access to the
107 - Including <QtOpenGL> will not work in combination with GLEW, as
108 QGLFunctions will undefine GLEW's defines.
112 - Deprecated qScriptValueFromQMetaObject, qScriptValueToValue, qScriptValueFromValue
117 - Update sqlite to 3.7.7.1
118 ****************************************************************************
120 ****************************************************************************
123 ****************************************************************************
124 * Platform Specific Changes *
125 ****************************************************************************
129 - Now takes font hinting settings from GConf by default if running in
131 - Various fixes to FontConfig font matching code to make it consistent
132 with other X11 programs. [QTBUG-2148, QTBUG-19947, QTBUG-14269]
136 - DirectWrite experimental text shaping engine is added with subpixel
137 positioning support. [QTBUG-12678]
141 - raster graphics system is now made as the default paint engine for
142 Mac OS X. [QTBUG-12615]
143 - HarfBuzz can now be used as an optional text layout engine on Mac OS X.
146 Qt for Embedded Linux
147 ---------------------
154 ****************************************************************************
155 * Compiler Specific Changes *
156 ****************************************************************************
159 ****************************************************************************
161 ****************************************************************************
168 * [QTBUG-18631] Enabled the use of promoted QWidgets in the buddy editor.
169 * [QTBUG-18120] Fixed saving of the Z-order.
170 * [QTBUG-13683] Fixed saving of QGridLayout and QFormLayout
172 * [QTBUG-10890] Added a filter to the rich text editor dialog.
173 that simplifies the HTML markup generated.
174 * [QTBUG-7777] Added support for QIcon::fromTheme.
175 * [QTBUG-7169] Fixed QtUiTools to be built with the correct
177 * [QTBUG-3120] Added support for alignment of box layout items.
206 * removed Qt3support dependency
212 ****************************************************************************
214 ****************************************************************************
217 ****************************************************************************
218 * Important Behavior Changes *
219 ****************************************************************************