1 Some of the changes listed in this file include issue tracking numbers
2 corresponding to tasks in the Qt Bug Tracker:
4 http://bugreports.qt.nokia.com/
6 Each of these identifiers can be entered in the bug tracker to obtain more
7 information about a particular change.
10 ****************************************************************************
11 * Source incompatible changes *
12 ****************************************************************************
15 - QSslCertificate::subjectInfo() and QSslCertificate::issuerInfo() now
16 return a QStringList instead of a QString
18 - QSslCertificate::isValid() has been deprecated. Originally it only checked
19 the certificate dates, but later checking for blacklisting was added. Now
20 there's a more specific QSslCertificate::isBlacklisted() method.
22 - Unite clipping support has been removed from QPainter. The alternative is
23 to unite QRegion's and using the result on QPainter.
25 - QLibrary::resolve() now returns a function pointer instead of a void
28 - QSslCertificate::alternateSubjectNames() is deprecated (but can be enabled
29 via QT_DISABLE_DEPRECATED_BEFORE), use
30 QSslCertificate::subjectAlternativeNames() instead.
32 - QLibraryInfo::buildKey() has been removed. Likewise, the QT_BUILD_KEY
33 preprocessor #define has also been removed. The build-key is obsolete
34 and is no longer necessary.
36 - QCoreApplication::translate() will no longer return the source text when
37 the translation is empty. Use lrelease -removeidentical for optimization.
39 - Qt::escape() is deprecated (but can be enabled via
40 QT_DISABLE_DEPRECATED_BEFORE), use QString::toHtmlEscaped() instead.
42 - QBool is gone. QString::contains, QByteArray::contains, and QList::contains
43 used to return an internal QBool class so that the Qt3 code
44 "if (a.contains() == 2)" wouldn't compile anymore. Such code cannot exist
45 in Qt4, so these methods return a bool now. If your code used the undocumented
46 QBool, simply replace it with bool.
49 * QMetaType::construct() has been renamed to QMetaType::create().
50 * QMetaType::unregisterType() has been removed.
53 * The QTRY_VERIFY and QTRY_COMPARE macros have been moved into QTestLib.
54 These macros formerly lived in tests/shared/util.h but are now provided
55 by including the <QtTest/QtTest> header. In addition,
56 QTRY_VERIFY_WITH_TIMEOUT and QTRY_COMPARE_WITH_TIMEOUT are provided,
57 allowing for specifying custom timeout values.
58 * The QTEST_NOOP_MAIN macro has been removed from the API. If a test is
59 known at compile-time to be inapplicable for a particular build it should
60 be omitted via .pro file logic, or the test should call QSKIP in the
61 initTestCase() method to skip the entire test and report a meaningful
62 explanation in the test log.
63 * The DEPENDS_ON macro has been removed from the API. This macro did nothing
64 and misled some users to believe that they could make test functions depend
65 on each other or impose an execution order on test functions.
66 * The QTest::qt_snprintf function has been removed from the API. This was an
67 internal testlib function that was exposed in the public API due to its use
68 in a public macro. Any calls to this function should be replaced by a call
69 to qsnprintf(), which comes from the <QtCore/QByteArray> header.
70 * The QTest::pixmapsAreEqual() function has been removed from the API.
71 Comparison of QPixmap objects should be done using QCOMPARE, which provides
72 more informative output in the event of a failure.
73 * The QSKIP macro no longer has the "mode" parameter, which caused problems
74 for calculating test metrics, as the SkipAll mode hid information about
75 what test data was skipped. Calling QSKIP in a test function now behaves
76 like SkipSingle -- skipping a non-data-driven test function or skipping
77 only the current data row of a data-driven test function. Every skipped
78 data row is now reported in the test log.
80 - The QSsl::TlsV1 enum value was renamed to QSsl::TlsV1_0 .
83 * Internal QAccessible::State enum value HasInvokeExtension removed
84 - QAccessibleInterface:
85 * The "child" integer parameters have been removed. This moves the api
86 to be closer to IAccessible2.
87 This means several functions lose their integer parameter:
88 text(Text t, int child) -> text(Text t), rect(int child) -> rect()
89 setText(Text t, int child, const QString &text) -> setText(Text t, const QString &text)
90 role(int child) -> role(), state(int child) -> state()
91 relationTo(int child, const QAccessibleInterface *other, int otherChild) ->
92 relationTo(const QAccessibleInterface *other)
93 * Accessible-Action related functions have been removed. QAccessibleInterface
94 subclasses are expected to implement the QAccessibleActionInterface instead.
95 These functions have been removed:
96 QAccessibleInterface::userActionCount, QAccessibleInterface::actionText,
97 QAccessibleInterface::doAction
98 - QAccessibleEvent also loses the child parameter.
99 QAccessibleEvent(Type type, int child) -> QAccessibleEvent(Type type)
100 QAccessibleEvent::child() removed.
101 - QAccessibleActionInterface:
102 * Refactored to be based on action names. All functions have been changed from using
103 int parameters to strings.
105 - QSound has been moved from QtGui to QtMultimedia
107 - QTabletEvent::QTabletEvent does not take a hiResGlobalPos argument anymore,
108 as all coordinates are floating point based now.
112 * The DeviceType enum and deviceType() have been deprecated due to
113 the introduction of QTouchDevice.
115 * The signature of the constructor has changed. It now takes a
116 QTouchDevice pointer instead of just a DeviceType value.
118 * TouchPointState no longer includes TouchPointStateMask and
119 TouchPointPrimary. QTouchEvent::TouchPoint::isPrimary() has
122 * QWidget *widget() has been removed and is replaced by QObject
123 *target() in order to avoid QWidget dependencies.
127 * It is no longer possible to use Q_DECLARE_METATYPE(Foo*) where Foo is only
128 forward declared - it must be fully defined.
132 * The signature of the createEditor and valuePropertyName methods
133 have been changed to take arguments of type int instead of QVariant::Type.
135 - QWindowSystemInterface:
137 * The signature of all handleTouchEvent() variants have changed,
138 taking a QTouchDevice* instead of just a DeviceType value.
139 Platform or generic plug-ins have to create and register at least
140 one QTouchDevice before sending the first touch event.
142 * The event type parameter is removed from handleTouchEvent().
144 - The previously exported function qt_translateRawTouchEvent() has been removed.
145 Use QWindowSystemInterface::handleTouchEvent() instead.
147 - QAbstractEventDispatcher
149 * The signature for the pure-virtual registerTimer() has changed. Subclasses
150 of QAbstractEventDispatcher will need to be updated to reimplement the new
151 pure-virtual 'virtual void registerTimer(int timerId, int interval,
152 Qt::TimerType timerType, QObject *object) = 0;'
154 * QAbstractEventDispatcher::TimerInfo is no longer a QPair<int, int>. It is
155 now a struct with 3 members: struct TimerInfo { int timerId; int interval;
156 Qt::TimerType timerType; }; Reimplementations of
157 QAbstractEventDispatcher::registeredTimers() will need to be updated to pass
158 3 arguments to the TimerInfo constructor (instead of 2).
162 * Removed implicit conversion operator QUuid::operator QString(), instead
163 QUuid::toString() function should be used.
165 - The QHttp, QHttpHeader, QHttpResponseHeader and QHttpRequestHeader classes have
166 been removed, QNetworkAccessManager should be used instead.
168 - The QFtp class is no longer exported, QNetworkAccessManager should be used
173 * On Windows, QProcess::ForwardedChannels will not forward the output of GUI
174 applications anymore, if they do not create a console.
176 - QAbstractSocket's connectToHost() and disconnectFromHost() are now virtual and
177 connectToHostImplementation() and disconnectFromHostImplementation() don't exist.
179 - QTcpServer::incomingConnection() now takes a qintptr instead of an int.
181 - QNetworkConfiguration::bearerName() removed, and bearerTypeName() should be used.
183 - QDir::convertSeparators() (deprecated since Qt 4.2) has been removed. Use
184 QDir::toNativeSeparators() instead.
186 - QIconEngineV2 was merged into QIconEngine
187 You might need to adjust your code if it used a QIconEngine.
190 * several functions and built-in variables were modified to return normalized paths.
192 - QTextCodecPlugin has been removed since it is no longer used. All text codecs
193 are now built into QtCore.
195 - QDir::NoDotAndDotDot is QDir::NoDot|QDir::NoDotDot therefore there is no need
196 to use or check both.
199 * toShort(), toUShort(), toInt(), toUInt(), toLongLong() and toULongLong() no
200 longer take a parameter for base, they will only perform localised base 10
201 conversions. For converting other bases use the QString methods instead.
203 - QSystemLocale has been removed from the public API.
205 ****************************************************************************
207 ****************************************************************************
212 - The directory structure of the qtbase unit-tests has been reworked to
213 more closely match the directory structure of the code under test.
214 Integration tests have been moved to tests/auto/integrationtests.
216 Third party components
217 ----------------------
222 ****************************************************************************
224 ****************************************************************************
228 * drop a bogus QChar::NoCategory enum value; the proper QChar::Other_NotAssigned
229 value is returned for an unassigned codepoints now.
231 * layoutAboutToBeChanged is no longer emitted by QAbstractItemModel::beginMoveRows.
232 layoutChanged is no longer emitted by QAbstractItemModel::endMoveRows. Proxy models
233 should now also connect to (and disconnect from) the rowsAboutToBeMoved and
236 * The default value of the property QSortFilterProxyModel::dynamicSortFilter was
237 changed from false to true.
239 * The signature of the virtual QAbstractItemView::dataChanged method has changed to
240 include the roles which have changed. The signature is consistent with the dataChanged
243 * QFileSystemWatcher is now able to return failure in case of errors whilst
244 altering the watchlist in both the singular and QStringList overloads of
245 addPath and removePath.
247 * QString::mid, QString::midRef and QByteArray::mid, if the position passed
248 is equal to the length (that is, right after the last character/byte),
249 now return an empty QString, QStringRef or QByteArray respectively.
250 in Qt 4 they returned a null QString or a null QStringRef.
252 * QString methods toLongLong(), toULongLong(), toLong(), toULong(), toInt(),
253 toUInt(), toShort(), toUShort(), toDouble(), and toFloat() no longer use the
254 default or system locale, they will always use the C locale. This is to
255 guarantee consistent default conversion of strings. For locale-aware conversions
256 use the equivalent QLocale methods.
258 * QDate, QTime, and QDateTime have undergone important behavioural changes:
259 * QDate only implements the Gregorian calendar, the switch to the Julian
260 calendar before 1582 has been removed. This means all QDate methods will
261 return different results for dates prior to 15 October 1582, and there is
262 no longer a gap between 4 October 1582 and 15 October 1582.
263 * QDate::setYMD() is deprecated, use QDate::setDate() instead
264 * Most methods now apply strict validity checks and will return appropriate
265 and consistent values when invalid. For example, QDate::year() will return
266 0 and QDate::shortMonthName() will return QString().
267 * Adding days to a null QDate or seconds to a null QTime will no longer return
269 * QDate stores the Julian Day as a qint64 extending date support across a
270 more interesting range, see the class documentation for details.
271 * Conversion to YMD form dates is only accurate between to 4800 BCE to
273 * The QDate::addDays() and QDateTime::addDays() methods now take a qint64
274 * The QDate::daysTo() and QDateTime::daysTo() methods now return a qint64
277 * QIntValidator and QDoubleValidator no longer fall back to using the C locale if
278 the requested locale fails to validate the input.
282 * Accessibility has been refactored. The hierachy of accessible objects is implemented via
283 proper parent/child functions instead of using navigate which has been deprecated for this purpose.
284 Table and cell interfaces have been added to qaccessible2.h
286 * Touch events and points have been extended to hold additional
287 information like capability flags, point-specific flags, velocity,
292 * QInputContext removed as well as related getters and setters on QWidget and QApplication.
293 Input contexts are now platform specific.
295 * QInputDialog::getInteger() has been obsoleted. Use QInputDialog::getInt() instead.
297 * In Qt 4, many QStyleOption subclasses were introduced in order to keep
298 binary compatibility -- QStyleOption was designed to be extended this way,
299 in fact it embeds a version number. In Qt 5 the various QStyleOption*V{2,3,4}
300 classes have been removed, and their members merged into the respective
301 base classes. Those classes were left as typedefs to keep existing code
302 working. Still, some minor adjustements could be necessary, especially in code
303 that uses QStyleOption directly and does not initialize all the members using
304 the proper Qt API: due to the version bump, QStyle will try to use the additional
305 QStyleOption members, which are left default-initialized.
309 * QHostAddress::isLoopback() API added. Returns true if the address is
310 one of the IP loopback addresses.
312 * QSslCertificate::serialNumber() now always returns the serial number in
315 * The openssl network backend now reads the ssl configuration file allowing
316 the use of openssl engines.
328 * [QTBUG-20615] Autotests can now log test output to multiple destinations
329 and log formats simultaneously.
332 ****************************************************************************
334 ****************************************************************************
337 ****************************************************************************
338 * Platform Specific Changes *
339 ****************************************************************************
347 * Accessibility framework uses IAccessible2
354 Qt for Embedded Linux
355 ---------------------
362 ****************************************************************************
363 * Compiler Specific Changes *
364 ****************************************************************************
367 ****************************************************************************
369 ****************************************************************************
373 * Remove qttest_p4.prf file. From now on we should explicitly enable the
374 things from it which we want. Autotest .pro files should stop using
375 'load(qttest_p4)' and start using 'CONFIG+=testcase' instead.
380 * [QTBUG-8926] [QTBUG-20440] Properties of type QStringList now have
381 translation attributes which apply to all items.
382 They are by default translatable.
391 * [QTBUG-20785] The moc now has a -b<file> option to #include an additional
392 file at the beginning of the generated file.
403 * QMAKE_MOC_OPTIONS variable is now available for passing additional parameters
413 ****************************************************************************
415 ****************************************************************************
416 - The text codecs that were previously plugins are now built into QtCore.
418 ****************************************************************************
419 * Important Behavior Changes *
420 ****************************************************************************
424 * QPointer itself is now deprecated, and the implementation of QPointer
425 has been changed to use QWeakPointer. The old guard mechanism has been
426 removed. This causes two slight changes in behavior when using
429 * When using QPointer on a QWidget (or a subclass of QWidget), previously
430 the QPointer would be cleared by the QWidget destructor. Now, the QPointer
431 is cleared by the QObject destructor (since this is when QWeakPointers are
432 cleared). Any QPointers tracking a widget will NOT be cleared before the
433 QWidget destructor destroys the children for the widget being tracked.
435 * When constructing a QSharedPointer to take ownership of an object after a
436 QPointer is already tracking the object. Previously, the shared pointer
437 construction would not be affected by the QPointer, but now that QPointer
438 is implemented using QWeakPoiner, constructing the QSharedPointer will
444 * Definition of QVariant::UserType changed. Currently it is the same as
445 QMetaType::User, which means that it points to the first registered custom
446 type, instead of a nonexistent type.
451 * The static function QMessageBox::question has changed the default argument
452 for buttons. Before the default was to have an Ok button. That is changed
453 to having a yes and a no button.