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 The build-key is obsolete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 * Q_DECLARE_METATYPE(Foo*) now requires that Foo is fully defined. In
128 cases where a forward declared type should be used as a metatype,
129 Q_DECLARE_OPAQUE_POINTER(Foo*) can be used to allow that.
133 * The signature of the createEditor and valuePropertyName methods
134 have been changed to take arguments of type int instead of QVariant::Type.
136 - QWindowSystemInterface:
138 * The signature of all handleTouchEvent() variants have changed,
139 taking a QTouchDevice* instead of just a DeviceType value.
140 Platform or generic plug-ins have to create and register at least
141 one QTouchDevice before sending the first touch event.
143 * The event type parameter is removed from handleTouchEvent().
145 - The previously exported function qt_translateRawTouchEvent() has been removed.
146 Use QWindowSystemInterface::handleTouchEvent() instead.
148 - QAbstractEventDispatcher
150 * The signature for the pure-virtual registerTimer() has changed. Subclasses
151 of QAbstractEventDispatcher will need to be updated to reimplement the new
152 pure-virtual 'virtual void registerTimer(int timerId, int interval,
153 Qt::TimerType timerType, QObject *object) = 0;'
155 * QAbstractEventDispatcher::TimerInfo is no longer a QPair<int, int>. It is
156 now a struct with 3 members: struct TimerInfo { int timerId; int interval;
157 Qt::TimerType timerType; }; Reimplementations of
158 QAbstractEventDispatcher::registeredTimers() will need to be updated to pass
159 3 arguments to the TimerInfo constructor (instead of 2).
163 * Removed implicit conversion operator QUuid::operator QString(), instead
164 QUuid::toString() function should be used.
166 - The QHttp, QHttpHeader, QHttpResponseHeader and QHttpRequestHeader classes have
167 been removed, QNetworkAccessManager should be used instead.
169 - The QFtp class is no longer exported, QNetworkAccessManager should be used
174 * On Windows, QProcess::ForwardedChannels will not forward the output of GUI
175 applications anymore, if they do not create a console.
177 - QAbstractSocket's connectToHost() and disconnectFromHost() are now virtual and
178 connectToHostImplementation() and disconnectFromHostImplementation() don't exist.
180 - QTcpServer::incomingConnection() now takes a qintptr instead of an int.
182 - QNetworkConfiguration::bearerName() removed, and bearerTypeName() should be used.
184 - QDir::convertSeparators() (deprecated since Qt 4.2) has been removed. Use
185 QDir::toNativeSeparators() instead.
187 - QIconEngineV2 was merged into QIconEngine
188 You might need to adjust your code if it used a QIconEngine.
191 * several functions and built-in variables were modified to return normalized paths.
193 - QTextCodecPlugin has been removed since it is no longer used. All text codecs
194 are now built into QtCore.
196 - QDir::NoDotAndDotDot is QDir::NoDot|QDir::NoDotDot therefore there is no need
197 to use or check both.
200 * toShort(), toUShort(), toInt(), toUInt(), toLongLong() and toULongLong() no
201 longer take a parameter for base, they will only perform localised base 10
202 conversions. For converting other bases use the QString methods instead.
204 - QSystemLocale has been removed from the public API.
206 ****************************************************************************
208 ****************************************************************************
213 - The directory structure of the qtbase unit-tests has been reworked to
214 more closely match the directory structure of the code under test.
215 Integration tests have been moved to tests/auto/integrationtests.
217 Third party components
218 ----------------------
223 ****************************************************************************
225 ****************************************************************************
229 * drop a bogus QChar::NoCategory enum value; the proper QChar::Other_NotAssigned
230 value is returned for an unassigned codepoints now.
232 * layoutAboutToBeChanged is no longer emitted by QAbstractItemModel::beginMoveRows.
233 layoutChanged is no longer emitted by QAbstractItemModel::endMoveRows. Proxy models
234 should now also connect to (and disconnect from) the rowsAboutToBeMoved and
237 * The default value of the property QSortFilterProxyModel::dynamicSortFilter was
238 changed from false to true.
240 * The signature of the virtual QAbstractItemView::dataChanged method has changed to
241 include the roles which have changed. The signature is consistent with the dataChanged
244 * QFileSystemWatcher is now able to return failure in case of errors whilst
245 altering the watchlist in both the singular and QStringList overloads of
246 addPath and removePath.
248 * QString::mid, QString::midRef and QByteArray::mid, if the position passed
249 is equal to the length (that is, right after the last character/byte),
250 now return an empty QString, QStringRef or QByteArray respectively.
251 in Qt 4 they returned a null QString or a null QStringRef.
253 * QString methods toLongLong(), toULongLong(), toLong(), toULong(), toInt(),
254 toUInt(), toShort(), toUShort(), toDouble(), and toFloat() no longer use the
255 default or system locale, they will always use the C locale. This is to
256 guarantee consistent default conversion of strings. For locale-aware conversions
257 use the equivalent QLocale methods.
259 * QDate, QTime, and QDateTime have undergone important behavioural changes:
260 * QDate only implements the Gregorian calendar, the switch to the Julian
261 calendar before 1582 has been removed. This means all QDate methods will
262 return different results for dates prior to 15 October 1582, and there is
263 no longer a gap between 4 October 1582 and 15 October 1582.
264 * QDate::setYMD() is deprecated, use QDate::setDate() instead
265 * Most methods now apply strict validity checks and will return appropriate
266 and consistent values when invalid. For example, QDate::year() will return
267 0 and QDate::shortMonthName() will return QString().
268 * Adding days to a null QDate or seconds to a null QTime will no longer return
270 * QDate stores the Julian Day as a qint64 extending date support across a
271 more interesting range, see the class documentation for details.
272 * Conversion to YMD form dates is only accurate between to 4800 BCE to
274 * The QDate::addDays() and QDateTime::addDays() methods now take a qint64
275 * The QDate::daysTo() and QDateTime::daysTo() methods now return a qint64
278 * QIntValidator and QDoubleValidator no longer fall back to using the C locale if
279 the requested locale fails to validate the input.
283 * Accessibility has been refactored. The hierachy of accessible objects is implemented via
284 proper parent/child functions instead of using navigate which has been deprecated for this purpose.
285 Table and cell interfaces have been added to qaccessible2.h
287 * Touch events and points have been extended to hold additional
288 information like capability flags, point-specific flags, velocity,
293 * QInputContext removed as well as related getters and setters on QWidget and QApplication.
294 Input contexts are now platform specific.
296 * QInputDialog::getInteger() has been obsoleted. Use QInputDialog::getInt() instead.
298 * In Qt 4, many QStyleOption subclasses were introduced in order to keep
299 binary compatibility -- QStyleOption was designed to be extended this way,
300 in fact it embeds a version number. In Qt 5 the various QStyleOption*V{2,3,4}
301 classes have been removed, and their members merged into the respective
302 base classes. Those classes were left as typedefs to keep existing code
303 working. Still, some minor adjustements could be necessary, especially in code
304 that uses QStyleOption directly and does not initialize all the members using
305 the proper Qt API: due to the version bump, QStyle will try to use the additional
306 QStyleOption members, which are left default-initialized.
310 * QHostAddress::isLoopback() API added. Returns true if the address is
311 one of the IP loopback addresses.
313 * QSslCertificate::serialNumber() now always returns the serial number in
316 * The openssl network backend now reads the ssl configuration file allowing
317 the use of openssl engines.
329 * [QTBUG-20615] Autotests can now log test output to multiple destinations
330 and log formats simultaneously.
334 QSqlTableModel/QSqlRelationalTableModel
336 * The dataChanged() signal is now emitted for changes made to an inserted
337 record that has not yet been committed. Previously, dataChanged() was
338 suppressed in this case for OnRowChange and OnFieldChange. This was probably
339 an attempt to avoid trouble if setData() was called while handling
340 primeInsert(). By emitting dataChanged(), we ensure that all views are aware
343 * While handling primeInsert() signal, the record must be manipulated using
344 the provided reference. Do not attempt to manipulate the records using the
345 model methods setData() or setRecord().
347 * removeRows() no longer emits extra beforeDelete signal for out of range row.
349 * removeRows() now requires the whole range of targetted rows to be valid
350 before doing anything. Previously, it would remove what it could and
351 ignore the rest of the range.
353 * setRecord() and insertRecord()
354 -Only use fields where generated flag is set to true. This is
355 is consistent with the meaning of the flag.
356 -Require all fields to map correctly. Previously fields that didn't
357 map were simply ignored.
359 ****************************************************************************
361 ****************************************************************************
364 ****************************************************************************
365 * Platform Specific Changes *
366 ****************************************************************************
374 * Accessibility framework uses IAccessible2
381 Qt for Embedded Linux
382 ---------------------
389 ****************************************************************************
390 * Compiler Specific Changes *
391 ****************************************************************************
394 ****************************************************************************
396 ****************************************************************************
400 * Remove qttest_p4.prf file. From now on we should explicitly enable the
401 things from it which we want. Autotest .pro files should stop using
402 'load(qttest_p4)' and start using 'CONFIG+=testcase' instead.
407 * [QTBUG-8926] [QTBUG-20440] Properties of type QStringList now have
408 translation attributes which apply to all items.
409 They are by default translatable.
418 * [QTBUG-20785] The moc now has a -b<file> option to #include an additional
419 file at the beginning of the generated file.
430 * QMAKE_MOC_OPTIONS variable is now available for passing additional parameters
440 ****************************************************************************
442 ****************************************************************************
443 - The text codecs that were previously plugins are now built into QtCore.
445 ****************************************************************************
446 * Important Behavior Changes *
447 ****************************************************************************
451 * QPointer itself is now deprecated, and the implementation of QPointer
452 has been changed to use QWeakPointer. The old guard mechanism has been
453 removed. This causes two slight changes in behavior when using
456 * When using QPointer on a QWidget (or a subclass of QWidget), previously
457 the QPointer would be cleared by the QWidget destructor. Now, the QPointer
458 is cleared by the QObject destructor (since this is when QWeakPointers are
459 cleared). Any QPointers tracking a widget will NOT be cleared before the
460 QWidget destructor destroys the children for the widget being tracked.
462 * When constructing a QSharedPointer to take ownership of an object after a
463 QPointer is already tracking the object. Previously, the shared pointer
464 construction would not be affected by the QPointer, but now that QPointer
465 is implemented using QWeakPoiner, constructing the QSharedPointer will
471 * Definition of QVariant::UserType changed. Currently it is the same as
472 QMetaType::User, which means that it points to the first registered custom
473 type, instead of a nonexistent type.
478 * The static function QMessageBox::question has changed the default argument
479 for buttons. Before the default was to have an Ok button. That is changed
480 to having a yes and a no button.