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 The build-key is obsolete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.
48 - QMetaType::construct() has been renamed to QMetaType::create().
51 * The QTRY_VERIFY and QTRY_COMPARE macros have been moved into QTestLib.
52 These macros formerly lived in tests/shared/util.h but are now provided
53 by including the <QtTest/QtTest> header. In addition,
54 QTRY_VERIFY_WITH_TIMEOUT and QTRY_COMPARE_WITH_TIMEOUT are provided,
55 allowing for specifying custom timeout values.
56 * The QTEST_NOOP_MAIN macro has been removed from the API. If a test is
57 known at compile-time to be inapplicable for a particular build it should
58 be omitted via .pro file logic, or the test should call QSKIP in the
59 initTestCase() method to skip the entire test and report a meaningful
60 explanation in the test log.
61 * The DEPENDS_ON macro has been removed from the API. This macro did nothing
62 and misled some users to believe that they could make test functions depend
63 on each other or impose an execution order on test functions.
64 * The QTest::qt_snprintf function has been removed from the API. This was an
65 internal testlib function that was exposed in the public API due to its use
66 in a public macro. Any calls to this function should be replaced by a call
67 to qsnprintf(), which comes from the <QtCore/QByteArray> header.
68 * The QTest::pixmapsAreEqual() function has been removed from the API.
69 Comparison of QPixmap objects should be done using QCOMPARE, which provides
70 more informative output in the event of a failure.
71 * The QSKIP macro no longer has the "mode" parameter, which caused problems
72 for calculating test metrics, as the SkipAll mode hid information about
73 what test data was skipped. Calling QSKIP in a test function now behaves
74 like SkipSingle -- skipping a non-data-driven test function or skipping
75 only the current data row of a data-driven test function. Every skipped
76 data row is now reported in the test log.
78 - The QSsl::TlsV1 enum value was renamed to QSsl::TlsV1_0 .
81 * Internal QAccessible::State enum value HasInvokeExtension removed
82 - QAccessibleInterface:
83 * The "child" integer parameters have been removed. This moves the api
84 to be closer to IAccessible2.
85 This means several functions lose their integer parameter:
86 text(Text t, int child) -> text(Text t), rect(int child) -> rect()
87 setText(Text t, int child, const QString &text) -> setText(Text t, const QString &text)
88 role(int child) -> role(), state(int child) -> state()
89 relationTo(int child, const QAccessibleInterface *other, int otherChild) ->
90 relationTo(const QAccessibleInterface *other)
91 * Accessible-Action related functions have been removed. QAccessibleInterface
92 subclasses are expected to implement the QAccessibleActionInterface instead.
93 These functions have been removed:
94 QAccessibleInterface::userActionCount, QAccessibleInterface::actionText,
95 QAccessibleInterface::doAction
96 - QAccessibleEvent also loses the child parameter.
97 QAccessibleEvent(Type type, int child) -> QAccessibleEvent(Type type)
98 QAccessibleEvent::child() removed.
99 - QAccessibleActionInterface:
100 * Refactored to be based on action names. All functions have been changed from using
101 int parameters to strings.
103 - QSound has been moved from QtGui to QtMultimedia
105 - QTabletEvent::QTabletEvent does not take a hiResGlobalPos argument anymore,
106 as all coordinates are floating point based now.
110 * The DeviceType enum and deviceType() have been deprecated due to
111 the introduction of QTouchDevice.
113 * The signature of the constructor has changed. It now takes a
114 QTouchDevice pointer instead of just a DeviceType value.
116 * TouchPointState no longer includes TouchPointStateMask and
117 TouchPointPrimary. QTouchEvent::TouchPoint::isPrimary() has
120 * QWidget *widget() has been removed and is replaced by QObject
121 *target() in order to avoid QWidget dependencies.
125 * It is no longer possible to use Q_DECLARE_METATYPE(Foo*) where Foo is only
126 forward declared - it must be fully defined.
130 * The signature of the createEditor and valuePropertyName methods
131 have been changed to take arguments of type int instead of QVariant::Type.
133 - QWindowSystemInterface:
135 * The signature of all handleTouchEvent() variants have changed,
136 taking a QTouchDevice* instead of just a DeviceType value.
137 Platform or generic plug-ins have to create and register at least
138 one QTouchDevice before sending the first touch event.
140 * The event type parameter is removed from handleTouchEvent().
142 - The previously exported function qt_translateRawTouchEvent() has been removed.
143 Use QWindowSystemInterface::handleTouchEvent() instead.
145 - QAbstractEventDispatcher
147 * The signature for the pure-virtual registerTimer() has changed. Subclasses
148 of QAbstractEventDispatcher will need to be updated to reimplement the new
149 pure-virtual 'virtual void registerTimer(int timerId, int interval,
150 Qt::TimerType timerType, QObject *object) = 0;'
152 * QAbstractEventDispatcher::TimerInfo is no longer a QPair<int, int>. It is
153 now a struct with 3 members: struct TimerInfo { int timerId; int interval;
154 Qt::TimerType timerType; }; Reimplementations of
155 QAbstractEventDispatcher::registeredTimers() will need to be updated to pass
156 3 arguments to the TimerInfo constructor (instead of 2).
160 * Removed implicit conversion operator QUuid::operator QString(), instead
161 QUuid::toString() function should be used.
163 - The QHttp, QHttpHeader, QHttpResponseHeader and QHttpRequestHeader classes have
164 been removed, QNetworkAccessManager should be used instead.
166 - The QFtp class is no longer exported, QNetworkAccessManager should be used
171 * On Windows, QProcess::ForwardedChannels will not forward the output of GUI
172 applications anymore, if they do not create a console.
174 - QAbstractSocket's connectToHost() and disconnectFromHost() are now virtual and
175 connectToHostImplementation() and disconnectFromHostImplementation() don't exist.
177 - QTcpServer::incomingConnection() now takes a qintptr instead of an int.
179 - QNetworkConfiguration::bearerName() removed, and bearerTypeName() should be used.
181 - QDir::convertSeparators() (deprecated since Qt 4.2) has been removed. Use
182 QDir::toNativeSeparators() instead.
184 - QIconEngineV2 was merged into QIconEngine
185 You might need to adjust your code if it used a QIconEngine.
188 * several functions and built-in variables were modified to return normalized paths.
190 - QTextCodecPlugin has been removed since it is no longer used. All text codecs
191 are now built into QtCore.
193 - QDir::NoDotAndDotDot is QDir::NoDot|QDir::NoDotDot therefore there is no need
194 to use or check both.
196 ****************************************************************************
198 ****************************************************************************
203 - The directory structure of the qtbase unit-tests has been reworked to
204 more closely match the directory structure of the code under test.
205 Integration tests have been moved to tests/auto/integrationtests.
207 Third party components
208 ----------------------
213 ****************************************************************************
215 ****************************************************************************
219 * drop a bogus QChar::NoCategory enum value; the proper QChar::Other_NotAssigned
220 value is returned for an unassigned codepoints now.
222 * layoutAboutToBeChanged is no longer emitted by QAbstractItemModel::beginMoveRows.
223 layoutChanged is no longer emitted by QAbstractItemModel::endMoveRows. Proxy models
224 should now also connect to (and disconnect from) the rowsAboutToBeMoved and
227 * The default value of the property QSortFilterProxyModel::dynamicSortFilter was
228 changed from false to true.
230 * The signature of the virtual QAbstractItemView::dataChanged method has changed to
231 include the roles which have changed. The signature is consistent with the dataChanged
234 * QFileSystemWatcher is now able to return failure in case of errors whilst
235 altering the watchlist in both the singular and QStringList overloads of
236 addPath and removePath.
238 * QString::mid, QString::midRef and QByteArray::mid, if the position passed
239 is equal to the length (that is, right after the last character/byte),
240 now return an empty QString, QStringRef or QByteArray respectively.
241 in Qt 4 they returned a null QString or a null QStringRef.
243 * QDate, QTime, and QDateTime have undergone important behavioural changes:
244 * QDate::setYMD() is deprecated, use QDate::setDate() instead
245 * Most methods now apply strict validity checks and will return appropriate
246 and consistent values when invalid. For example, QDate::year() will return
247 0 and QDate::shortMonthName() will return QString().
248 * Adding days to a null QDate or seconds to a null QTime will no longer return
252 * QIntValidator and QDoubleValidator no longer fall back to using the C locale if
253 the requested locale fails to validate the input.
257 * Accessibility has been refactored. The hierachy of accessible objects is implemented via
258 proper parent/child functions instead of using navigate which has been deprecated for this purpose.
259 Table and cell interfaces have been added to qaccessible2.h
261 * Touch events and points have been extended to hold additional
262 information like capability flags, point-specific flags, velocity,
267 * QWidget::setInputContext() and QApplication::setInputContext() are removed.
268 Input contexts are now platform specific.
270 * QInputDialog::getInteger() has been obsoleted. Use QInputDialog::getInt() instead.
272 * In Qt 4, many QStyleOption subclasses were introduced in order to keep
273 binary compatibility -- QStyleOption was designed to be extended this way,
274 in fact it embeds a version number. In Qt 5 the various QStyleOption*V{2,3,4}
275 classes have been removed, and their members merged into the respective
276 base classes. Those classes were left as typedefs to keep existing code
277 working. Still, some minor adjustements could be necessary, especially in code
278 that uses QStyleOption directly and does not initialize all the members using
279 the proper Qt API: due to the version bump, QStyle will try to use the additional
280 QStyleOption members, which are left default-initialized.
284 * QHostAddress::isLoopback() API added. Returns true if the address is
285 one of the IP loopback addresses.
287 * QSslCertificate::serialNumber() now always returns the serial number in
290 * The openssl network backend now reads the ssl configuration file allowing
291 the use of openssl engines.
303 * [QTBUG-20615] Autotests can now log test output to multiple destinations
304 and log formats simultaneously.
307 ****************************************************************************
309 ****************************************************************************
312 ****************************************************************************
313 * Platform Specific Changes *
314 ****************************************************************************
322 * Accessibility framework uses IAccessible2
329 Qt for Embedded Linux
330 ---------------------
337 ****************************************************************************
338 * Compiler Specific Changes *
339 ****************************************************************************
342 ****************************************************************************
344 ****************************************************************************
348 * Remove qttest_p4.prf file. From now on we should explicitly enable the
349 things from it which we want. Autotest .pro files should stop using
350 'load(qttest_p4)' and start using 'CONFIG+=testcase' instead.
355 * [QTBUG-8926] [QTBUG-20440] Properties of type QStringList now have
356 translation attributes which apply to all items.
357 They are by default translatable.
366 * [QTBUG-20785] The moc now has a -b<file> option to #include an additional
367 file at the beginning of the generated file.
378 * QMAKE_MOC_OPTIONS variable is now available for passing additional parameters
388 ****************************************************************************
390 ****************************************************************************
391 - The text codecs that were previously plugins are now built into QtCore.
393 ****************************************************************************
394 * Important Behavior Changes *
395 ****************************************************************************
399 * QPointer itself is now deprecated, and the implementation of QPointer
400 has been changed to use QWeakPointer. The old guard mechanism has been
401 removed. This causes two slight changes in behavior when using
404 * When using QPointer on a QWidget (or a subclass of QWidget), previously
405 the QPointer would be cleared by the QWidget destructor. Now, the QPointer
406 is cleared by the QObject destructor (since this is when QWeakPointers are
407 cleared). Any QPointers tracking a widget will NOT be cleared before the
408 QWidget destructor destroys the children for the widget being tracked.
410 * When constructing a QSharedPointer to take ownership of an object after a
411 QPointer is already tracking the object. Previously, the shared pointer
412 construction would not be affected by the QPointer, but now that QPointer
413 is implemented using QWeakPoiner, constructing the QSharedPointer will
419 * The static function QMessageBox::question has changed the default argument
420 for buttons. Before the default was to have an Ok button. That is changed
421 to having a yes and a no button.