387 lines
14 KiB
Groff
387 lines
14 KiB
Groff
Qt 5.6.2 is a bug-fix release. It maintains both forward and backward
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compatibility (source and binary) with Qt 5.6.0.
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For more details, refer to the online documentation included in this
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distribution. The documentation is also available online:
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http://doc.qt.io/qt-5/index.html
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The Qt version 5.6 series is binary compatible with the 5.5.x series.
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Applications compiled for 5.5 will continue to run with 5.6.
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Some of the changes listed in this file include issue tracking numbers
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corresponding to tasks in the Qt Bug Tracker:
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https://bugreports.qt.io/
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Each of these identifiers can be entered in the bug tracker to obtain more
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information about a particular change.
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******************************************************************************
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* Important Behavior Changes *
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******************************************************************************
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- [QTBUG-45031] The NSURLConnection backend of QNetworkAccessManager has
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been removed, since SecureTransport is the default SSL backend on iOS
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and is enabled by default. This means that building with -no-openssl
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-no-securetransport will no longer provide SSL capabilities on iOS.
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- QUrl::resolved() no longer treats a URL with a scheme as a relative URL
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if it matches this URL's scheme. For now it still treats "file:name.txt"
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as relative for compatibility, but be warned that in Qt 5.8 it will no
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longer consider those to be relative. Both isRelative() and RFC 3986 say
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that such URLs are not relative, so starting from Qt 5.8, resolved() will
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return them as is.
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- [QTBUG-47815] QDateTime now uses QLocale to get the "AM" and "PM" strings
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when parsing times, instead of strings obtained from the loaded
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translations.
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******************************************************************************
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* Library *
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******************************************************************************
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General
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-------
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- [QTBUG-45291] Qt headers are now gcc -Wzero-as-null-pointer-constant clean.
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QtCore
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------
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- Optimized toLatin1()/toUtf8() called on a QStringBuilder expression.
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- [QTBUG-18729][QTBUG-32457] Fixed a bug that caused Windows to show
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dialogs prompting the user to insert media when certain operations were
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made with Qt I/O classes, particularly QStorageInfo::mountedVolumes().
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- QCommandLineParser:
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* The methods that exit() the application will now call cleanup routines
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registered with qAddPostRoutine.
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- QDataStream:
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* Fixed compatibility of QTime serialization with Qt 3.
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- QDebug:
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* Fixed streaming of QChars.
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- QJsonObject:
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* Optimized equality operator.
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- QJsonValue:
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* Fixed use-after-free in assignment operator.
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- QLockFile:
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* Fixed permissions on lock files on Unix to allow for adjustments via
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umask.
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* [QTBUG-53392] Improved the robustness of detecting stale lock files on
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Windows.
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- QMutex:
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* [QTBUG-54831] Fixed a bug that caused some applications to crash on
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exit, depending on the order of creation of certain statics inside Qt.
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- QObject:
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* Fixed a crash when connecting a signal to a lambda or functor while
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using Qt::UniqueConnection (note: the connection is still not unique).
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- QStringListModel:
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* Fixed dataChanged()'s 'roles' parameter to always contain both
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Qt::EditRole and Qt::DisplayRole.
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- QTemporaryFile:
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* [QTBUG-54810] Fixed a bug that caused QTemporaryFile to fail when the
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file name contained non-ASCII characters, on Windows.
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- QTimeZone:
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* [QTBUG-53071] Fixed a bug that caused QTimeZone to mis-parse time zones
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whose names were not simple letter and digit combinations.
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- QUrl:
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* Made QUrl stricter in what it accepts for schemes, to comply with the
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relevant standards. QUrl will no longer accept schemes starting with a
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plus (+), a dash (-) or a dot (.).
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- QVariant:
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* [QTBUG-53384] Fixed QVariant::canConvert and conversion from integer
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types to enumeration types.
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* [QTBUG-54893] Fixed a bug that caused QVariants not to compare properly
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if they contained QStringLists.
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- QVector:
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* [QTBUG-51758] Fixed a bug that would cause QVector to crash if one
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called reserve(0).
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- QXmlStreamReader:
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* Fixed a bug in the XML parser that prevented to load XML that
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contained invalid characters for XML 1.0.
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- QXmlStreamWriter:
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* Fixed a bug that prevented the generation of valid XML files when
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using encoding with 8 bit per character but not ASCII compatible.
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QXMLStreamWriter generated XML markup using always ASCII in this case.
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QtGui
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-----
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- Fixed UBSan errors in
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* QColor
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* QGrayRaster
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* QRasterizer
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- Removed a total of 1610 relocations from the library.
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- QGuiApplication:
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* [QTBUG-51703] Fixed a bug that would cause QGuiApplication::sync() to
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be left undefined for Qt builds without session management support.
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- QIconLoaderEngine:
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* Fixed theme lookup for scalable entries.
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- Text:
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* [QTBUG-42033] Fixed bug where a QTextLayout with
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ShowLineAndParagraphSeparators would modify the layout's input string.
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* [QTBUG-49452] Fixed a performance regression in Freetype engine that
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was introduced in Qt 5.5.
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* [QTBUG-54180] Fixed performance regression when rapidly switching
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between a large set of fonts.
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- Windows:
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* [QTBUG-54494] Fixed stretch when combined with either no or vertical
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hinting preference or a device pixel ratio different from 1.
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* [QTBUG-51024] Fixed height of text bounding box when using no or
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vertical hinting preference, or when the device pixel ratio is
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different from 1.
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QtNetwork
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---------
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- QAuthenticator:
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* [QTBUG-53338] Fixed crash when comparing an initialized QAuthenticator
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with an uninitialized QAuthenticator.
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QtSql
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-----
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- [QTBUG-53969][QTBUG-53237] Fixed QSqlQuery::prepare value truncation
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error when using UNSIGNED values in a MySQL database.
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QtWidgets
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---------
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- Fixed UBSan/Coverity errors in:
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* QAbstractItemView
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* QDataWidgetMapper
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* QTreeWidget
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* QWidgetLineControl
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- Removed a total of 167 relocations from the library.
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- QAbstractItemDelegate:
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* [QTBUG-16469] Show localized detailed tooltips and "What's this?"
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texts.
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- QAbstractItemView:
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* [QTBUG-53541] Fixed a bug involving drawing the drop indicator
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where it shouldn't be drawn.
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* Fixed a bug in setSelectionModel() which could lead to model indexes
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from a different model be reused on a new model.
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- QAbstractSpinBox:
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* [QTBUG-55249] Fixed a bug related to first key press.
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- QColorDialog:
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* Fixed ignored alpha channel in getRgb().
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- QComboBox:
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* [QTBUG-54191] Fixed a crash on setEditable(false) called from
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editTextChanged().
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- QCompleter:
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* [QTBUG-54642] Fixed wrong completion role after a QFileSystemModel
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has been used.
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- QDesktopWidget:
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* [QTBUG-52101] Fixed tracking of QScreens.
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* [QTBUG-52606] Fixed a bug related to DPI-scaling in screenNumber().
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- QDialog:
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* [QTBUG-52735] Fixed a bug involving moves between screens with
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different DPI-scaling factors.
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- QDockWidget:
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* [QTBUG-52107][QTBUG-53754] Fixed bugs related to floating group tab
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window title.
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* [QTBUG-52108] A QDockWidgetGroupWindow can now be dragged into one of
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its QDockWidgets.
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* [QTBUG-53808] Fixed a bug that caused an undocked dock widget to lose
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its decoration.
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* [QTBUG-54185] Unbroke drag-and-drop.
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- QGraphicsProxyWidget:
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* [QTBUG-55112] Fixed a bug that caused the widget to receive events
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during construction.
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- QLineEdit:
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* [QTBUG-49374] Fixed icons being too small on a High DPI screen
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without scaling.
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* [QTBUG-52796] Fixed QKeySequence::MoveToStartOfLine shortcut
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being ignored.
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* [QTBUG-54425] Fixed missing clear button on macOS.
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- QMainWindow:
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* [QTBUG-50491] Fixed a bug related to restoring dock widgets with
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GroupedDragging.
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* [QTBUG-52108] Fixed a bug related to context menus in the presence of
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floating tabs.
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- QMenu:
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* [QTBUG-53054] Submenus can now be opened on left mouse button
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press, too.
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- QMenuBar:
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* [QTBUG-53205] Fixed bugs (incl. crashes) involving reparented
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menu bars.
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- QOpenGLWidget:
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* [QTBUG-50818][QTBUG-51815][QTBUG-54241][QTBUG-52419] Fixed several
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repainting bugs and other drawing artifacts.
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- QSideBar:
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* Fixed a nullptr dereference on platforms that do not support
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QFileSystemWatcher.
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- QSystemTrayIcon:
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* [QTBUG-53591] Use large icon for balloon message on Windows systems.
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- QTabBar:
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* Fixed a performance problem involving font metrics.
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- QTreeView:
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* [QTBUG-52793] Fixed a key navigation bug when the columns were
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reordered.
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- QTreeWidget:
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* [QTBUG-50207] Now handles device pixel ratio in animations correctly.
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- QWidget:
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* [QTBUG-39887] Restored documented behavior for the
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WA_X11NetWmWindowType* attributes.
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* [QTBUG-41135][QTBUG-50030][QTBUG-50136][QTBUG-52507] Fixed
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mapTo/FromGlobal() in case of widget hierarchies embedded into
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QGraphicsView with transformations.
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* [QTBUG-45484] Fixed setWindowRole().
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* [QTBUG-50796] Reduced paint-events when resizing native widgets.
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* [QTBUG-52123] Fixed a bug by which opaque texture-based widgets
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were not always shown.
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* [QTBUG-53515] Added a workaround for render-to-texture widgets in
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fullscreen windows.
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* [QTBUG-54734] Worked around an issue with translucent GL windows
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on Windows.
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* [QTBUG-54906] Fixed a bug relaed to fullscreen handling on Windows.
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- Styles:
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* Fixed several cases of QStyleOptions being created with null
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version.
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* [QTBUG-51266] Fixed painting of small progress bars on Vista+.
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* [QTBUG-54630] Fixed a crash in QMacStyle::styleHint().
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* [QTBUG-49374] The Windows style now takes the monitor's differing
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logical DPI into account when calculating native metrics.
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******************************************************************************
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* Platform-specific Changes *
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******************************************************************************
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Android
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-------
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- [QTBUG-50724] Added support for clang compiler.
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- [QTBUG-53511] Fixed CJK font resolution on Android 7.
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BSDs
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----
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- The freebsd-g++ mkspec was moved back and no longer requires the
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"unsupported/" prefix, matching the FreeBSD ports tree, as FreeBSD 9.3
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still defaults to using GCC. Users of GCC that did not previously use
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the ports patch will need to adapt their build scripts and drop the
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"unsupported/" prefix.
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- Fixed a number of compilation issues on FreeBSD, NetBSD and OpenBSD. Qt
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should now build out-of-the-box (no patches needed) on those systems.
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Linux
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-----
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- [QTBUG-54733] It is now possible to opt out from installing signal
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handlers when running with eglfs and linuxfb by setting the
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QT_QPA_NO_SIGNAL_HANDLER environment variable to a non-zero value.
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- Fixed the value of the 'defined' field in ATSPI GetAttributeValue
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results.
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macOS
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-----
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- [QTBUG-48953] Pasting text from Qt applications to Apple Mail now works.
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- [QTBUG-48953] “text/vcard” is now required as the mime type when
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placing vCards on the clipboard.
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- OS X => macOS rename in Q_OS_ macros/docs, qmake scopes,
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file selectors, etc.
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- Add new QSysInfo values and MAC_OS_X / __MAC_ / __IPHONE_ values for
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macOS 10.12 and iOS 9.1 through 10.0.
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- Update prettyProductName with new macOS "Sierra" codename.
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Windows
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-------
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- Fixed a new[]/delete mismatch in Windows tablet support.
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****************************************************************************
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* Tools *
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****************************************************************************
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moc
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---
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- [QTBUG-53441] Fixed crash on file ending with a backslash followed by
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carriage return
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configure & build system
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------------------------
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- [QTBUG-35886][QTBUG-51417] Fixed Fontconfig vs. system FreeType
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configuration.
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- [QTBUG-43784][X11] Fixed detection of GLX with -qt-xcb.
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- [QTBUG-52951] Fixed dynamic library support detection for platforms
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without libdl.
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- [QTBUG-53038] Fixed running of configure tests outside qtbase when
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cross compiling on Windows (for example for Android).
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- [QTBUG-53312] The flags supplied by the configure -D/-I/-L/-l options
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are now applied after Qt's own flags. This helps in some cases when
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the provided paths contain files which conflict with the Qt build.
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- [QTBUG-55011][Unix] Fixed -no-pkg-config being ignored by some
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configure tests, which led to build failures later on.
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- Fixed configure tests outside qtbase when $MAKEFLAGS contains the
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-i flag.
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- [Android] Some unused plugins are not built anymore.
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- [MinGW] Added support for -separate-debug-info.
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- [Unix] Added configure -no-opengles3 option.
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- [Unix] Fixed MySQL detection/use on RHEL 6.6.
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qmake
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-----
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- [QTBUG-41830] Fixed nested custom functions inheriting their callers'
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arguments.
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- [QTBUG-53895][MSVC] Started using separate PDB files for compiling
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and linking.
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- [QTBUG-54036][Darwin] Fixed installation of debug symbols.
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- [QTBUG-54550] Fixed access to freed memory in $$absolute_path().
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- [QTBUG-55183][nmake] _WINDLL is now automatically defined when building
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a DLL, consistently with Visual Studio.
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- [QTBUG-55649][QTBUG-55915][Xcode] Fixed support for Xcode 8.
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- Fixed several cases where the error() function would not abort qmake.
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- Interrupting a command run via system() will now abort qmake as well.
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- The packagesExist() function will now warn when used when Qt was
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configured with -no-pkg-config.
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- [Android] The default compiler flags were adjusted to match newer
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NDK versions.
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