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