102 lines
5.2 KiB
Groff
102 lines
5.2 KiB
Groff
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Qt 5.12.2 is a bug-fix release. It maintains both forward and backward
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compatibility (source and binary) with Qt 5.12.0 through 5.12.1.
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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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https://doc.qt.io/qt-5/index.html
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The Qt version 5.12 series is binary compatible with the 5.11.x series.
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Applications compiled for 5.11 will continue to run with 5.12.
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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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* QtQml *
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****************************************************************************
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- Important Behavior Changes:
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* The parameters passed to C++ functions from QML are now checked for
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compatibility with the expected arguments. If they cannot be
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converted, a warning is printed. In future versions of Qt a type error
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will be thrown in JavaScript and the function will not be invoked.
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* [QTBUG-73239] Removed revisions from the new Qt.labs.settings methods
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and properties that were introduced in 5.12. Qt.labs plugins are
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intended to always have revision 1.0 until they graduate.
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- QQmlApplicationEngine:
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* [QTBUG-73649] QQmlApplicationEngine connects quit() and exit() signals
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with queued connections to avoid problems with AutoConnection, when
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connecting to QCoreApplication slots.
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- [QTBUG-69340] QML cache files are not unnecessarily re-generated.
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- [QTBUG-71325] Fixed a crash in V4 string to number conversion on 32-bit
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platforms.
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- [QTBUG-72137] Fixed a crash in QML garbage collector when accessing
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other items from Component.onDestruction.
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- [QTBUG-72352] QML can be built with -no-feature-translation.
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- [QTBUG-72407] We now annotate stack traces when frames are elided
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through tail calls.
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- [QTBUG-72734] Fixed a crash in the parser on certain kinds of bad input.
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- [QTBUG-72858] Exception handlers are correctly scoped for try blocks and
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for "for ... in" loops.
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- [QTBUG-72908] QML can be built with -c++std=c++11 again.
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- [QTBUG-72972] QQmlMetaType deletes attached properties in its destructor
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to avoid a crash.
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- [QTBUG-73009] Fixed a crash with qt.qml.binding.removal.info=true.
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- [QTBUG-73013] If a signal sender is deleted during the handling of the
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signal in QML, the QML engine won't crash anymore.
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- [QTBUG-73152] Brought behavior of String.replace() in line with other
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JS engines: "x".replace("x", "$1") gives "$1" in both JSC and V8, as there
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are no captures that could be used as a replacement for $1. Two-digit
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captures ($nm) get applied if $nm captures exist. If there are less than nm
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but more than n captures available $n is replaced by the n'th capture and m
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is copied over verbatim.
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- [QTBUG-73425] Fixed allocation of large arrays at startup.
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- [QTBUG-73733] Fixed an access-after-delete crash in DelegateModel.
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- [QTBUG-73734] When a Q_GADGET type, marked as a primitive type with
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Q_DECLARE_METATYPE, is emitted with a signal, it can now be accessed in QML.
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- [QTBUG-73750] Fixed undefined Q_ENUM value in QML Connections object.
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- [QTBUG-73821] Fixed a failing assert on 32bit platforms.
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- The JIT compiler is disabled for the IPL32 (or X32) ABI. It did not work
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before.
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- The tail call optimization correctly counts method arguments on 32bit
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platforms now.
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- The JavaScript engine now tolerates UINT_MAX as array index.
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****************************************************************************
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* QtQuick *
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****************************************************************************
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- TextInput/security:
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* When the TextInput is used for password input, preallocate a buffer
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for the string that stores the entered value and zero-out the string
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on TextInput destruction to avoid leaking sensitive data to process
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memory
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- [QTBUG-63271] If a MouseArea sets itself invisible or disabled while
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handling a mouse press, it does not acquire the exclusive grab
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- [QTBUG-71887] TapHandler now consistently forgets touchpoints that occur
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outside its parent's bounds. This eliminates the warning "pointId is
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missing from current event, but was neither canceled nor released" when
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tapping quickly and having some of the taps fall out of bounds.
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(The warning still exists though, in case there are other scenarios where
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Handlers remember "wanting" certain touchpoints and then they go missing.)
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- [QTBUG-72822] PinchHandler now correctly holds its target in place when
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axes are disabled.
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- [QTBUG-71918] PointerHandlers are declared as direct children of
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Flickable (ListView, TableView etc.) now get the pointer events properly.
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- [QTBUG-42155] Canvas now handles switching between object and string
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based colors
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- [QTBUG-73113] Fixed a crash when reparenting QML Canvas items
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- [QTBUG-73013] Fixed a crash in QuickView on setSource while deleting
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the sender.
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- [QT3DS-1419] Improved quality of Qt 3D Studio text labels.
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