5957f245c6
This is done per the mailing list discussion at http://www.mail-archive.com/development@qt-project.org/msg01603.html Change-Id: Ic31c052e7f35c576250bf11826ca82e371142c82 Reviewed-by: Olivier Goffart <ogoffart@woboq.com> Reviewed-by: Robin Burchell <robin+qt@viroteck.net>
78 lines
3.1 KiB
Plaintext
78 lines
3.1 KiB
Plaintext
Qt 5.2 introduces many new features and improvements as well as bugfixes
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over the 5.1.x series. For more details, refer to the online documentation
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included in this distribution. The documentation is also available online:
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http://qt-project.org/doc/qt-5.2
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The Qt version 5.2 series is binary compatible with the 5.1.x series.
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Applications compiled for 5.1 will continue to run with 5.2.
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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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http://bugreports.qt-project.org/
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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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* Library *
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****************************************************************************
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QtWidgets
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---------
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- QAbstractScrollArea now has a SizeAdjustPolicy. If it is set to AdjustToContents
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it will make use of the new protected viewportSizeHint() (binary compatible since it
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was reserved in Qt5). This function returns a suggested size based on contents.
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- QTreeView now has setTreePosition to allow the treestructure to show data from other
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columns than logicalindex zero.
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- [QTBUG-4206] QTableView resizeToContents will now adjust to actual contents
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and not just visible area. QHeaderView::setAutoResizePrecision() has been
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introduced to control how precise the autoResize should be.
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- QFileDialog::setDefaultSuffix() removes leading dot characters.
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- QSizePolicy got a retainSizeWhenHidden attribute.
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- [QTBUG-31602] QSpinBox size calculation will now be fixed when stylesheets are
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used.
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QtCore
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------
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- [QTBUG-30250] QTime, QDateTime:
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When calling QTime::toString(Qt::TextDate) and QTime::toString(Qt::ISODate),
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milliseconds are now included in the returned string. This also applies to
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QDateTime::toString(Qt::TextDate) and QDateTime::toString(ISODate).
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- QtAlgorithms
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With STL no longer being optional for building and using Qt, a number of parts
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of QtAlgorithms no longer make sense, and have therefore been deprecated.
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Replacements are available in the STL, and generally have much better
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performance, but are not instantly source-compatible in all cases. For
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instance, specialization of qLess or qSwap means that a direct port to
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std::sort from qSort may not be possible, as std::sort does not use any of
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them; a possible workaround is explicitly passing a qLess functor to
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std::sort:
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std::sort(container.begin(), container.end(), qLess<T>());
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The functions in QtAlgorithms that have been deprecated, along with their
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STL counterparts, are:
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- qBinaryFind (std::binary_search / std::lower_bound)
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- qCopy (std::copy)
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- qCopyBackward (std::copy_backward)
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- qEqual (std::equal)
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- qFill (std::fill)
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- qFind (std::find)
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- qCount (std::count)
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- qSort (std::sort)
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- qStableSort (std::stable_sort)
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- qLowerBound (std::lower_bound)
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- qUpperBound (std::upper_bound)
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- qLess (std::less)
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- qGreater (std::greater)
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