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* One more fix for dithering.Michael Dominic K2010-11-021-8/+8
| | | | | Merge-request: 2499 Reviewed-by: Samuel Rødal <samuel.rodal@nokia.com>
* Merge branch '4.7' of scm.dev.nokia.troll.no:qt/oslo-staging-2 into ↵Qt Continuous Integration System2010-11-0120-140/+388
|\ | | | | | | | | | | | | | | | | | | | | | | | | 4.7-integration * '4.7' of scm.dev.nokia.troll.no:qt/oslo-staging-2: Doc: Fixing typo Fix QTBUG-14640:oci performance problem with qlonglong 32bit => 16bit conversion has 4byte-aligned output. Fix gcc bug in qReallocAligned Prevented threading related crash in OpenGL module. Fix possible crash in QStaticText and QDeclarativeTextLayout Fix QTBUG-14132 oracle (xe) stored procedures with bind variables get errors
| * Merge branch '4.7' of scm.dev.nokia.troll.no:qt/oslo-staging-2 into ↵Qt Continuous Integration System2010-11-0120-140/+388
| |\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 4.7-integration * '4.7' of scm.dev.nokia.troll.no:qt/oslo-staging-2: Doc: Fixing typo Fix QTBUG-14640:oci performance problem with qlonglong 32bit => 16bit conversion has 4byte-aligned output. Fix gcc bug in qReallocAligned Prevented threading related crash in OpenGL module. Fix possible crash in QStaticText and QDeclarativeTextLayout Fix QTBUG-14132 oracle (xe) stored procedures with bind variables get errors
| | * Doc: Fixing typoSergio Ahumada2010-11-015-7/+7
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| | * Merge branch '4.7' of scm.dev.nokia.troll.no:qt/oslo-staging-2 into ↵Qt Continuous Integration System2010-11-0115-133/+381
| | |\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 4.7-integration * '4.7' of scm.dev.nokia.troll.no:qt/oslo-staging-2: Fix QTBUG-14640:oci performance problem with qlonglong 32bit => 16bit conversion has 4byte-aligned output. Fix gcc bug in qReallocAligned Prevented threading related crash in OpenGL module. Fix possible crash in QStaticText and QDeclarativeTextLayout Fix QTBUG-14132 oracle (xe) stored procedures with bind variables get errors
| | | * Fix QTBUG-14640:oci performance problem with qlonglongCharles Yin2010-11-012-1/+38
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | missing qlonglong switch case in bindValue(), so all qlonglong value fall back into QString, which makes the query slow. Change-Id: I7d8bf1c44ce3aaa15ee85be325a5c98dc3ed3ce1 Task-number:QTBUG-14640 Reviewed-by: Michael Goddard
| | | * Merge branch '4.7' of scm.dev.nokia.troll.no:qt/oslo-staging-2 into ↵Qt Continuous Integration System2010-10-3015-132/+343
| | | |\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 4.7-integration * '4.7' of scm.dev.nokia.troll.no:qt/oslo-staging-2: 32bit => 16bit conversion has 4byte-aligned output. Fix gcc bug in qReallocAligned Prevented threading related crash in OpenGL module. Fix possible crash in QStaticText and QDeclarativeTextLayout Fix QTBUG-14132 oracle (xe) stored procedures with bind variables get errors
| | | | * Merge branch '4.7' of scm.dev.nokia.troll.no:qt/oslo-staging-2 into ↵Qt Continuous Integration System2010-10-2915-132/+343
| | | | |\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 4.7-integration * '4.7' of scm.dev.nokia.troll.no:qt/oslo-staging-2: 32bit => 16bit conversion has 4byte-aligned output. Fix gcc bug in qReallocAligned Prevented threading related crash in OpenGL module. Fix possible crash in QStaticText and QDeclarativeTextLayout Fix QTBUG-14132 oracle (xe) stored procedures with bind variables get errors
| | | | | * 32bit => 16bit conversion has 4byte-aligned output.Michael Dominic K2010-10-291-4/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Merge-request: 2499 Reviewed-by: Samuel Rødal <samuel.rodal@nokia.com>
| | | | | * Fix gcc bug in qReallocAlignedOlivier Goffart2010-10-291-8/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | the line faked.pptr[-1] = real.ptr; was ignored by the GCC 4.5. (optimized out) Workaround by using proper reinterpret_cast casting instead of union casting. Fixes crash in tst_Collections::alignment The crash would occurs for any use of qReallocAligned with alignement > sizeof(void*) (fortunately this is not often called) Reviewed-by: thiago
| | | | | * Prevented threading related crash in OpenGL module.Samuel Rødal2010-10-293-24/+169
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If the last shallow copy of a QImage which is cached in the QGLTextureCache is destroyed in a thread at the same time as the QGLContext which the texture was initialized in is active in a different thread, the QImage thread incorrectly tries to make the context active in two threads at once. To prevent this from happening it's best to always do the texture clean-up in the main thread. Task-number: QT-4238 Reviewed-by: Eskil Abrahamsen Blomfeldt
| | | | | * Merge branch '4.7' of scm.dev.nokia.troll.no:qt/oslo-staging-2 into ↵Qt Continuous Integration System2010-10-2910-96/+151
| | | | | |\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 4.7-integration * '4.7' of scm.dev.nokia.troll.no:qt/oslo-staging-2: Fix possible crash in QStaticText and QDeclarativeTextLayout Fix QTBUG-14132 oracle (xe) stored procedures with bind variables get errors
| | | | | | * Fix possible crash in QStaticText and QDeclarativeTextLayoutEskil Abrahamsen Blomfeldt2010-10-298-32/+88
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The QStaticTextItem held an uncounted reference to QFontEngine. The pointer would dangle in some cases where there was no font object referencing the engine and the cache was cleaned out (e.g. when a new application font is added.) Properly count the reference, and also add reference counting to userData to make it harder to shoot yourself in the foot, since the QStaticTextItem class is now being used in different places, Task-number: QTBUG-14446 Reviewed-by: Martin Jones
| | | | | | * Fix QTBUG-14132 oracle (xe) stored procedures with bind variables get errorsCharles Yin2010-10-292-64/+63
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Strange Oracle bug: some Oracle servers crash the server process with non-zero error handle (mostly for 10g). So pass null error handle pointer to OCIAttrSet when setting OCI_ATTR_CHARSET_FORM to bypass this bug. Change-Id: Ifcf65994a22783e69a89bebe1adb882cdf36bdbb Task-number:QTBUG-14132 Reviewed-by: Michael Goddard
* | | | | | | Merge branch '4.7' of scm.dev.nokia.troll.no:qt/oslo-staging-1 into ↵Qt Continuous Integration System2010-11-018-81/+376
|\ \ \ \ \ \ \ | |/ / / / / / |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 4.7-integration * '4.7' of scm.dev.nokia.troll.no:qt/oslo-staging-1: QNAM HTTP: tst_qnetworkreply with setReadBufferSize() set Fix compilation on AIX 5.3 with gcc Doc: Fixed typo Fix poor English in QStyle::polish documentation. Fix a few typos in comments and docs.
| * | | | | | Merge branch '4.7' of scm.dev.nokia.troll.no:qt/oslo-staging-1 into ↵Qt Continuous Integration System2010-11-018-81/+376
| |\ \ \ \ \ \ |/ / / / / / / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 4.7-integration * '4.7' of scm.dev.nokia.troll.no:qt/oslo-staging-1: QNAM HTTP: tst_qnetworkreply with setReadBufferSize() set Fix compilation on AIX 5.3 with gcc Doc: Fixed typo Fix poor English in QStyle::polish documentation. Fix a few typos in comments and docs.
| * | | | | | QNAM HTTP: tst_qnetworkreply with setReadBufferSize() setDavid Faure2010-11-011-71/+366
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This new method tests 4 cases (http/https, with/without buffer size) and checks the send/receive rates to check that the actual transfer rate was limited, not just the speed of emission of data to the application. Task-number: QTBUG-6276 Merge-request: 872 Reviewed-by: Markus Goetz <Markus.Goetz@nokia.com>
| * | | | | | Fix compilation on AIX 5.3 with gccKent Hansen2010-11-011-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | "error: invalid pointer to bit-field `QAbstractStatePrivate::isMachine'" The extra qualification is not needed anyway, so remove it. Task-number: QTBUG-14491 Reviewed-by: Eskil Abrahamsen Blomfeldt
| * | | | | | Doc: Fixed typoThorbjørn Lindeijer2010-11-011-1/+1
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| * | | | | | Merge branch '4.7' of scm.dev.nokia.troll.no:qt/oslo-staging-1 into ↵Qt Continuous Integration System2010-11-015-8/+8
| |\ \ \ \ \ \ | | |/ / / / / | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 4.7-integration * '4.7' of scm.dev.nokia.troll.no:qt/oslo-staging-1: Fix poor English in QStyle::polish documentation. Fix a few typos in comments and docs.
| | * | | | | Fix poor English in QStyle::polish documentation.Jason McDonald2010-11-011-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Task-number: QTBUG-10538 Reviewed-by: Trust Me
| | * | | | | Fix a few typos in comments and docs.Jason McDonald2010-11-014-4/+4
| | |/ / / / | | | | | | | | | | | | | | | | | | | | | | | | Task-number: QTBUG-13714 Reviewed-by: Trust Me
* | | | | | Merge branch '4.7' of scm.dev.nokia.troll.no:qt/qt-qml into 4.7-integrationQt Continuous Integration System2010-11-013-1/+60
|\ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | * '4.7' of scm.dev.nokia.troll.no:qt/qt-qml: Quickly clicking an item that doesn't use double clicking should result in two separate clicks
| * | | | | | Quickly clicking an item that doesn't use double clicking should result in ↵Joona Petrell2010-11-013-1/+60
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | two separate clicks Task-number: QTBUG-14832 Reviewed-by: Martin Jones
* | | | | | | Merge branch '4.7' of scm.dev.nokia.troll.no:qt/qt-s60-public into ↵Qt Continuous Integration System2010-11-011-0/+1
|\ \ \ \ \ \ \ | |_|/ / / / / |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 4.7-integration * '4.7' of scm.dev.nokia.troll.no:qt/qt-s60-public: Fix OpenVG painting artifacts after restoreState().
| * | | | | | Fix OpenVG painting artifacts after restoreState().Jason Barron2010-11-011-0/+1
| | |/ / / / | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When the state is restored and the 'dirty' flag indicates that the clip state has changed, the paint engine needs to set 'scissorDirty' flag to true so that updateScissor() applies the restored clip region to the scissor rects. Task-number: QTBUG-14907 Reviewed-by: Jani Hautakangas
* | | | | | Merge branch '4.7' of scm.dev.nokia.troll.no:qt/qt-qml into 4.7-integrationQt Continuous Integration System2010-11-0168-5595/+11728
|\ \ \ \ \ \ | |/ / / / / |/| / / / / | |/ / / / | | | | | * '4.7' of scm.dev.nokia.troll.no:qt/qt-qml: Fix QML visual tests on Mac.
| * | | | Fix QML visual tests on Mac.Yann Bodson2010-11-0168-5595/+11728
|/ / / / | | | | | | | | | | | | Task-number: QTBUG-14792
* | | | Merge branch 'qt-4.7-from-4.6' of scm.dev.nokia.troll.no:qt/qt-integration ↵Qt Continuous Integration System2010-10-302-0/+36
|\ \ \ \ | |/ / / |/| | | | | | | | | | | | | | | | | | | | | | | into 4.7-integration * 'qt-4.7-from-4.6' of scm.dev.nokia.troll.no:qt/qt-integration: Fix Windows compilation. Fixed race condition in raster paint engine.
| * | | Merge remote branch 'origin/4.6' into qt-4.7-from-4.6Olivier Goffart2010-10-302-0/+36
| |\ \ \ |/ / / / | | | | | | | | | | | | Conflicts: tests/auto/qpainter/tst_qpainter.cpp
| * | | Merge branch '4.6' of scm.dev.nokia.troll.no:qt/oslo-staging-2 into ↵Qt Continuous Integration System2010-10-272-0/+36
| |\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 4.6-integration * '4.6' of scm.dev.nokia.troll.no:qt/oslo-staging-2: Fix Windows compilation. Fixed race condition in raster paint engine.
| | * | | Fix Windows compilation.Samuel Rødal2010-10-272-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Don't take for granted that these are included... Task-number: QTBUG-14614 Reviewed-by: Bradley T. Hughes
| | * | | Fixed race condition in raster paint engine.Samuel Rødal2010-10-272-0/+34
| |/ / / | | | | | | | | | | | | | | | | | | | | | | | | We need to protect the gradient cache accesses with a mutex. Task-number: QTBUG-14614 Reviewed-by: Bradley T. Hughes
* | | | Merge branch '4.7' of scm.dev.nokia.troll.no:qt/oslo-staging-1 into ↵Qt Continuous Integration System2010-10-292-12/+17
|\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 4.7-integration * '4.7' of scm.dev.nokia.troll.no:qt/oslo-staging-1: dbus does not use this. fix build. Fix memory leak on exit
| * | | | dbus does not use this. fix build.Lorn Potter2010-10-291-4/+4
| | | | | | | | | | | | | | | | | | | | Reviewed-by: trust me
| * | | | Fix memory leak on exitHarald Fernengel2010-10-291-8/+13
| | |/ / | |/| | | | | | | | | | | | | | | | | | | | | | The confFile was lost if the cache was already gone (e.g. on app exit). This patch ensures that the confFile is always deleted. Reviewed-by: João Abecasis
* | | | Merge branch '4.7' of scm.dev.nokia.troll.no:qt/qt-qml into 4.7-integrationQt Continuous Integration System2010-10-2966-32/+19931
|\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * '4.7' of scm.dev.nokia.troll.no:qt/qt-qml: Update webview visual tests to new skip mode Remove unnecessary QML import project dependency to Symbian deployment pri file used by Qt demos Update visual tests for Mac Revert "Disable WebView visualtests" Mark dynamic.qml as expect-fail the new way Update gridview visual tests Revert "Mark qdeclarativegridview autotests as expect-fail"
| * \ \ \ Merge branch '4.7' of scm.dev.nokia.troll.no:qt/qt-qml into 4.7Alan Alpert2010-10-298-6/+25
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| | * | | | Remove unnecessary QML import project dependency to Symbian deployment pri ↵Joona Petrell2010-10-293-3/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | file used by Qt demos Task-number: QT-4197 Reviewed-by: Jason Barron * breaks compilation of releases that omit Qt demos directory * qt import plugins have different deployment configuration than demo applications * declarative import plugins already get their symbian-related settings from src\imports\qimportbase.pri that is basically a copy from qpluginbase.pri written for plugins
| | * | | | Update visual tests for MacYann Bodson2010-10-294-0/+22
| | | | | | | | | | | | | | | | | | | | | | | | Task-number: QTBUG-14792
| * | | | | Update webview visual tests to new skip modeAlan Alpert2010-10-2913-21/+23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | New mode requires them to at least compile. Now that I've noticed this, removing that check on compile failures in QDeclarativeTester. Task-number: QTBUG-14792
| * | | | | Revert "Disable WebView visualtests"Alan Alpert2010-10-2924-0/+12940
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This reverts commit 8ba02a8f5a537b9f7e1ff671abe6eed67029db58. ExpectFail state has been altered. Redoing that commit. This commit also adds the new line to indicate tests we don't care about
| * | | | | Mark dynamic.qml as expect-fail the new wayAlan Alpert2010-10-299-2/+1605
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Also remove the check for the old way in tst_qmlvisual Task-number: QTBUG-14792
| * | | | | Update gridview visual testsAlan Alpert2010-10-2913-373/+374
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The bug found in gridview.qml doesn't actually stop the test from passing, so it's now updated. Task-number: QTBUG-14792
| * | | | | Revert "Mark qdeclarativegridview autotests as expect-fail"Alan Alpert2010-10-2925-4/+5338
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This reverts commit b6ee57e14e145d9caa3f572d55447ec92f78cea4. Changed our mind about how to mark tests as expect-fail
* | | | | | Merge branch '4.7' of scm.dev.nokia.troll.no:qt/qt-s60-public into ↵Qt Continuous Integration System2010-10-2936-522/+792
|\ \ \ \ \ \ | |_|_|/ / / |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 4.7-integration * '4.7' of scm.dev.nokia.troll.no:qt/qt-s60-public: Play whole file in spectrum analyzer demo Do not unnecessarily reset state of spectrum demo Set SpectrumAnalyserThread parent to 0 before calling moveToThread() Avoid being killed by graphics out-of-memory monitor. Revert function renaming in QtOpenVG. Support tactile feedback in QWidgets from QS60Style Support tactile feeedback from QS60Style for QWidgets Making the buttons less finger unfriendly Readded .def file entries after a little stunt Do not crash on Symbian Temporarily remove .def file entries for a little stunt Fixed crash with QClipboard in Symbian^3 Fallback to vgWritePixels in drawPixmap.
| * | | | | Play whole file in spectrum analyzer demoGareth Stockwell2010-10-2911-467/+369
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This change required a significant refactoring of the application, including: * Re-write WavFile class so that it inherits from QFile rather than taking a QIODevice as an argument to its method calls. * Modified Engine class so that its internal QByteArray buffer (m_buffer) need not correspond to the entire clip. This was done by introducing the m_bufferPosition variable, which indicates the offset from the start of the clip to the start of the region of the clip which is currently held in memory. For tone generation and record/playback modes, the buffer does still map directly to the whole clip, so m_bufferPosition is always zero. For file playback, the WavFile instance is the QIODevice which is passed to QAudioOutput; m_buffer is just the part of the file which is currently in memory for spectrum analysis, level calculation and waveform rendering. * For file playback, introduced a second WavFile instance as a member of the Engine class. This is because QFile::seek() is called in order to read the part of the file currently required for analysis. If the QAudioOutput implementation passes its QIODevice across a thread boundary, this seeking causes playback to jump around within the file rather than progressing smoothly forward. * Modified the audioLength utility function so that its return value is always a multiple of the sample size. In the process of making the above changes, a few other minor modifications were made: * Modify all internal APIs concerned with buffer offsets and lengths to deal in bytes. Previously, some calls passed values in microseconds and others in bytes, which was confusing. * Remove write functionality from WavFile class, since it is not used in this application. Task-number: QTBUG-12936
| * | | | | Do not unnecessarily reset state of spectrum demoGareth Stockwell2010-10-293-45/+61
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch ensures that the state of the application is not reset when: - Any of the 'Play generated tone', 'Play file' or settings dialogs are opened - Any of the 'Play generated tone', 'Play file' or settings dialogs are dismissed by pressing the Cancel button - A new input or output device is selected via the settings dialog, and that new device supports the data format which is currently being used within the application - The window function is changed via the settings dialog Note that the application is still reset if a new input or output device is selected via the settings dialog, and this device does not support the current data format. Task-number: QTBUG-12935 Task-number: QTBUG-14810
| * | | | | Set SpectrumAnalyserThread parent to 0 before calling moveToThread()Gareth Stockwell2010-10-291-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | QObjects with a parent cannot be moved to a different thread.
| * | | | | Avoid being killed by graphics out-of-memory monitor.Jason Barron2010-10-291-0/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When an application requests more graphics memory, the GOOM monitor will start looking for other applications to kill in order to recover the requested graphics memory. The first step in this process is to send a custom event to the application indicating that it is a candidate for termination. If the application does not acknowledge this event, it will be killed immediately. However, since Qt releases its graphics memory when the app is obscured, we should indicate that we handle this event such that Qt has a chance to finish freeing resources. If after a certain time, the app has not freed its resources it will be killed anyway. This essentially buys Qt some time to avoid the case where Qt apps are killed while they are cleaning up. Task: QTBUG-14858 Reviewed-by: Jani Hautakangas