Thread 1 (Thread 0x7fc9fa8a9740 (LWP 32404)):
#0  EventFilter::eventFilter (this=0x22cb640, o=0x2302b30, e=0x7fff7c4b4cb0) at main.cpp:25
        n = 2
        t = QEvent::FocusIn
        __PRETTY_FUNCTION__ = "virtual bool EventFilter::eventFilter(QObject*, QEvent*)"
#1  0x00007fc9f97f8456 in QCoreApplicationPrivate::sendThroughApplicationEventFilters (this=0x227dea0, receiver=0x2302b30, event=0x7fff7c4b4cb0) at kernel/qcoreapplication.cpp:1012
        obj = 0x22cb640
        i = 1
        __PRETTY_FUNCTION__ = "bool QCoreApplicationPrivate::sendThroughApplicationEventFilters(QObject*, QEvent*)"
#2  0x00007fc9f9e70ae2 in QApplicationPrivate::notify_helper (this=0x227dea0, receiver=0x2302b30, e=0x7fff7c4b4cb0) at kernel/qapplication.cpp:3466
        consumed = false
#3  0x00007fc9f9e70a97 in QApplication::notify (this=0x7fff7c4b6a50, receiver=0x2302b30, e=0x7fff7c4b4cb0) at kernel/qapplication.cpp:3456
        d = 0x227dea0
        __PRETTY_FUNCTION__ = "virtual bool QApplication::notify(QObject*, QEvent*)"
        res = false
#4  0x00007fc9f97f8254 in QCoreApplication::notifyInternal (this=0x7fff7c4b6a50, receiver=0x2302b30, event=0x7fff7c4b4cb0) at kernel/qcoreapplication.cpp:935
        threadData = 0x227e000
        loopLevelCounter = {threadData = 0x227e000}
        result = false
        cbdata = {0x2302b30, 0x7fff7c4b4cb0, 0x7fff7c4b4c5f}
        d = 0x2379680
#5  0x00007fc9f9e63065 in QCoreApplication::sendEvent (receiver=0x2302b30, event=0x7fff7c4b4cb0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:237
No locals.
#6  0x00007fc9f9e6ab3b in QApplicationPrivate::setFocusWidget (focus=0x2302b30, reason=Qt::OtherFocusReason) at kernel/qapplication.cpp:1701
        in = {<QEvent> = {_vptr.QEvent = 0x7fc9f8bce850, static staticMetaObject = {d = {superdata = 0x0, stringdata = 0x7fc9f9cf4b60, data = 0x7fc9f99e7f20, static_metacall = 0, relatedMetaObjects = 0x0, extradata = 0x0}}, d = 0x0, t = 8, posted = 0, spont = 0, m_accept = 1, reserved = 3977}, m_reason = Qt::OtherFocusReason}
        that = {wp = {d = 0x236a090, value = 0x2302b30}}
        prev = 0x2366b70
#7  0x00007fc9f9eb6932 in QWidget::setFocus (this=0x2302b30, reason=Qt::OtherFocusReason) at kernel/qwidget.cpp:5998
        prev = 0x2366b70
        f = 0x2302b30
        previousProxyFocus = 0x0
#8  0x00007fc9f9ea2d09 in QWidget::setFocus (this=0x2302b30) at ../../include/QtWidgets/../../src/widgets/kernel/qwidget.h:410
No locals.
#9  0x00007fc9fa028a3a in QMdiSubWindowPrivate::setFocusWidget (this=0x23bd050) at widgets/qmdisubwindow.cpp:2041

FocusReason = 0 (MouseFocusReason)

        q = 0x2366b70
        focusWidget = 0x2302b30
#10 0x00007fc9fa024060 in QMdiSubWindowPrivate::_q_processFocusChanged (this=0x23bd050, old=0x236a100, now=0x2366b70) at widgets/qmdisubwindow.cpp:967
        q = 0x2366b70
#11 0x00007fc9fa02e93e in QMdiSubWindow::qt_static_metacall (_o=0x2366b70, _c=QMetaObject::InvokeMetaMethod, _id=6, _a=0x7fff7c4b5030) at .moc/moc_qmdisubwindow.cpp:111
        _t = 0x2366b70
#12 0x00007fc9f983b4a2 in QMetaObject::activate (sender=0x7fff7c4b6a50, signalOffset=16, local_signal_index=0, argv=0x7fff7c4b5030) at kernel/qobject.cpp:3680
        receiverInSameThread = true
        sw = {receiver = 0x2366b70, previousSender = 0x0, currentSender = {sender = 0x7fff7c4b6a50, signal = 16, ref = 1}, switched = true}
        callFunction = 0x7fc9fa02e81e <QMdiSubWindow::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>
        receiver = 0x2366b70
        method_relative = 6
        c = 0x235f6e0
        last = 0x23ea5c0
        locker = {val = 140505456281376}
        connectionLists = {connectionLists = 0x22d1cf0}
        list = 0x23834e8
        signal_index = 16
        empty_argv = {0x0}
        currentThreadId = 0x7fc9fa8a9740
        __PRETTY_FUNCTION__ = "static void QMetaObject::activate(QObject*, int, int, void**)"
#13 0x00007fc9f983adc4 in QMetaObject::activate (sender=0x7fff7c4b6a50, m=0x7fc9fa668480, local_signal_index=0, argv=0x7fff7c4b5030) at kernel/qobject.cpp:3546
No locals.
#14 0x00007fc9f9e726a9 in QApplication::focusChanged (this=0x7fff7c4b6a50, _t1=0x236a100, _t2=0x2366b70) at .moc/moc_qapplication.cpp:229
        _a = {0x0, 0x7fff7c4b5020, 0x7fff7c4b5018}
#15 0x00007fc9f9e6abad in QApplicationPrivate::setFocusWidget (focus=0x2366b70, reason=Qt::MouseFocusReason) at kernel/qapplication.cpp:1705
        prev = 0x236a100
#16 0x00007fc9f9eb6932 in QWidget::setFocus (this=0x2366b70, reason=Qt::MouseFocusReason) at kernel/qwidget.cpp:5998
        prev = 0x236a100
        f = 0x2366b70
        previousProxyFocus = 0x0
#17 0x00007fc9f9e70e5a in QApplicationPrivate::giveFocusAccordingToFocusPolicy (widget=0x2366b70, event=0x7fff7c4b5a80, localPos=...) at kernel/qapplication.cpp:3782
        f = 0x17c4b6550
        setFocusOnRelease = false
        focusPolicy = Qt::ClickFocus
        focusWidget = 0x2366b70
#18 0x00007fc9f9e6e6d8 in QApplication::notify (this=0x7fff7c4b6a50, receiver=0x2366b70, e=0x7fff7c4b5a80) at kernel/qapplication.cpp:3012
        w = 0x2366b70
        mouse = 0x7fff7c4b5a80
        eventAccepted = false
        relpos = {xp = 74, yp = 13}
        pw = {wp = {d = 0x2371c60, value = 0x2366b70}}
        d = 0x227dea0
        __PRETTY_FUNCTION__ = "virtual bool QApplication::notify(QObject*, QEvent*)"
        res = false
#19 0x00007fc9f97f8254 in QCoreApplication::notifyInternal (this=0x7fff7c4b6a50, receiver=0x2366b70, event=0x7fff7c4b5a80) at kernel/qcoreapplication.cpp:935
        threadData = 0x227e000
        loopLevelCounter = {threadData = 0x227e000}
        result = false
        cbdata = {0x2366b70, 0x7fff7c4b5a80, 0x7fff7c4b586f}
        d = 0x23bd050
#20 0x00007fc9f9e72e33 in QCoreApplication::sendSpontaneousEvent (receiver=0x2366b70, event=0x7fff7c4b5a80) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:240
No locals.
#21 0x00007fc9f9e6d529 in QApplicationPrivate::sendMouseEvent (receiver=0x2366b70, event=0x7fff7c4b5a80, alienWidget=0x2366b70, nativeWidget=0x7fff7c4b6a10, buttonDown=0x7fc9fa6b0a00, lastMouseReceiver=..., spontaneous=true) at kernel/qapplication.cpp:2531
        alienGuard = {wp = {d = 0x2371c60, value = 0x2366b70}}
        receiverGuard = {wp = {d = 0x2371c60, value = 0x2366b70}}
        nativeGuard = {wp = {d = 0x237f920, value = 0x7fff7c4b6a10}}
        activePopupWidget = {wp = {d = 0x0, value = 0x0}}
        graphicsWidget = false
        widgetUnderMouse = true
        wasLeaveAfterRelease = true
        result = 255
#22 0x00007fc9f9ee8632 in QWidgetWindow::handleMouseEvent (this=0x22d6a90, event=0x7fff7c4b6510) at kernel/qwidgetwindow.cpp:505
        translated = {<QInputEvent> = {<QEvent> = {_vptr.QEvent = 0x7fc9f8bce8d0, static staticMetaObject = {d = {superdata = 0x0, stringdata = 0x7fc9f9cf4b60, data = 0x7fc9f99e7f20, static_metacall = 0, relatedMetaObjects = 0x0, extradata = 0x0}}, d = 0x0, t = 2, posted = 0, spont = 1, m_accept = 1, reserved = 0}, modState = {i = 0}, ts = 13132667}, l = {xp = 74, yp = 13}, w = {xp = 74, yp = 33}, s = {xp = 76, yp = 56}, b = Qt::LeftButton, mouseState = {i = 1}, caps = 0, velocity = {xp = 0, yp = 0}}
        contextMenuTrigger = QEvent::MouseButtonPress
        widget = 0x2366b70
        mapped = {xp = 74, yp = 13}
        receiver = 0x2366b70
#23 0x00007fc9f9ee7493 in QWidgetWindow::event (this=0x22d6a90, event=0x7fff7c4b6510) at kernel/qwidgetwindow.cpp:179
No locals.
#24 0x00007fc9f9e70c32 in QApplicationPrivate::notify_helper (this=0x227dea0, receiver=0x22d6a90, e=0x7fff7c4b6510) at kernel/qapplication.cpp:3491
        consumed = false
#25 0x00007fc9f9e6e40b in QApplication::notify (this=0x7fff7c4b6a50, receiver=0x22d6a90, e=0x7fff7c4b6510) at kernel/qapplication.cpp:2944
        d = 0x227dea0
        __PRETTY_FUNCTION__ = "virtual bool QApplication::notify(QObject*, QEvent*)"
        res = false
#26 0x00007fc9f97f8254 in QCoreApplication::notifyInternal (this=0x7fff7c4b6a50, receiver=0x22d6a90, event=0x7fff7c4b6510) at kernel/qcoreapplication.cpp:935
        threadData = 0x227e000
        loopLevelCounter = {threadData = 0x227e000}
        result = false
        cbdata = {0x22d6a90, 0x7fff7c4b6510, 0x7fff7c4b647f}
        d = 0x22d7dc0
#27 0x00007fc9f84a9be7 in QCoreApplication::sendSpontaneousEvent (receiver=0x22d6a90, event=0x7fff7c4b6510) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:240
No locals.
#28 0x00007fc9f84a37a8 in QGuiApplicationPrivate::processMouseEvent (e=0x23eb170) at kernel/qguiapplication.cpp:1701
        type = QEvent::MouseButtonPress
        stateChange = {i = 1}
        window = 0x22d6a90
        globalPoint = {xp = 76, yp = 56}
        button = Qt::LeftButton
        doubleClick = false
        localPoint = {xp = 74, yp = 33}
        frameStrut = false
        ev = {<QInputEvent> = {<QEvent> = {_vptr.QEvent = 0x7fc9f8bce8d0, static staticMetaObject = {d = {superdata = 0x0, stringdata = 0x7fc9f9cf4b60, data = 0x7fc9f99e7f20, static_metacall = 0, relatedMetaObjects = 0x0, extradata = 0x0}}, d = 0x0, t = 2, posted = 0, spont = 1, m_accept = 1, reserved = 69}, modState = {i = 0}, ts = 13132667}, l = {xp = 74, yp = 33}, w = {xp = 74, yp = 33}, s = {xp = 76, yp = 56}, b = Qt::LeftButton, mouseState = {i = 1}, caps = 0, velocity = {xp = 0, yp = 0}}
#29 0x00007fc9f84a2e06 in QGuiApplicationPrivate::processWindowSystemEvent (e=0x23eb170) at kernel/qguiapplication.cpp:1502
        __PRETTY_FUNCTION__ = "static void QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*)"
#30 0x00007fc9f848d01d in QWindowSystemInterface::sendWindowSystemEvents (flags=...) at kernel/qwindowsysteminterface.cpp:579
        event = 0x23eb170
        nevents = 2
#31 0x00007fc9f3aef713 in QUnixEventDispatcherQPA::processEvents (this=0x22a8260, flags=...) at eventdispatchers/qunixeventdispatcher.cpp:71
        didSendEvents = true
#32 0x00007fc9f97f4df4 in QEventLoop::processEvents (this=0x7fff7c4b6990, flags=...) at kernel/qeventloop.cpp:136
        d = 0x23865b0
#33 0x00007fc9f97f50cd in QEventLoop::exec (this=0x7fff7c4b6990, flags=...) at kernel/qeventloop.cpp:212
        locker = {val = 36167920}
        __PRETTY_FUNCTION__ = "int QEventLoop::exec(QEventLoop::ProcessEventsFlags)"
        ref = {d = 0x23865b0, locker = @0x7fff7c4b68f0, exceptionCaught = true}
        app = 0x7fff7c4b6a50
        d = 0x23865b0
#34 0x00007fc9f97f891d in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1188
        threadData = 0x227e000
        __PRETTY_FUNCTION__ = "static int QCoreApplication::exec()"
        eventLoop = {<QObject> = {_vptr.QObject = 0x7fc9f9cdc4d0, static staticMetaObject = {d = {superdata = 0x0, stringdata = 0x7fc9f9ce3140, data = 0x7fc9f9995fc0, static_metacall = 0x7fc9f983dc02 <QObject::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>, relatedMetaObjects = 0x0, extradata = 0x0}}, d_ptr = {d = 0x23865b0}, static staticQtMetaObject = {d = {superdata = 0x0, stringdata = 0x7fc9f9ce3b60, data = 0x7fc9f99e2100, static_metacall = 0, relatedMetaObjects = 0x0, extradata = 0x0}}}, static staticMetaObject = {d = {superdata = 0x7fc9f9cd8da0, stringdata = 0x7fc9f9cf48e0, data = 0x7fc9f99e7ca0, static_metacall = 0x7fc9f98c9e18 <QEventLoop::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>, relatedMetaObjects = 0x0, extradata = 0x0}}}
        returnCode = 0
#35 0x00007fc9f84a2baa in QGuiApplication::exec () at kernel/qguiapplication.cpp:1436
No locals.
#36 0x00007fc9f9e6dc47 in QApplication::exec () at kernel/qapplication.cpp:2736
No locals.
#37 0x00000000004048dc in main (argc=1, argv=0x7fff7c4b6b88) at main.cpp:117
        a = {<QGuiApplication> = {<QCoreApplication> = {<QObject> = {_vptr.QObject = 0x7fc9fa6684d0, static staticMetaObject = {d = {superdata = 0x0, stringdata = 0x7fc9f9ce3140, data = 0x7fc9f9995fc0, static_metacall = 0x7fc9f983dc02 <QObject::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>, relatedMetaObjects = 0x0, extradata = 0x0}}, d_ptr = {d = 0x227dea0}, static staticQtMetaObject = {d = {superdata = 0x0, stringdata = 0x7fc9f9ce3b60, data = 0x7fc9f99e2100, static_metacall = 0, relatedMetaObjects = 0x0, extradata = 0x0}}}, static staticMetaObject = {d = {superdata = 0x7fc9f9cd8da0, stringdata = 0x7fc9f9cf4940, data = 0x7fc9f99e7dc0, static_metacall = 0x7fc9f98c9f70 <QCoreApplication::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>, relatedMetaObjects = 0x0, extradata = 0x0}}, static self = 0x7fff7c4b6a50}, static staticMetaObject = {d = {superdata = 0x7fc9f9cdc560, stringdata = 0x7fc9f8bdaa20, data = 0x7fc9f88877a0, static_metacall = 0x7fc9f84a8b88 <QGuiApplication::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>, relatedMetaObjects = 0x0, extradata = 0x0}}}, static staticMetaObject = {d = {superdata = 0x7fc9f8bcdf00, stringdata = 0x7fc9fa694840, data = 0x7fc9fa2bba60, static_metacall = 0x7fc9f9e72148 <QApplication::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>, relatedMetaObjects = 0x0, extradata = 0x0}}}
        args = {<QList<QString>> = {{p = {static shared_null = {ref = {atomic = {_q_value = -1}}, alloc = 0, begin = 0, end = 0, array = {0x0}}, d = 0x229ed90}, d = 0x229ed90}}, <No data fields>}
        m = {<QMainWindow> = {<QWidget> = {<QObject> = {_vptr.QObject = 0x6078f0, static staticMetaObject = {d = {superdata = 0x0, stringdata = 0x7fc9f9ce3140, data = 0x7fc9f9995fc0, static_metacall = 0x7fc9f983dc02 <QObject::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>, relatedMetaObjects = 0x0, extradata = 0x0}}, d_ptr = {d = 0x22ac9e0}, static staticQtMetaObject = {d = {superdata = 0x0, stringdata = 0x7fc9f9ce3b60, data = 0x7fc9f99e2100, static_metacall = 0, relatedMetaObjects = 0x0, extradata = 0x0}}}, <QPaintDevice> = {_vptr.QPaintDevice = 0x607aa8, painters = 0, reserved = 0x0}, static staticMetaObject = {d = {superdata = 0x7fc9f9cd8da0, stringdata = 0x7fc9fa694d00, data = 0x7fc9fa2c1680, static_metacall = 0x7fc9f9ec255a <QWidget::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>, relatedMetaObjects = 0x0, extradata = 0x0}}, data = 0x22acb10}, static staticMetaObject = {d = {superdata = 0x7fc9fa669160, stringdata = 0x7fc9fa6ac320, data = 0x7fc9fa363dc0, static_metacall = 0x7fc9fa2aee94 <QMainWindow::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>, relatedMetaObjects = 0x7fc9fa687450, extradata = 0x0}}}, static staticMetaObject = {d = {superdata = 0x7fc9fa687420, stringdata = 0x405b40, data = 0x405bc0, static_metacall = 0x404984 <MyMainWindow::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>, relatedMetaObjects = 0x0, extradata = 0x0}}, number = 2}