#include <qeventdispatcher_win_p.h>

Inheritance diagram for QEventDispatcherWin32:

Collaboration diagram for QEventDispatcherWin32:

Public Member Functions
	QEventDispatcherWin32 (QObject *parent=nullptr)

	~QEventDispatcherWin32 ()

bool QT_ENSURE_STACK_ALIGNED_FOR_SSE	processEvents (QEventLoop::ProcessEventsFlags flags) override
	Processes pending events that match flags until there are no more events to process.

void	registerSocketNotifier (QSocketNotifier *notifier) override
	Registers notifier with the event loop.

void	unregisterSocketNotifier (QSocketNotifier *notifier) override
	Unregisters notifier from the event dispatcher.

void	registerTimer (int timerId, qint64 interval, Qt::TimerType timerType, QObject *object) override

bool	unregisterTimer (int timerId) override

bool	unregisterTimers (QObject *object) override
	Unregisters all the timers associated with the given object.

QList< TimerInfo >	registeredTimers (QObject *object) const override

int	remainingTime (int timerId) override

void	wakeUp () override
	\threadsafe

void	interrupt () override
	Interrupts event dispatching.

void	startingUp () override

void	closingDown () override

bool	event (QEvent *e) override
	This virtual function receives events to an object and should return true if the event e was recognized and processed.

HWND	internalHwnd ()

Public Member Functions inherited from QAbstractEventDispatcher
	QAbstractEventDispatcher (QObject *parent=nullptr)
	Constructs a new event dispatcher with the given parent.

	~QAbstractEventDispatcher ()
	Destroys the event dispatcher.

Qt::TimerId	registerTimer (Duration interval, Qt::TimerType timerType, QObject *object)

virtual void	registerTimer (Qt::TimerId timerId, Duration interval, Qt::TimerType timerType, QObject *object)=0

virtual bool	unregisterTimer (Qt::TimerId timerId)=0

virtual QList< TimerInfoV2 >	timersForObject (QObject *object) const =0

virtual Duration	remainingTime (Qt::TimerId timerId) const =0
	Returns the remaining time of the timer with the given timerId.

void	installNativeEventFilter (QAbstractNativeEventFilter *filterObj)
	\variable QAbstractEventDispatcher::TimerInfoV2::timerId

void	removeNativeEventFilter (QAbstractNativeEventFilter *filterObj)
	Removes the event filter filter from this object.

bool	filterNativeEvent (const QByteArray &eventType, void message, qintptr result)
	Sends message through the event filters that were set by installNativeEventFilter().

Public Member Functions inherited from QObject
Q_INVOKABLE	QObject (QObject *parent=nullptr)
	Constructs an object with parent object parent.

virtual	~QObject ()
	Destroys the object, deleting all its child objects.

virtual bool	eventFilter (QObject watched, QEvent event)
	Filters events if this object has been installed as an event filter for the watched object.

QString	objectName () const

Q_WEAK_OVERLOAD void	setObjectName (const QString &name)
	Sets the object's name to name.

void	setObjectName (QAnyStringView name)
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

QBindable< QString >	bindableObjectName ()

bool	isWidgetType () const
	Returns `true` if the object is a widget; otherwise returns `false`.

bool	isWindowType () const
	Returns `true` if the object is a window; otherwise returns `false`.

bool	isQuickItemType () const
	Returns `true` if the object is a QQuickItem; otherwise returns `false`.

bool	signalsBlocked () const noexcept
	Returns `true` if signals are blocked; otherwise returns `false`.

bool	blockSignals (bool b) noexcept
	If block is true, signals emitted by this object are blocked (i.e., emitting a signal will not invoke anything connected to it).

QThread *	thread () const
	Returns the thread in which the object lives.

bool	moveToThread (QThread *thread QT6_DECL_NEW_OVERLOAD_TAIL)
	Changes the thread affinity for this object and its children and returns `true` on success.

int	startTimer (int interval, Qt::TimerType timerType=Qt::CoarseTimer)
	This is an overloaded function that will start a timer of type timerType and a timeout of interval milliseconds.

int	startTimer (std::chrono::nanoseconds time, Qt::TimerType timerType=Qt::CoarseTimer)

void	killTimer (int id)
	Kills the timer with timer identifier, id.

void	killTimer (Qt::TimerId id)

template<typename T >
T	findChild (QAnyStringView aName, Qt::FindChildOptions options=Qt::FindChildrenRecursively) const
	Returns the child of this object that can be cast into type T and that is called name, or \nullptr if there is no such object.

template<typename T >
QList< T >	findChildren (QAnyStringView aName, Qt::FindChildOptions options=Qt::FindChildrenRecursively) const
	Returns all children of this object with the given name that can be cast to type T, or an empty list if there are no such objects.

template<typename T >
T	findChild (Qt::FindChildOptions options=Qt::FindChildrenRecursively) const
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

template<typename T >
QList< T >	findChildren (Qt::FindChildOptions options=Qt::FindChildrenRecursively) const
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

const QObjectList &	children () const
	Returns a list of child objects.

void	setParent (QObject *parent)
	Makes the object a child of parent.

void	installEventFilter (QObject *filterObj)
	Installs an event filter filterObj on this object.

void	removeEventFilter (QObject *obj)
	Removes an event filter object obj from this object.

QMetaObject::Connection	connect (const QObject sender, const char signal, const char *member, Qt::ConnectionType type=Qt::AutoConnection) const

bool	disconnect (const char signal=nullptr, const QObject receiver=nullptr, const char *member=nullptr) const

bool	disconnect (const QObject receiver, const char member=nullptr) const

void	dumpObjectTree () const
	Dumps a tree of children to the debug output.

void	dumpObjectInfo () const
	Dumps information about signal connections, etc.

bool	setProperty (const char *name, const QVariant &value)
	Sets the value of the object's name property to value.

bool	setProperty (const char *name, QVariant &&value)

QVariant	property (const char *name) const
	Returns the value of the object's name property.

QList< QByteArray >	dynamicPropertyNames () const

QBindingStorage *	bindingStorage ()

const QBindingStorage *	bindingStorage () const

QObject *	parent () const
	Returns a pointer to the parent object.

bool	inherits (const char *classname) const
	Returns `true` if this object is an instance of a class that inherits className or a QObject subclass that inherits className; otherwise returns `false`.

Protected Member Functions
	QEventDispatcherWin32 (QEventDispatcherWin32Private &dd, QObject *parent=nullptr)

virtual void	sendPostedEvents ()

void	doUnregisterSocketNotifier (QSocketNotifier *notifier)

Protected Member Functions inherited from QAbstractEventDispatcher
	QAbstractEventDispatcher (QAbstractEventDispatcherPrivate &, QObject *parent)

Protected Member Functions inherited from QObject
QObject *	sender () const
	Returns a pointer to the object that sent the signal, if called in a slot activated by a signal; otherwise it returns \nullptr.

int	senderSignalIndex () const

int	receivers (const char *signal) const
	Returns the number of receivers connected to the signal.

bool	isSignalConnected (const QMetaMethod &signal) const

virtual void	timerEvent (QTimerEvent *event)
	This event handler can be reimplemented in a subclass to receive timer events for the object.

virtual void	childEvent (QChildEvent *event)
	This event handler can be reimplemented in a subclass to receive child events.

virtual void	customEvent (QEvent *event)
	This event handler can be reimplemented in a subclass to receive custom events.

virtual void	connectNotify (const QMetaMethod &signal)

virtual void	disconnectNotify (const QMetaMethod &signal)

	QObject (QObjectPrivate &dd, QObject *parent=nullptr)

Friends
LRESULT QT_WIN_CALLBACK	qt_internal_proc (HWND hwnd, UINT message, WPARAM wp, LPARAM lp)

Additional Inherited Members
Public Types inherited from QAbstractEventDispatcher
using	Duration = std::chrono::nanoseconds
	A {std::chrono::duration} type that is used in various API in this class.

Public Slots inherited from QObject
void	deleteLater ()
	\threadsafe

Signals inherited from QAbstractEventDispatcher
void	aboutToBlock ()
	This signal is emitted before the event loop calls a function that could block.

void	awake ()
	This signal is emitted after the event loop returns from a function that could block.

Signals inherited from QObject
void	destroyed (QObject *=nullptr)
	This signal is emitted immediately before the object obj is destroyed, after any instances of QPointer have been notified, and cannot be blocked.

void	objectNameChanged (const QString &objectName, QPrivateSignal)
	This signal is emitted after the object's name has been changed.

Static Public Member Functions inherited from QAbstractEventDispatcher
static QAbstractEventDispatcher *	instance (QThread *thread=nullptr)
	Returns a pointer to the event dispatcher object for the specified thread.

Static Public Member Functions inherited from QObject
static QMetaObject::Connection	connect (const QObject sender, const char signal, const QObject receiver, const char member, Qt::ConnectionType=Qt::AutoConnection)
	\threadsafe

static QMetaObject::Connection	connect (const QObject sender, const QMetaMethod &signal, const QObject receiver, const QMetaMethod &method, Qt::ConnectionType type=Qt::AutoConnection)

template<typename Func1 , typename Func2 >
static QMetaObject::Connection	connect (const typename QtPrivate::FunctionPointer< Func1 >::Object sender, Func1 signal, const typename QtPrivate::ContextTypeForFunctor< Func2 >::ContextType context, Func2 &&slot, Qt::ConnectionType type=Qt::AutoConnection)

template<typename Func1 , typename Func2 >
static QMetaObject::Connection	connect (const typename QtPrivate::FunctionPointer< Func1 >::Object *sender, Func1 signal, Func2 &&slot)

static bool	disconnect (const QObject sender, const char signal, const QObject receiver, const char member)
	\threadsafe

static bool	disconnect (const QObject sender, const QMetaMethod &signal, const QObject receiver, const QMetaMethod &member)

static bool	disconnect (const QMetaObject::Connection &)
	Disconnect a connection.

template<typename Func1 , typename Func2 >
static bool	disconnect (const typename QtPrivate::FunctionPointer< Func1 >::Object sender, Func1 signal, const typename QtPrivate::FunctionPointer< Func2 >::Object receiver, Func2 slot)

template<typename Func1 >
static bool	disconnect (const typename QtPrivate::FunctionPointer< Func1 >::Object sender, Func1 signal, const QObject receiver, void **zero)

Protected Attributes inherited from QObject
QScopedPointer< QObjectData >	d_ptr

Properties inherited from QObject
QString	objectName
	the name of this object

Related Symbols inherited from QObject
template< class T > T	qobject_cast (const QObject *object)
	Returns the given object cast to type T if the object is of type T (or of a subclass); otherwise returns \nullptr.

template< typename T > T	qFindChildqFindChildren (const QObject *obj, const QString &name)()

template< typename T > QList< T >	qFindChildrenqFindChildren (const QObject *obj, const QString &name)()

	QObjectList
	\macro Q_CLASSINFO(Name, Value)

Detailed Description

Definition at line 32 of file qeventdispatcher_win_p.h.

Constructor & Destructor Documentation

◆ QEventDispatcherWin32() [1/2]

QEventDispatcherWin32::QEventDispatcherWin32 ( QObject * parent = nullptr )

explicit

Definition at line 425 of file qeventdispatcher_win.cpp.

◆ ~QEventDispatcherWin32()

QEventDispatcherWin32::~QEventDispatcherWin32 ( )

Definition at line 438 of file qeventdispatcher_win.cpp.

◆ QEventDispatcherWin32() [2/2]

QEventDispatcherWin32::QEventDispatcherWin32	(	QEventDispatcherWin32Private &	dd,
		QObject *	parent = nullptr )

protected

Definition at line 430 of file qeventdispatcher_win.cpp.

References d, and qt_create_internal_window().

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Member Function Documentation

◆ closingDown()

void QEventDispatcherWin32::closingDown ( )

overridevirtual

Reimplemented from QAbstractEventDispatcher.

Definition at line 827 of file qeventdispatcher_win.cpp.

References d, doUnregisterSocketNotifier(), and Q_ASSERT.

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◆ doUnregisterSocketNotifier()

void QEventDispatcherWin32::doUnregisterSocketNotifier ( QSocketNotifier * notifier )

protected

Definition at line 641 of file qeventdispatcher_win.cpp.

References d, QSet< T >::end(), QSockFd::event, QSet< T >::find(), it, QHash< qintptr, QSockFd >::iterator, notifier, Q_ASSERT, and QSockFd::selected.

Referenced by closingDown(), and unregisterSocketNotifier().

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◆ event()

bool QEventDispatcherWin32::event ( QEvent * e )

overridevirtual

This virtual function receives events to an object and should return true if the event e was recognized and processed.

The event() function can be reimplemented to customize the behavior of an object.

Make sure you call the parent event class implementation for all the events you did not handle.

Example:

class MyClass : public QWidget
{
    Q_OBJECT
 
public:
    MyClass(QWidget *parent = nullptr);
    ~MyClass();
 
    bool event(QEvent* ev) override
    {
        if (ev->type() == QEvent::PolishRequest) {
            // overwrite handling of PolishRequest if any
            doThings();
            return true;
        } else  if (ev->type() == QEvent::Show) {
            // complement handling of Show if any
            doThings2();
            QWidget::event(ev);
            return true;
        }
        // Make sure the rest of events are handled
        return QWidget::event(ev);
    }
};

See also: installEventFilter(), timerEvent(), QCoreApplication::sendEvent(), QCoreApplication::postEvent()

Reimplemented from QObject.

Definition at line 852 of file qeventdispatcher_win.cpp.

References d, QObject::event(), WinTimerInfo::inTimerEvent, QCoreApplication::postEvent(), QCoreApplication::sendEvent(), QEvent::Timer, QEvent::type(), and QEvent::ZeroTimerEvent.

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◆ internalHwnd()

HWND QEventDispatcherWin32::internalHwnd ( )

Definition at line 902 of file qeventdispatcher_win.cpp.

◆ interrupt()

void QEventDispatcherWin32::interrupt ( )

overridevirtual

Interrupts event dispatching.

The event dispatcher will return from processEvents() as soon as possible.

Implements QAbstractEventDispatcher.

Definition at line 817 of file qeventdispatcher_win.cpp.

References d, and wakeUp().

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◆ processEvents()

bool QEventDispatcherWin32::processEvents ( QEventLoop::ProcessEventsFlags flags )

overridevirtual

Processes pending events that match flags until there are no more events to process.

Returns true if an event was processed; otherwise returns false.

This function is especially useful if you have a long running operation, and want to show its progress without allowing user input by using the QEventLoop::ExcludeUserInputEvents flag.

If the QEventLoop::WaitForMoreEvents flag is set in flags, the behavior of this function is as follows:

\list

If events are available, this function returns after processing them.

If no events are available, this function will wait until more are available and return after processing newly available events.

\endlist

If the QEventLoop::WaitForMoreEvents flag is not set in flags, and no events are available, this function will return immediately.

{Note:} This function does not process events continuously; it returns after all available events are processed.

Implements QAbstractEventDispatcher.

Reimplemented in QWindowsGuiEventDispatcher.

Definition at line 458 of file qeventdispatcher_win.cpp.

References QAbstractEventDispatcher::aboutToBlock(), QAbstractEventDispatcher::awake(), d, emit, QEventLoop::ExcludeSocketNotifiers, QEventLoop::ExcludeUserInputEvents, QAbstractEventDispatcher::filterNativeEvent(), i, QCoreApplication::instance(), isUserInputMessage(), QByteArrayLiteral, sendPostedEvents(), QEventLoop::WaitForMoreEvents, WM_QT_SENDPOSTEDEVENTS, and WM_QT_SOCKETNOTIFIER.

Referenced by QWindowsGuiEventDispatcher::processEvents().

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◆ registeredTimers()

QList< QEventDispatcherWin32::TimerInfo > QEventDispatcherWin32::registeredTimers ( QObject * object ) const

override

Definition at line 762 of file qeventdispatcher_win.cpp.

References d, list, Q_ASSERT, and qWarning.

◆ registerSocketNotifier()

void QEventDispatcherWin32::registerSocketNotifier ( QSocketNotifier * notifier )

overridevirtual

Registers notifier with the event loop.

Note: processEvents() only processes events queued before the function is called. Events that are posted while the function runs will be queued until a later round of event processing. This only applies to posted Qt events. For timers and system level events, the situation is unknown.

Subclasses must implement this method to tie a socket notifier into another event loop.

Implements QAbstractEventDispatcher.

Definition at line 557 of file qeventdispatcher_win.cpp.

References QCoreApplication::closingDown(), QThread::currentThread(), d, QSet< T >::end(), QSockFd::event, QSockNot::fd, QSet< T >::find(), it, QHash< qintptr, QSockFd >::iterator, notifier, QSockNot::obj, PRIdQINTPTR, Q_ASSERT, qWarning, QSockFd::selected, and QObject::thread().

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◆ registerTimer()

void QEventDispatcherWin32::registerTimer	(	int	timerId,
		qint64	interval,
		Qt::TimerType	timerType,
		QObject *	object )

override

Definition at line 673 of file qeventdispatcher_win.cpp.

References QThread::currentThread(), d, WinTimerInfo::dispatcher, qWarning, and QObject::thread().

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◆ remainingTime()

int QEventDispatcherWin32::remainingTime ( int timerId )

override

Definition at line 781 of file qeventdispatcher_win.cpp.

References currentTime(), d, qt_msectime(), qWarning, and WinTimerInfo::timeout.

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◆ sendPostedEvents()

void QEventDispatcherWin32::sendPostedEvents ( )

protectedvirtual

Reimplemented in QWindowsGuiEventDispatcher.

Definition at line 888 of file qeventdispatcher_win.cpp.

References d, and QCoreApplicationPrivate::sendPostedEvents().

Referenced by processEvents(), and QWindowsGuiEventDispatcher::sendPostedEvents().

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◆ startingUp()

void QEventDispatcherWin32::startingUp ( )

overridevirtual

Reimplemented from QAbstractEventDispatcher.

Definition at line 824 of file qeventdispatcher_win.cpp.

◆ unregisterSocketNotifier()

void QEventDispatcherWin32::unregisterSocketNotifier ( QSocketNotifier * notifier )

overridevirtual

Unregisters notifier from the event dispatcher.

Subclasses must reimplement this method to tie a socket notifier into another event loop. Reimplementations must call the base implementation.

Implements QAbstractEventDispatcher.

Definition at line 624 of file qeventdispatcher_win.cpp.

References QThread::currentThread(), doUnregisterSocketNotifier(), notifier, Q_ASSERT, qWarning, and QObject::thread().

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◆ unregisterTimer()

bool QEventDispatcherWin32::unregisterTimer ( int timerId )

override

Definition at line 707 of file qeventdispatcher_win.cpp.

References QThread::currentThread(), d, qWarning, and QObject::thread().

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◆ unregisterTimers()

bool QEventDispatcherWin32::unregisterTimers ( QObject * object )

overridevirtual

Unregisters all the timers associated with the given object.

Returns true if all timers were successfully removed; otherwise returns false.

See also: unregisterTimer(), registeredTimers()

Implements QAbstractEventDispatcher.

Definition at line 730 of file qeventdispatcher_win.cpp.

References QSet< T >::begin(), QThread::currentThread(), d, QSet< T >::end(), QSet< T >::erase(), it, Q_ASSERT, qWarning, and QObject::thread().

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◆ wakeUp()

void QEventDispatcherWin32::wakeUp ( )

overridevirtual

\threadsafe

Wakes up the event loop.

\omit

FIXME - QTBUG-70229

On Unix and Glib event dispatchers, if the dispatcher is already awake when this function is called, it is ensured that the current iteration won't block waiting for more events, but will instead do another event loop iteration.

TODO - does other event dispatchers behave the same?

\endomit

See also: awake()

Implements QAbstractEventDispatcher.

Definition at line 807 of file qeventdispatcher_win.cpp.

References d, qErrnoWarning(), and WM_QT_SENDPOSTEDEVENTS.

Referenced by interrupt().

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Friends And Related Symbol Documentation

◆ qt_internal_proc

LRESULT QT_WIN_CALLBACK qt_internal_proc	(	HWND	hwnd,
		UINT	message,
		WPARAM	wp,
		LPARAM	lp )

friend

Definition at line 88 of file qeventdispatcher_win.cpp.

The documentation for this class was generated from the following files:

qtbase/src/corelib/kernel/qeventdispatcher_win_p.h (394602a80a205565f72de09a62c2ddb190f4fe89)
qtbase/src/corelib/kernel/qeventdispatcher_win.cpp (ac9e9687559df28dbd6bc9bb645006ff454e18bd)

Public Member Functions

Protected Member Functions

Friends

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ QEventDispatcherWin32() [1/2]

◆ ~QEventDispatcherWin32()

◆ QEventDispatcherWin32() [2/2]

Member Function Documentation

◆ closingDown()

◆ doUnregisterSocketNotifier()

◆ event()

◆ internalHwnd()

◆ interrupt()

◆ processEvents()

◆ registeredTimers()

◆ registerSocketNotifier()

◆ registerTimer()

◆ remainingTime()

◆ sendPostedEvents()

◆ startingUp()

◆ unregisterSocketNotifier()

◆ unregisterTimer()

◆ unregisterTimers()

◆ wakeUp()

FIXME - QTBUG-70229

TODO - does other event dispatchers behave the same?

Friends And Related Symbol Documentation

◆ qt_internal_proc