QChildEvent Class Reference

#include <qcoreevent.h>

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Detailed Description

The QChildEvent class contains event parameters for child object events.

Child events are sent immediately to objects when children are added or removed.

In both cases you can only rely on the child being a QObject (or, if QObject::isWidgetType() returns true, a QWidget). This is because in the QEvent::ChildAdded case the child is not yet fully constructed; in the QEvent::ChildRemoved case it might have already been destructed.

The handler for these events is QObject::childEvent().

Definition at line 264 of file qcoreevent.h.

Public Member Functions
	QChildEvent (Type type, QObject *child)
	~QChildEvent ()
QObject *	child () const
bool	added () const
bool	polished () const
bool	removed () const
Protected Attributes
QObject *	c

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Constructor & Destructor Documentation

QChildEvent::QChildEvent	(	Type	type,
		QObject *	child
	)

Constructs a child event object of a particular type for the child.

type can be QEvent::ChildAdded, QEvent::ChildRemoved, QEvent::ChildPolished, or QEvent::ChildRemoved.

See also:

child()

Definition at line 362 of file qcoreevent.cpp.

    : QEvent(type), c(child)
{}

QChildEvent::~QChildEvent

(

)

Definition at line 368 of file qcoreevent.cpp.

{
}

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Member Function Documentation

QObject * QChildEvent::child

(

)

const [inline]

Returns the child object that was added or removed.

Definition at line 269 of file qcoreevent.h.

References c.

Referenced by Q3MainWindow::childEvent(), QWorkspaceChild::childEvent(), Q3WidgetStack::childEvent(), QWorkspace::childEvent(), Q3ActionGroup::childEvent(), QHideDock::childEvent(), and QtWindowListMenu::eventFilter().

{ return c; }

bool QChildEvent::added

(

)

const [inline]

Returns true if type() is QEvent::ChildAdded; otherwise returns false.

Definition at line 270 of file qcoreevent.h.

References QEvent::type().

{ return type() == ChildAdded; }

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bool QChildEvent::polished

(

)

const [inline]

Returns true if type() is QEvent::ChildPolished; otherwise returns false.

Definition at line 274 of file qcoreevent.h.

References QEvent::type().

{ return type() == ChildPolished; }

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bool QChildEvent::removed

(

)

const [inline]

Returns true if type() is QEvent::ChildRemoved; otherwise returns false.

Definition at line 275 of file qcoreevent.h.

References QEvent::type().

Referenced by Q3WidgetStack::childEvent(), QWorkspace::childEvent(), and Q3ActionGroup::childEvent().

{ return type() == ChildRemoved; }

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Member Data Documentation

QObject* QChildEvent::c [protected]

Definition at line 277 of file qcoreevent.h.

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

• src/corelib/kernel/qcoreevent.h
• src/corelib/kernel/qcoreevent.cpp

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