QChildEvent Class

The QChildEvent class contains event parameters for child object events. More...

Header:	#include <QChildEvent>
CMake:	find_package(Qt6 COMPONENTS Core REQUIRED) target_link_libraries(mytarget PRIVATE Qt6::Core)
qmake:	QT += core
Inherits:	QEvent

• List of all members, including inherited members

Public Functions

	QChildEvent(QEvent::Type type, QObject *child)
bool	added() const
QObject *	child() const
bool	polished() const
bool	removed() const

Detailed Description

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().

Member Function Documentation

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

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

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

See also child().

bool QChildEvent::added() const

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

QObject *QChildEvent::child() const

Returns the child object that was added or removed.

bool QChildEvent::polished() const

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

bool QChildEvent::removed() const

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