QChildEvent Class
The QChildEvent class contains event parameters for child object events. More...
| Header: | #include <QChildEvent> |
| qmake: | QT += core |
| Inherits: | QEvent |
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.