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Internal/Contributor docs for the Qt SDK. <b>Note:</b> These are NOT official API docs; those are found <a href='https://doc.qt.io/'>here</a>.
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Public Member Functions | List of all members
QPropertyChangeHandler< Functor > Class Template Reference

\inmodule QtCore More...

#include <qproperty.h>

+ Inheritance diagram for QPropertyChangeHandler< Functor >:
+ Collaboration diagram for QPropertyChangeHandler< Functor >:

Public Member Functions

Q_NODISCARD_CTOR QPropertyChangeHandler (Functor handler)
 
template<typename Property , QtPrivate::IsUntypedPropertyData< Property > = true>
Q_NODISCARD_CTOR QPropertyChangeHandler (const Property &property, Functor handler)
 
- Public Member Functions inherited from QPropertyObserver
constexpr QPropertyObserver ()=default
 
 QPropertyObserver (QPropertyObserver &&other) noexcept
 
QPropertyObserver & operator= (QPropertyObserver &&other) noexcept
 
 ~QPropertyObserver ()
 
template<typename Property , QtPrivate::IsUntypedPropertyData< Property > = true>
void setSource (const Property &property)
 
void setSource (const QtPrivate::QPropertyBindingData &property)
 

Additional Inherited Members

- Public Types inherited from QPropertyObserverBase
enum  ObserverTag { ObserverNotifiesBinding , ObserverNotifiesChangeHandler , ObserverIsPlaceholder }
 
- Protected Types inherited from QPropertyObserverBase
using ChangeHandler = void (*)(QPropertyObserver*, QUntypedPropertyData *)
 
- Protected Member Functions inherited from QPropertyObserver
 QPropertyObserver (ChangeHandler changeHandler)
 
QUntypedPropertyData * aliasedProperty () const
 

Detailed Description

template<typename Functor>
class QPropertyChangeHandler< Functor >

\inmodule QtCore

The QPropertyChangeHandler class controls the lifecycle of change callback installed on a QProperty.

QPropertyChangeHandler<Functor> is created when registering a callback on a QProperty to listen to changes to the property's value, using QProperty::onValueChanged and QProperty::subscribe. As long as the change handler is alive, the callback remains installed.

A handler instance can be transferred between C++ scopes using move semantics.

Definition at line 291 of file qproperty.h.

Constructor & Destructor Documentation

◆ QPropertyChangeHandler() [1/2]

template<typename Functor >
Q_NODISCARD_CTOR QPropertyChangeHandler< Functor >::QPropertyChangeHandler ( Functor handler)
inline

Definition at line 296 of file qproperty.h.

◆ QPropertyChangeHandler() [2/2]

template<typename Functor >
template<typename Property , QtPrivate::IsUntypedPropertyData< Property > = true>
Q_NODISCARD_CTOR QPropertyChangeHandler< Functor >::QPropertyChangeHandler ( const Property & property,
Functor handler )
inline

Definition at line 307 of file qproperty.h.

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