- Qt 6.6
- Qt Core
- C++ Classes
- QPropertyNotifier
- Qt 6.6.1 Reference Documentation

# QPropertyNotifier Class

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

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

## Detailed Description

QPropertyNotifier is created when registering a callback on a QProperty to listen to changes to the property's value, using QProperty::addNotifier. As long as the change handler is alive, the callback remains installed.

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