The QPropertyChangeHandler class controls the lifecycle of change callback installed on a QProperty . 更多...
| 頭： | #include <QPropertyChangeHandler> |
| CMake: |
find_package(Qt6 REQUIRED COMPONENTS Core)
target_link_libraries(mytarget PRIVATE Qt6::Core) |
| qmake: | QT += core |
| 繼承： | QPropertyObserver |
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.
