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| -rw-r--r-- | src/corelib/kernel/qproperty.cpp | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/src/corelib/kernel/qproperty.cpp b/src/corelib/kernel/qproperty.cpp index 482ed3bf35..a635cb8afc 100644 --- a/src/corelib/kernel/qproperty.cpp +++ b/src/corelib/kernel/qproperty.cpp @@ -1175,6 +1175,17 @@ QString QPropertyBindingError::description() const dynamically, the binding expression. It is represented as a C++ lambda and can be used to express relationships between different properties in your application. + + \note In the case of QML it is important that \l QProperty needs to be exposed + in \l Q_PROPERTY with the BINDABLE keyword. As a result the QML engine, uses it + as the bindable interface to set up the property binding. In turn, the binding + can be then interacted with C++ via the normal API like: + + QProperty<T>::onValueChanged, QProperty::takeBinding and QBindable::hasBinding + + If the property is BINDABLE, then the engine will use the change-tracking + inherent to the C++ property system for getting notified about changes; and + won't rely on signals being emitted. */ /*! |