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Add note about calling invokable functions from QML when returning QObjects

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Link to the data ownership section of the QML documentation to elaborate
on the special rules that apply for invokable functions that return
QObjects.

Change-Id: I41ea9089468c9505807cf1fde22be759b397a6d3
Reviewed-by: Mitch Curtis <mitch.curtis@qt.io>
Reviewed-by: Olivier Goffart (Woboq GmbH) <ogoffart@woboq.com>
This commit is contained in:
Simon Hausmann 2018-06-06 10:10:53 +02:00
parent ae42461f44
commit bf1f17364f
1 changed files with 5 additions and 0 deletions
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5
src/corelib/kernel/qobject.cpp
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@ -4533,6 +4533,11 @@ QDebug operator<<(QDebug dbg, const QObject *o)
invoked using QMetaObject::invokeMethod().
Since \c normalMethod() function is not registered in this way, it cannot
be invoked using QMetaObject::invokeMethod().
If an invokable member function returns a pointer to a QObject or a
subclass of QObject and it is invoked from QML, special ownership rules
apply. See \l{qtqml-cppintegration-data.html}{Data Type Conversion Between QML and C++}
for more information.
*/
/*!