Hello: So do we need a static Sing* in the singleton provider or is the example in the documentation correct?
I would guess the provider is called ONCE by the QML engine and not multiple times, but I am usually mistaken. But I guess the static allocation will remove all doubt? Ben Lau -> Thank you Dmitry Volosnykh -> Thank you Mark On 5/22/2015 8:35 AM, Samuel Stirtzel wrote: > 2015-05-22 16:30 GMT+02:00 Dmitry Volosnykh <dmitry.volosn...@gmail.com>: >> Samuel, what you ask is explained here: >> http://doc.qt.io/qt-5/qqmlengine.html#qmlRegisterSingletonType-2 >> >> citation: >> >> NOTE: A QObject singleton type instance returned from a singleton type >> provider is owned by the QML engine. For this reason, the singleton type >> provider function should not be implemented as a singleton factory. >> > > Ah ok thanks, at the first glance this code looked quite malicious, > but reading the documentation sure helps ;) > >> On Fri, May 22, 2015 at 5:27 PM, Samuel Stirtzel <s.stirt...@googlemail.com> >> wrote: >>> >>> 2015-05-22 15:56 GMT+02:00 mark diener <rpzrpz...@gmail.com>: >>> >>>> static QObject *singprovider(QQmlEngine *gengine, QJSEngine >>>> *gscriptEngine) >>>> { >>>> Q_UNUSED(gengine) >>>> Q_UNUSED(gscriptEngine) >>>> Sing* gsing = new Sing(); >>>> return gsing; >>>> } >>> >>> Is the return value of the function cached in qt internally? >>> Or will this just create a new "singleton" with every call? >>> >>> how about this: >>> >>> static Sing* gsing = new Sing(); >>> > > -- No spell checkers were harmed during the creation of this message. _______________________________________________ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
