Example is fine. On Fri, May 22, 2015 at 6:00 PM, rpzrpz...@gmail.com <rpzrpz...@gmail.com> wrote:
> 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 >
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