[Interest] SingletonType functions not visible in QML

[Dmitry Volosnykh]

Example is fine.

On Fri, May 22, 2015 at 6:00 PM, rpzrpzrpz at gmail.com <rpzrpzrpz at 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.volosnykh at 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.stirtzel at googlemail.com>
> >> wrote:
> >>>
> >>> 2015-05-22 15:56 GMT+02:00 mark diener <rpzrpzrpz at 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();
> >>>
> >
> >
>
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