[Interest] what are the requirements for QMetaType::metaObjectForType(QMetaType::type("QQuickLayout*")) to work?

[NIkolai Marchenko]

it seems like a forced initialization of a dummy layout
via component.beginCreate/completeCreate in case metaobject is null
works to register the layout metatype.

On Fri, May 3, 2024 at 7:24 PM NIkolai Marchenko <enmarantispam at gmail.com>
wrote:

> > That means it's relying on some automatic registration somewhere,
> somehow.
> > That's poor programming practice.
>
> The alternative was way,way worse. There's simply no way to avoid this
> reliance without refactoring the entirety of the codebase and it works
> perfectly well outside test scenarios.
> I just need to understand how to properly set up test environment for it.
>
> On Fri, May 3, 2024 at 7:21 PM Thiago Macieira <thiago.macieira at intel.com>
> wrote:
>
>> On Friday 3 May 2024 08:51:39 GMT-7 NIkolai Marchenko wrote:
>> > I am assuming the registration of qquicklayout is deferred somewhere
>> > but what are the exact timings and conditions?
>>
>> There's no explicit registration of this type, anywhere in the sources. I
>> don't even see anything that would be an automatic registration; maybe it
>> gets
>> put into a QVariant somewhere that my git grep didn't see.
>>
>> But one of the unit tests assumes it exists, like your code does:
>> https://code.qt.io/cgit/qt/qtdeclarative.git/tree/tests/auto/qml/
>> qmlcppcodegen/tst_qmlcppcodegen.cpp#n1646
>> <https://code.qt.io/cgit/qt/qtdeclarative.git/tree/tests/auto/qml/qmlcppcodegen/tst_qmlcppcodegen.cpp#n1646>
>>
>> That means it's relying on some automatic registration somewhere, somehow.
>>
>> That's poor programming practice.
>>
>> --
>> Thiago Macieira - thiago.macieira (AT) intel.com
>>   Principal Engineer - Intel DCAI Cloud Engineering
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>
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