[Development] Changed enum property behaviour in Qt v6.8

[Fabian Kosmale]

Hi Phil,

I'm not quite sure which change caused the issue, and I believe a 
bugreport with a reproducer might shed some light on the issue.

Nevertheless, if you're already using the private QMetaObjectBuilder 
API, I would expect that it should work if you build the enum also 
dynamically via addEnumerator and then working with the returned 
QMetaEnumBuilder.

Kind regards,
Fabian

On 03.10.24 17:52, Phil Thompson via Development wrote:
> On 03/10/2024 16:31, Volker Hilsheimer wrote:
>>> On 3 Oct 2024, at 17:07, Phil Thompson via Development 
>>> <development at qt-project.org> wrote:
>>>
>>> On 03/10/2024 15:44, Thiago Macieira wrote:
>>>> On Thursday 3 October 2024 05:06:08 GMT-7 Phil Thompson via 
>>>> Development wrote:
>>>>> Yes, that's the change - commenting out the new test fixes the 
>>>>> problem.
>>>>> I am dynamically building the meta-object. You don't really build an
>>>>> enum, you just provide a description of it to the meta-object. It 
>>>>> would
>>>>> be nice to be able to register an enum with the meta-type system
>>>>> dynamically.
>>>> Or you can set the EnumOrFlag flag in the QMetaProperty flags field to
>>>> force the
>>>> constructor to search.
>>>
>>> Sorry, can you be more specific? I can't see how to do it given the 
>>> private nature of the flags.
>>>
>>> Phil
>>
>>
>> Hey Phil,
>>
>> How do you generate a dynamic meta object without using private APIs?
>> Do you use QMetaObjectBuilder (which is private), or do you generate
>> the tables and arrays by hand?
>>
>> If you use QMetaObjectBuilder, then
>> QMetaPropertyBuilder::setEnumOrFlag would be the way to go.
>>
>> Volker
> 
> I'm using QMetaObjectBuilder and already calling setEnumOrFlag, so that 
> doesn't seem to solve the problem.
> 
> An alternative that would work for me would be to bypass the new test if 
> the meta-type was invalid (ie. the enum wasn't registered) but I don't 
> know if that would nullify the purpose of the new test.
> 
> Phil

-- 
Fabian Kosmale
Manager R&D

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