Am 10.05.2021 um 10:04 schrieb Fabian Kosmale:
Regarding the API: I think the most common pattern in Qt would be to
add a static get method to the private class.
@Arno: But would that accessor actually be enough for you? As in, do
you know in your case that the QVariant contains a QFuture? If you
get a generic QVariant instead, you may still need a way to detect
that the contained type is in fact a QFuture (though QMetaType::name
might be enough in that case).
Yep, I was thinking of just checking QMetaType::name().
Still, getting this right without relying on UB will be more work than I
expected.
Suppose the QVariant contains a QFuture<int>. How would I generically
extract the QFuture<T> to then call QFuturePrivate::get() on it?
One way to possibly be to convert this unconditionally to a
QFuture<void>, but then QVariant needs to generically know about QFuture
conversion operators/constructors. All doable, but this is going to be
my first "deep dive" into QtCore internals :-)
Regards,
Arno
--
Arno Rehn
Tel +49 89 189 166 0
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a.r...@menlosystems.com
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