Hi Arno, You could use the QFutureInterfaceBase (non-templated) class directly to build a type-erased future, that's basically what QFuture is using underneath. Although it's internal (not documented and is considered to be private), but it's declared in a public header (qfutureinterface.h) and you can still use it. QFutureInterfaceBase's methods for accessing its internals are public (with a few exceptions that you probably won't need to use). I hope that helps.
Best regards, Sona > -----Original Message----- > From: Development <development-boun...@qt-project.org> On Behalf Of > Arno Rehn > Sent: Friday, May 7, 2021 4:07 PM > To: Qt development mailing list <development@qt-project.org> > Subject: [Development] QMetaType support for QFuture > > Hey everyone, > > I'm currently working on making QFuture return types work transparently in > QtWebChannel. For remote clients, method return values are received > asynchronously via callbacks anyway. > > However, QFuture introspection is not supported by the meta-type (yet) and > there's no other way to register a generic QVariant-based continuation for > "any" QFuture. All implementation details are private or protected and only > some friend classes have access. > > I was wondering if I should add a local "workaround" to QWebChannel only > (like QWebChannel::registerFutureType<int>() to support QFuture<int>) or > if I should push something more general to QtCore. Maybe just some > additional private API that supports the necessary private member access? > > Looking forward to some feedback. > > Regards, > Arno > > -- > Arno Rehn > Tel +49 89 189 166 0 > Fax +49 89 189 166 111 > a.r...@menlosystems.com > www.menlosystems.com > > Menlo Systems GmbH > Bunsenstrasse 5, D-82152 Martinsried, Germany Amtsgericht München HRB > 138145 > Geschäftsführung: Dr. Michael Mei, Dr. Ronald Holzwarth USt.-IdNr. > DE217772017, St.-Nr. 14316170324 > _______________________________________________ > Development mailing list > Development@qt-project.org > https://lists.qt-project.org/listinfo/development _______________________________________________ Development mailing list Development@qt-project.org https://lists.qt-project.org/listinfo/development
