[Interest] Subclassing QQmlComponent for use in QML

Gian Maxera gmaxera at gmail.com
Fri Jun 19 12:49:32 CEST 2015

Not sure want you need.
If you just need to create your objects from QML, it’s not mandatory to extend from QQmlComponent but from QObject.

So, if you create a C++ class derived from QObject called:
class MyNewQML : public QObject 

and you register is with qmlRegisterType

you can write into QML:

MyNewQML {


> On 19 Jun 2015, at 11:44, Evgeny Grablyk <evgeny.grablyk at gmail.com> wrote:
> Hello,
> I need a subclass of QQmlComponent that would be usable inside QML
> documents just like a normal Component, in order to have more control
> over the return value of create().
> However, simply creating a subclass in C++ and registering it via
> qmlRegisterType() fails: attempting to use the custom component
> results in "Cannot assign to non-existent default property" error.
> I've failed to find any documentation or examples on the topic. Should
> this be possible from user code at all? If so, what is the correct way
> to subclass a QQmlComponent?
> Thanks.
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