Unable to assign [Type] to [Type] in QML

yeehaw

Hello,

I have a QObject derived class MainViewModel. I register this class as follows Q_DECLARE_METATYPE(MainViewModel*);, inside a namespace named ViewModel.
I also register the type so I can use it explicitily in QML:
qmlRegisterUncreatableType<MainViewModel>(PROJECT_NAME, MAJOR_VERSION, MINOR_VERSION, "MainViewModel", UNCREATABLE_REASON);.

In QML:
readonly property MainViewModel model: _model // where _model is the propery passed to the QQmlEngineApplication.

In the QML output, I get a warning:
Unable to assign ViewModel::MainViewModel to ViewModel::MainViewModel.

When I change the assign type to var such as:
readonly property var model: _model

Everything works as intended.

Any idea on what's missing ?

thanks

sierdzio

Which Qt version? I think this should work in 5.15+

yeehaw

I'm using QT 5.15.2

riodoro

This post is deleted!

sierdzio

@riodoro said in Unable to assign [Type] to [Type] in QML:

hi,
you can use only basic types in qml object properties.

That's wrong. I'm using custom types since ages. As long as a type inherits from QObject, it can be used as property in QML.