return Myclass to qml

[Samuel Costa]

what is the best practice to return MYClass that is created in a method?

[ODБOï]

@Samuel-Costa Hi,
http://doc.qt.io/qt-5/qtqml-cppintegration-contextproperties.html
http://doc.qt.io/qt-5/qtqml-cppintegration-topic.html

[VRonin]

While the links above are useful they only scratch the surface.
Could you be more specific regarding what kind an object is MYClass? is it basically only data? is it a QObject?

[Samuel Costa]

But I'm filling the object in a function, so I want to return that same object and receive it in javacript / QML.
But the object undergoes changes from the QML side after some calls to that function. In which I get the error: ASSERT: "! Create" in file ....

This line can only be called in main.cpp
ApplicationData data;
view.rootContext () -> setContextProperty ("applicationData", & data);

But my object was filled in function, so I can not use it.

Example of my class:

Help me

[VRonin]

@Samuel-Costa said in return Myclass to qml:

But my object was filled in function

Can you show us the function signature?

[Samuel Costa]

This is my function :

[VRonin]

it should work. Can you show us the QML? (text instead of images helps)

[Samuel Costa]

At this point I'm just printing the object:
console.log("Here...... " + awi_base.getAwiProp("id_fld_51" , uiContext.currentAwiLabelDesignCanvas.awi_Base_Compound))

[Samuel Costa]

I added this line to my function:
QQmlEngine::setObjectOwnership(prop, QQmlEngine::CppOwnership);
and it worked

[Samuel Costa]

Can I get the AWI_PROP object this way in QML / JavaScript ?

QML:
     property AWI_PROP awi_prop_width
     property AWI_PROP awi_prop_height

JavaScript:
  onAwiBase_CompoundChanged: {
         awi_prop_width = awiBase_Compound.getAwiProp ("id_fld_51")
         awi_prop_height = awiBase_Compound.getAwiProp ("id_fld_52")
}