Another question on same QML...

[SPlatten]

There are references in the QML file:

Item {
  id: root
  property var theme : isDarkTheme ? Dark : Light

  property double heading : vehicle.data.heading ? vehicle.data.heading : 0

I cannot see any mention of vehicle in the file except to read its content, how can I find out where it comes from?

[J.Hilk]

@SPlatten ah, welcome to qml :D

Two options:

1. (Let's hope for this one) vehicle is a c++ object registered ContextProperty. If thats the case, you'll have somewhere a in your c++ files a setContextProperty call. Usually where your QmlEngine is instantiated. main.cpp)

2. It is a custom property, defined anywhere in the parent/child hierarchy of any of the parents. Good luck finding it.

[SPlatten]

@J-Hilk , thank you, I searched the entire source for setContextProperty and found lots of other references but sadly not for "vehicle".

Found it I think, there is a helper function that calls setContextProperty where one of the parameters passed into it is "vehicle".