QtQuick define time constant property and inheritance

[strahlex]

Hello I have 2 questions probably easy to answer for you:

• I want to create QML Component which uses in the initialisator something like this:
  @
  MyComponent {
  id: whatever
  name: "myName"
  }
  @
  In the C++ Code:
  @
  MyComponent::MyComponent(QObject *parent)
  {
  this->randomClass = new RandomClass(m_name);
  }
  @

So the name is only relevant at the startup of the application and should never be changed. How can I do that?

• How can I use Inheritance in QML. In fact I want to do something like this:
  @
  MyComponent {
  id: myComponent
  name: "test"
  MyPin {
  id: pin1
  name: "out"
  type: Pin_Bool
  }
  MyPin {
  id: pin2
  name: "in"
  type: Pin_Float
  }
  }
  @

In the C++ code this should happen at startup:
@
// In Class MyComponent
myComponent = new MyComponent(m_name);
// In Class Pin1
parent->newPin(m_name);
// In Class Pin2
parent->newPin(m_name);
// In Class MyComponent
myComponent->ready();
@
How can I achieve that?