Reference Errors

maxwell31

Hi,

I have the following problem: I get the following errors at startup of my QML application:

      qrc:/CustomScreen.qml:14:5: QML Connections: Cannot assign to non-existent property "onCustomSignal"
     qrc:/CustomScreen2.qml:15: ReferenceError: customObject is not defined
     qrc:/CustomScreen3.qml:54: ReferenceError: customModel is not defined

I suppose this happens because I set these properties from C++ only after the application start. What is the correct way of dealing with things, e.g. a model which only get created during the application?

sierdzio

You need to initialize the model before you load your QML files - with some default / empty values if you don't yet have the "proper" ones. Then QML engine won't complain.

Alternatively, you can defer loading the CustomScreenX components by using a Loader (or Qt.createComponent()) and only load them when your data is ready.