Drag and Drop with QQuickView

I’m upgrading my application to Qt 5.1, Qt Quick 2.1. I display a QML view in my mostly widget based application, on top of QDeclarativeView. Originally I subclassed QDeclarativeView to add drag/drop functionality, so I could drop on top of the view and respond to it in my code. Now I see that QQuickView does not inherit from QWidget. How can I achieve the same functionality?