It would be convenient if one could jump from C++ when browsing particular classes or elements. For example, open

http://doc.qt.nokia.com/qtmobility-1.2/qsystembatteryinfo.html

there is no hint that this class actually is covered by mobility QML bindings, what the element name is, etc. If you want to find out whether it has a binding, you have to traverse the QML plugin documentation independently.