If I do this (in QtGui):

<object-type name="QTreeWidgetItem" hash-function="qHash">

I get this kind of generated code:

static long SbkQTreeWidgetItem_HashFunc(PyObject* obj){
    return qHash(Shiboken::Converter<QTreeWidgetItem >::toCpp(obj));
}

which won't compile. If changed to this (ptr instead of value):

static long SbkQTreeWidgetItem_HashFunc(PyObject* obj){
    return qHash(Shiboken::Converter<QTreeWidgetItem* >::toCpp(obj));
}

everything works fine.