QtPropertyBrowser subclass QtVariantPropertyManager and QtVariantEditorFactory gives linker error because of Q_OBJECT (Qt Property Browser Variant Manager Editor Factory)

I'm subclassing QtVariantPropertyManager and QtVariantEditorFactory. I get these two linker errors from Visual Studio 2005 with Qt 4.5.3 (even though the MOC files ARE included):

1>moc_VariantEditorFactoryExtended.obj : error LNK2001: unresolved external symbol "public: static struct QMetaObject const QtVariantEditorFactory::staticMetaObject" (?staticMetaObject@QtVariantEditorFactory@@2UQMetaObject@@B)

1>moc_VariantPropertyManagerExtended.obj : error LNK2001: unresolved external symbol "public: static struct QMetaObject const QtVariantPropertyManager::staticMetaObject" (?staticMetaObject@QtVariantPropertyManager@@2UQMetaObject@@B)

This is the same as QTSOLBUG-105, which was closed...