Here are the classes, structs, unions and interfaces with brief descriptions:

Cqmlbind_application	Opaque struct to be used as `self` argument in the methods defined in qmlbind_application
Cqmlbind_client_callbacks	Encapsulates client-side functions that are used from QML for C object creation, destruction, method calls and property modification
Cqmlbind_client_class	Opaque struct to represent a client-side class object (a.k.a. metaclass) to libqmlbind
Cqmlbind_client_object	Opaque struct to represent a client-side object exposed to the metaobject system to libqmlbind
Cqmlbind_component	Opaque struct mainly used as `self` argument in the methods defined in qmlbind_component
Cqmlbind_engine	Opaque struct mainly used as `self` argument in the methods defined in qmlbind_engine
Cqmlbind_iterator	Opaque struct mainly used as `self` argument in the methods defined in qmlbind_iterator
Cqmlbind_metaclass	Opaque struct mainly used as `self` argument in the methods defined in qmlbind_metaclass
Cqmlbind_plugin	Opaque struct mainly used as `self` argument in the methods defined in qmlbind_plugin
Cqmlbind_signal_emitter	Opaque struct mainly used as `self` argument in the methods defined in qmlbind_signal_emitter
Cqmlbind_string	Opaque struct mainly used as `self` argument in the methods defined in qmlbind_string
Cqmlbind_value	Opaque struct mainly used as `self` argument in the methods defined in qmlbind_value