the object path to register at
introspection data for the interface
a #GDBusInterfaceVTable to call into or %NULL
data to pass to functions in @vtable
function to call when the object path is unregistered
0 if @error is set, otherwise a registration id (never 0) that can be used with g_dbus_connection_unregister_object()
GException on failure.
2.26
Registers callbacks for exported objects at @object_path with the D-Bus interface that is described in @interface_info.
Calls to functions in @vtable (and @user_data_free_func) will happen in the [thread-default main context][g-main-context-push-thread-default] of the thread you are calling this method from.
Note that all #GVariant values passed to functions in @vtable will match the signature given in @interface_info - if a remote caller passes incorrect values, the org.freedesktop.DBus.Error.InvalidArgs is returned to the remote caller.
Additionally, if the remote caller attempts to invoke methods or access properties not mentioned in @interface_info the org.freedesktop.DBus.Error.UnknownMethod resp. org.freedesktop.DBus.Error.InvalidArgs errors are returned to the caller.
It is considered a programming error if the #GDBusInterfaceGetPropertyFunc function in @vtable returns a #GVariant of incorrect type.
If an existing callback is already registered at @object_path and @interface_name, then @error is set to #G_IO_ERROR_EXISTS.
GDBus automatically implements the standard D-Bus interfaces org.freedesktop.DBus.Properties, org.freedesktop.DBus.Introspectable and org.freedesktop.Peer, so you don't have to implement those for the objects you export. You can implement org.freedesktop.DBus.Properties yourself, e.g. to handle getting and setting of properties asynchronously.
Note that the reference count on @interface_info will be incremented by 1 (unless allocated statically, e.g. if the reference count is -1, see g_dbus_interface_info_ref()) for as long as the object is exported. Also note that @vtable will be copied.
See this server[gdbus-server] for an example of how to use this method.