public uint register_object<T> (string object_path, T object) throws IOError

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 of the thread you are calling this method from.

Note that all Variant 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 DBusInterfaceGetPropertyFunc function in vtable returns a Variant of incorrect type.

If an existing callback is already registered at object_path and interface_name, then throws is set to 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 @ref) for as long as the object is exported. Also note that vtable will be copied.

See this server for an example of how to use this method.



a DBusConnection


the object path to register at


introspection data for the interface


data to pass to functions in vtable


function to call when the object path is unregistered


a DBusInterfaceVTable to call into or null


0 if throws is set, otherwise a registration id (never 0) that can be used with unregister_object