CopperSpice DBUS  1.7.4
Using DBus Adaptors

Adaptors are special classes which are attached to any QObject-derived class and provide the interface to the external world using D-Bus. Adaptors are intended to be lightweight classes whose main purpose is to relay calls to and from the real object, possibly validating or converting the input from the external world and, thus, protecting the real object.

Unlike multiple inheritance adaptors can be added at any time to any object (but not removed), which allows for greater flexibility when exporting existing classes. Another advantage of adaptors is to provide similar but not identical functionality in methods of the same name in different interfaces, a case which can be quite common when adding a new version of a standard interface to an object.

In order to use an adaptor you need to create a class which inherits from QDBusAbstractAdaptor. Since this is a standard QObject derived class, the CS_OBJECT macro must appear in the declaration and the source file. The class must also contain one CS_CLASSINFO() entry with the D-Bus Interface name, declaring which interface it is exporting. Only one entry per class is supported.

Any public slot in the class will be accessible through the bus over messages of the MethodCall type. Signals in the class will be automatically relayed over D-Bus. However, not all types are allowed signals or slots parameter lists.

Also, any property declared with CS_PROPERTY will be automatically exposed over the Properties interface on D-Bus. Since the QObject property system does not allow for non-readable properties, it is not possible to declare write-only properties using adaptors.

See also
QDBusAbstractAdaptor