SMS Stack clients use specialisations of this class to configure a SMS Message with Control Information Elements which have been introduced in 23.040 v6.5.0.

The 23.040 v6.5.0 standard defines individual requirements for how each of these control information elements is to be encoded and decoded. These requirements mean that these control information elements need to be configured in the CSmsMessage using derivations of this interface, rather than CSmsUserData::AddInformationElementL().

CSmsUserData::AddInformationElement specifies those information elements it supports and those that are supported by CSmsIEOperation and its derivatives.

Each control information element that uses this interface is supported by a class derived from CSmsIEOperation. The derived class operates on the CSmsMessage, allowing the client to add, remove and access control information elements inside the CSmsMessage.

The client gets access to an operations class using the following interface:

CSmsIEOperation& CSmsMessage::GetOperationsForIEL(CSmsInformationElement::TSmsInformationElementIdentifier aId);

When the CSmsMessage is deleted, all its associated CSmsIEOperations classes are also deleted and references to them become stale. Each instance of the CSmsIEOperation Class is an attributes of the CSmsMessage itself.