To initialize a channel ActiveX control conformant to FDT 1.2.1 specification, the Frame Application has first to check, if the interface IFdtChannelActiveXControl2 exists.
If it exists the Frame Application has to call the IFdtChannelActiveXControl2::Init2() function at this interface.
If it does not exist, the Frame Application calls the IFdtChannelActiveXControl::Init() function.