3.1.4.10 SCARD_IOCTL_INTRODUCEREADERGROUPW (IOCTL 0x00090054)
The Unicode version of Introduce Reader Group adds the reader group specified in ContextAndStringW_Call.sz (for more information, see section 2.2.2.6) to the list of reader groups known to Smart Cards for Windows.
Return Values: The method sets Long_Return.ReturnCode (for more information, see section 2.2.3.3) to SCARD_S_SUCCESS on success; otherwise, it sets one of the smart card-specific errors or one of the return codes from Winerror.h. No specialized error codes are associated with this method.