The Unicode version of Forget Reader removes the smart card reader specified in ContextAndStringW_Call.sz (for more information, see section from the list of smart card readers known to Smart Cards for Windows.

Return Values: The method sets Long_Return.ReturnCode (for more information, see section 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.