Returns the user active session count.
PRL_RESULT PrlUsrInfo_GetSessionCount( PRL_HANDLE hUserInfo, PRL_UINT32_PTR pnSessionCount );
PrlApiDisp.h
PRL_RESULT. Possible values:
PRL_ERR_INVALID_ARG - invalid handle or null pointer was passed.
PRL_ERR_SUCCESS - function completed successfully.