Returns the backup user password enabling sign.
PRL_RESULT PrlDispCfg_IsBackupUserPasswordEnabled( PRL_HANDLE hDispConfig, PRL_BOOL_PTR pbUserPasswordEnabled );
PrlApiDeprecated.h
PRL_RESULT. Possible values are:
PRL_ERR_INVALID_ARG - invalid handle or null pointer was passed.
PRL_ERR_SUCCESS - function completed successfully.