Sets PATH to the default backup directory.
PRL_RESULT PrlDispCfg_SetDefaultBackupDirectory( PRL_HANDLE hDispConfig, PRL_CONST_STR sBackupDirectory );
PrlApiDeprecated.h
PRL_RESULT. Possible values are:
PRL_ERR_INVALID_ARG - invalid handle was passed.
PRL_ERR_SUCCESS - function completed successfully.