[AGENT++] how long can a oid be?

[OELoo Jerry]

Hi all
     i have meet some problem with the snmp++ and agent++. i have make two 
simple exes-getexe and proxyexe with MSVC,the former send the get 
request,the later receive the request and send the response.
when i make the oid as "1.3.6.1.2.1.1.1.1.0" or "1.3.6.1.2.155.1.1.0",both 
exes work ok,but when i make it as "1.11.1.2.1.1.31.14.3.9" the proxyexe 
will be access violation....i have tested some oid,i found if the oid is 
longer than some length the proxyexe will crash ....
   so why it is ?  if there is a length limit for the oid ? 
   thanks in advance
   any hints will be appreciated

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