[AGENT++] callback problem

[Jochen Katz]

Hi,

> *) In the header i did a typedef:
> typedef void (*snmp_callback)( int, Snmp*, Pdu&, SnmpTarget&, void*);

this is not needed, as uxsnmp.h already defines this.

> My compiler (g++ 3.4.5) says that
> snmpsession.cpp:187: error: no matching function for call to
> `Snmp::get(Pdu&, SnmpTarget&, <unresolved overloaded function type>, int)'

> void SNMPSession::getCallback(int reason, Snmp* session, Pdu &pdu,
>                              SnmpTarget &target, void* callback_data)

The problem is, that getcallback() has to be a plain C function (not
within a C++ class).

Below some code from the QtExample.

Rgards,
  Jochen


/// C Callback function for snmp++
void callback(int reason, Snmp *snmp, Pdu &pdu, SnmpTarget &target,
              void *cd)
{
  if (cd)
  {
    // just call the real callback member function...
    ((MainWindow*)cd)->async_callback(reason, snmp, pdu, target);
  }
}


  // Now do an async get_next
  status = snmp->get_next(pdu, *target, callback, this);