Microsoft KB Archive/130564

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PRB: SnmpMgrGetTrap Fails

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Q130564

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The information in this article applies to:


 * Microsoft Win32 Software Development Kit (SDK) for Windows NT

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SYMPTOMS
If an SNMP manager application calls SnmpMgrGetTrap to receive traps and there are traps available, it returns FALSE. If the application calls GetLastError, the error code returned is 42 (SNMP_MGMTAPI_TRAP_ERRORS).

RESOLUTION
The SNMP Manager API SnmpMgrGetTrapListen must be called before calling SnmpMgrGetTrap. The event handle returned by SnmpMgrGetTrapListen can then be ignored to poll for traps.

STATUS
This behavior is by design.