[This is preliminary documentation and subject to change.]
The following table summarizes the basic programming procedures that you must perform to code a WinSNMP manager application, and the topics that provide information about these tasks.
| Programming task | Task-related function and topics |
|---|---|
| Open the WinSNMP application. | Use SnmpStartup. |
| Open one or more WinSNMP sessions. | Use SnmpOpen. |
| Register to receive traps or notifications. | Use SnmpRegister. |
| Create one or more variable binding lists for incorporation in a PDU. | Use SnmpCreateVbl, SnmpDuplicateVbl, SnmpSetVb. See Working with Variable Binding Lists. Note: The application may need to call other variable binding functions to create the variable binding list. |
| Create one or more PDUs for transmission and processing. | Use SnmpCreatePDU, SnmpSetPduData, SnmpDuplicatePDU. See Working with Protocol Data Units. Note: The application may need to call other PDU functions and WinSNMP utility functions to create the PDU. |
| Submit one or more SNMP operation requests. | Use SnmpSendMsg. |
| Retrieve the response to the SNMP operation request. | Use SnmpRecvMsg. |
| Process the request response. | Use application-specific logic. |
| Close each WinSNMP session. | Use SnmpClose. |
| Close the WinSNMP application. | Use SnmpCleanup. |
The following topics contain additional information about other general programming concepts specific to the WinSNMP environment.
| General programming tasks | Managing Object Identifiers |
In addition, the WinSNMP manager application may need to incorporate calls to the following WinSNMP functions: SnmpFreeVbl, SnmpFreeEntity, SnmpFreeDescriptor, SnmpFreeContext, and SnmpFreePdu. This enables the Microsoft WinSNMP implementation to free WinSNMP memory objects. As a general rule, the WinSNMP manager application should free all resources allocated as the result of a call to a WinSNMP function. For additional information about deallocating resources, see Allocating WinSNMP Memory Objects.