使用CreateIpForwardEntry添加新的路由表， 使用DeleteIpForwardEntry删除路由表， 使用SetIpForwardEntry修改路由表。 MSDN: Platform SDK: Internet Protocol Helper CreateIpForwardEntry The CreateIpForwardEntry function creates a route in the local computer's IP routing table.DWORD CreateIpForwardEntry( PMIB_IPFORWARDROW pRoute // pointer to route information ); Parameters pRoute [in] Pointer to a MIB_IPFORWARDROW structure that specifies the information for the new route. The caller must specify values for all members of this structure. The caller must specify PROTO_IP_NETMGMT for the dwForwardProto member of MIB_IPFORWARDROW. Return Values If the function succeeds, the return value is NO_ERROR.If the function fails, the return value is one of the following error codes.Value Meaning ERROR_INVALID_PARAMETER The pRoute parameter is NULL, SetIpFowardEntry is unable to read from the memory pointed to by pRoute, or one of the members of the MIB_IPFORWARDROW structure is invalid. ERROR_NOT_SUPPORTED The IP transport is not configured on the local computer. Other Use FormatMessage to obtain the message string for the returned error. Res To modify an existing route in the IP routing table, use the SetIpForwardEntry function.The caller should not specify a routing protocol, for example, PROTO_IP_OSPF, for the dwForwardProto member of the MIB_IPFORWARDROW structure. Routing protocol identifiers are used only to identify route information received through the specified routing protocol. For example, PROTO_IP_OSPF is used only to identify route information received through the OSPF routing protocol.The dwForwardPolicy member of the MIB_IPFORWARDROW structure is currently unused. The caller should specify zero for this member.The dwForwardAge member of the MIB_IPFORWARDROW structure is used only if the Routing and Remote Access Service (RRAS) is running, and then only for routes of type PROTO_IP_NETMGMT.Requirements Windows NT/2000/XP: Included in Windows NT 4.0 SP4; Windows 2000; Windows XP Pro; and Windows .NET Server. Windows 95/98/Me: Included in Windows 98 and later. Header: Declared in Iphlpapi.h. Library: Use Iphlpapi.lib.
使用DeleteIpForwardEntry删除路由表，
使用SetIpForwardEntry修改路由表。
MSDN:
Platform SDK: Internet Protocol Helper
CreateIpForwardEntry
The CreateIpForwardEntry function creates a route in the local computer's IP routing table.DWORD CreateIpForwardEntry(
PMIB_IPFORWARDROW pRoute // pointer to route information
);
Parameters
pRoute
[in] Pointer to a MIB_IPFORWARDROW structure that specifies the information for the new route. The caller must specify values for all members of this structure. The caller must specify PROTO_IP_NETMGMT for the dwForwardProto member of MIB_IPFORWARDROW.
Return Values
If the function succeeds, the return value is NO_ERROR.If the function fails, the return value is one of the following error codes.Value Meaning
ERROR_INVALID_PARAMETER The pRoute parameter is NULL, SetIpFowardEntry is unable to read from the memory pointed to by pRoute, or one of the members of the MIB_IPFORWARDROW structure is invalid.
ERROR_NOT_SUPPORTED The IP transport is not configured on the local computer.
Other Use FormatMessage to obtain the message string for the returned error.
Res
To modify an existing route in the IP routing table, use the SetIpForwardEntry function.The caller should not specify a routing protocol, for example, PROTO_IP_OSPF, for the dwForwardProto member of the MIB_IPFORWARDROW structure. Routing protocol identifiers are used only to identify route information received through the specified routing protocol. For example, PROTO_IP_OSPF is used only to identify route information received through the OSPF routing protocol.The dwForwardPolicy member of the MIB_IPFORWARDROW structure is currently unused. The caller should specify zero for this member.The dwForwardAge member of the MIB_IPFORWARDROW structure is used only if the Routing and Remote Access Service (RRAS) is running, and then only for routes of type PROTO_IP_NETMGMT.Requirements
Windows NT/2000/XP: Included in Windows NT 4.0 SP4; Windows 2000; Windows XP Pro; and Windows .NET Server.
Windows 95/98/Me: Included in Windows 98 and later.
Header: Declared in Iphlpapi.h.
Library: Use Iphlpapi.lib.
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