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The DhcpHlprAddV4PolicyExpr function allocates, initializes, and adds a DHCP server policy expression to a DHCP server policy.
Syntax
DWORD DHCP_API_FUNCTION DhcpHlprAddV4PolicyExpr(
[in, out] LPDHCP_POLICY Policy,
[in] DWORD ParentExpr,
[in] DHCP_POL_LOGIC_OPER Operator,
[out] DWORD *ExprIndex
);
Parameters
[in, out] Policy
Pointer to a DHCP_POLICY structure that contains the policy to modify
[in] ParentExpr
Integer that specifies the expression index that corresponds to this constituent condition.
[in] Operator
A DHCP_POL_LOGIC_OPER enumeration that defines how the expression is to be evaluated in terms of the results of its constituents.
[out] ExprIndex
Pointer to a DWORD that contains the newly created expression's index in the DHCP server policy.
Return value
If the function succeeds, it returns ERROR_SUCCESS.
If the function fails, it returns one of the following or an error code from DHCP Server Management API Error Codes.
| Value | Meaning |
|---|---|
|
One or more of the parameters were invalid. |
|
Not enough memory available. |
|
The parent expression specified does not exist. |
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | None supported |
| Minimum supported server | Windows Server 2012 [desktop apps only] |
| Target Platform | Windows |
| Header | dhcpsapi.h |
| Library | Dhcpsapi.lib |
| DLL | Dhcpsapi.dll |