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DhcpHlprAddV4PolicyExpr function (dhcpsapi.h)

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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
ERROR_INVALID_PARAMETER
 One or more of the parameters were invalid.
ERROR_NOT_ENOUGH_MEMORY
 Not enough memory available.
ERROR_DHCP_POLICY_BAD_PARENT_EXPR
 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

See also

DhcpHlprAddV4PolicyCondition

DhcpHlprAddV4PolicyRange

DhcpHlprCreateV4Policy

DhcpHlprFreeV4Policy

DhcpHlprIsV4PolicySingleUC

DhcpHlprIsV4PolicyValid

DhcpHlprIsV4PolicyWellFormed

DhcpHlprModifyV4PolicyExpr

DhcpHlprResetV4PolicyExpr