SnmpUtilOidNCmp

// snmpapi.dll
#include <windows.h>

INT SnmpUtilOidNCmp(
    AsnObjectIdentifier* pOid1,
    AsnObjectIdentifier* pOid2,
    DWORD nSubIds
);

<DllImport("snmpapi.dll", ExactSpelling:=True)>
Public Shared Function SnmpUtilOidNCmp(
    pOid1 As IntPtr,   ' AsnObjectIdentifier* in/out
    pOid2 As IntPtr,   ' AsnObjectIdentifier* in/out
    nSubIds As UInteger   ' DWORD
) As Integer
End Function

' pOid1 : AsnObjectIdentifier* in/out
' pOid2 : AsnObjectIdentifier* in/out
' nSubIds : DWORD
Declare PtrSafe Function SnmpUtilOidNCmp Lib "snmpapi" ( _
    ByVal pOid1 As LongPtr, _
    ByVal pOid2 As LongPtr, _
    ByVal nSubIds As Long) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

SnmpUtilOidNCmp = ctypes.windll.snmpapi.SnmpUtilOidNCmp
SnmpUtilOidNCmp.restype = ctypes.c_int
SnmpUtilOidNCmp.argtypes = [
    ctypes.c_void_p,  # pOid1 : AsnObjectIdentifier* in/out
    ctypes.c_void_p,  # pOid2 : AsnObjectIdentifier* in/out
    wintypes.DWORD,  # nSubIds : DWORD
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('snmpapi.dll')
SnmpUtilOidNCmp = Fiddle::Function.new(
  lib['SnmpUtilOidNCmp'],
  [
    Fiddle::TYPE_VOIDP,  # pOid1 : AsnObjectIdentifier* in/out
    Fiddle::TYPE_VOIDP,  # pOid2 : AsnObjectIdentifier* in/out
    -Fiddle::TYPE_INT,  # nSubIds : DWORD
  ],
  Fiddle::TYPE_INT)

#[link(name = "snmpapi")]
extern "system" {
    fn SnmpUtilOidNCmp(
        pOid1: *mut AsnObjectIdentifier,  // AsnObjectIdentifier* in/out
        pOid2: *mut AsnObjectIdentifier,  // AsnObjectIdentifier* in/out
        nSubIds: u32  // DWORD
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("snmpapi.dll")]
public static extern int SnmpUtilOidNCmp(IntPtr pOid1, IntPtr pOid2, uint nSubIds);
"@
$api = Add-Type -MemberDefinition $sig -Name 'snmpapi_SnmpUtilOidNCmp' -Namespace Win32 -PassThru
# $api::SnmpUtilOidNCmp(pOid1, pOid2, nSubIds)

#uselib "snmpapi.dll"
#func global SnmpUtilOidNCmp "SnmpUtilOidNCmp" sptr, sptr, sptr
; SnmpUtilOidNCmp varptr(pOid1), varptr(pOid2), nSubIds   ; 戻り値は stat
; pOid1 : AsnObjectIdentifier* in/out -> "sptr"
; pOid2 : AsnObjectIdentifier* in/out -> "sptr"
; nSubIds : DWORD -> "sptr"
; ※HSP3.7は #func のため戻り値はシステム変数 stat に格納されます。

#uselib "snmpapi.dll"
#cfunc global SnmpUtilOidNCmp "SnmpUtilOidNCmp" var, var, int
; res = SnmpUtilOidNCmp(pOid1, pOid2, nSubIds)
; pOid1 : AsnObjectIdentifier* in/out -> "var"
; pOid2 : AsnObjectIdentifier* in/out -> "var"
; nSubIds : DWORD -> "int"
; ※出力/バッファ引数は var 方式(変数を直接渡す)。varptr 方式にも切替可。

; INT SnmpUtilOidNCmp(AsnObjectIdentifier* pOid1, AsnObjectIdentifier* pOid2, DWORD nSubIds)
#uselib "snmpapi.dll"
#cfunc global SnmpUtilOidNCmp "SnmpUtilOidNCmp" var, var, int
; res = SnmpUtilOidNCmp(pOid1, pOid2, nSubIds)
; pOid1 : AsnObjectIdentifier* in/out -> "var"
; pOid2 : AsnObjectIdentifier* in/out -> "var"
; nSubIds : DWORD -> "int"
; ※出力/バッファ引数は var 方式(変数を直接渡す)。varptr 方式にも切替可。

import (
	"golang.org/x/sys/windows"
	"unsafe"
)

var (
	snmpapi = windows.NewLazySystemDLL("snmpapi.dll")
	procSnmpUtilOidNCmp = snmpapi.NewProc("SnmpUtilOidNCmp")
)

// pOid1 (AsnObjectIdentifier* in/out), pOid2 (AsnObjectIdentifier* in/out), nSubIds (DWORD)
r1, _, err := procSnmpUtilOidNCmp.Call(
	uintptr(pOid1),
	uintptr(pOid2),
	uintptr(nSubIds),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // INT

function SnmpUtilOidNCmp(
  pOid1: Pointer;   // AsnObjectIdentifier* in/out
  pOid2: Pointer;   // AsnObjectIdentifier* in/out
  nSubIds: DWORD   // DWORD
): Integer; stdcall;
  external 'snmpapi.dll' name 'SnmpUtilOidNCmp';

result := DllCall("snmpapi\SnmpUtilOidNCmp"
    , "Ptr", pOid1   ; AsnObjectIdentifier* in/out
    , "Ptr", pOid2   ; AsnObjectIdentifier* in/out
    , "UInt", nSubIds   ; DWORD
    , "Int")   ; return: INT

●SnmpUtilOidNCmp(pOid1, pOid2, nSubIds) = DLL("snmpapi.dll", "int SnmpUtilOidNCmp(void*, void*, dword)")
# 呼び出し: SnmpUtilOidNCmp(pOid1, pOid2, nSubIds)
# pOid1 : AsnObjectIdentifier* in/out -> "void*"
# pOid2 : AsnObjectIdentifier* in/out -> "void*"
# nSubIds : DWORD -> "dword"
# なでしこ1は32bit・ANSI(Shift_JIS)。文字列=char*(ANSI)、ポインタ/ハンドル=void*(4byte)。