SnmpOidCopy

// wsnmp32.dll
#include <windows.h>

DWORD SnmpOidCopy(
    smiOID* srcOID,
    smiOID* dstOID
);

<DllImport("wsnmp32.dll", ExactSpelling:=True)>
Public Shared Function SnmpOidCopy(
    srcOID As IntPtr,   ' smiOID* in/out
    dstOID As IntPtr   ' smiOID* in/out
) As UInteger
End Function

' srcOID : smiOID* in/out
' dstOID : smiOID* in/out
Declare PtrSafe Function SnmpOidCopy Lib "wsnmp32" ( _
    ByVal srcOID As LongPtr, _
    ByVal dstOID As LongPtr) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

SnmpOidCopy = ctypes.windll.wsnmp32.SnmpOidCopy
SnmpOidCopy.restype = wintypes.DWORD
SnmpOidCopy.argtypes = [
    ctypes.c_void_p,  # srcOID : smiOID* in/out
    ctypes.c_void_p,  # dstOID : smiOID* in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('wsnmp32.dll')
SnmpOidCopy = Fiddle::Function.new(
  lib['SnmpOidCopy'],
  [
    Fiddle::TYPE_VOIDP,  # srcOID : smiOID* in/out
    Fiddle::TYPE_VOIDP,  # dstOID : smiOID* in/out
  ],
  -Fiddle::TYPE_INT)

#[link(name = "wsnmp32")]
extern "system" {
    fn SnmpOidCopy(
        srcOID: *mut smiOID,  // smiOID* in/out
        dstOID: *mut smiOID  // smiOID* in/out
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("wsnmp32.dll")]
public static extern uint SnmpOidCopy(IntPtr srcOID, IntPtr dstOID);
"@
$api = Add-Type -MemberDefinition $sig -Name 'wsnmp32_SnmpOidCopy' -Namespace Win32 -PassThru
# $api::SnmpOidCopy(srcOID, dstOID)

#uselib "wsnmp32.dll"
#func global SnmpOidCopy "SnmpOidCopy" sptr, sptr
; SnmpOidCopy varptr(srcOID), varptr(dstOID)   ; 戻り値は stat
; srcOID : smiOID* in/out -> "sptr"
; dstOID : smiOID* in/out -> "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 "wsnmp32.dll"
#cfunc global SnmpOidCopy "SnmpOidCopy" var, var
; res = SnmpOidCopy(srcOID, dstOID)
; srcOID : smiOID* in/out -> "var"
; dstOID : smiOID* in/out -> "var"
; ※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。

; DWORD SnmpOidCopy(smiOID* srcOID, smiOID* dstOID)
#uselib "wsnmp32.dll"
#cfunc global SnmpOidCopy "SnmpOidCopy" var, var
; res = SnmpOidCopy(srcOID, dstOID)
; srcOID : smiOID* in/out -> "var"
; dstOID : smiOID* in/out -> "var"
; ※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 (
	wsnmp32 = windows.NewLazySystemDLL("wsnmp32.dll")
	procSnmpOidCopy = wsnmp32.NewProc("SnmpOidCopy")
)

// srcOID (smiOID* in/out), dstOID (smiOID* in/out)
r1, _, err := procSnmpOidCopy.Call(
	uintptr(srcOID),
	uintptr(dstOID),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function SnmpOidCopy(
  srcOID: Pointer;   // smiOID* in/out
  dstOID: Pointer   // smiOID* in/out
): DWORD; stdcall;
  external 'wsnmp32.dll' name 'SnmpOidCopy';

result := DllCall("wsnmp32\SnmpOidCopy"
    , "Ptr", srcOID   ; smiOID* in/out
    , "Ptr", dstOID   ; smiOID* in/out
    , "UInt")   ; return: DWORD

●SnmpOidCopy(srcOID, dstOID) = DLL("wsnmp32.dll", "dword SnmpOidCopy(void*, void*)")
# 呼び出し: SnmpOidCopy(srcOID, dstOID)
# srcOID : smiOID* in/out -> "void*"
# dstOID : smiOID* in/out -> "void*"
# 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)。