SnmpUtilOidAppend

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

INT SnmpUtilOidAppend(
    AsnObjectIdentifier* pOidDst,
    AsnObjectIdentifier* pOidSrc
);

<DllImport("snmpapi.dll", SetLastError:=True, ExactSpelling:=True)>
Public Shared Function SnmpUtilOidAppend(
    pOidDst As IntPtr,   ' AsnObjectIdentifier* in/out
    pOidSrc As IntPtr   ' AsnObjectIdentifier* in/out
) As Integer
End Function

' pOidDst : AsnObjectIdentifier* in/out
' pOidSrc : AsnObjectIdentifier* in/out
Declare PtrSafe Function SnmpUtilOidAppend Lib "snmpapi" ( _
    ByVal pOidDst As LongPtr, _
    ByVal pOidSrc 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

SnmpUtilOidAppend = ctypes.windll.snmpapi.SnmpUtilOidAppend
SnmpUtilOidAppend.restype = ctypes.c_int
SnmpUtilOidAppend.argtypes = [
    ctypes.c_void_p,  # pOidDst : AsnObjectIdentifier* in/out
    ctypes.c_void_p,  # pOidSrc : AsnObjectIdentifier* in/out
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('snmpapi.dll')
SnmpUtilOidAppend = Fiddle::Function.new(
  lib['SnmpUtilOidAppend'],
  [
    Fiddle::TYPE_VOIDP,  # pOidDst : AsnObjectIdentifier* in/out
    Fiddle::TYPE_VOIDP,  # pOidSrc : AsnObjectIdentifier* in/out
  ],
  Fiddle::TYPE_INT)

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

$sig = @"
[DllImport("snmpapi.dll", SetLastError = true)]
public static extern int SnmpUtilOidAppend(IntPtr pOidDst, IntPtr pOidSrc);
"@
$api = Add-Type -MemberDefinition $sig -Name 'snmpapi_SnmpUtilOidAppend' -Namespace Win32 -PassThru
# $api::SnmpUtilOidAppend(pOidDst, pOidSrc)

#uselib "snmpapi.dll"
#func global SnmpUtilOidAppend "SnmpUtilOidAppend" sptr, sptr
; SnmpUtilOidAppend varptr(pOidDst), varptr(pOidSrc)   ; 戻り値は stat
; pOidDst : AsnObjectIdentifier* in/out -> "sptr"
; pOidSrc : AsnObjectIdentifier* 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 "snmpapi.dll"
#cfunc global SnmpUtilOidAppend "SnmpUtilOidAppend" var, var
; res = SnmpUtilOidAppend(pOidDst, pOidSrc)
; pOidDst : AsnObjectIdentifier* in/out -> "var"
; pOidSrc : AsnObjectIdentifier* 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。

; INT SnmpUtilOidAppend(AsnObjectIdentifier* pOidDst, AsnObjectIdentifier* pOidSrc)
#uselib "snmpapi.dll"
#cfunc global SnmpUtilOidAppend "SnmpUtilOidAppend" var, var
; res = SnmpUtilOidAppend(pOidDst, pOidSrc)
; pOidDst : AsnObjectIdentifier* in/out -> "var"
; pOidSrc : AsnObjectIdentifier* 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 (
	snmpapi = windows.NewLazySystemDLL("snmpapi.dll")
	procSnmpUtilOidAppend = snmpapi.NewProc("SnmpUtilOidAppend")
)

// pOidDst (AsnObjectIdentifier* in/out), pOidSrc (AsnObjectIdentifier* in/out)
r1, _, err := procSnmpUtilOidAppend.Call(
	uintptr(pOidDst),
	uintptr(pOidSrc),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // INT

function SnmpUtilOidAppend(
  pOidDst: Pointer;   // AsnObjectIdentifier* in/out
  pOidSrc: Pointer   // AsnObjectIdentifier* in/out
): Integer; stdcall;
  external 'snmpapi.dll' name 'SnmpUtilOidAppend';

result := DllCall("snmpapi\SnmpUtilOidAppend"
    , "Ptr", pOidDst   ; AsnObjectIdentifier* in/out
    , "Ptr", pOidSrc   ; AsnObjectIdentifier* in/out
    , "Int")   ; return: INT

●SnmpUtilOidAppend(pOidDst, pOidSrc) = DLL("snmpapi.dll", "int SnmpUtilOidAppend(void*, void*)")
# 呼び出し: SnmpUtilOidAppend(pOidDst, pOidSrc)
# pOidDst : AsnObjectIdentifier* in/out -> "void*"
# pOidSrc : AsnObjectIdentifier* 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)。