SnmpStartupEx

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

DWORD SnmpStartupEx(
    DWORD* nMajorVersion,
    DWORD* nMinorVersion,
    DWORD* nLevel,
    SNMP_API_TRANSLATE_MODE* nTranslateMode,
    SNMP_STATUS* nRetransmitMode
);

<DllImport("wsnmp32.dll", ExactSpelling:=True)>
Public Shared Function SnmpStartupEx(
    ByRef nMajorVersion As UInteger,   ' DWORD* in/out
    ByRef nMinorVersion As UInteger,   ' DWORD* in/out
    ByRef nLevel As UInteger,   ' DWORD* in/out
    ByRef nTranslateMode As UInteger,   ' SNMP_API_TRANSLATE_MODE* in/out
    ByRef nRetransmitMode As UInteger   ' SNMP_STATUS* in/out
) As UInteger
End Function

' nMajorVersion : DWORD* in/out
' nMinorVersion : DWORD* in/out
' nLevel : DWORD* in/out
' nTranslateMode : SNMP_API_TRANSLATE_MODE* in/out
' nRetransmitMode : SNMP_STATUS* in/out
Declare PtrSafe Function SnmpStartupEx Lib "wsnmp32" ( _
    ByRef nMajorVersion As Long, _
    ByRef nMinorVersion As Long, _
    ByRef nLevel As Long, _
    ByRef nTranslateMode As Long, _
    ByRef nRetransmitMode 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

SnmpStartupEx = ctypes.windll.wsnmp32.SnmpStartupEx
SnmpStartupEx.restype = wintypes.DWORD
SnmpStartupEx.argtypes = [
    ctypes.POINTER(wintypes.DWORD),  # nMajorVersion : DWORD* in/out
    ctypes.POINTER(wintypes.DWORD),  # nMinorVersion : DWORD* in/out
    ctypes.POINTER(wintypes.DWORD),  # nLevel : DWORD* in/out
    ctypes.c_void_p,  # nTranslateMode : SNMP_API_TRANSLATE_MODE* in/out
    ctypes.c_void_p,  # nRetransmitMode : SNMP_STATUS* in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('wsnmp32.dll')
SnmpStartupEx = Fiddle::Function.new(
  lib['SnmpStartupEx'],
  [
    Fiddle::TYPE_VOIDP,  # nMajorVersion : DWORD* in/out
    Fiddle::TYPE_VOIDP,  # nMinorVersion : DWORD* in/out
    Fiddle::TYPE_VOIDP,  # nLevel : DWORD* in/out
    Fiddle::TYPE_VOIDP,  # nTranslateMode : SNMP_API_TRANSLATE_MODE* in/out
    Fiddle::TYPE_VOIDP,  # nRetransmitMode : SNMP_STATUS* in/out
  ],
  -Fiddle::TYPE_INT)

#[link(name = "wsnmp32")]
extern "system" {
    fn SnmpStartupEx(
        nMajorVersion: *mut u32,  // DWORD* in/out
        nMinorVersion: *mut u32,  // DWORD* in/out
        nLevel: *mut u32,  // DWORD* in/out
        nTranslateMode: *mut u32,  // SNMP_API_TRANSLATE_MODE* in/out
        nRetransmitMode: *mut u32  // SNMP_STATUS* in/out
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("wsnmp32.dll")]
public static extern uint SnmpStartupEx(ref uint nMajorVersion, ref uint nMinorVersion, ref uint nLevel, ref uint nTranslateMode, ref uint nRetransmitMode);
"@
$api = Add-Type -MemberDefinition $sig -Name 'wsnmp32_SnmpStartupEx' -Namespace Win32 -PassThru
# $api::SnmpStartupEx(nMajorVersion, nMinorVersion, nLevel, nTranslateMode, nRetransmitMode)

#uselib "wsnmp32.dll"
#func global SnmpStartupEx "SnmpStartupEx" sptr, sptr, sptr, sptr, sptr
; SnmpStartupEx varptr(nMajorVersion), varptr(nMinorVersion), varptr(nLevel), nTranslateMode, nRetransmitMode   ; 戻り値は stat
; nMajorVersion : DWORD* in/out -> "sptr"
; nMinorVersion : DWORD* in/out -> "sptr"
; nLevel : DWORD* in/out -> "sptr"
; nTranslateMode : SNMP_API_TRANSLATE_MODE* in/out -> "sptr"
; nRetransmitMode : SNMP_STATUS* 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 SnmpStartupEx "SnmpStartupEx" var, var, var, int, int
; res = SnmpStartupEx(nMajorVersion, nMinorVersion, nLevel, nTranslateMode, nRetransmitMode)
; nMajorVersion : DWORD* in/out -> "var"
; nMinorVersion : DWORD* in/out -> "var"
; nLevel : DWORD* in/out -> "var"
; nTranslateMode : SNMP_API_TRANSLATE_MODE* in/out -> "int"
; nRetransmitMode : SNMP_STATUS* in/out -> "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。

; DWORD SnmpStartupEx(DWORD* nMajorVersion, DWORD* nMinorVersion, DWORD* nLevel, SNMP_API_TRANSLATE_MODE* nTranslateMode, SNMP_STATUS* nRetransmitMode)
#uselib "wsnmp32.dll"
#cfunc global SnmpStartupEx "SnmpStartupEx" var, var, var, int, int
; res = SnmpStartupEx(nMajorVersion, nMinorVersion, nLevel, nTranslateMode, nRetransmitMode)
; nMajorVersion : DWORD* in/out -> "var"
; nMinorVersion : DWORD* in/out -> "var"
; nLevel : DWORD* in/out -> "var"
; nTranslateMode : SNMP_API_TRANSLATE_MODE* in/out -> "int"
; nRetransmitMode : SNMP_STATUS* in/out -> "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 (
	wsnmp32 = windows.NewLazySystemDLL("wsnmp32.dll")
	procSnmpStartupEx = wsnmp32.NewProc("SnmpStartupEx")
)

// nMajorVersion (DWORD* in/out), nMinorVersion (DWORD* in/out), nLevel (DWORD* in/out), nTranslateMode (SNMP_API_TRANSLATE_MODE* in/out), nRetransmitMode (SNMP_STATUS* in/out)
r1, _, err := procSnmpStartupEx.Call(
	uintptr(nMajorVersion),
	uintptr(nMinorVersion),
	uintptr(nLevel),
	uintptr(nTranslateMode),
	uintptr(nRetransmitMode),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function SnmpStartupEx(
  nMajorVersion: Pointer;   // DWORD* in/out
  nMinorVersion: Pointer;   // DWORD* in/out
  nLevel: Pointer;   // DWORD* in/out
  nTranslateMode: Pointer;   // SNMP_API_TRANSLATE_MODE* in/out
  nRetransmitMode: Pointer   // SNMP_STATUS* in/out
): DWORD; stdcall;
  external 'wsnmp32.dll' name 'SnmpStartupEx';

result := DllCall("wsnmp32\SnmpStartupEx"
    , "Ptr", nMajorVersion   ; DWORD* in/out
    , "Ptr", nMinorVersion   ; DWORD* in/out
    , "Ptr", nLevel   ; DWORD* in/out
    , "Ptr", nTranslateMode   ; SNMP_API_TRANSLATE_MODE* in/out
    , "Ptr", nRetransmitMode   ; SNMP_STATUS* in/out
    , "UInt")   ; return: DWORD

●SnmpStartupEx(nMajorVersion, nMinorVersion, nLevel, nTranslateMode, nRetransmitMode) = DLL("wsnmp32.dll", "dword SnmpStartupEx(void*, void*, void*, void*, void*)")
# 呼び出し: SnmpStartupEx(nMajorVersion, nMinorVersion, nLevel, nTranslateMode, nRetransmitMode)
# nMajorVersion : DWORD* in/out -> "void*"
# nMinorVersion : DWORD* in/out -> "void*"
# nLevel : DWORD* in/out -> "void*"
# nTranslateMode : SNMP_API_TRANSLATE_MODE* in/out -> "void*"
# nRetransmitMode : SNMP_STATUS* 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)。