SnmpGetPduData

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

DWORD SnmpGetPduData(
    INT_PTR PDU,
    SNMP_PDU_TYPE* PDU_type,
    INT* request_id,
    SNMP_ERROR* error_status,
    INT* error_index,
    INT_PTR* varbindlist
);

<DllImport("wsnmp32.dll", ExactSpelling:=True)>
Public Shared Function SnmpGetPduData(
    PDU As IntPtr,   ' INT_PTR
    ByRef PDU_type As UInteger,   ' SNMP_PDU_TYPE* in/out
    ByRef request_id As Integer,   ' INT* in/out
    ByRef error_status As UInteger,   ' SNMP_ERROR* in/out
    ByRef error_index As Integer,   ' INT* in/out
    ByRef varbindlist As IntPtr   ' INT_PTR* in/out
) As UInteger
End Function

' PDU : INT_PTR
' PDU_type : SNMP_PDU_TYPE* in/out
' request_id : INT* in/out
' error_status : SNMP_ERROR* in/out
' error_index : INT* in/out
' varbindlist : INT_PTR* in/out
Declare PtrSafe Function SnmpGetPduData Lib "wsnmp32" ( _
    ByVal PDU As LongPtr, _
    ByRef PDU_type As Long, _
    ByRef request_id As Long, _
    ByRef error_status As Long, _
    ByRef error_index As Long, _
    ByRef varbindlist 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

SnmpGetPduData = ctypes.windll.wsnmp32.SnmpGetPduData
SnmpGetPduData.restype = wintypes.DWORD
SnmpGetPduData.argtypes = [
    ctypes.c_ssize_t,  # PDU : INT_PTR
    ctypes.c_void_p,  # PDU_type : SNMP_PDU_TYPE* in/out
    ctypes.POINTER(ctypes.c_int),  # request_id : INT* in/out
    ctypes.c_void_p,  # error_status : SNMP_ERROR* in/out
    ctypes.POINTER(ctypes.c_int),  # error_index : INT* in/out
    ctypes.POINTER(ctypes.c_ssize_t),  # varbindlist : INT_PTR* in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('wsnmp32.dll')
SnmpGetPduData = Fiddle::Function.new(
  lib['SnmpGetPduData'],
  [
    Fiddle::TYPE_INTPTR_T,  # PDU : INT_PTR
    Fiddle::TYPE_VOIDP,  # PDU_type : SNMP_PDU_TYPE* in/out
    Fiddle::TYPE_VOIDP,  # request_id : INT* in/out
    Fiddle::TYPE_VOIDP,  # error_status : SNMP_ERROR* in/out
    Fiddle::TYPE_VOIDP,  # error_index : INT* in/out
    Fiddle::TYPE_VOIDP,  # varbindlist : INT_PTR* in/out
  ],
  -Fiddle::TYPE_INT)

#[link(name = "wsnmp32")]
extern "system" {
    fn SnmpGetPduData(
        PDU: isize,  // INT_PTR
        PDU_type: *mut u32,  // SNMP_PDU_TYPE* in/out
        request_id: *mut i32,  // INT* in/out
        error_status: *mut u32,  // SNMP_ERROR* in/out
        error_index: *mut i32,  // INT* in/out
        varbindlist: *mut isize  // INT_PTR* in/out
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("wsnmp32.dll")]
public static extern uint SnmpGetPduData(IntPtr PDU, ref uint PDU_type, ref int request_id, ref uint error_status, ref int error_index, ref IntPtr varbindlist);
"@
$api = Add-Type -MemberDefinition $sig -Name 'wsnmp32_SnmpGetPduData' -Namespace Win32 -PassThru
# $api::SnmpGetPduData(PDU, PDU_type, request_id, error_status, error_index, varbindlist)

#uselib "wsnmp32.dll"
#func global SnmpGetPduData "SnmpGetPduData" sptr, sptr, sptr, sptr, sptr, sptr
; SnmpGetPduData PDU, PDU_type, varptr(request_id), error_status, varptr(error_index), varptr(varbindlist)   ; 戻り値は stat
; PDU : INT_PTR -> "sptr"
; PDU_type : SNMP_PDU_TYPE* in/out -> "sptr"
; request_id : INT* in/out -> "sptr"
; error_status : SNMP_ERROR* in/out -> "sptr"
; error_index : INT* in/out -> "sptr"
; varbindlist : INT_PTR* 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 SnmpGetPduData "SnmpGetPduData" sptr, int, var, int, var, var
; res = SnmpGetPduData(PDU, PDU_type, request_id, error_status, error_index, varbindlist)
; PDU : INT_PTR -> "sptr"
; PDU_type : SNMP_PDU_TYPE* in/out -> "int"
; request_id : INT* in/out -> "var"
; error_status : SNMP_ERROR* in/out -> "int"
; error_index : INT* in/out -> "var"
; varbindlist : INT_PTR* 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 SnmpGetPduData(INT_PTR PDU, SNMP_PDU_TYPE* PDU_type, INT* request_id, SNMP_ERROR* error_status, INT* error_index, INT_PTR* varbindlist)
#uselib "wsnmp32.dll"
#cfunc global SnmpGetPduData "SnmpGetPduData" intptr, int, var, int, var, var
; res = SnmpGetPduData(PDU, PDU_type, request_id, error_status, error_index, varbindlist)
; PDU : INT_PTR -> "intptr"
; PDU_type : SNMP_PDU_TYPE* in/out -> "int"
; request_id : INT* in/out -> "var"
; error_status : SNMP_ERROR* in/out -> "int"
; error_index : INT* in/out -> "var"
; varbindlist : INT_PTR* 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")
	procSnmpGetPduData = wsnmp32.NewProc("SnmpGetPduData")
)

// PDU (INT_PTR), PDU_type (SNMP_PDU_TYPE* in/out), request_id (INT* in/out), error_status (SNMP_ERROR* in/out), error_index (INT* in/out), varbindlist (INT_PTR* in/out)
r1, _, err := procSnmpGetPduData.Call(
	uintptr(PDU),
	uintptr(PDU_type),
	uintptr(request_id),
	uintptr(error_status),
	uintptr(error_index),
	uintptr(varbindlist),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function SnmpGetPduData(
  PDU: NativeInt;   // INT_PTR
  PDU_type: Pointer;   // SNMP_PDU_TYPE* in/out
  request_id: Pointer;   // INT* in/out
  error_status: Pointer;   // SNMP_ERROR* in/out
  error_index: Pointer;   // INT* in/out
  varbindlist: Pointer   // INT_PTR* in/out
): DWORD; stdcall;
  external 'wsnmp32.dll' name 'SnmpGetPduData';

result := DllCall("wsnmp32\SnmpGetPduData"
    , "Ptr", PDU   ; INT_PTR
    , "Ptr", PDU_type   ; SNMP_PDU_TYPE* in/out
    , "Ptr", request_id   ; INT* in/out
    , "Ptr", error_status   ; SNMP_ERROR* in/out
    , "Ptr", error_index   ; INT* in/out
    , "Ptr", varbindlist   ; INT_PTR* in/out
    , "UInt")   ; return: DWORD

●SnmpGetPduData(PDU, PDU_type, request_id, error_status, error_index, varbindlist) = DLL("wsnmp32.dll", "dword SnmpGetPduData(int, void*, void*, void*, void*, void*)")
# 呼び出し: SnmpGetPduData(PDU, PDU_type, request_id, error_status, error_index, varbindlist)
# PDU : INT_PTR -> "int"
# PDU_type : SNMP_PDU_TYPE* in/out -> "void*"
# request_id : INT* in/out -> "void*"
# error_status : SNMP_ERROR* in/out -> "void*"
# error_index : INT* in/out -> "void*"
# varbindlist : INT_PTR* 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)。