SnmpRegister

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

DWORD SnmpRegister(
    INT_PTR session,
    INT_PTR srcEntity,
    INT_PTR dstEntity,
    INT_PTR context,
    smiOID* notification,
    SNMP_STATUS state
);

<DllImport("wsnmp32.dll", ExactSpelling:=True)>
Public Shared Function SnmpRegister(
    session As IntPtr,   ' INT_PTR
    srcEntity As IntPtr,   ' INT_PTR
    dstEntity As IntPtr,   ' INT_PTR
    context As IntPtr,   ' INT_PTR
    notification As IntPtr,   ' smiOID* in/out
    state As UInteger   ' SNMP_STATUS
) As UInteger
End Function

' session : INT_PTR
' srcEntity : INT_PTR
' dstEntity : INT_PTR
' context : INT_PTR
' notification : smiOID* in/out
' state : SNMP_STATUS
Declare PtrSafe Function SnmpRegister Lib "wsnmp32" ( _
    ByVal session As LongPtr, _
    ByVal srcEntity As LongPtr, _
    ByVal dstEntity As LongPtr, _
    ByVal context As LongPtr, _
    ByVal notification As LongPtr, _
    ByVal state 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

SnmpRegister = ctypes.windll.wsnmp32.SnmpRegister
SnmpRegister.restype = wintypes.DWORD
SnmpRegister.argtypes = [
    ctypes.c_ssize_t,  # session : INT_PTR
    ctypes.c_ssize_t,  # srcEntity : INT_PTR
    ctypes.c_ssize_t,  # dstEntity : INT_PTR
    ctypes.c_ssize_t,  # context : INT_PTR
    ctypes.c_void_p,  # notification : smiOID* in/out
    wintypes.DWORD,  # state : SNMP_STATUS
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('wsnmp32.dll')
SnmpRegister = Fiddle::Function.new(
  lib['SnmpRegister'],
  [
    Fiddle::TYPE_INTPTR_T,  # session : INT_PTR
    Fiddle::TYPE_INTPTR_T,  # srcEntity : INT_PTR
    Fiddle::TYPE_INTPTR_T,  # dstEntity : INT_PTR
    Fiddle::TYPE_INTPTR_T,  # context : INT_PTR
    Fiddle::TYPE_VOIDP,  # notification : smiOID* in/out
    -Fiddle::TYPE_INT,  # state : SNMP_STATUS
  ],
  -Fiddle::TYPE_INT)

#[link(name = "wsnmp32")]
extern "system" {
    fn SnmpRegister(
        session: isize,  // INT_PTR
        srcEntity: isize,  // INT_PTR
        dstEntity: isize,  // INT_PTR
        context: isize,  // INT_PTR
        notification: *mut smiOID,  // smiOID* in/out
        state: u32  // SNMP_STATUS
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("wsnmp32.dll")]
public static extern uint SnmpRegister(IntPtr session, IntPtr srcEntity, IntPtr dstEntity, IntPtr context, IntPtr notification, uint state);
"@
$api = Add-Type -MemberDefinition $sig -Name 'wsnmp32_SnmpRegister' -Namespace Win32 -PassThru
# $api::SnmpRegister(session, srcEntity, dstEntity, context, notification, state)

#uselib "wsnmp32.dll"
#func global SnmpRegister "SnmpRegister" sptr, sptr, sptr, sptr, sptr, sptr
; SnmpRegister session, srcEntity, dstEntity, context, varptr(notification), state   ; 戻り値は stat
; session : INT_PTR -> "sptr"
; srcEntity : INT_PTR -> "sptr"
; dstEntity : INT_PTR -> "sptr"
; context : INT_PTR -> "sptr"
; notification : smiOID* in/out -> "sptr"
; state : SNMP_STATUS -> "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 SnmpRegister "SnmpRegister" sptr, sptr, sptr, sptr, var, int
; res = SnmpRegister(session, srcEntity, dstEntity, context, notification, state)
; session : INT_PTR -> "sptr"
; srcEntity : INT_PTR -> "sptr"
; dstEntity : INT_PTR -> "sptr"
; context : INT_PTR -> "sptr"
; notification : smiOID* in/out -> "var"
; state : SNMP_STATUS -> "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 SnmpRegister(INT_PTR session, INT_PTR srcEntity, INT_PTR dstEntity, INT_PTR context, smiOID* notification, SNMP_STATUS state)
#uselib "wsnmp32.dll"
#cfunc global SnmpRegister "SnmpRegister" intptr, intptr, intptr, intptr, var, int
; res = SnmpRegister(session, srcEntity, dstEntity, context, notification, state)
; session : INT_PTR -> "intptr"
; srcEntity : INT_PTR -> "intptr"
; dstEntity : INT_PTR -> "intptr"
; context : INT_PTR -> "intptr"
; notification : smiOID* in/out -> "var"
; state : SNMP_STATUS -> "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")
	procSnmpRegister = wsnmp32.NewProc("SnmpRegister")
)

// session (INT_PTR), srcEntity (INT_PTR), dstEntity (INT_PTR), context (INT_PTR), notification (smiOID* in/out), state (SNMP_STATUS)
r1, _, err := procSnmpRegister.Call(
	uintptr(session),
	uintptr(srcEntity),
	uintptr(dstEntity),
	uintptr(context),
	uintptr(notification),
	uintptr(state),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function SnmpRegister(
  session: NativeInt;   // INT_PTR
  srcEntity: NativeInt;   // INT_PTR
  dstEntity: NativeInt;   // INT_PTR
  context: NativeInt;   // INT_PTR
  notification: Pointer;   // smiOID* in/out
  state: DWORD   // SNMP_STATUS
): DWORD; stdcall;
  external 'wsnmp32.dll' name 'SnmpRegister';

result := DllCall("wsnmp32\SnmpRegister"
    , "Ptr", session   ; INT_PTR
    , "Ptr", srcEntity   ; INT_PTR
    , "Ptr", dstEntity   ; INT_PTR
    , "Ptr", context   ; INT_PTR
    , "Ptr", notification   ; smiOID* in/out
    , "UInt", state   ; SNMP_STATUS
    , "UInt")   ; return: DWORD

●SnmpRegister(session, srcEntity, dstEntity, context, notification, state) = DLL("wsnmp32.dll", "dword SnmpRegister(int, int, int, int, void*, dword)")
# 呼び出し: SnmpRegister(session, srcEntity, dstEntity, context, notification, state)
# session : INT_PTR -> "int"
# srcEntity : INT_PTR -> "int"
# dstEntity : INT_PTR -> "int"
# context : INT_PTR -> "int"
# notification : smiOID* in/out -> "void*"
# state : SNMP_STATUS -> "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)。