SnmpUtilOctetsCpy

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

INT SnmpUtilOctetsCpy(
    AsnOctetString* pOctetsDst,
    AsnOctetString* pOctetsSrc
);

<DllImport("snmpapi.dll", ExactSpelling:=True)>
Public Shared Function SnmpUtilOctetsCpy(
    pOctetsDst As IntPtr,   ' AsnOctetString* in/out
    pOctetsSrc As IntPtr   ' AsnOctetString* in/out
) As Integer
End Function

' pOctetsDst : AsnOctetString* in/out
' pOctetsSrc : AsnOctetString* in/out
Declare PtrSafe Function SnmpUtilOctetsCpy Lib "snmpapi" ( _
    ByVal pOctetsDst As LongPtr, _
    ByVal pOctetsSrc 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

SnmpUtilOctetsCpy = ctypes.windll.snmpapi.SnmpUtilOctetsCpy
SnmpUtilOctetsCpy.restype = ctypes.c_int
SnmpUtilOctetsCpy.argtypes = [
    ctypes.c_void_p,  # pOctetsDst : AsnOctetString* in/out
    ctypes.c_void_p,  # pOctetsSrc : AsnOctetString* in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('snmpapi.dll')
SnmpUtilOctetsCpy = Fiddle::Function.new(
  lib['SnmpUtilOctetsCpy'],
  [
    Fiddle::TYPE_VOIDP,  # pOctetsDst : AsnOctetString* in/out
    Fiddle::TYPE_VOIDP,  # pOctetsSrc : AsnOctetString* in/out
  ],
  Fiddle::TYPE_INT)

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

$sig = @"
[DllImport("snmpapi.dll")]
public static extern int SnmpUtilOctetsCpy(IntPtr pOctetsDst, IntPtr pOctetsSrc);
"@
$api = Add-Type -MemberDefinition $sig -Name 'snmpapi_SnmpUtilOctetsCpy' -Namespace Win32 -PassThru
# $api::SnmpUtilOctetsCpy(pOctetsDst, pOctetsSrc)

#uselib "snmpapi.dll"
#func global SnmpUtilOctetsCpy "SnmpUtilOctetsCpy" sptr, sptr
; SnmpUtilOctetsCpy varptr(pOctetsDst), varptr(pOctetsSrc)   ; 戻り値は stat
; pOctetsDst : AsnOctetString* in/out -> "sptr"
; pOctetsSrc : AsnOctetString* 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 SnmpUtilOctetsCpy "SnmpUtilOctetsCpy" var, var
; res = SnmpUtilOctetsCpy(pOctetsDst, pOctetsSrc)
; pOctetsDst : AsnOctetString* in/out -> "var"
; pOctetsSrc : AsnOctetString* 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 SnmpUtilOctetsCpy(AsnOctetString* pOctetsDst, AsnOctetString* pOctetsSrc)
#uselib "snmpapi.dll"
#cfunc global SnmpUtilOctetsCpy "SnmpUtilOctetsCpy" var, var
; res = SnmpUtilOctetsCpy(pOctetsDst, pOctetsSrc)
; pOctetsDst : AsnOctetString* in/out -> "var"
; pOctetsSrc : AsnOctetString* 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")
	procSnmpUtilOctetsCpy = snmpapi.NewProc("SnmpUtilOctetsCpy")
)

// pOctetsDst (AsnOctetString* in/out), pOctetsSrc (AsnOctetString* in/out)
r1, _, err := procSnmpUtilOctetsCpy.Call(
	uintptr(pOctetsDst),
	uintptr(pOctetsSrc),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // INT

function SnmpUtilOctetsCpy(
  pOctetsDst: Pointer;   // AsnOctetString* in/out
  pOctetsSrc: Pointer   // AsnOctetString* in/out
): Integer; stdcall;
  external 'snmpapi.dll' name 'SnmpUtilOctetsCpy';

result := DllCall("snmpapi\SnmpUtilOctetsCpy"
    , "Ptr", pOctetsDst   ; AsnOctetString* in/out
    , "Ptr", pOctetsSrc   ; AsnOctetString* in/out
    , "Int")   ; return: INT

●SnmpUtilOctetsCpy(pOctetsDst, pOctetsSrc) = DLL("snmpapi.dll", "int SnmpUtilOctetsCpy(void*, void*)")
# 呼び出し: SnmpUtilOctetsCpy(pOctetsDst, pOctetsSrc)
# pOctetsDst : AsnOctetString* in/out -> "void*"
# pOctetsSrc : AsnOctetString* 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)。