SnmpGetLastError

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

DWORD SnmpGetLastError(
    INT_PTR session
);

<DllImport("wsnmp32.dll", ExactSpelling:=True)>
Public Shared Function SnmpGetLastError(
    session As IntPtr   ' INT_PTR
) As UInteger
End Function

' session : INT_PTR
Declare PtrSafe Function SnmpGetLastError Lib "wsnmp32" ( _
    ByVal session 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

SnmpGetLastError = ctypes.windll.wsnmp32.SnmpGetLastError
SnmpGetLastError.restype = wintypes.DWORD
SnmpGetLastError.argtypes = [
    ctypes.c_ssize_t,  # session : INT_PTR
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('wsnmp32.dll')
SnmpGetLastError = Fiddle::Function.new(
  lib['SnmpGetLastError'],
  [
    Fiddle::TYPE_INTPTR_T,  # session : INT_PTR
  ],
  -Fiddle::TYPE_INT)

#[link(name = "wsnmp32")]
extern "system" {
    fn SnmpGetLastError(
        session: isize  // INT_PTR
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("wsnmp32.dll")]
public static extern uint SnmpGetLastError(IntPtr session);
"@
$api = Add-Type -MemberDefinition $sig -Name 'wsnmp32_SnmpGetLastError' -Namespace Win32 -PassThru
# $api::SnmpGetLastError(session)

#uselib "wsnmp32.dll"
#func global SnmpGetLastError "SnmpGetLastError" sptr
; SnmpGetLastError session   ; 戻り値は stat
; session : INT_PTR -> "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 SnmpGetLastError "SnmpGetLastError" sptr
; res = SnmpGetLastError(session)
; session : INT_PTR -> "sptr"

; DWORD SnmpGetLastError(INT_PTR session)
#uselib "wsnmp32.dll"
#cfunc global SnmpGetLastError "SnmpGetLastError" intptr
; res = SnmpGetLastError(session)
; session : INT_PTR -> "intptr"

import (
	"golang.org/x/sys/windows"
	"unsafe"
)

var (
	wsnmp32 = windows.NewLazySystemDLL("wsnmp32.dll")
	procSnmpGetLastError = wsnmp32.NewProc("SnmpGetLastError")
)

// session (INT_PTR)
r1, _, err := procSnmpGetLastError.Call(
	uintptr(session),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function SnmpGetLastError(
  session: NativeInt   // INT_PTR
): DWORD; stdcall;
  external 'wsnmp32.dll' name 'SnmpGetLastError';

result := DllCall("wsnmp32\SnmpGetLastError"
    , "Ptr", session   ; INT_PTR
    , "UInt")   ; return: DWORD

●SnmpGetLastError(session) = DLL("wsnmp32.dll", "dword SnmpGetLastError(int)")
# 呼び出し: SnmpGetLastError(session)
# session : INT_PTR -> "int"
# 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)。