SnmpUtilMemReAlloc

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

void* SnmpUtilMemReAlloc(
    void* pMem,
    DWORD nBytes
);

<DllImport("snmpapi.dll", ExactSpelling:=True)>
Public Shared Function SnmpUtilMemReAlloc(
    pMem As IntPtr,   ' void* in/out
    nBytes As UInteger   ' DWORD
) As IntPtr
End Function

' pMem : void* in/out
' nBytes : DWORD
Declare PtrSafe Function SnmpUtilMemReAlloc Lib "snmpapi" ( _
    ByVal pMem As LongPtr, _
    ByVal nBytes As Long) As LongPtr
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

SnmpUtilMemReAlloc = ctypes.windll.snmpapi.SnmpUtilMemReAlloc
SnmpUtilMemReAlloc.restype = ctypes.c_void_p
SnmpUtilMemReAlloc.argtypes = [
    ctypes.POINTER(None),  # pMem : void* in/out
    wintypes.DWORD,  # nBytes : DWORD
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('snmpapi.dll')
SnmpUtilMemReAlloc = Fiddle::Function.new(
  lib['SnmpUtilMemReAlloc'],
  [
    Fiddle::TYPE_VOIDP,  # pMem : void* in/out
    -Fiddle::TYPE_INT,  # nBytes : DWORD
  ],
  Fiddle::TYPE_VOIDP)

#[link(name = "snmpapi")]
extern "system" {
    fn SnmpUtilMemReAlloc(
        pMem: *mut (),  // void* in/out
        nBytes: u32  // DWORD
    ) -> *mut ();
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("snmpapi.dll")]
public static extern IntPtr SnmpUtilMemReAlloc(IntPtr pMem, uint nBytes);
"@
$api = Add-Type -MemberDefinition $sig -Name 'snmpapi_SnmpUtilMemReAlloc' -Namespace Win32 -PassThru
# $api::SnmpUtilMemReAlloc(pMem, nBytes)

#uselib "snmpapi.dll"
#func global SnmpUtilMemReAlloc "SnmpUtilMemReAlloc" sptr, sptr
; SnmpUtilMemReAlloc pMem, nBytes   ; 戻り値は stat
; pMem : void* in/out -> "sptr"
; nBytes : DWORD -> "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 SnmpUtilMemReAlloc "SnmpUtilMemReAlloc" sptr, int
; res = SnmpUtilMemReAlloc(pMem, nBytes)
; pMem : void* in/out -> "sptr"
; nBytes : DWORD -> "int"

; void* SnmpUtilMemReAlloc(void* pMem, DWORD nBytes)
#uselib "snmpapi.dll"
#cfunc global SnmpUtilMemReAlloc "SnmpUtilMemReAlloc" intptr, int
; res = SnmpUtilMemReAlloc(pMem, nBytes)
; pMem : void* in/out -> "intptr"
; nBytes : DWORD -> "int"

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

var (
	snmpapi = windows.NewLazySystemDLL("snmpapi.dll")
	procSnmpUtilMemReAlloc = snmpapi.NewProc("SnmpUtilMemReAlloc")
)

// pMem (void* in/out), nBytes (DWORD)
r1, _, err := procSnmpUtilMemReAlloc.Call(
	uintptr(pMem),
	uintptr(nBytes),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // void*

function SnmpUtilMemReAlloc(
  pMem: Pointer;   // void* in/out
  nBytes: DWORD   // DWORD
): Pointer; stdcall;
  external 'snmpapi.dll' name 'SnmpUtilMemReAlloc';

result := DllCall("snmpapi\SnmpUtilMemReAlloc"
    , "Ptr", pMem   ; void* in/out
    , "UInt", nBytes   ; DWORD
    , "Ptr")   ; return: void*

●SnmpUtilMemReAlloc(pMem, nBytes) = DLL("snmpapi.dll", "void* SnmpUtilMemReAlloc(void*, dword)")
# 呼び出し: SnmpUtilMemReAlloc(pMem, nBytes)
# pMem : void* in/out -> "void*"
# nBytes : DWORD -> "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)。