GetIScsiTargetInformationW

// ISCSIDSC.dll  (Unicode / -W)
#include <windows.h>

DWORD GetIScsiTargetInformationW(
    LPWSTR TargetName,
    LPWSTR DiscoveryMechanism,   // optional
    TARGET_INFORMATION_CLASS InfoClass,
    DWORD* BufferSize,
    void* Buffer
);

<DllImport("ISCSIDSC.dll", CharSet:=CharSet.Unicode, ExactSpelling:=True)>
Public Shared Function GetIScsiTargetInformationW(
    <MarshalAs(UnmanagedType.LPWStr)> TargetName As String,   ' LPWSTR
    <MarshalAs(UnmanagedType.LPWStr)> DiscoveryMechanism As String,   ' LPWSTR optional
    InfoClass As Integer,   ' TARGET_INFORMATION_CLASS
    ByRef BufferSize As UInteger,   ' DWORD* in/out
    Buffer As IntPtr   ' void* in/out
) As UInteger
End Function

' TargetName : LPWSTR
' DiscoveryMechanism : LPWSTR optional
' InfoClass : TARGET_INFORMATION_CLASS
' BufferSize : DWORD* in/out
' Buffer : void* in/out
Declare PtrSafe Function GetIScsiTargetInformationW Lib "iscsidsc" ( _
    ByVal TargetName As LongPtr, _
    ByVal DiscoveryMechanism As LongPtr, _
    ByVal InfoClass As Long, _
    ByRef BufferSize As Long, _
    ByVal Buffer As LongPtr) As Long
' Unicode(W): 文字列は ByVal As LongPtr とし StrPtr(unicodeStr) を渡す
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

GetIScsiTargetInformationW = ctypes.windll.iscsidsc.GetIScsiTargetInformationW
GetIScsiTargetInformationW.restype = wintypes.DWORD
GetIScsiTargetInformationW.argtypes = [
    wintypes.LPCWSTR,  # TargetName : LPWSTR
    wintypes.LPCWSTR,  # DiscoveryMechanism : LPWSTR optional
    ctypes.c_int,  # InfoClass : TARGET_INFORMATION_CLASS
    ctypes.POINTER(wintypes.DWORD),  # BufferSize : DWORD* in/out
    ctypes.POINTER(None),  # Buffer : void* in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('ISCSIDSC.dll')
GetIScsiTargetInformationW = Fiddle::Function.new(
  lib['GetIScsiTargetInformationW'],
  [
    Fiddle::TYPE_VOIDP,  # TargetName : LPWSTR
    Fiddle::TYPE_VOIDP,  # DiscoveryMechanism : LPWSTR optional
    Fiddle::TYPE_INT,  # InfoClass : TARGET_INFORMATION_CLASS
    Fiddle::TYPE_VOIDP,  # BufferSize : DWORD* in/out
    Fiddle::TYPE_VOIDP,  # Buffer : void* in/out
  ],
  -Fiddle::TYPE_INT)
# Wide strings: pass str.encode("UTF-16LE") + "\x00\x00"

#[link(name = "iscsidsc")]
extern "system" {
    fn GetIScsiTargetInformationW(
        TargetName: *mut u16,  // LPWSTR
        DiscoveryMechanism: *mut u16,  // LPWSTR optional
        InfoClass: i32,  // TARGET_INFORMATION_CLASS
        BufferSize: *mut u32,  // DWORD* in/out
        Buffer: *mut ()  // void* in/out
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("ISCSIDSC.dll", CharSet = CharSet.Unicode)]
public static extern uint GetIScsiTargetInformationW([MarshalAs(UnmanagedType.LPWStr)] string TargetName, [MarshalAs(UnmanagedType.LPWStr)] string DiscoveryMechanism, int InfoClass, ref uint BufferSize, IntPtr Buffer);
"@
$api = Add-Type -MemberDefinition $sig -Name 'ISCSIDSC_GetIScsiTargetInformationW' -Namespace Win32 -PassThru
# $api::GetIScsiTargetInformationW(TargetName, DiscoveryMechanism, InfoClass, BufferSize, Buffer)

#uselib "ISCSIDSC.dll"
#func global GetIScsiTargetInformationW "GetIScsiTargetInformationW" wptr, wptr, wptr, wptr, wptr
; GetIScsiTargetInformationW TargetName, DiscoveryMechanism, InfoClass, varptr(BufferSize), Buffer   ; 戻り値は stat
; TargetName : LPWSTR -> "wptr"
; DiscoveryMechanism : LPWSTR optional -> "wptr"
; InfoClass : TARGET_INFORMATION_CLASS -> "wptr"
; BufferSize : DWORD* in/out -> "wptr"
; Buffer : void* in/out -> "wptr"
; ※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 "ISCSIDSC.dll"
#cfunc global GetIScsiTargetInformationW "GetIScsiTargetInformationW" wstr, wstr, int, var, sptr
; res = GetIScsiTargetInformationW(TargetName, DiscoveryMechanism, InfoClass, BufferSize, Buffer)
; TargetName : LPWSTR -> "wstr"
; DiscoveryMechanism : LPWSTR optional -> "wstr"
; InfoClass : TARGET_INFORMATION_CLASS -> "int"
; BufferSize : DWORD* in/out -> "var"
; Buffer : void* in/out -> "sptr"
; ※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 GetIScsiTargetInformationW(LPWSTR TargetName, LPWSTR DiscoveryMechanism, TARGET_INFORMATION_CLASS InfoClass, DWORD* BufferSize, void* Buffer)
#uselib "ISCSIDSC.dll"
#cfunc global GetIScsiTargetInformationW "GetIScsiTargetInformationW" wstr, wstr, int, var, intptr
; res = GetIScsiTargetInformationW(TargetName, DiscoveryMechanism, InfoClass, BufferSize, Buffer)
; TargetName : LPWSTR -> "wstr"
; DiscoveryMechanism : LPWSTR optional -> "wstr"
; InfoClass : TARGET_INFORMATION_CLASS -> "int"
; BufferSize : DWORD* in/out -> "var"
; Buffer : void* in/out -> "intptr"
; ※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 (
	iscsidsc = windows.NewLazySystemDLL("ISCSIDSC.dll")
	procGetIScsiTargetInformationW = iscsidsc.NewProc("GetIScsiTargetInformationW")
)

// TargetName (LPWSTR), DiscoveryMechanism (LPWSTR optional), InfoClass (TARGET_INFORMATION_CLASS), BufferSize (DWORD* in/out), Buffer (void* in/out)
r1, _, err := procGetIScsiTargetInformationW.Call(
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(TargetName))),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(DiscoveryMechanism))),
	uintptr(InfoClass),
	uintptr(BufferSize),
	uintptr(Buffer),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function GetIScsiTargetInformationW(
  TargetName: PWideChar;   // LPWSTR
  DiscoveryMechanism: PWideChar;   // LPWSTR optional
  InfoClass: Integer;   // TARGET_INFORMATION_CLASS
  BufferSize: Pointer;   // DWORD* in/out
  Buffer: Pointer   // void* in/out
): DWORD; stdcall;
  external 'ISCSIDSC.dll' name 'GetIScsiTargetInformationW';

result := DllCall("ISCSIDSC\GetIScsiTargetInformationW"
    , "WStr", TargetName   ; LPWSTR
    , "WStr", DiscoveryMechanism   ; LPWSTR optional
    , "Int", InfoClass   ; TARGET_INFORMATION_CLASS
    , "Ptr", BufferSize   ; DWORD* in/out
    , "Ptr", Buffer   ; void* in/out
    , "UInt")   ; return: DWORD

●GetIScsiTargetInformationW(TargetName, DiscoveryMechanism, InfoClass, BufferSize, Buffer) = DLL("ISCSIDSC.dll", "dword GetIScsiTargetInformationW(char*, char*, int, void*, void*)")
# 呼び出し: GetIScsiTargetInformationW(TargetName, DiscoveryMechanism, InfoClass, BufferSize, Buffer)
# TargetName : LPWSTR -> "char*"
# DiscoveryMechanism : LPWSTR optional -> "char*"
# InfoClass : TARGET_INFORMATION_CLASS -> "int"
# BufferSize : DWORD* in/out -> "void*"
# Buffer : void* 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)。
# ※-W(Unicode)関数。なでしこ1はANSIのため -A 版の利用を推奨。