GetDevicesForIScsiSessionW

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

DWORD GetDevicesForIScsiSessionW(
    ISCSI_UNIQUE_SESSION_ID* UniqueSessionId,
    DWORD* DeviceCount,
    ISCSI_DEVICE_ON_SESSIONW* Devices
);

<DllImport("ISCSIDSC.dll", CharSet:=CharSet.Unicode, ExactSpelling:=True)>
Public Shared Function GetDevicesForIScsiSessionW(
    UniqueSessionId As IntPtr,   ' ISCSI_UNIQUE_SESSION_ID* in/out
    ByRef DeviceCount As UInteger,   ' DWORD* in/out
    Devices As IntPtr   ' ISCSI_DEVICE_ON_SESSIONW* in/out
) As UInteger
End Function

' UniqueSessionId : ISCSI_UNIQUE_SESSION_ID* in/out
' DeviceCount : DWORD* in/out
' Devices : ISCSI_DEVICE_ON_SESSIONW* in/out
Declare PtrSafe Function GetDevicesForIScsiSessionW Lib "iscsidsc" ( _
    ByVal UniqueSessionId As LongPtr, _
    ByRef DeviceCount As Long, _
    ByVal Devices 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

GetDevicesForIScsiSessionW = ctypes.windll.iscsidsc.GetDevicesForIScsiSessionW
GetDevicesForIScsiSessionW.restype = wintypes.DWORD
GetDevicesForIScsiSessionW.argtypes = [
    ctypes.c_void_p,  # UniqueSessionId : ISCSI_UNIQUE_SESSION_ID* in/out
    ctypes.POINTER(wintypes.DWORD),  # DeviceCount : DWORD* in/out
    ctypes.c_void_p,  # Devices : ISCSI_DEVICE_ON_SESSIONW* in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('ISCSIDSC.dll')
GetDevicesForIScsiSessionW = Fiddle::Function.new(
  lib['GetDevicesForIScsiSessionW'],
  [
    Fiddle::TYPE_VOIDP,  # UniqueSessionId : ISCSI_UNIQUE_SESSION_ID* in/out
    Fiddle::TYPE_VOIDP,  # DeviceCount : DWORD* in/out
    Fiddle::TYPE_VOIDP,  # Devices : ISCSI_DEVICE_ON_SESSIONW* in/out
  ],
  -Fiddle::TYPE_INT)
# Wide strings: pass str.encode("UTF-16LE") + "\x00\x00"

#[link(name = "iscsidsc")]
extern "system" {
    fn GetDevicesForIScsiSessionW(
        UniqueSessionId: *mut ISCSI_UNIQUE_SESSION_ID,  // ISCSI_UNIQUE_SESSION_ID* in/out
        DeviceCount: *mut u32,  // DWORD* in/out
        Devices: *mut ISCSI_DEVICE_ON_SESSIONW  // ISCSI_DEVICE_ON_SESSIONW* in/out
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("ISCSIDSC.dll", CharSet = CharSet.Unicode)]
public static extern uint GetDevicesForIScsiSessionW(IntPtr UniqueSessionId, ref uint DeviceCount, IntPtr Devices);
"@
$api = Add-Type -MemberDefinition $sig -Name 'ISCSIDSC_GetDevicesForIScsiSessionW' -Namespace Win32 -PassThru
# $api::GetDevicesForIScsiSessionW(UniqueSessionId, DeviceCount, Devices)

#uselib "ISCSIDSC.dll"
#func global GetDevicesForIScsiSessionW "GetDevicesForIScsiSessionW" wptr, wptr, wptr
; GetDevicesForIScsiSessionW varptr(UniqueSessionId), varptr(DeviceCount), varptr(Devices)   ; 戻り値は stat
; UniqueSessionId : ISCSI_UNIQUE_SESSION_ID* in/out -> "wptr"
; DeviceCount : DWORD* in/out -> "wptr"
; Devices : ISCSI_DEVICE_ON_SESSIONW* 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 GetDevicesForIScsiSessionW "GetDevicesForIScsiSessionW" var, var, var
; res = GetDevicesForIScsiSessionW(UniqueSessionId, DeviceCount, Devices)
; UniqueSessionId : ISCSI_UNIQUE_SESSION_ID* in/out -> "var"
; DeviceCount : DWORD* in/out -> "var"
; Devices : ISCSI_DEVICE_ON_SESSIONW* 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。

; DWORD GetDevicesForIScsiSessionW(ISCSI_UNIQUE_SESSION_ID* UniqueSessionId, DWORD* DeviceCount, ISCSI_DEVICE_ON_SESSIONW* Devices)
#uselib "ISCSIDSC.dll"
#cfunc global GetDevicesForIScsiSessionW "GetDevicesForIScsiSessionW" var, var, var
; res = GetDevicesForIScsiSessionW(UniqueSessionId, DeviceCount, Devices)
; UniqueSessionId : ISCSI_UNIQUE_SESSION_ID* in/out -> "var"
; DeviceCount : DWORD* in/out -> "var"
; Devices : ISCSI_DEVICE_ON_SESSIONW* 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 (
	iscsidsc = windows.NewLazySystemDLL("ISCSIDSC.dll")
	procGetDevicesForIScsiSessionW = iscsidsc.NewProc("GetDevicesForIScsiSessionW")
)

// UniqueSessionId (ISCSI_UNIQUE_SESSION_ID* in/out), DeviceCount (DWORD* in/out), Devices (ISCSI_DEVICE_ON_SESSIONW* in/out)
r1, _, err := procGetDevicesForIScsiSessionW.Call(
	uintptr(UniqueSessionId),
	uintptr(DeviceCount),
	uintptr(Devices),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function GetDevicesForIScsiSessionW(
  UniqueSessionId: Pointer;   // ISCSI_UNIQUE_SESSION_ID* in/out
  DeviceCount: Pointer;   // DWORD* in/out
  Devices: Pointer   // ISCSI_DEVICE_ON_SESSIONW* in/out
): DWORD; stdcall;
  external 'ISCSIDSC.dll' name 'GetDevicesForIScsiSessionW';

result := DllCall("ISCSIDSC\GetDevicesForIScsiSessionW"
    , "Ptr", UniqueSessionId   ; ISCSI_UNIQUE_SESSION_ID* in/out
    , "Ptr", DeviceCount   ; DWORD* in/out
    , "Ptr", Devices   ; ISCSI_DEVICE_ON_SESSIONW* in/out
    , "UInt")   ; return: DWORD

●GetDevicesForIScsiSessionW(UniqueSessionId, DeviceCount, Devices) = DLL("ISCSIDSC.dll", "dword GetDevicesForIScsiSessionW(void*, void*, void*)")
# 呼び出し: GetDevicesForIScsiSessionW(UniqueSessionId, DeviceCount, Devices)
# UniqueSessionId : ISCSI_UNIQUE_SESSION_ID* in/out -> "void*"
# DeviceCount : DWORD* in/out -> "void*"
# Devices : ISCSI_DEVICE_ON_SESSIONW* 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。