CM_Get_Device_ID_ExW

// CFGMGR32.dll  (Unicode / -W)
#include <windows.h>

CONFIGRET CM_Get_Device_ID_ExW(
    DWORD dnDevInst,
    LPWSTR Buffer,
    DWORD BufferLen,
    DWORD ulFlags,
    INT_PTR hMachine   // optional
);

<DllImport("CFGMGR32.dll", CharSet:=CharSet.Unicode, ExactSpelling:=True)>
Public Shared Function CM_Get_Device_ID_ExW(
    dnDevInst As UInteger,   ' DWORD
    <MarshalAs(UnmanagedType.LPWStr)> Buffer As System.Text.StringBuilder,   ' LPWSTR out
    BufferLen As UInteger,   ' DWORD
    ulFlags As UInteger,   ' DWORD
    hMachine As IntPtr   ' INT_PTR optional
) As UInteger
End Function

' dnDevInst : DWORD
' Buffer : LPWSTR out
' BufferLen : DWORD
' ulFlags : DWORD
' hMachine : INT_PTR optional
Declare PtrSafe Function CM_Get_Device_ID_ExW Lib "cfgmgr32" ( _
    ByVal dnDevInst As Long, _
    ByVal Buffer As LongPtr, _
    ByVal BufferLen As Long, _
    ByVal ulFlags As Long, _
    ByVal hMachine 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

CM_Get_Device_ID_ExW = ctypes.windll.cfgmgr32.CM_Get_Device_ID_ExW
CM_Get_Device_ID_ExW.restype = wintypes.DWORD
CM_Get_Device_ID_ExW.argtypes = [
    wintypes.DWORD,  # dnDevInst : DWORD
    wintypes.LPWSTR,  # Buffer : LPWSTR out
    wintypes.DWORD,  # BufferLen : DWORD
    wintypes.DWORD,  # ulFlags : DWORD
    ctypes.c_ssize_t,  # hMachine : INT_PTR optional
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('CFGMGR32.dll')
CM_Get_Device_ID_ExW = Fiddle::Function.new(
  lib['CM_Get_Device_ID_ExW'],
  [
    -Fiddle::TYPE_INT,  # dnDevInst : DWORD
    Fiddle::TYPE_VOIDP,  # Buffer : LPWSTR out
    -Fiddle::TYPE_INT,  # BufferLen : DWORD
    -Fiddle::TYPE_INT,  # ulFlags : DWORD
    Fiddle::TYPE_INTPTR_T,  # hMachine : INT_PTR optional
  ],
  -Fiddle::TYPE_INT)
# Wide strings: pass str.encode("UTF-16LE") + "\x00\x00"

#[link(name = "cfgmgr32")]
extern "system" {
    fn CM_Get_Device_ID_ExW(
        dnDevInst: u32,  // DWORD
        Buffer: *mut u16,  // LPWSTR out
        BufferLen: u32,  // DWORD
        ulFlags: u32,  // DWORD
        hMachine: isize  // INT_PTR optional
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("CFGMGR32.dll", CharSet = CharSet.Unicode)]
public static extern uint CM_Get_Device_ID_ExW(uint dnDevInst, [MarshalAs(UnmanagedType.LPWStr)] System.Text.StringBuilder Buffer, uint BufferLen, uint ulFlags, IntPtr hMachine);
"@
$api = Add-Type -MemberDefinition $sig -Name 'CFGMGR32_CM_Get_Device_ID_ExW' -Namespace Win32 -PassThru
# $api::CM_Get_Device_ID_ExW(dnDevInst, Buffer, BufferLen, ulFlags, hMachine)

#uselib "CFGMGR32.dll"
#func global CM_Get_Device_ID_ExW "CM_Get_Device_ID_ExW" wptr, wptr, wptr, wptr, wptr
; CM_Get_Device_ID_ExW dnDevInst, varptr(Buffer), BufferLen, ulFlags, hMachine   ; 戻り値は stat
; dnDevInst : DWORD -> "wptr"
; Buffer : LPWSTR out -> "wptr"
; BufferLen : DWORD -> "wptr"
; ulFlags : DWORD -> "wptr"
; hMachine : INT_PTR optional -> "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 "CFGMGR32.dll"
#cfunc global CM_Get_Device_ID_ExW "CM_Get_Device_ID_ExW" int, var, int, int, sptr
; res = CM_Get_Device_ID_ExW(dnDevInst, Buffer, BufferLen, ulFlags, hMachine)
; dnDevInst : DWORD -> "int"
; Buffer : LPWSTR out -> "var"
; BufferLen : DWORD -> "int"
; ulFlags : DWORD -> "int"
; hMachine : INT_PTR optional -> "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。

; CONFIGRET CM_Get_Device_ID_ExW(DWORD dnDevInst, LPWSTR Buffer, DWORD BufferLen, DWORD ulFlags, INT_PTR hMachine)
#uselib "CFGMGR32.dll"
#cfunc global CM_Get_Device_ID_ExW "CM_Get_Device_ID_ExW" int, var, int, int, intptr
; res = CM_Get_Device_ID_ExW(dnDevInst, Buffer, BufferLen, ulFlags, hMachine)
; dnDevInst : DWORD -> "int"
; Buffer : LPWSTR out -> "var"
; BufferLen : DWORD -> "int"
; ulFlags : DWORD -> "int"
; hMachine : INT_PTR optional -> "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 (
	cfgmgr32 = windows.NewLazySystemDLL("CFGMGR32.dll")
	procCM_Get_Device_ID_ExW = cfgmgr32.NewProc("CM_Get_Device_ID_ExW")
)

// dnDevInst (DWORD), Buffer (LPWSTR out), BufferLen (DWORD), ulFlags (DWORD), hMachine (INT_PTR optional)
r1, _, err := procCM_Get_Device_ID_ExW.Call(
	uintptr(dnDevInst),
	uintptr(Buffer),
	uintptr(BufferLen),
	uintptr(ulFlags),
	uintptr(hMachine),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // CONFIGRET

function CM_Get_Device_ID_ExW(
  dnDevInst: DWORD;   // DWORD
  Buffer: PWideChar;   // LPWSTR out
  BufferLen: DWORD;   // DWORD
  ulFlags: DWORD;   // DWORD
  hMachine: NativeInt   // INT_PTR optional
): DWORD; stdcall;
  external 'CFGMGR32.dll' name 'CM_Get_Device_ID_ExW';

result := DllCall("CFGMGR32\CM_Get_Device_ID_ExW"
    , "UInt", dnDevInst   ; DWORD
    , "Ptr", Buffer   ; LPWSTR out
    , "UInt", BufferLen   ; DWORD
    , "UInt", ulFlags   ; DWORD
    , "Ptr", hMachine   ; INT_PTR optional
    , "UInt")   ; return: CONFIGRET

●CM_Get_Device_ID_ExW(dnDevInst, Buffer, BufferLen, ulFlags, hMachine) = DLL("CFGMGR32.dll", "dword CM_Get_Device_ID_ExW(dword, char*, dword, dword, int)")
# 呼び出し: CM_Get_Device_ID_ExW(dnDevInst, Buffer, BufferLen, ulFlags, hMachine)
# dnDevInst : DWORD -> "dword"
# Buffer : LPWSTR out -> "char*"
# BufferLen : DWORD -> "dword"
# ulFlags : DWORD -> "dword"
# hMachine : INT_PTR optional -> "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)。
# ※-W(Unicode)関数。なでしこ1はANSIのため -A 版の利用を推奨。