CM_Open_Class_Key_ExW

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

CONFIGRET CM_Open_Class_Key_ExW(
    GUID* ClassGuid,   // optional
    LPCWSTR pszClassName,   // optional
    DWORD samDesired,
    DWORD Disposition,
    HKEY* phkClass,
    DWORD ulFlags,
    INT_PTR hMachine   // optional
);

<DllImport("CFGMGR32.dll", CharSet:=CharSet.Unicode, ExactSpelling:=True)>
Public Shared Function CM_Open_Class_Key_ExW(
    ClassGuid As IntPtr,   ' GUID* optional
    <MarshalAs(UnmanagedType.LPWStr)> pszClassName As String,   ' LPCWSTR optional
    samDesired As UInteger,   ' DWORD
    Disposition As UInteger,   ' DWORD
    phkClass As IntPtr,   ' HKEY* out
    ulFlags As UInteger,   ' DWORD
    hMachine As IntPtr   ' INT_PTR optional
) As UInteger
End Function

' ClassGuid : GUID* optional
' pszClassName : LPCWSTR optional
' samDesired : DWORD
' Disposition : DWORD
' phkClass : HKEY* out
' ulFlags : DWORD
' hMachine : INT_PTR optional
Declare PtrSafe Function CM_Open_Class_Key_ExW Lib "cfgmgr32" ( _
    ByVal ClassGuid As LongPtr, _
    ByVal pszClassName As LongPtr, _
    ByVal samDesired As Long, _
    ByVal Disposition As Long, _
    ByVal phkClass As LongPtr, _
    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_Open_Class_Key_ExW = ctypes.windll.cfgmgr32.CM_Open_Class_Key_ExW
CM_Open_Class_Key_ExW.restype = wintypes.DWORD
CM_Open_Class_Key_ExW.argtypes = [
    ctypes.c_void_p,  # ClassGuid : GUID* optional
    wintypes.LPCWSTR,  # pszClassName : LPCWSTR optional
    wintypes.DWORD,  # samDesired : DWORD
    wintypes.DWORD,  # Disposition : DWORD
    ctypes.c_void_p,  # phkClass : HKEY* out
    wintypes.DWORD,  # ulFlags : DWORD
    ctypes.c_ssize_t,  # hMachine : INT_PTR optional
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('CFGMGR32.dll')
CM_Open_Class_Key_ExW = Fiddle::Function.new(
  lib['CM_Open_Class_Key_ExW'],
  [
    Fiddle::TYPE_VOIDP,  # ClassGuid : GUID* optional
    Fiddle::TYPE_VOIDP,  # pszClassName : LPCWSTR optional
    -Fiddle::TYPE_INT,  # samDesired : DWORD
    -Fiddle::TYPE_INT,  # Disposition : DWORD
    Fiddle::TYPE_VOIDP,  # phkClass : HKEY* out
    -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_Open_Class_Key_ExW(
        ClassGuid: *mut GUID,  // GUID* optional
        pszClassName: *const u16,  // LPCWSTR optional
        samDesired: u32,  // DWORD
        Disposition: u32,  // DWORD
        phkClass: *mut *mut core::ffi::c_void,  // HKEY* out
        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_Open_Class_Key_ExW(IntPtr ClassGuid, [MarshalAs(UnmanagedType.LPWStr)] string pszClassName, uint samDesired, uint Disposition, IntPtr phkClass, uint ulFlags, IntPtr hMachine);
"@
$api = Add-Type -MemberDefinition $sig -Name 'CFGMGR32_CM_Open_Class_Key_ExW' -Namespace Win32 -PassThru
# $api::CM_Open_Class_Key_ExW(ClassGuid, pszClassName, samDesired, Disposition, phkClass, ulFlags, hMachine)

#uselib "CFGMGR32.dll"
#func global CM_Open_Class_Key_ExW "CM_Open_Class_Key_ExW" wptr, wptr, wptr, wptr, wptr, wptr, wptr
; CM_Open_Class_Key_ExW varptr(ClassGuid), pszClassName, samDesired, Disposition, phkClass, ulFlags, hMachine   ; 戻り値は stat
; ClassGuid : GUID* optional -> "wptr"
; pszClassName : LPCWSTR optional -> "wptr"
; samDesired : DWORD -> "wptr"
; Disposition : DWORD -> "wptr"
; phkClass : HKEY* out -> "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_Open_Class_Key_ExW "CM_Open_Class_Key_ExW" var, wstr, int, int, sptr, int, sptr
; res = CM_Open_Class_Key_ExW(ClassGuid, pszClassName, samDesired, Disposition, phkClass, ulFlags, hMachine)
; ClassGuid : GUID* optional -> "var"
; pszClassName : LPCWSTR optional -> "wstr"
; samDesired : DWORD -> "int"
; Disposition : DWORD -> "int"
; phkClass : HKEY* out -> "sptr"
; 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_Open_Class_Key_ExW(GUID* ClassGuid, LPCWSTR pszClassName, DWORD samDesired, DWORD Disposition, HKEY* phkClass, DWORD ulFlags, INT_PTR hMachine)
#uselib "CFGMGR32.dll"
#cfunc global CM_Open_Class_Key_ExW "CM_Open_Class_Key_ExW" var, wstr, int, int, intptr, int, intptr
; res = CM_Open_Class_Key_ExW(ClassGuid, pszClassName, samDesired, Disposition, phkClass, ulFlags, hMachine)
; ClassGuid : GUID* optional -> "var"
; pszClassName : LPCWSTR optional -> "wstr"
; samDesired : DWORD -> "int"
; Disposition : DWORD -> "int"
; phkClass : HKEY* out -> "intptr"
; 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_Open_Class_Key_ExW = cfgmgr32.NewProc("CM_Open_Class_Key_ExW")
)

// ClassGuid (GUID* optional), pszClassName (LPCWSTR optional), samDesired (DWORD), Disposition (DWORD), phkClass (HKEY* out), ulFlags (DWORD), hMachine (INT_PTR optional)
r1, _, err := procCM_Open_Class_Key_ExW.Call(
	uintptr(ClassGuid),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(pszClassName))),
	uintptr(samDesired),
	uintptr(Disposition),
	uintptr(phkClass),
	uintptr(ulFlags),
	uintptr(hMachine),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // CONFIGRET

function CM_Open_Class_Key_ExW(
  ClassGuid: PGUID;   // GUID* optional
  pszClassName: PWideChar;   // LPCWSTR optional
  samDesired: DWORD;   // DWORD
  Disposition: DWORD;   // DWORD
  phkClass: Pointer;   // HKEY* out
  ulFlags: DWORD;   // DWORD
  hMachine: NativeInt   // INT_PTR optional
): DWORD; stdcall;
  external 'CFGMGR32.dll' name 'CM_Open_Class_Key_ExW';

result := DllCall("CFGMGR32\CM_Open_Class_Key_ExW"
    , "Ptr", ClassGuid   ; GUID* optional
    , "WStr", pszClassName   ; LPCWSTR optional
    , "UInt", samDesired   ; DWORD
    , "UInt", Disposition   ; DWORD
    , "Ptr", phkClass   ; HKEY* out
    , "UInt", ulFlags   ; DWORD
    , "Ptr", hMachine   ; INT_PTR optional
    , "UInt")   ; return: CONFIGRET

●CM_Open_Class_Key_ExW(ClassGuid, pszClassName, samDesired, Disposition, phkClass, ulFlags, hMachine) = DLL("CFGMGR32.dll", "dword CM_Open_Class_Key_ExW(void*, char*, dword, dword, void*, dword, int)")
# 呼び出し: CM_Open_Class_Key_ExW(ClassGuid, pszClassName, samDesired, Disposition, phkClass, ulFlags, hMachine)
# ClassGuid : GUID* optional -> "void*"
# pszClassName : LPCWSTR optional -> "char*"
# samDesired : DWORD -> "dword"
# Disposition : DWORD -> "dword"
# phkClass : HKEY* out -> "void*"
# 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。