CM_Open_Class_KeyA

// CFGMGR32.dll  (ANSI / -A)
#include <windows.h>

CONFIGRET CM_Open_Class_KeyA(
    GUID* ClassGuid,   // optional
    LPCSTR pszClassName,   // optional
    DWORD samDesired,
    DWORD Disposition,
    HKEY* phkClass,
    DWORD ulFlags
);

<DllImport("CFGMGR32.dll", CharSet:=CharSet.Ansi, ExactSpelling:=True)>
Public Shared Function CM_Open_Class_KeyA(
    ClassGuid As IntPtr,   ' GUID* optional
    <MarshalAs(UnmanagedType.LPStr)> pszClassName As String,   ' LPCSTR optional
    samDesired As UInteger,   ' DWORD
    Disposition As UInteger,   ' DWORD
    phkClass As IntPtr,   ' HKEY* out
    ulFlags As UInteger   ' DWORD
) As UInteger
End Function

' ClassGuid : GUID* optional
' pszClassName : LPCSTR optional
' samDesired : DWORD
' Disposition : DWORD
' phkClass : HKEY* out
' ulFlags : DWORD
Declare PtrSafe Function CM_Open_Class_KeyA Lib "cfgmgr32" ( _
    ByVal ClassGuid As LongPtr, _
    ByVal pszClassName As String, _
    ByVal samDesired As Long, _
    ByVal Disposition As Long, _
    ByVal phkClass As LongPtr, _
    ByVal ulFlags As Long) As Long
' 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_KeyA = ctypes.windll.cfgmgr32.CM_Open_Class_KeyA
CM_Open_Class_KeyA.restype = wintypes.DWORD
CM_Open_Class_KeyA.argtypes = [
    ctypes.c_void_p,  # ClassGuid : GUID* optional
    wintypes.LPCSTR,  # pszClassName : LPCSTR optional
    wintypes.DWORD,  # samDesired : DWORD
    wintypes.DWORD,  # Disposition : DWORD
    ctypes.c_void_p,  # phkClass : HKEY* out
    wintypes.DWORD,  # ulFlags : DWORD
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('CFGMGR32.dll')
CM_Open_Class_KeyA = Fiddle::Function.new(
  lib['CM_Open_Class_KeyA'],
  [
    Fiddle::TYPE_VOIDP,  # ClassGuid : GUID* optional
    Fiddle::TYPE_VOIDP,  # pszClassName : LPCSTR optional
    -Fiddle::TYPE_INT,  # samDesired : DWORD
    -Fiddle::TYPE_INT,  # Disposition : DWORD
    Fiddle::TYPE_VOIDP,  # phkClass : HKEY* out
    -Fiddle::TYPE_INT,  # ulFlags : DWORD
  ],
  -Fiddle::TYPE_INT)

#[link(name = "cfgmgr32")]
extern "system" {
    fn CM_Open_Class_KeyA(
        ClassGuid: *mut GUID,  // GUID* optional
        pszClassName: *const u8,  // LPCSTR optional
        samDesired: u32,  // DWORD
        Disposition: u32,  // DWORD
        phkClass: *mut *mut core::ffi::c_void,  // HKEY* out
        ulFlags: u32  // DWORD
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("CFGMGR32.dll", CharSet = CharSet.Ansi)]
public static extern uint CM_Open_Class_KeyA(IntPtr ClassGuid, [MarshalAs(UnmanagedType.LPStr)] string pszClassName, uint samDesired, uint Disposition, IntPtr phkClass, uint ulFlags);
"@
$api = Add-Type -MemberDefinition $sig -Name 'CFGMGR32_CM_Open_Class_KeyA' -Namespace Win32 -PassThru
# $api::CM_Open_Class_KeyA(ClassGuid, pszClassName, samDesired, Disposition, phkClass, ulFlags)

#uselib "CFGMGR32.dll"
#func global CM_Open_Class_KeyA "CM_Open_Class_KeyA" sptr, sptr, sptr, sptr, sptr, sptr
; CM_Open_Class_KeyA varptr(ClassGuid), pszClassName, samDesired, Disposition, phkClass, ulFlags   ; 戻り値は stat
; ClassGuid : GUID* optional -> "sptr"
; pszClassName : LPCSTR optional -> "sptr"
; samDesired : DWORD -> "sptr"
; Disposition : DWORD -> "sptr"
; phkClass : HKEY* out -> "sptr"
; ulFlags : 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 "CFGMGR32.dll"
#cfunc global CM_Open_Class_KeyA "CM_Open_Class_KeyA" var, str, int, int, sptr, int
; res = CM_Open_Class_KeyA(ClassGuid, pszClassName, samDesired, Disposition, phkClass, ulFlags)
; ClassGuid : GUID* optional -> "var"
; pszClassName : LPCSTR optional -> "str"
; samDesired : DWORD -> "int"
; Disposition : DWORD -> "int"
; phkClass : HKEY* out -> "sptr"
; ulFlags : DWORD -> "int"
; ※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_KeyA(GUID* ClassGuid, LPCSTR pszClassName, DWORD samDesired, DWORD Disposition, HKEY* phkClass, DWORD ulFlags)
#uselib "CFGMGR32.dll"
#cfunc global CM_Open_Class_KeyA "CM_Open_Class_KeyA" var, str, int, int, intptr, int
; res = CM_Open_Class_KeyA(ClassGuid, pszClassName, samDesired, Disposition, phkClass, ulFlags)
; ClassGuid : GUID* optional -> "var"
; pszClassName : LPCSTR optional -> "str"
; samDesired : DWORD -> "int"
; Disposition : DWORD -> "int"
; phkClass : HKEY* out -> "intptr"
; ulFlags : DWORD -> "int"
; ※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_KeyA = cfgmgr32.NewProc("CM_Open_Class_KeyA")
)

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

function CM_Open_Class_KeyA(
  ClassGuid: PGUID;   // GUID* optional
  pszClassName: PAnsiChar;   // LPCSTR optional
  samDesired: DWORD;   // DWORD
  Disposition: DWORD;   // DWORD
  phkClass: Pointer;   // HKEY* out
  ulFlags: DWORD   // DWORD
): DWORD; stdcall;
  external 'CFGMGR32.dll' name 'CM_Open_Class_KeyA';

result := DllCall("CFGMGR32\CM_Open_Class_KeyA"
    , "Ptr", ClassGuid   ; GUID* optional
    , "AStr", pszClassName   ; LPCSTR optional
    , "UInt", samDesired   ; DWORD
    , "UInt", Disposition   ; DWORD
    , "Ptr", phkClass   ; HKEY* out
    , "UInt", ulFlags   ; DWORD
    , "UInt")   ; return: CONFIGRET

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