SetupDiOpenClassRegKey

// SETUPAPI.dll
#include <windows.h>

HKEY SetupDiOpenClassRegKey(
    const GUID* ClassGuid,   // optional
    DWORD samDesired
);

<DllImport("SETUPAPI.dll", SetLastError:=True, ExactSpelling:=True)>
Public Shared Function SetupDiOpenClassRegKey(
    ClassGuid As IntPtr,   ' GUID* optional
    samDesired As UInteger   ' DWORD
) As IntPtr
End Function

' ClassGuid : GUID* optional
' samDesired : DWORD
Declare PtrSafe Function SetupDiOpenClassRegKey Lib "setupapi" ( _
    ByVal ClassGuid As LongPtr, _
    ByVal samDesired As Long) As LongPtr
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

SetupDiOpenClassRegKey = ctypes.windll.setupapi.SetupDiOpenClassRegKey
SetupDiOpenClassRegKey.restype = ctypes.c_void_p
SetupDiOpenClassRegKey.argtypes = [
    ctypes.c_void_p,  # ClassGuid : GUID* optional
    wintypes.DWORD,  # samDesired : DWORD
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('SETUPAPI.dll')
SetupDiOpenClassRegKey = Fiddle::Function.new(
  lib['SetupDiOpenClassRegKey'],
  [
    Fiddle::TYPE_VOIDP,  # ClassGuid : GUID* optional
    -Fiddle::TYPE_INT,  # samDesired : DWORD
  ],
  Fiddle::TYPE_VOIDP)

#[link(name = "setupapi")]
extern "system" {
    fn SetupDiOpenClassRegKey(
        ClassGuid: *const GUID,  // GUID* optional
        samDesired: u32  // DWORD
    ) -> *mut core::ffi::c_void;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("SETUPAPI.dll", SetLastError = true)]
public static extern IntPtr SetupDiOpenClassRegKey(IntPtr ClassGuid, uint samDesired);
"@
$api = Add-Type -MemberDefinition $sig -Name 'SETUPAPI_SetupDiOpenClassRegKey' -Namespace Win32 -PassThru
# $api::SetupDiOpenClassRegKey(ClassGuid, samDesired)

#uselib "SETUPAPI.dll"
#func global SetupDiOpenClassRegKey "SetupDiOpenClassRegKey" sptr, sptr
; SetupDiOpenClassRegKey varptr(ClassGuid), samDesired   ; 戻り値は stat
; ClassGuid : GUID* optional -> "sptr"
; samDesired : 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 "SETUPAPI.dll"
#cfunc global SetupDiOpenClassRegKey "SetupDiOpenClassRegKey" var, int
; res = SetupDiOpenClassRegKey(ClassGuid, samDesired)
; ClassGuid : GUID* optional -> "var"
; samDesired : 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。

; HKEY SetupDiOpenClassRegKey(GUID* ClassGuid, DWORD samDesired)
#uselib "SETUPAPI.dll"
#cfunc global SetupDiOpenClassRegKey "SetupDiOpenClassRegKey" var, int
; res = SetupDiOpenClassRegKey(ClassGuid, samDesired)
; ClassGuid : GUID* optional -> "var"
; samDesired : 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 (
	setupapi = windows.NewLazySystemDLL("SETUPAPI.dll")
	procSetupDiOpenClassRegKey = setupapi.NewProc("SetupDiOpenClassRegKey")
)

// ClassGuid (GUID* optional), samDesired (DWORD)
r1, _, err := procSetupDiOpenClassRegKey.Call(
	uintptr(ClassGuid),
	uintptr(samDesired),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HKEY

function SetupDiOpenClassRegKey(
  ClassGuid: PGUID;   // GUID* optional
  samDesired: DWORD   // DWORD
): THandle; stdcall;
  external 'SETUPAPI.dll' name 'SetupDiOpenClassRegKey';

result := DllCall("SETUPAPI\SetupDiOpenClassRegKey"
    , "Ptr", ClassGuid   ; GUID* optional
    , "UInt", samDesired   ; DWORD
    , "Ptr")   ; return: HKEY

●SetupDiOpenClassRegKey(ClassGuid, samDesired) = DLL("SETUPAPI.dll", "void* SetupDiOpenClassRegKey(void*, dword)")
# 呼び出し: SetupDiOpenClassRegKey(ClassGuid, samDesired)
# ClassGuid : GUID* optional -> "void*"
# samDesired : 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)。