CM_Get_Class_Key_Name_ExA

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

CONFIGRET CM_Get_Class_Key_Name_ExA(
    GUID* ClassGuid,
    LPSTR pszKeyName,   // optional
    DWORD* pulLength,
    DWORD ulFlags,
    INT_PTR hMachine   // optional
);

<DllImport("CFGMGR32.dll", CharSet:=CharSet.Ansi, ExactSpelling:=True)>
Public Shared Function CM_Get_Class_Key_Name_ExA(
    ByRef ClassGuid As Guid,   ' GUID*
    <MarshalAs(UnmanagedType.LPStr)> pszKeyName As System.Text.StringBuilder,   ' LPSTR optional, out
    ByRef pulLength As UInteger,   ' DWORD* in/out
    ulFlags As UInteger,   ' DWORD
    hMachine As IntPtr   ' INT_PTR optional
) As UInteger
End Function

' ClassGuid : GUID*
' pszKeyName : LPSTR optional, out
' pulLength : DWORD* in/out
' ulFlags : DWORD
' hMachine : INT_PTR optional
Declare PtrSafe Function CM_Get_Class_Key_Name_ExA Lib "cfgmgr32" ( _
    ByVal ClassGuid As LongPtr, _
    ByVal pszKeyName As String, _
    ByRef pulLength As Long, _
    ByVal ulFlags As Long, _
    ByVal hMachine As LongPtr) 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_Get_Class_Key_Name_ExA = ctypes.windll.cfgmgr32.CM_Get_Class_Key_Name_ExA
CM_Get_Class_Key_Name_ExA.restype = wintypes.DWORD
CM_Get_Class_Key_Name_ExA.argtypes = [
    ctypes.c_void_p,  # ClassGuid : GUID*
    wintypes.LPSTR,  # pszKeyName : LPSTR optional, out
    ctypes.POINTER(wintypes.DWORD),  # pulLength : DWORD* in/out
    wintypes.DWORD,  # ulFlags : DWORD
    ctypes.c_ssize_t,  # hMachine : INT_PTR optional
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('CFGMGR32.dll')
CM_Get_Class_Key_Name_ExA = Fiddle::Function.new(
  lib['CM_Get_Class_Key_Name_ExA'],
  [
    Fiddle::TYPE_VOIDP,  # ClassGuid : GUID*
    Fiddle::TYPE_VOIDP,  # pszKeyName : LPSTR optional, out
    Fiddle::TYPE_VOIDP,  # pulLength : DWORD* in/out
    -Fiddle::TYPE_INT,  # ulFlags : DWORD
    Fiddle::TYPE_INTPTR_T,  # hMachine : INT_PTR optional
  ],
  -Fiddle::TYPE_INT)

#[link(name = "cfgmgr32")]
extern "system" {
    fn CM_Get_Class_Key_Name_ExA(
        ClassGuid: *mut GUID,  // GUID*
        pszKeyName: *mut u8,  // LPSTR optional, out
        pulLength: *mut u32,  // DWORD* in/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.Ansi)]
public static extern uint CM_Get_Class_Key_Name_ExA(ref Guid ClassGuid, [MarshalAs(UnmanagedType.LPStr)] System.Text.StringBuilder pszKeyName, ref uint pulLength, uint ulFlags, IntPtr hMachine);
"@
$api = Add-Type -MemberDefinition $sig -Name 'CFGMGR32_CM_Get_Class_Key_Name_ExA' -Namespace Win32 -PassThru
# $api::CM_Get_Class_Key_Name_ExA(ClassGuid, pszKeyName, pulLength, ulFlags, hMachine)

#uselib "CFGMGR32.dll"
#func global CM_Get_Class_Key_Name_ExA "CM_Get_Class_Key_Name_ExA" sptr, sptr, sptr, sptr, sptr
; CM_Get_Class_Key_Name_ExA varptr(ClassGuid), varptr(pszKeyName), varptr(pulLength), ulFlags, hMachine   ; 戻り値は stat
; ClassGuid : GUID* -> "sptr"
; pszKeyName : LPSTR optional, out -> "sptr"
; pulLength : DWORD* in/out -> "sptr"
; ulFlags : DWORD -> "sptr"
; hMachine : INT_PTR optional -> "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_Get_Class_Key_Name_ExA "CM_Get_Class_Key_Name_ExA" var, var, var, int, sptr
; res = CM_Get_Class_Key_Name_ExA(ClassGuid, pszKeyName, pulLength, ulFlags, hMachine)
; ClassGuid : GUID* -> "var"
; pszKeyName : LPSTR optional, out -> "var"
; pulLength : DWORD* in/out -> "var"
; 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_Class_Key_Name_ExA(GUID* ClassGuid, LPSTR pszKeyName, DWORD* pulLength, DWORD ulFlags, INT_PTR hMachine)
#uselib "CFGMGR32.dll"
#cfunc global CM_Get_Class_Key_Name_ExA "CM_Get_Class_Key_Name_ExA" var, var, var, int, intptr
; res = CM_Get_Class_Key_Name_ExA(ClassGuid, pszKeyName, pulLength, ulFlags, hMachine)
; ClassGuid : GUID* -> "var"
; pszKeyName : LPSTR optional, out -> "var"
; pulLength : DWORD* in/out -> "var"
; 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_Class_Key_Name_ExA = cfgmgr32.NewProc("CM_Get_Class_Key_Name_ExA")
)

// ClassGuid (GUID*), pszKeyName (LPSTR optional, out), pulLength (DWORD* in/out), ulFlags (DWORD), hMachine (INT_PTR optional)
r1, _, err := procCM_Get_Class_Key_Name_ExA.Call(
	uintptr(ClassGuid),
	uintptr(pszKeyName),
	uintptr(pulLength),
	uintptr(ulFlags),
	uintptr(hMachine),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // CONFIGRET

function CM_Get_Class_Key_Name_ExA(
  ClassGuid: PGUID;   // GUID*
  pszKeyName: PAnsiChar;   // LPSTR optional, out
  pulLength: Pointer;   // DWORD* in/out
  ulFlags: DWORD;   // DWORD
  hMachine: NativeInt   // INT_PTR optional
): DWORD; stdcall;
  external 'CFGMGR32.dll' name 'CM_Get_Class_Key_Name_ExA';

result := DllCall("CFGMGR32\CM_Get_Class_Key_Name_ExA"
    , "Ptr", ClassGuid   ; GUID*
    , "Ptr", pszKeyName   ; LPSTR optional, out
    , "Ptr", pulLength   ; DWORD* in/out
    , "UInt", ulFlags   ; DWORD
    , "Ptr", hMachine   ; INT_PTR optional
    , "UInt")   ; return: CONFIGRET

●CM_Get_Class_Key_Name_ExA(ClassGuid, pszKeyName, pulLength, ulFlags, hMachine) = DLL("CFGMGR32.dll", "dword CM_Get_Class_Key_Name_ExA(void*, char*, void*, dword, int)")
# 呼び出し: CM_Get_Class_Key_Name_ExA(ClassGuid, pszKeyName, pulLength, ulFlags, hMachine)
# ClassGuid : GUID* -> "void*"
# pszKeyName : LPSTR optional, out -> "char*"
# pulLength : DWORD* in/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)。