SetupDiGetClassDescriptionExA

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

BOOL SetupDiGetClassDescriptionExA(
    const GUID* ClassGuid,
    LPSTR ClassDescription,
    DWORD ClassDescriptionSize,
    DWORD* RequiredSize,   // optional
    LPCSTR MachineName,   // optional
    void* Reserved   // optional
);

<DllImport("SETUPAPI.dll", CharSet:=CharSet.Ansi, SetLastError:=True, ExactSpelling:=True)>
Public Shared Function SetupDiGetClassDescriptionExA(
    ByRef ClassGuid As Guid,   ' GUID*
    <MarshalAs(UnmanagedType.LPStr)> ClassDescription As System.Text.StringBuilder,   ' LPSTR out
    ClassDescriptionSize As UInteger,   ' DWORD
    RequiredSize As IntPtr,   ' DWORD* optional, out
    <MarshalAs(UnmanagedType.LPStr)> MachineName As String,   ' LPCSTR optional
    Reserved As IntPtr   ' void* optional
) As Boolean
End Function

' ClassGuid : GUID*
' ClassDescription : LPSTR out
' ClassDescriptionSize : DWORD
' RequiredSize : DWORD* optional, out
' MachineName : LPCSTR optional
' Reserved : void* optional
Declare PtrSafe Function SetupDiGetClassDescriptionExA Lib "setupapi" ( _
    ByVal ClassGuid As LongPtr, _
    ByVal ClassDescription As String, _
    ByVal ClassDescriptionSize As Long, _
    ByVal RequiredSize As LongPtr, _
    ByVal MachineName As String, _
    ByVal Reserved 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

SetupDiGetClassDescriptionExA = ctypes.windll.setupapi.SetupDiGetClassDescriptionExA
SetupDiGetClassDescriptionExA.restype = wintypes.BOOL
SetupDiGetClassDescriptionExA.argtypes = [
    ctypes.c_void_p,  # ClassGuid : GUID*
    wintypes.LPSTR,  # ClassDescription : LPSTR out
    wintypes.DWORD,  # ClassDescriptionSize : DWORD
    ctypes.POINTER(wintypes.DWORD),  # RequiredSize : DWORD* optional, out
    wintypes.LPCSTR,  # MachineName : LPCSTR optional
    ctypes.POINTER(None),  # Reserved : void* optional
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('SETUPAPI.dll')
SetupDiGetClassDescriptionExA = Fiddle::Function.new(
  lib['SetupDiGetClassDescriptionExA'],
  [
    Fiddle::TYPE_VOIDP,  # ClassGuid : GUID*
    Fiddle::TYPE_VOIDP,  # ClassDescription : LPSTR out
    -Fiddle::TYPE_INT,  # ClassDescriptionSize : DWORD
    Fiddle::TYPE_VOIDP,  # RequiredSize : DWORD* optional, out
    Fiddle::TYPE_VOIDP,  # MachineName : LPCSTR optional
    Fiddle::TYPE_VOIDP,  # Reserved : void* optional
  ],
  Fiddle::TYPE_INT)

#[link(name = "setupapi")]
extern "system" {
    fn SetupDiGetClassDescriptionExA(
        ClassGuid: *const GUID,  // GUID*
        ClassDescription: *mut u8,  // LPSTR out
        ClassDescriptionSize: u32,  // DWORD
        RequiredSize: *mut u32,  // DWORD* optional, out
        MachineName: *const u8,  // LPCSTR optional
        Reserved: *mut ()  // void* optional
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("SETUPAPI.dll", CharSet = CharSet.Ansi, SetLastError = true)]
public static extern bool SetupDiGetClassDescriptionExA(ref Guid ClassGuid, [MarshalAs(UnmanagedType.LPStr)] System.Text.StringBuilder ClassDescription, uint ClassDescriptionSize, IntPtr RequiredSize, [MarshalAs(UnmanagedType.LPStr)] string MachineName, IntPtr Reserved);
"@
$api = Add-Type -MemberDefinition $sig -Name 'SETUPAPI_SetupDiGetClassDescriptionExA' -Namespace Win32 -PassThru
# $api::SetupDiGetClassDescriptionExA(ClassGuid, ClassDescription, ClassDescriptionSize, RequiredSize, MachineName, Reserved)

#uselib "SETUPAPI.dll"
#func global SetupDiGetClassDescriptionExA "SetupDiGetClassDescriptionExA" sptr, sptr, sptr, sptr, sptr, sptr
; SetupDiGetClassDescriptionExA varptr(ClassGuid), varptr(ClassDescription), ClassDescriptionSize, varptr(RequiredSize), MachineName, Reserved   ; 戻り値は stat
; ClassGuid : GUID* -> "sptr"
; ClassDescription : LPSTR out -> "sptr"
; ClassDescriptionSize : DWORD -> "sptr"
; RequiredSize : DWORD* optional, out -> "sptr"
; MachineName : LPCSTR optional -> "sptr"
; Reserved : void* 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 "SETUPAPI.dll"
#cfunc global SetupDiGetClassDescriptionExA "SetupDiGetClassDescriptionExA" var, var, int, var, str, sptr
; res = SetupDiGetClassDescriptionExA(ClassGuid, ClassDescription, ClassDescriptionSize, RequiredSize, MachineName, Reserved)
; ClassGuid : GUID* -> "var"
; ClassDescription : LPSTR out -> "var"
; ClassDescriptionSize : DWORD -> "int"
; RequiredSize : DWORD* optional, out -> "var"
; MachineName : LPCSTR optional -> "str"
; Reserved : void* 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。

; BOOL SetupDiGetClassDescriptionExA(GUID* ClassGuid, LPSTR ClassDescription, DWORD ClassDescriptionSize, DWORD* RequiredSize, LPCSTR MachineName, void* Reserved)
#uselib "SETUPAPI.dll"
#cfunc global SetupDiGetClassDescriptionExA "SetupDiGetClassDescriptionExA" var, var, int, var, str, intptr
; res = SetupDiGetClassDescriptionExA(ClassGuid, ClassDescription, ClassDescriptionSize, RequiredSize, MachineName, Reserved)
; ClassGuid : GUID* -> "var"
; ClassDescription : LPSTR out -> "var"
; ClassDescriptionSize : DWORD -> "int"
; RequiredSize : DWORD* optional, out -> "var"
; MachineName : LPCSTR optional -> "str"
; Reserved : void* 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 (
	setupapi = windows.NewLazySystemDLL("SETUPAPI.dll")
	procSetupDiGetClassDescriptionExA = setupapi.NewProc("SetupDiGetClassDescriptionExA")
)

// ClassGuid (GUID*), ClassDescription (LPSTR out), ClassDescriptionSize (DWORD), RequiredSize (DWORD* optional, out), MachineName (LPCSTR optional), Reserved (void* optional)
r1, _, err := procSetupDiGetClassDescriptionExA.Call(
	uintptr(ClassGuid),
	uintptr(ClassDescription),
	uintptr(ClassDescriptionSize),
	uintptr(RequiredSize),
	uintptr(unsafe.Pointer(windows.BytePtrFromString(MachineName))),
	uintptr(Reserved),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function SetupDiGetClassDescriptionExA(
  ClassGuid: PGUID;   // GUID*
  ClassDescription: PAnsiChar;   // LPSTR out
  ClassDescriptionSize: DWORD;   // DWORD
  RequiredSize: Pointer;   // DWORD* optional, out
  MachineName: PAnsiChar;   // LPCSTR optional
  Reserved: Pointer   // void* optional
): BOOL; stdcall;
  external 'SETUPAPI.dll' name 'SetupDiGetClassDescriptionExA';

result := DllCall("SETUPAPI\SetupDiGetClassDescriptionExA"
    , "Ptr", ClassGuid   ; GUID*
    , "Ptr", ClassDescription   ; LPSTR out
    , "UInt", ClassDescriptionSize   ; DWORD
    , "Ptr", RequiredSize   ; DWORD* optional, out
    , "AStr", MachineName   ; LPCSTR optional
    , "Ptr", Reserved   ; void* optional
    , "Int")   ; return: BOOL

●SetupDiGetClassDescriptionExA(ClassGuid, ClassDescription, ClassDescriptionSize, RequiredSize, MachineName, Reserved) = DLL("SETUPAPI.dll", "bool SetupDiGetClassDescriptionExA(void*, char*, dword, void*, char*, void*)")
# 呼び出し: SetupDiGetClassDescriptionExA(ClassGuid, ClassDescription, ClassDescriptionSize, RequiredSize, MachineName, Reserved)
# ClassGuid : GUID* -> "void*"
# ClassDescription : LPSTR out -> "char*"
# ClassDescriptionSize : DWORD -> "dword"
# RequiredSize : DWORD* optional, out -> "void*"
# MachineName : LPCSTR optional -> "char*"
# Reserved : void* optional -> "void*"
# 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)。