SetupDiGetActualSectionToInstallW

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

BOOL SetupDiGetActualSectionToInstallW(
    void* InfHandle,
    LPCWSTR InfSectionName,
    LPWSTR InfSectionWithExt,   // optional
    DWORD InfSectionWithExtSize,
    DWORD* RequiredSize,   // optional
    LPWSTR* Extension   // optional
);

<DllImport("SETUPAPI.dll", CharSet:=CharSet.Unicode, SetLastError:=True, ExactSpelling:=True)>
Public Shared Function SetupDiGetActualSectionToInstallW(
    InfHandle As IntPtr,   ' void*
    <MarshalAs(UnmanagedType.LPWStr)> InfSectionName As String,   ' LPCWSTR
    <MarshalAs(UnmanagedType.LPWStr)> InfSectionWithExt As System.Text.StringBuilder,   ' LPWSTR optional, out
    InfSectionWithExtSize As UInteger,   ' DWORD
    RequiredSize As IntPtr,   ' DWORD* optional, out
    Extension As IntPtr   ' LPWSTR* optional, out
) As Boolean
End Function

' InfHandle : void*
' InfSectionName : LPCWSTR
' InfSectionWithExt : LPWSTR optional, out
' InfSectionWithExtSize : DWORD
' RequiredSize : DWORD* optional, out
' Extension : LPWSTR* optional, out
Declare PtrSafe Function SetupDiGetActualSectionToInstallW Lib "setupapi" ( _
    ByVal InfHandle As LongPtr, _
    ByVal InfSectionName As LongPtr, _
    ByVal InfSectionWithExt As LongPtr, _
    ByVal InfSectionWithExtSize As Long, _
    ByVal RequiredSize As LongPtr, _
    ByVal Extension 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

SetupDiGetActualSectionToInstallW = ctypes.windll.setupapi.SetupDiGetActualSectionToInstallW
SetupDiGetActualSectionToInstallW.restype = wintypes.BOOL
SetupDiGetActualSectionToInstallW.argtypes = [
    ctypes.POINTER(None),  # InfHandle : void*
    wintypes.LPCWSTR,  # InfSectionName : LPCWSTR
    wintypes.LPWSTR,  # InfSectionWithExt : LPWSTR optional, out
    wintypes.DWORD,  # InfSectionWithExtSize : DWORD
    ctypes.POINTER(wintypes.DWORD),  # RequiredSize : DWORD* optional, out
    ctypes.c_void_p,  # Extension : LPWSTR* optional, out
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('SETUPAPI.dll')
SetupDiGetActualSectionToInstallW = Fiddle::Function.new(
  lib['SetupDiGetActualSectionToInstallW'],
  [
    Fiddle::TYPE_VOIDP,  # InfHandle : void*
    Fiddle::TYPE_VOIDP,  # InfSectionName : LPCWSTR
    Fiddle::TYPE_VOIDP,  # InfSectionWithExt : LPWSTR optional, out
    -Fiddle::TYPE_INT,  # InfSectionWithExtSize : DWORD
    Fiddle::TYPE_VOIDP,  # RequiredSize : DWORD* optional, out
    Fiddle::TYPE_VOIDP,  # Extension : LPWSTR* optional, out
  ],
  Fiddle::TYPE_INT)
# Wide strings: pass str.encode("UTF-16LE") + "\x00\x00"

#[link(name = "setupapi")]
extern "system" {
    fn SetupDiGetActualSectionToInstallW(
        InfHandle: *mut (),  // void*
        InfSectionName: *const u16,  // LPCWSTR
        InfSectionWithExt: *mut u16,  // LPWSTR optional, out
        InfSectionWithExtSize: u32,  // DWORD
        RequiredSize: *mut u32,  // DWORD* optional, out
        Extension: *mut *mut u16  // LPWSTR* optional, out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("SETUPAPI.dll", CharSet = CharSet.Unicode, SetLastError = true)]
public static extern bool SetupDiGetActualSectionToInstallW(IntPtr InfHandle, [MarshalAs(UnmanagedType.LPWStr)] string InfSectionName, [MarshalAs(UnmanagedType.LPWStr)] System.Text.StringBuilder InfSectionWithExt, uint InfSectionWithExtSize, IntPtr RequiredSize, IntPtr Extension);
"@
$api = Add-Type -MemberDefinition $sig -Name 'SETUPAPI_SetupDiGetActualSectionToInstallW' -Namespace Win32 -PassThru
# $api::SetupDiGetActualSectionToInstallW(InfHandle, InfSectionName, InfSectionWithExt, InfSectionWithExtSize, RequiredSize, Extension)

#uselib "SETUPAPI.dll"
#func global SetupDiGetActualSectionToInstallW "SetupDiGetActualSectionToInstallW" wptr, wptr, wptr, wptr, wptr, wptr
; SetupDiGetActualSectionToInstallW InfHandle, InfSectionName, varptr(InfSectionWithExt), InfSectionWithExtSize, varptr(RequiredSize), varptr(Extension)   ; 戻り値は stat
; InfHandle : void* -> "wptr"
; InfSectionName : LPCWSTR -> "wptr"
; InfSectionWithExt : LPWSTR optional, out -> "wptr"
; InfSectionWithExtSize : DWORD -> "wptr"
; RequiredSize : DWORD* optional, out -> "wptr"
; Extension : LPWSTR* optional, out -> "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 "SETUPAPI.dll"
#cfunc global SetupDiGetActualSectionToInstallW "SetupDiGetActualSectionToInstallW" sptr, wstr, var, int, var, var
; res = SetupDiGetActualSectionToInstallW(InfHandle, InfSectionName, InfSectionWithExt, InfSectionWithExtSize, RequiredSize, Extension)
; InfHandle : void* -> "sptr"
; InfSectionName : LPCWSTR -> "wstr"
; InfSectionWithExt : LPWSTR optional, out -> "var"
; InfSectionWithExtSize : DWORD -> "int"
; RequiredSize : DWORD* optional, out -> "var"
; Extension : LPWSTR* optional, out -> "var"
; ※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 SetupDiGetActualSectionToInstallW(void* InfHandle, LPCWSTR InfSectionName, LPWSTR InfSectionWithExt, DWORD InfSectionWithExtSize, DWORD* RequiredSize, LPWSTR* Extension)
#uselib "SETUPAPI.dll"
#cfunc global SetupDiGetActualSectionToInstallW "SetupDiGetActualSectionToInstallW" intptr, wstr, var, int, var, var
; res = SetupDiGetActualSectionToInstallW(InfHandle, InfSectionName, InfSectionWithExt, InfSectionWithExtSize, RequiredSize, Extension)
; InfHandle : void* -> "intptr"
; InfSectionName : LPCWSTR -> "wstr"
; InfSectionWithExt : LPWSTR optional, out -> "var"
; InfSectionWithExtSize : DWORD -> "int"
; RequiredSize : DWORD* optional, out -> "var"
; Extension : LPWSTR* optional, out -> "var"
; ※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")
	procSetupDiGetActualSectionToInstallW = setupapi.NewProc("SetupDiGetActualSectionToInstallW")
)

// InfHandle (void*), InfSectionName (LPCWSTR), InfSectionWithExt (LPWSTR optional, out), InfSectionWithExtSize (DWORD), RequiredSize (DWORD* optional, out), Extension (LPWSTR* optional, out)
r1, _, err := procSetupDiGetActualSectionToInstallW.Call(
	uintptr(InfHandle),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(InfSectionName))),
	uintptr(InfSectionWithExt),
	uintptr(InfSectionWithExtSize),
	uintptr(RequiredSize),
	uintptr(Extension),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function SetupDiGetActualSectionToInstallW(
  InfHandle: Pointer;   // void*
  InfSectionName: PWideChar;   // LPCWSTR
  InfSectionWithExt: PWideChar;   // LPWSTR optional, out
  InfSectionWithExtSize: DWORD;   // DWORD
  RequiredSize: Pointer;   // DWORD* optional, out
  Extension: PPWideChar   // LPWSTR* optional, out
): BOOL; stdcall;
  external 'SETUPAPI.dll' name 'SetupDiGetActualSectionToInstallW';

result := DllCall("SETUPAPI\SetupDiGetActualSectionToInstallW"
    , "Ptr", InfHandle   ; void*
    , "WStr", InfSectionName   ; LPCWSTR
    , "Ptr", InfSectionWithExt   ; LPWSTR optional, out
    , "UInt", InfSectionWithExtSize   ; DWORD
    , "Ptr", RequiredSize   ; DWORD* optional, out
    , "Ptr", Extension   ; LPWSTR* optional, out
    , "Int")   ; return: BOOL

●SetupDiGetActualSectionToInstallW(InfHandle, InfSectionName, InfSectionWithExt, InfSectionWithExtSize, RequiredSize, Extension) = DLL("SETUPAPI.dll", "bool SetupDiGetActualSectionToInstallW(void*, char*, char*, dword, void*, void*)")
# 呼び出し: SetupDiGetActualSectionToInstallW(InfHandle, InfSectionName, InfSectionWithExt, InfSectionWithExtSize, RequiredSize, Extension)
# InfHandle : void* -> "void*"
# InfSectionName : LPCWSTR -> "char*"
# InfSectionWithExt : LPWSTR optional, out -> "char*"
# InfSectionWithExtSize : DWORD -> "dword"
# RequiredSize : DWORD* optional, out -> "void*"
# Extension : LPWSTR* optional, out -> "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)。
# ※-W(Unicode)関数。なでしこ1はANSIのため -A 版の利用を推奨。