SetupGetLineCountW

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

INT SetupGetLineCountW(
    void* InfHandle,
    LPCWSTR Section
);

<DllImport("SETUPAPI.dll", CharSet:=CharSet.Unicode, SetLastError:=True, ExactSpelling:=True)>
Public Shared Function SetupGetLineCountW(
    InfHandle As IntPtr,   ' void*
    <MarshalAs(UnmanagedType.LPWStr)> Section As String   ' LPCWSTR
) As Integer
End Function

' InfHandle : void*
' Section : LPCWSTR
Declare PtrSafe Function SetupGetLineCountW Lib "setupapi" ( _
    ByVal InfHandle As LongPtr, _
    ByVal Section 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

SetupGetLineCountW = ctypes.windll.setupapi.SetupGetLineCountW
SetupGetLineCountW.restype = ctypes.c_int
SetupGetLineCountW.argtypes = [
    ctypes.POINTER(None),  # InfHandle : void*
    wintypes.LPCWSTR,  # Section : LPCWSTR
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('SETUPAPI.dll')
SetupGetLineCountW = Fiddle::Function.new(
  lib['SetupGetLineCountW'],
  [
    Fiddle::TYPE_VOIDP,  # InfHandle : void*
    Fiddle::TYPE_VOIDP,  # Section : LPCWSTR
  ],
  Fiddle::TYPE_INT)
# Wide strings: pass str.encode("UTF-16LE") + "\x00\x00"

#[link(name = "setupapi")]
extern "system" {
    fn SetupGetLineCountW(
        InfHandle: *mut (),  // void*
        Section: *const u16  // LPCWSTR
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("SETUPAPI.dll", CharSet = CharSet.Unicode, SetLastError = true)]
public static extern int SetupGetLineCountW(IntPtr InfHandle, [MarshalAs(UnmanagedType.LPWStr)] string Section);
"@
$api = Add-Type -MemberDefinition $sig -Name 'SETUPAPI_SetupGetLineCountW' -Namespace Win32 -PassThru
# $api::SetupGetLineCountW(InfHandle, Section)

#uselib "SETUPAPI.dll"
#func global SetupGetLineCountW "SetupGetLineCountW" wptr, wptr
; SetupGetLineCountW InfHandle, Section   ; 戻り値は stat
; InfHandle : void* -> "wptr"
; Section : LPCWSTR -> "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 SetupGetLineCountW "SetupGetLineCountW" sptr, wstr
; res = SetupGetLineCountW(InfHandle, Section)
; InfHandle : void* -> "sptr"
; Section : LPCWSTR -> "wstr"

; INT SetupGetLineCountW(void* InfHandle, LPCWSTR Section)
#uselib "SETUPAPI.dll"
#cfunc global SetupGetLineCountW "SetupGetLineCountW" intptr, wstr
; res = SetupGetLineCountW(InfHandle, Section)
; InfHandle : void* -> "intptr"
; Section : LPCWSTR -> "wstr"

import (
	"golang.org/x/sys/windows"
	"unsafe"
)

var (
	setupapi = windows.NewLazySystemDLL("SETUPAPI.dll")
	procSetupGetLineCountW = setupapi.NewProc("SetupGetLineCountW")
)

// InfHandle (void*), Section (LPCWSTR)
r1, _, err := procSetupGetLineCountW.Call(
	uintptr(InfHandle),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(Section))),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // INT

function SetupGetLineCountW(
  InfHandle: Pointer;   // void*
  Section: PWideChar   // LPCWSTR
): Integer; stdcall;
  external 'SETUPAPI.dll' name 'SetupGetLineCountW';

result := DllCall("SETUPAPI\SetupGetLineCountW"
    , "Ptr", InfHandle   ; void*
    , "WStr", Section   ; LPCWSTR
    , "Int")   ; return: INT

●SetupGetLineCountW(InfHandle, Section) = DLL("SETUPAPI.dll", "int SetupGetLineCountW(void*, char*)")
# 呼び出し: SetupGetLineCountW(InfHandle, Section)
# InfHandle : void* -> "void*"
# Section : LPCWSTR -> "char*"
# 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。