SetupGetLineCountA

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

INT SetupGetLineCountA(
    void* InfHandle,
    LPCSTR Section
);

<DllImport("SETUPAPI.dll", CharSet:=CharSet.Ansi, SetLastError:=True, ExactSpelling:=True)>
Public Shared Function SetupGetLineCountA(
    InfHandle As IntPtr,   ' void*
    <MarshalAs(UnmanagedType.LPStr)> Section As String   ' LPCSTR
) As Integer
End Function

' InfHandle : void*
' Section : LPCSTR
Declare PtrSafe Function SetupGetLineCountA Lib "setupapi" ( _
    ByVal InfHandle As LongPtr, _
    ByVal Section As String) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

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

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('SETUPAPI.dll')
SetupGetLineCountA = Fiddle::Function.new(
  lib['SetupGetLineCountA'],
  [
    Fiddle::TYPE_VOIDP,  # InfHandle : void*
    Fiddle::TYPE_VOIDP,  # Section : LPCSTR
  ],
  Fiddle::TYPE_INT)

#[link(name = "setupapi")]
extern "system" {
    fn SetupGetLineCountA(
        InfHandle: *mut (),  // void*
        Section: *const u8  // LPCSTR
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

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

#uselib "SETUPAPI.dll"
#func global SetupGetLineCountA "SetupGetLineCountA" sptr, sptr
; SetupGetLineCountA InfHandle, Section   ; 戻り値は stat
; InfHandle : void* -> "sptr"
; Section : LPCSTR -> "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 SetupGetLineCountA "SetupGetLineCountA" sptr, str
; res = SetupGetLineCountA(InfHandle, Section)
; InfHandle : void* -> "sptr"
; Section : LPCSTR -> "str"

; INT SetupGetLineCountA(void* InfHandle, LPCSTR Section)
#uselib "SETUPAPI.dll"
#cfunc global SetupGetLineCountA "SetupGetLineCountA" intptr, str
; res = SetupGetLineCountA(InfHandle, Section)
; InfHandle : void* -> "intptr"
; Section : LPCSTR -> "str"

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

var (
	setupapi = windows.NewLazySystemDLL("SETUPAPI.dll")
	procSetupGetLineCountA = setupapi.NewProc("SetupGetLineCountA")
)

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

function SetupGetLineCountA(
  InfHandle: Pointer;   // void*
  Section: PAnsiChar   // LPCSTR
): Integer; stdcall;
  external 'SETUPAPI.dll' name 'SetupGetLineCountA';

result := DllCall("SETUPAPI\SetupGetLineCountA"
    , "Ptr", InfHandle   ; void*
    , "AStr", Section   ; LPCSTR
    , "Int")   ; return: INT

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