GetPrivateProfileSectionNamesA

// KERNEL32.dll  (ANSI / -A)
#include <windows.h>

DWORD GetPrivateProfileSectionNamesA(
    LPSTR lpszReturnBuffer,   // optional
    DWORD nSize,
    LPCSTR lpFileName   // optional
);

<DllImport("KERNEL32.dll", CharSet:=CharSet.Ansi, ExactSpelling:=True)>
Public Shared Function GetPrivateProfileSectionNamesA(
    <MarshalAs(UnmanagedType.LPStr)> lpszReturnBuffer As System.Text.StringBuilder,   ' LPSTR optional, out
    nSize As UInteger,   ' DWORD
    <MarshalAs(UnmanagedType.LPStr)> lpFileName As String   ' LPCSTR optional
) As UInteger
End Function

' lpszReturnBuffer : LPSTR optional, out
' nSize : DWORD
' lpFileName : LPCSTR optional
Declare PtrSafe Function GetPrivateProfileSectionNamesA Lib "kernel32" ( _
    ByVal lpszReturnBuffer As String, _
    ByVal nSize As Long, _
    ByVal lpFileName 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

GetPrivateProfileSectionNamesA = ctypes.windll.kernel32.GetPrivateProfileSectionNamesA
GetPrivateProfileSectionNamesA.restype = wintypes.DWORD
GetPrivateProfileSectionNamesA.argtypes = [
    wintypes.LPSTR,  # lpszReturnBuffer : LPSTR optional, out
    wintypes.DWORD,  # nSize : DWORD
    wintypes.LPCSTR,  # lpFileName : LPCSTR optional
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('KERNEL32.dll')
GetPrivateProfileSectionNamesA = Fiddle::Function.new(
  lib['GetPrivateProfileSectionNamesA'],
  [
    Fiddle::TYPE_VOIDP,  # lpszReturnBuffer : LPSTR optional, out
    -Fiddle::TYPE_INT,  # nSize : DWORD
    Fiddle::TYPE_VOIDP,  # lpFileName : LPCSTR optional
  ],
  -Fiddle::TYPE_INT)

#[link(name = "kernel32")]
extern "system" {
    fn GetPrivateProfileSectionNamesA(
        lpszReturnBuffer: *mut u8,  // LPSTR optional, out
        nSize: u32,  // DWORD
        lpFileName: *const u8  // LPCSTR optional
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("KERNEL32.dll", CharSet = CharSet.Ansi)]
public static extern uint GetPrivateProfileSectionNamesA([MarshalAs(UnmanagedType.LPStr)] System.Text.StringBuilder lpszReturnBuffer, uint nSize, [MarshalAs(UnmanagedType.LPStr)] string lpFileName);
"@
$api = Add-Type -MemberDefinition $sig -Name 'KERNEL32_GetPrivateProfileSectionNamesA' -Namespace Win32 -PassThru
# $api::GetPrivateProfileSectionNamesA(lpszReturnBuffer, nSize, lpFileName)

#uselib "KERNEL32.dll"
#func global GetPrivateProfileSectionNamesA "GetPrivateProfileSectionNamesA" sptr, sptr, sptr
; GetPrivateProfileSectionNamesA varptr(lpszReturnBuffer), nSize, lpFileName   ; 戻り値は stat
; lpszReturnBuffer : LPSTR optional, out -> "sptr"
; nSize : DWORD -> "sptr"
; lpFileName : LPCSTR 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 "KERNEL32.dll"
#cfunc global GetPrivateProfileSectionNamesA "GetPrivateProfileSectionNamesA" var, int, str
; res = GetPrivateProfileSectionNamesA(lpszReturnBuffer, nSize, lpFileName)
; lpszReturnBuffer : LPSTR optional, out -> "var"
; nSize : DWORD -> "int"
; lpFileName : LPCSTR optional -> "str"
; ※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。

; DWORD GetPrivateProfileSectionNamesA(LPSTR lpszReturnBuffer, DWORD nSize, LPCSTR lpFileName)
#uselib "KERNEL32.dll"
#cfunc global GetPrivateProfileSectionNamesA "GetPrivateProfileSectionNamesA" var, int, str
; res = GetPrivateProfileSectionNamesA(lpszReturnBuffer, nSize, lpFileName)
; lpszReturnBuffer : LPSTR optional, out -> "var"
; nSize : DWORD -> "int"
; lpFileName : LPCSTR optional -> "str"
; ※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 (
	kernel32 = windows.NewLazySystemDLL("KERNEL32.dll")
	procGetPrivateProfileSectionNamesA = kernel32.NewProc("GetPrivateProfileSectionNamesA")
)

// lpszReturnBuffer (LPSTR optional, out), nSize (DWORD), lpFileName (LPCSTR optional)
r1, _, err := procGetPrivateProfileSectionNamesA.Call(
	uintptr(lpszReturnBuffer),
	uintptr(nSize),
	uintptr(unsafe.Pointer(windows.BytePtrFromString(lpFileName))),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function GetPrivateProfileSectionNamesA(
  lpszReturnBuffer: PAnsiChar;   // LPSTR optional, out
  nSize: DWORD;   // DWORD
  lpFileName: PAnsiChar   // LPCSTR optional
): DWORD; stdcall;
  external 'KERNEL32.dll' name 'GetPrivateProfileSectionNamesA';

result := DllCall("KERNEL32\GetPrivateProfileSectionNamesA"
    , "Ptr", lpszReturnBuffer   ; LPSTR optional, out
    , "UInt", nSize   ; DWORD
    , "AStr", lpFileName   ; LPCSTR optional
    , "UInt")   ; return: DWORD

●GetPrivateProfileSectionNamesA(lpszReturnBuffer, nSize, lpFileName) = DLL("KERNEL32.dll", "dword GetPrivateProfileSectionNamesA(char*, dword, char*)")
# 呼び出し: GetPrivateProfileSectionNamesA(lpszReturnBuffer, nSize, lpFileName)
# lpszReturnBuffer : LPSTR optional, out -> "char*"
# nSize : DWORD -> "dword"
# lpFileName : LPCSTR optional -> "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)。