PdhEnumLogSetNamesA

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

DWORD PdhEnumLogSetNamesA(
    LPCSTR szDataSource,
    LPSTR mszDataSetNameList,   // optional
    DWORD* pcchBufferLength
);

<DllImport("pdh.dll", CharSet:=CharSet.Ansi, ExactSpelling:=True)>
Public Shared Function PdhEnumLogSetNamesA(
    <MarshalAs(UnmanagedType.LPStr)> szDataSource As String,   ' LPCSTR
    <MarshalAs(UnmanagedType.LPStr)> mszDataSetNameList As System.Text.StringBuilder,   ' LPSTR optional, out
    ByRef pcchBufferLength As UInteger   ' DWORD* in/out
) As UInteger
End Function

' szDataSource : LPCSTR
' mszDataSetNameList : LPSTR optional, out
' pcchBufferLength : DWORD* in/out
Declare PtrSafe Function PdhEnumLogSetNamesA Lib "pdh" ( _
    ByVal szDataSource As String, _
    ByVal mszDataSetNameList As String, _
    ByRef pcchBufferLength As Long) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

PdhEnumLogSetNamesA = ctypes.windll.pdh.PdhEnumLogSetNamesA
PdhEnumLogSetNamesA.restype = wintypes.DWORD
PdhEnumLogSetNamesA.argtypes = [
    wintypes.LPCSTR,  # szDataSource : LPCSTR
    wintypes.LPSTR,  # mszDataSetNameList : LPSTR optional, out
    ctypes.POINTER(wintypes.DWORD),  # pcchBufferLength : DWORD* in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('pdh.dll')
PdhEnumLogSetNamesA = Fiddle::Function.new(
  lib['PdhEnumLogSetNamesA'],
  [
    Fiddle::TYPE_VOIDP,  # szDataSource : LPCSTR
    Fiddle::TYPE_VOIDP,  # mszDataSetNameList : LPSTR optional, out
    Fiddle::TYPE_VOIDP,  # pcchBufferLength : DWORD* in/out
  ],
  -Fiddle::TYPE_INT)

#[link(name = "pdh")]
extern "system" {
    fn PdhEnumLogSetNamesA(
        szDataSource: *const u8,  // LPCSTR
        mszDataSetNameList: *mut u8,  // LPSTR optional, out
        pcchBufferLength: *mut u32  // DWORD* in/out
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("pdh.dll", CharSet = CharSet.Ansi)]
public static extern uint PdhEnumLogSetNamesA([MarshalAs(UnmanagedType.LPStr)] string szDataSource, [MarshalAs(UnmanagedType.LPStr)] System.Text.StringBuilder mszDataSetNameList, ref uint pcchBufferLength);
"@
$api = Add-Type -MemberDefinition $sig -Name 'pdh_PdhEnumLogSetNamesA' -Namespace Win32 -PassThru
# $api::PdhEnumLogSetNamesA(szDataSource, mszDataSetNameList, pcchBufferLength)

#uselib "pdh.dll"
#func global PdhEnumLogSetNamesA "PdhEnumLogSetNamesA" sptr, sptr, sptr
; PdhEnumLogSetNamesA szDataSource, varptr(mszDataSetNameList), varptr(pcchBufferLength)   ; 戻り値は stat
; szDataSource : LPCSTR -> "sptr"
; mszDataSetNameList : LPSTR optional, out -> "sptr"
; pcchBufferLength : DWORD* in/out -> "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 "pdh.dll"
#cfunc global PdhEnumLogSetNamesA "PdhEnumLogSetNamesA" str, var, var
; res = PdhEnumLogSetNamesA(szDataSource, mszDataSetNameList, pcchBufferLength)
; szDataSource : LPCSTR -> "str"
; mszDataSetNameList : LPSTR optional, out -> "var"
; pcchBufferLength : DWORD* in/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。

; DWORD PdhEnumLogSetNamesA(LPCSTR szDataSource, LPSTR mszDataSetNameList, DWORD* pcchBufferLength)
#uselib "pdh.dll"
#cfunc global PdhEnumLogSetNamesA "PdhEnumLogSetNamesA" str, var, var
; res = PdhEnumLogSetNamesA(szDataSource, mszDataSetNameList, pcchBufferLength)
; szDataSource : LPCSTR -> "str"
; mszDataSetNameList : LPSTR optional, out -> "var"
; pcchBufferLength : DWORD* in/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 (
	pdh = windows.NewLazySystemDLL("pdh.dll")
	procPdhEnumLogSetNamesA = pdh.NewProc("PdhEnumLogSetNamesA")
)

// szDataSource (LPCSTR), mszDataSetNameList (LPSTR optional, out), pcchBufferLength (DWORD* in/out)
r1, _, err := procPdhEnumLogSetNamesA.Call(
	uintptr(unsafe.Pointer(windows.BytePtrFromString(szDataSource))),
	uintptr(mszDataSetNameList),
	uintptr(pcchBufferLength),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function PdhEnumLogSetNamesA(
  szDataSource: PAnsiChar;   // LPCSTR
  mszDataSetNameList: PAnsiChar;   // LPSTR optional, out
  pcchBufferLength: Pointer   // DWORD* in/out
): DWORD; stdcall;
  external 'pdh.dll' name 'PdhEnumLogSetNamesA';

result := DllCall("pdh\PdhEnumLogSetNamesA"
    , "AStr", szDataSource   ; LPCSTR
    , "Ptr", mszDataSetNameList   ; LPSTR optional, out
    , "Ptr", pcchBufferLength   ; DWORD* in/out
    , "UInt")   ; return: DWORD

●PdhEnumLogSetNamesA(szDataSource, mszDataSetNameList, pcchBufferLength) = DLL("pdh.dll", "dword PdhEnumLogSetNamesA(char*, char*, void*)")
# 呼び出し: PdhEnumLogSetNamesA(szDataSource, mszDataSetNameList, pcchBufferLength)
# szDataSource : LPCSTR -> "char*"
# mszDataSetNameList : LPSTR optional, out -> "char*"
# pcchBufferLength : DWORD* in/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)。