PdhExpandCounterPathA

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

DWORD PdhExpandCounterPathA(
    LPCSTR szWildCardPath,
    LPSTR mszExpandedPathList,   // optional
    DWORD* pcchPathListLength
);

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

' szWildCardPath : LPCSTR
' mszExpandedPathList : LPSTR optional, out
' pcchPathListLength : DWORD* in/out
Declare PtrSafe Function PdhExpandCounterPathA Lib "pdh" ( _
    ByVal szWildCardPath As String, _
    ByVal mszExpandedPathList As String, _
    ByRef pcchPathListLength 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

PdhExpandCounterPathA = ctypes.windll.pdh.PdhExpandCounterPathA
PdhExpandCounterPathA.restype = wintypes.DWORD
PdhExpandCounterPathA.argtypes = [
    wintypes.LPCSTR,  # szWildCardPath : LPCSTR
    wintypes.LPSTR,  # mszExpandedPathList : LPSTR optional, out
    ctypes.POINTER(wintypes.DWORD),  # pcchPathListLength : DWORD* in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('pdh.dll')
PdhExpandCounterPathA = Fiddle::Function.new(
  lib['PdhExpandCounterPathA'],
  [
    Fiddle::TYPE_VOIDP,  # szWildCardPath : LPCSTR
    Fiddle::TYPE_VOIDP,  # mszExpandedPathList : LPSTR optional, out
    Fiddle::TYPE_VOIDP,  # pcchPathListLength : DWORD* in/out
  ],
  -Fiddle::TYPE_INT)

#[link(name = "pdh")]
extern "system" {
    fn PdhExpandCounterPathA(
        szWildCardPath: *const u8,  // LPCSTR
        mszExpandedPathList: *mut u8,  // LPSTR optional, out
        pcchPathListLength: *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 PdhExpandCounterPathA([MarshalAs(UnmanagedType.LPStr)] string szWildCardPath, [MarshalAs(UnmanagedType.LPStr)] System.Text.StringBuilder mszExpandedPathList, ref uint pcchPathListLength);
"@
$api = Add-Type -MemberDefinition $sig -Name 'pdh_PdhExpandCounterPathA' -Namespace Win32 -PassThru
# $api::PdhExpandCounterPathA(szWildCardPath, mszExpandedPathList, pcchPathListLength)

#uselib "pdh.dll"
#func global PdhExpandCounterPathA "PdhExpandCounterPathA" sptr, sptr, sptr
; PdhExpandCounterPathA szWildCardPath, varptr(mszExpandedPathList), varptr(pcchPathListLength)   ; 戻り値は stat
; szWildCardPath : LPCSTR -> "sptr"
; mszExpandedPathList : LPSTR optional, out -> "sptr"
; pcchPathListLength : 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 PdhExpandCounterPathA "PdhExpandCounterPathA" str, var, var
; res = PdhExpandCounterPathA(szWildCardPath, mszExpandedPathList, pcchPathListLength)
; szWildCardPath : LPCSTR -> "str"
; mszExpandedPathList : LPSTR optional, out -> "var"
; pcchPathListLength : 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 PdhExpandCounterPathA(LPCSTR szWildCardPath, LPSTR mszExpandedPathList, DWORD* pcchPathListLength)
#uselib "pdh.dll"
#cfunc global PdhExpandCounterPathA "PdhExpandCounterPathA" str, var, var
; res = PdhExpandCounterPathA(szWildCardPath, mszExpandedPathList, pcchPathListLength)
; szWildCardPath : LPCSTR -> "str"
; mszExpandedPathList : LPSTR optional, out -> "var"
; pcchPathListLength : 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")
	procPdhExpandCounterPathA = pdh.NewProc("PdhExpandCounterPathA")
)

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

function PdhExpandCounterPathA(
  szWildCardPath: PAnsiChar;   // LPCSTR
  mszExpandedPathList: PAnsiChar;   // LPSTR optional, out
  pcchPathListLength: Pointer   // DWORD* in/out
): DWORD; stdcall;
  external 'pdh.dll' name 'PdhExpandCounterPathA';

result := DllCall("pdh\PdhExpandCounterPathA"
    , "AStr", szWildCardPath   ; LPCSTR
    , "Ptr", mszExpandedPathList   ; LPSTR optional, out
    , "Ptr", pcchPathListLength   ; DWORD* in/out
    , "UInt")   ; return: DWORD

●PdhExpandCounterPathA(szWildCardPath, mszExpandedPathList, pcchPathListLength) = DLL("pdh.dll", "dword PdhExpandCounterPathA(char*, char*, void*)")
# 呼び出し: PdhExpandCounterPathA(szWildCardPath, mszExpandedPathList, pcchPathListLength)
# szWildCardPath : LPCSTR -> "char*"
# mszExpandedPathList : LPSTR optional, out -> "char*"
# pcchPathListLength : 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)。