PdhComputeCounterStatistics

// pdh.dll
#include <windows.h>

DWORD PdhComputeCounterStatistics(
    PDH_HCOUNTER hCounter,
    PDH_FMT dwFormat,
    DWORD dwFirstEntry,
    DWORD dwNumEntries,
    PDH_RAW_COUNTER* lpRawValueArray,
    PDH_STATISTICS* data
);

<DllImport("pdh.dll", ExactSpelling:=True)>
Public Shared Function PdhComputeCounterStatistics(
    hCounter As IntPtr,   ' PDH_HCOUNTER
    dwFormat As UInteger,   ' PDH_FMT
    dwFirstEntry As UInteger,   ' DWORD
    dwNumEntries As UInteger,   ' DWORD
    lpRawValueArray As IntPtr,   ' PDH_RAW_COUNTER*
    data As IntPtr   ' PDH_STATISTICS* out
) As UInteger
End Function

' hCounter : PDH_HCOUNTER
' dwFormat : PDH_FMT
' dwFirstEntry : DWORD
' dwNumEntries : DWORD
' lpRawValueArray : PDH_RAW_COUNTER*
' data : PDH_STATISTICS* out
Declare PtrSafe Function PdhComputeCounterStatistics Lib "pdh" ( _
    ByVal hCounter As LongPtr, _
    ByVal dwFormat As Long, _
    ByVal dwFirstEntry As Long, _
    ByVal dwNumEntries As Long, _
    ByVal lpRawValueArray As LongPtr, _
    ByVal data As LongPtr) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

PdhComputeCounterStatistics = ctypes.windll.pdh.PdhComputeCounterStatistics
PdhComputeCounterStatistics.restype = wintypes.DWORD
PdhComputeCounterStatistics.argtypes = [
    wintypes.HANDLE,  # hCounter : PDH_HCOUNTER
    wintypes.DWORD,  # dwFormat : PDH_FMT
    wintypes.DWORD,  # dwFirstEntry : DWORD
    wintypes.DWORD,  # dwNumEntries : DWORD
    ctypes.c_void_p,  # lpRawValueArray : PDH_RAW_COUNTER*
    ctypes.c_void_p,  # data : PDH_STATISTICS* out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('pdh.dll')
PdhComputeCounterStatistics = Fiddle::Function.new(
  lib['PdhComputeCounterStatistics'],
  [
    Fiddle::TYPE_VOIDP,  # hCounter : PDH_HCOUNTER
    -Fiddle::TYPE_INT,  # dwFormat : PDH_FMT
    -Fiddle::TYPE_INT,  # dwFirstEntry : DWORD
    -Fiddle::TYPE_INT,  # dwNumEntries : DWORD
    Fiddle::TYPE_VOIDP,  # lpRawValueArray : PDH_RAW_COUNTER*
    Fiddle::TYPE_VOIDP,  # data : PDH_STATISTICS* out
  ],
  -Fiddle::TYPE_INT)

#[link(name = "pdh")]
extern "system" {
    fn PdhComputeCounterStatistics(
        hCounter: *mut core::ffi::c_void,  // PDH_HCOUNTER
        dwFormat: u32,  // PDH_FMT
        dwFirstEntry: u32,  // DWORD
        dwNumEntries: u32,  // DWORD
        lpRawValueArray: *mut PDH_RAW_COUNTER,  // PDH_RAW_COUNTER*
        data: *mut PDH_STATISTICS  // PDH_STATISTICS* out
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("pdh.dll")]
public static extern uint PdhComputeCounterStatistics(IntPtr hCounter, uint dwFormat, uint dwFirstEntry, uint dwNumEntries, IntPtr lpRawValueArray, IntPtr data);
"@
$api = Add-Type -MemberDefinition $sig -Name 'pdh_PdhComputeCounterStatistics' -Namespace Win32 -PassThru
# $api::PdhComputeCounterStatistics(hCounter, dwFormat, dwFirstEntry, dwNumEntries, lpRawValueArray, data)

#uselib "pdh.dll"
#func global PdhComputeCounterStatistics "PdhComputeCounterStatistics" sptr, sptr, sptr, sptr, sptr, sptr
; PdhComputeCounterStatistics hCounter, dwFormat, dwFirstEntry, dwNumEntries, varptr(lpRawValueArray), varptr(data)   ; 戻り値は stat
; hCounter : PDH_HCOUNTER -> "sptr"
; dwFormat : PDH_FMT -> "sptr"
; dwFirstEntry : DWORD -> "sptr"
; dwNumEntries : DWORD -> "sptr"
; lpRawValueArray : PDH_RAW_COUNTER* -> "sptr"
; data : PDH_STATISTICS* 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 PdhComputeCounterStatistics "PdhComputeCounterStatistics" sptr, int, int, int, var, var
; res = PdhComputeCounterStatistics(hCounter, dwFormat, dwFirstEntry, dwNumEntries, lpRawValueArray, data)
; hCounter : PDH_HCOUNTER -> "sptr"
; dwFormat : PDH_FMT -> "int"
; dwFirstEntry : DWORD -> "int"
; dwNumEntries : DWORD -> "int"
; lpRawValueArray : PDH_RAW_COUNTER* -> "var"
; data : PDH_STATISTICS* 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 PdhComputeCounterStatistics(PDH_HCOUNTER hCounter, PDH_FMT dwFormat, DWORD dwFirstEntry, DWORD dwNumEntries, PDH_RAW_COUNTER* lpRawValueArray, PDH_STATISTICS* data)
#uselib "pdh.dll"
#cfunc global PdhComputeCounterStatistics "PdhComputeCounterStatistics" intptr, int, int, int, var, var
; res = PdhComputeCounterStatistics(hCounter, dwFormat, dwFirstEntry, dwNumEntries, lpRawValueArray, data)
; hCounter : PDH_HCOUNTER -> "intptr"
; dwFormat : PDH_FMT -> "int"
; dwFirstEntry : DWORD -> "int"
; dwNumEntries : DWORD -> "int"
; lpRawValueArray : PDH_RAW_COUNTER* -> "var"
; data : PDH_STATISTICS* 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")
	procPdhComputeCounterStatistics = pdh.NewProc("PdhComputeCounterStatistics")
)

// hCounter (PDH_HCOUNTER), dwFormat (PDH_FMT), dwFirstEntry (DWORD), dwNumEntries (DWORD), lpRawValueArray (PDH_RAW_COUNTER*), data (PDH_STATISTICS* out)
r1, _, err := procPdhComputeCounterStatistics.Call(
	uintptr(hCounter),
	uintptr(dwFormat),
	uintptr(dwFirstEntry),
	uintptr(dwNumEntries),
	uintptr(lpRawValueArray),
	uintptr(data),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function PdhComputeCounterStatistics(
  hCounter: THandle;   // PDH_HCOUNTER
  dwFormat: DWORD;   // PDH_FMT
  dwFirstEntry: DWORD;   // DWORD
  dwNumEntries: DWORD;   // DWORD
  lpRawValueArray: Pointer;   // PDH_RAW_COUNTER*
  data: Pointer   // PDH_STATISTICS* out
): DWORD; stdcall;
  external 'pdh.dll' name 'PdhComputeCounterStatistics';

result := DllCall("pdh\PdhComputeCounterStatistics"
    , "Ptr", hCounter   ; PDH_HCOUNTER
    , "UInt", dwFormat   ; PDH_FMT
    , "UInt", dwFirstEntry   ; DWORD
    , "UInt", dwNumEntries   ; DWORD
    , "Ptr", lpRawValueArray   ; PDH_RAW_COUNTER*
    , "Ptr", data   ; PDH_STATISTICS* out
    , "UInt")   ; return: DWORD

●PdhComputeCounterStatistics(hCounter, dwFormat, dwFirstEntry, dwNumEntries, lpRawValueArray, data) = DLL("pdh.dll", "dword PdhComputeCounterStatistics(void*, dword, dword, dword, void*, void*)")
# 呼び出し: PdhComputeCounterStatistics(hCounter, dwFormat, dwFirstEntry, dwNumEntries, lpRawValueArray, data)
# hCounter : PDH_HCOUNTER -> "void*"
# dwFormat : PDH_FMT -> "dword"
# dwFirstEntry : DWORD -> "dword"
# dwNumEntries : DWORD -> "dword"
# lpRawValueArray : PDH_RAW_COUNTER* -> "void*"
# data : PDH_STATISTICS* 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)。