PdhUpdateLogW

// pdh.dll  (Unicode / -W)
#include <windows.h>

DWORD PdhUpdateLogW(
    PDH_HLOG hLog,
    LPCWSTR szUserString   // optional
);

<DllImport("pdh.dll", CharSet:=CharSet.Unicode, ExactSpelling:=True)>
Public Shared Function PdhUpdateLogW(
    hLog As IntPtr,   ' PDH_HLOG
    <MarshalAs(UnmanagedType.LPWStr)> szUserString As String   ' LPCWSTR optional
) As UInteger
End Function

' hLog : PDH_HLOG
' szUserString : LPCWSTR optional
Declare PtrSafe Function PdhUpdateLogW Lib "pdh" ( _
    ByVal hLog As LongPtr, _
    ByVal szUserString As LongPtr) As Long
' Unicode(W): 文字列は ByVal As LongPtr とし StrPtr(unicodeStr) を渡す
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

PdhUpdateLogW = ctypes.windll.pdh.PdhUpdateLogW
PdhUpdateLogW.restype = wintypes.DWORD
PdhUpdateLogW.argtypes = [
    wintypes.HANDLE,  # hLog : PDH_HLOG
    wintypes.LPCWSTR,  # szUserString : LPCWSTR optional
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('pdh.dll')
PdhUpdateLogW = Fiddle::Function.new(
  lib['PdhUpdateLogW'],
  [
    Fiddle::TYPE_VOIDP,  # hLog : PDH_HLOG
    Fiddle::TYPE_VOIDP,  # szUserString : LPCWSTR optional
  ],
  -Fiddle::TYPE_INT)
# Wide strings: pass str.encode("UTF-16LE") + "\x00\x00"

#[link(name = "pdh")]
extern "system" {
    fn PdhUpdateLogW(
        hLog: *mut core::ffi::c_void,  // PDH_HLOG
        szUserString: *const u16  // LPCWSTR optional
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("pdh.dll", CharSet = CharSet.Unicode)]
public static extern uint PdhUpdateLogW(IntPtr hLog, [MarshalAs(UnmanagedType.LPWStr)] string szUserString);
"@
$api = Add-Type -MemberDefinition $sig -Name 'pdh_PdhUpdateLogW' -Namespace Win32 -PassThru
# $api::PdhUpdateLogW(hLog, szUserString)

#uselib "pdh.dll"
#func global PdhUpdateLogW "PdhUpdateLogW" wptr, wptr
; PdhUpdateLogW hLog, szUserString   ; 戻り値は stat
; hLog : PDH_HLOG -> "wptr"
; szUserString : LPCWSTR optional -> "wptr"
; ※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 PdhUpdateLogW "PdhUpdateLogW" sptr, wstr
; res = PdhUpdateLogW(hLog, szUserString)
; hLog : PDH_HLOG -> "sptr"
; szUserString : LPCWSTR optional -> "wstr"

; DWORD PdhUpdateLogW(PDH_HLOG hLog, LPCWSTR szUserString)
#uselib "pdh.dll"
#cfunc global PdhUpdateLogW "PdhUpdateLogW" intptr, wstr
; res = PdhUpdateLogW(hLog, szUserString)
; hLog : PDH_HLOG -> "intptr"
; szUserString : LPCWSTR optional -> "wstr"

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

var (
	pdh = windows.NewLazySystemDLL("pdh.dll")
	procPdhUpdateLogW = pdh.NewProc("PdhUpdateLogW")
)

// hLog (PDH_HLOG), szUserString (LPCWSTR optional)
r1, _, err := procPdhUpdateLogW.Call(
	uintptr(hLog),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(szUserString))),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function PdhUpdateLogW(
  hLog: THandle;   // PDH_HLOG
  szUserString: PWideChar   // LPCWSTR optional
): DWORD; stdcall;
  external 'pdh.dll' name 'PdhUpdateLogW';

result := DllCall("pdh\PdhUpdateLogW"
    , "Ptr", hLog   ; PDH_HLOG
    , "WStr", szUserString   ; LPCWSTR optional
    , "UInt")   ; return: DWORD

●PdhUpdateLogW(hLog, szUserString) = DLL("pdh.dll", "dword PdhUpdateLogW(void*, char*)")
# 呼び出し: PdhUpdateLogW(hLog, szUserString)
# hLog : PDH_HLOG -> "void*"
# szUserString : LPCWSTR 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)。
# ※-W(Unicode)関数。なでしこ1はANSIのため -A 版の利用を推奨。