CreateThreadpoolWork

// KERNEL32.dll
#include <windows.h>

PTP_WORK CreateThreadpoolWork(
    PTP_WORK_CALLBACK pfnwk,
    void* pv,   // optional
    TP_CALLBACK_ENVIRON_V3* pcbe   // optional
);

<DllImport("KERNEL32.dll", SetLastError:=True, ExactSpelling:=True)>
Public Shared Function CreateThreadpoolWork(
    pfnwk As IntPtr,   ' PTP_WORK_CALLBACK
    pv As IntPtr,   ' void* optional, in/out
    pcbe As IntPtr   ' TP_CALLBACK_ENVIRON_V3* optional
) As IntPtr
End Function

' pfnwk : PTP_WORK_CALLBACK
' pv : void* optional, in/out
' pcbe : TP_CALLBACK_ENVIRON_V3* optional
Declare PtrSafe Function CreateThreadpoolWork Lib "kernel32" ( _
    ByVal pfnwk As LongPtr, _
    ByVal pv As LongPtr, _
    ByVal pcbe As LongPtr) As LongPtr
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

CreateThreadpoolWork = ctypes.windll.kernel32.CreateThreadpoolWork
CreateThreadpoolWork.restype = ctypes.c_ssize_t
CreateThreadpoolWork.argtypes = [
    ctypes.c_void_p,  # pfnwk : PTP_WORK_CALLBACK
    ctypes.POINTER(None),  # pv : void* optional, in/out
    ctypes.c_void_p,  # pcbe : TP_CALLBACK_ENVIRON_V3* optional
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('KERNEL32.dll')
CreateThreadpoolWork = Fiddle::Function.new(
  lib['CreateThreadpoolWork'],
  [
    Fiddle::TYPE_VOIDP,  # pfnwk : PTP_WORK_CALLBACK
    Fiddle::TYPE_VOIDP,  # pv : void* optional, in/out
    Fiddle::TYPE_VOIDP,  # pcbe : TP_CALLBACK_ENVIRON_V3* optional
  ],
  Fiddle::TYPE_INTPTR_T)

#[link(name = "kernel32")]
extern "system" {
    fn CreateThreadpoolWork(
        pfnwk: *const core::ffi::c_void,  // PTP_WORK_CALLBACK
        pv: *mut (),  // void* optional, in/out
        pcbe: *mut TP_CALLBACK_ENVIRON_V3  // TP_CALLBACK_ENVIRON_V3* optional
    ) -> isize;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("KERNEL32.dll", SetLastError = true)]
public static extern IntPtr CreateThreadpoolWork(IntPtr pfnwk, IntPtr pv, IntPtr pcbe);
"@
$api = Add-Type -MemberDefinition $sig -Name 'KERNEL32_CreateThreadpoolWork' -Namespace Win32 -PassThru
# $api::CreateThreadpoolWork(pfnwk, pv, pcbe)

#uselib "KERNEL32.dll"
#func global CreateThreadpoolWork "CreateThreadpoolWork" sptr, sptr, sptr
; CreateThreadpoolWork pfnwk, pv, varptr(pcbe)   ; 戻り値は stat
; pfnwk : PTP_WORK_CALLBACK -> "sptr"
; pv : void* optional, in/out -> "sptr"
; pcbe : TP_CALLBACK_ENVIRON_V3* 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 CreateThreadpoolWork "CreateThreadpoolWork" sptr, sptr, var
; res = CreateThreadpoolWork(pfnwk, pv, pcbe)
; pfnwk : PTP_WORK_CALLBACK -> "sptr"
; pv : void* optional, in/out -> "sptr"
; pcbe : TP_CALLBACK_ENVIRON_V3* optional -> "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。

; PTP_WORK CreateThreadpoolWork(PTP_WORK_CALLBACK pfnwk, void* pv, TP_CALLBACK_ENVIRON_V3* pcbe)
#uselib "KERNEL32.dll"
#cfunc global CreateThreadpoolWork "CreateThreadpoolWork" intptr, intptr, var
; res = CreateThreadpoolWork(pfnwk, pv, pcbe)
; pfnwk : PTP_WORK_CALLBACK -> "intptr"
; pv : void* optional, in/out -> "intptr"
; pcbe : TP_CALLBACK_ENVIRON_V3* optional -> "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 (
	kernel32 = windows.NewLazySystemDLL("KERNEL32.dll")
	procCreateThreadpoolWork = kernel32.NewProc("CreateThreadpoolWork")
)

// pfnwk (PTP_WORK_CALLBACK), pv (void* optional, in/out), pcbe (TP_CALLBACK_ENVIRON_V3* optional)
r1, _, err := procCreateThreadpoolWork.Call(
	uintptr(pfnwk),
	uintptr(pv),
	uintptr(pcbe),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // PTP_WORK

function CreateThreadpoolWork(
  pfnwk: Pointer;   // PTP_WORK_CALLBACK
  pv: Pointer;   // void* optional, in/out
  pcbe: Pointer   // TP_CALLBACK_ENVIRON_V3* optional
): NativeInt; stdcall;
  external 'KERNEL32.dll' name 'CreateThreadpoolWork';

result := DllCall("KERNEL32\CreateThreadpoolWork"
    , "Ptr", pfnwk   ; PTP_WORK_CALLBACK
    , "Ptr", pv   ; void* optional, in/out
    , "Ptr", pcbe   ; TP_CALLBACK_ENVIRON_V3* optional
    , "Ptr")   ; return: PTP_WORK

●CreateThreadpoolWork(pfnwk, pv, pcbe) = DLL("KERNEL32.dll", "int CreateThreadpoolWork(void*, void*, void*)")
# 呼び出し: CreateThreadpoolWork(pfnwk, pv, pcbe)
# pfnwk : PTP_WORK_CALLBACK -> "void*"
# pv : void* optional, in/out -> "void*"
# pcbe : TP_CALLBACK_ENVIRON_V3* optional -> "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)。