MFScheduleWorkItem

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

HRESULT MFScheduleWorkItem(
    IMFAsyncCallback* pCallback,
    IUnknown* pState,
    LONGLONG Timeout,
    ULONGLONG* pKey   // optional
);

<DllImport("MFPlat.dll", ExactSpelling:=True)>
Public Shared Function MFScheduleWorkItem(
    pCallback As IntPtr,   ' IMFAsyncCallback*
    pState As IntPtr,   ' IUnknown*
    Timeout As Long,   ' LONGLONG
    pKey As IntPtr   ' ULONGLONG* optional, out
) As Integer
End Function

' pCallback : IMFAsyncCallback*
' pState : IUnknown*
' Timeout : LONGLONG
' pKey : ULONGLONG* optional, out
Declare PtrSafe Function MFScheduleWorkItem Lib "mfplat" ( _
    ByVal pCallback As LongPtr, _
    ByVal pState As LongPtr, _
    ByVal Timeout As LongLong, _
    ByVal pKey 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

MFScheduleWorkItem = ctypes.windll.mfplat.MFScheduleWorkItem
MFScheduleWorkItem.restype = ctypes.c_int
MFScheduleWorkItem.argtypes = [
    ctypes.c_void_p,  # pCallback : IMFAsyncCallback*
    ctypes.c_void_p,  # pState : IUnknown*
    ctypes.c_longlong,  # Timeout : LONGLONG
    ctypes.POINTER(ctypes.c_ulonglong),  # pKey : ULONGLONG* optional, out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('MFPlat.dll')
MFScheduleWorkItem = Fiddle::Function.new(
  lib['MFScheduleWorkItem'],
  [
    Fiddle::TYPE_VOIDP,  # pCallback : IMFAsyncCallback*
    Fiddle::TYPE_VOIDP,  # pState : IUnknown*
    Fiddle::TYPE_LONG_LONG,  # Timeout : LONGLONG
    Fiddle::TYPE_VOIDP,  # pKey : ULONGLONG* optional, out
  ],
  Fiddle::TYPE_INT)

#[link(name = "mfplat")]
extern "system" {
    fn MFScheduleWorkItem(
        pCallback: *mut core::ffi::c_void,  // IMFAsyncCallback*
        pState: *mut core::ffi::c_void,  // IUnknown*
        Timeout: i64,  // LONGLONG
        pKey: *mut u64  // ULONGLONG* optional, out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("MFPlat.dll")]
public static extern int MFScheduleWorkItem(IntPtr pCallback, IntPtr pState, long Timeout, IntPtr pKey);
"@
$api = Add-Type -MemberDefinition $sig -Name 'MFPlat_MFScheduleWorkItem' -Namespace Win32 -PassThru
# $api::MFScheduleWorkItem(pCallback, pState, Timeout, pKey)

#uselib "MFPlat.dll"
#func global MFScheduleWorkItem "MFScheduleWorkItem" sptr, sptr, sptr, sptr
; MFScheduleWorkItem pCallback, pState, Timeout, varptr(pKey)   ; 戻り値は stat
; pCallback : IMFAsyncCallback* -> "sptr"
; pState : IUnknown* -> "sptr"
; Timeout : LONGLONG -> "sptr"
; pKey : ULONGLONG* optional, out -> "sptr"
; ※HSP3.7は int64 引数(64bit値渡し)に非対応です。
; ※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 "MFPlat.dll"
#cfunc global MFScheduleWorkItem "MFScheduleWorkItem" sptr, sptr, int64, var
; res = MFScheduleWorkItem(pCallback, pState, Timeout, pKey)
; pCallback : IMFAsyncCallback* -> "sptr"
; pState : IUnknown* -> "sptr"
; Timeout : LONGLONG -> "int64"
; pKey : ULONGLONG* optional, 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。
; ※int64 引数の DLL 値渡しは x64 ランタイム(hsp3_64)のみ対応(x86 は未対応)。

; HRESULT MFScheduleWorkItem(IMFAsyncCallback* pCallback, IUnknown* pState, LONGLONG Timeout, ULONGLONG* pKey)
#uselib "MFPlat.dll"
#cfunc global MFScheduleWorkItem "MFScheduleWorkItem" intptr, intptr, int64, var
; res = MFScheduleWorkItem(pCallback, pState, Timeout, pKey)
; pCallback : IMFAsyncCallback* -> "intptr"
; pState : IUnknown* -> "intptr"
; Timeout : LONGLONG -> "int64"
; pKey : ULONGLONG* optional, 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 (
	mfplat = windows.NewLazySystemDLL("MFPlat.dll")
	procMFScheduleWorkItem = mfplat.NewProc("MFScheduleWorkItem")
)

// pCallback (IMFAsyncCallback*), pState (IUnknown*), Timeout (LONGLONG), pKey (ULONGLONG* optional, out)
r1, _, err := procMFScheduleWorkItem.Call(
	uintptr(pCallback),
	uintptr(pState),
	uintptr(Timeout),
	uintptr(pKey),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function MFScheduleWorkItem(
  pCallback: Pointer;   // IMFAsyncCallback*
  pState: Pointer;   // IUnknown*
  Timeout: Int64;   // LONGLONG
  pKey: Pointer   // ULONGLONG* optional, out
): Integer; stdcall;
  external 'MFPlat.dll' name 'MFScheduleWorkItem';

result := DllCall("MFPlat\MFScheduleWorkItem"
    , "Ptr", pCallback   ; IMFAsyncCallback*
    , "Ptr", pState   ; IUnknown*
    , "Int64", Timeout   ; LONGLONG
    , "Ptr", pKey   ; ULONGLONG* optional, out
    , "Int")   ; return: HRESULT

●MFScheduleWorkItem(pCallback, pState, Timeout, pKey) = DLL("MFPlat.dll", "int MFScheduleWorkItem(void*, void*, int64, void*)")
# 呼び出し: MFScheduleWorkItem(pCallback, pState, Timeout, pKey)
# pCallback : IMFAsyncCallback* -> "void*"
# pState : IUnknown* -> "void*"
# Timeout : LONGLONG -> "int64"
# pKey : ULONGLONG* optional, 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)。