MFLockSharedWorkQueue

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

HRESULT MFLockSharedWorkQueue(
    LPCWSTR wszClass,
    INT BasePriority,
    DWORD* pdwTaskId,
    DWORD* pID
);

<DllImport("MFPlat.dll", ExactSpelling:=True)>
Public Shared Function MFLockSharedWorkQueue(
    <MarshalAs(UnmanagedType.LPWStr)> wszClass As String,   ' LPCWSTR
    BasePriority As Integer,   ' INT
    ByRef pdwTaskId As UInteger,   ' DWORD* in/out
    <Out> ByRef pID As UInteger   ' DWORD* out
) As Integer
End Function

' wszClass : LPCWSTR
' BasePriority : INT
' pdwTaskId : DWORD* in/out
' pID : DWORD* out
Declare PtrSafe Function MFLockSharedWorkQueue Lib "mfplat" ( _
    ByVal wszClass As LongPtr, _
    ByVal BasePriority As Long, _
    ByRef pdwTaskId As Long, _
    ByRef pID 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

MFLockSharedWorkQueue = ctypes.windll.mfplat.MFLockSharedWorkQueue
MFLockSharedWorkQueue.restype = ctypes.c_int
MFLockSharedWorkQueue.argtypes = [
    wintypes.LPCWSTR,  # wszClass : LPCWSTR
    ctypes.c_int,  # BasePriority : INT
    ctypes.POINTER(wintypes.DWORD),  # pdwTaskId : DWORD* in/out
    ctypes.POINTER(wintypes.DWORD),  # pID : DWORD* out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('MFPlat.dll')
MFLockSharedWorkQueue = Fiddle::Function.new(
  lib['MFLockSharedWorkQueue'],
  [
    Fiddle::TYPE_VOIDP,  # wszClass : LPCWSTR
    Fiddle::TYPE_INT,  # BasePriority : INT
    Fiddle::TYPE_VOIDP,  # pdwTaskId : DWORD* in/out
    Fiddle::TYPE_VOIDP,  # pID : DWORD* out
  ],
  Fiddle::TYPE_INT)

#[link(name = "mfplat")]
extern "system" {
    fn MFLockSharedWorkQueue(
        wszClass: *const u16,  // LPCWSTR
        BasePriority: i32,  // INT
        pdwTaskId: *mut u32,  // DWORD* in/out
        pID: *mut u32  // DWORD* out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("MFPlat.dll")]
public static extern int MFLockSharedWorkQueue([MarshalAs(UnmanagedType.LPWStr)] string wszClass, int BasePriority, ref uint pdwTaskId, out uint pID);
"@
$api = Add-Type -MemberDefinition $sig -Name 'MFPlat_MFLockSharedWorkQueue' -Namespace Win32 -PassThru
# $api::MFLockSharedWorkQueue(wszClass, BasePriority, pdwTaskId, pID)

#uselib "MFPlat.dll"
#func global MFLockSharedWorkQueue "MFLockSharedWorkQueue" sptr, sptr, sptr, sptr
; MFLockSharedWorkQueue wszClass, BasePriority, varptr(pdwTaskId), varptr(pID)   ; 戻り値は stat
; wszClass : LPCWSTR -> "sptr"
; BasePriority : INT -> "sptr"
; pdwTaskId : DWORD* in/out -> "sptr"
; pID : DWORD* 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 "MFPlat.dll"
#cfunc global MFLockSharedWorkQueue "MFLockSharedWorkQueue" wstr, int, var, var
; res = MFLockSharedWorkQueue(wszClass, BasePriority, pdwTaskId, pID)
; wszClass : LPCWSTR -> "wstr"
; BasePriority : INT -> "int"
; pdwTaskId : DWORD* in/out -> "var"
; pID : DWORD* 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。

; HRESULT MFLockSharedWorkQueue(LPCWSTR wszClass, INT BasePriority, DWORD* pdwTaskId, DWORD* pID)
#uselib "MFPlat.dll"
#cfunc global MFLockSharedWorkQueue "MFLockSharedWorkQueue" wstr, int, var, var
; res = MFLockSharedWorkQueue(wszClass, BasePriority, pdwTaskId, pID)
; wszClass : LPCWSTR -> "wstr"
; BasePriority : INT -> "int"
; pdwTaskId : DWORD* in/out -> "var"
; pID : DWORD* 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")
	procMFLockSharedWorkQueue = mfplat.NewProc("MFLockSharedWorkQueue")
)

// wszClass (LPCWSTR), BasePriority (INT), pdwTaskId (DWORD* in/out), pID (DWORD* out)
r1, _, err := procMFLockSharedWorkQueue.Call(
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(wszClass))),
	uintptr(BasePriority),
	uintptr(pdwTaskId),
	uintptr(pID),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function MFLockSharedWorkQueue(
  wszClass: PWideChar;   // LPCWSTR
  BasePriority: Integer;   // INT
  pdwTaskId: Pointer;   // DWORD* in/out
  pID: Pointer   // DWORD* out
): Integer; stdcall;
  external 'MFPlat.dll' name 'MFLockSharedWorkQueue';

result := DllCall("MFPlat\MFLockSharedWorkQueue"
    , "WStr", wszClass   ; LPCWSTR
    , "Int", BasePriority   ; INT
    , "Ptr", pdwTaskId   ; DWORD* in/out
    , "Ptr", pID   ; DWORD* out
    , "Int")   ; return: HRESULT

●MFLockSharedWorkQueue(wszClass, BasePriority, pdwTaskId, pID) = DLL("MFPlat.dll", "int MFLockSharedWorkQueue(char*, int, void*, void*)")
# 呼び出し: MFLockSharedWorkQueue(wszClass, BasePriority, pdwTaskId, pID)
# wszClass : LPCWSTR -> "char*"
# BasePriority : INT -> "int"
# pdwTaskId : DWORD* in/out -> "void*"
# pID : DWORD* 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)。