UnlockFileEx

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

BOOL UnlockFileEx(
    HANDLE hFile,
    DWORD dwReserved,   // optional
    DWORD nNumberOfBytesToUnlockLow,
    DWORD nNumberOfBytesToUnlockHigh,
    OVERLAPPED* lpOverlapped
);

<DllImport("KERNEL32.dll", SetLastError:=True, ExactSpelling:=True)>
Public Shared Function UnlockFileEx(
    hFile As IntPtr,   ' HANDLE
    dwReserved As UInteger,   ' DWORD optional
    nNumberOfBytesToUnlockLow As UInteger,   ' DWORD
    nNumberOfBytesToUnlockHigh As UInteger,   ' DWORD
    lpOverlapped As IntPtr   ' OVERLAPPED* in/out
) As Boolean
End Function

' hFile : HANDLE
' dwReserved : DWORD optional
' nNumberOfBytesToUnlockLow : DWORD
' nNumberOfBytesToUnlockHigh : DWORD
' lpOverlapped : OVERLAPPED* in/out
Declare PtrSafe Function UnlockFileEx Lib "kernel32" ( _
    ByVal hFile As LongPtr, _
    ByVal dwReserved As Long, _
    ByVal nNumberOfBytesToUnlockLow As Long, _
    ByVal nNumberOfBytesToUnlockHigh As Long, _
    ByVal lpOverlapped 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

UnlockFileEx = ctypes.windll.kernel32.UnlockFileEx
UnlockFileEx.restype = wintypes.BOOL
UnlockFileEx.argtypes = [
    wintypes.HANDLE,  # hFile : HANDLE
    wintypes.DWORD,  # dwReserved : DWORD optional
    wintypes.DWORD,  # nNumberOfBytesToUnlockLow : DWORD
    wintypes.DWORD,  # nNumberOfBytesToUnlockHigh : DWORD
    ctypes.c_void_p,  # lpOverlapped : OVERLAPPED* in/out
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('KERNEL32.dll')
UnlockFileEx = Fiddle::Function.new(
  lib['UnlockFileEx'],
  [
    Fiddle::TYPE_VOIDP,  # hFile : HANDLE
    -Fiddle::TYPE_INT,  # dwReserved : DWORD optional
    -Fiddle::TYPE_INT,  # nNumberOfBytesToUnlockLow : DWORD
    -Fiddle::TYPE_INT,  # nNumberOfBytesToUnlockHigh : DWORD
    Fiddle::TYPE_VOIDP,  # lpOverlapped : OVERLAPPED* in/out
  ],
  Fiddle::TYPE_INT)

#[link(name = "kernel32")]
extern "system" {
    fn UnlockFileEx(
        hFile: *mut core::ffi::c_void,  // HANDLE
        dwReserved: u32,  // DWORD optional
        nNumberOfBytesToUnlockLow: u32,  // DWORD
        nNumberOfBytesToUnlockHigh: u32,  // DWORD
        lpOverlapped: *mut OVERLAPPED  // OVERLAPPED* in/out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("KERNEL32.dll", SetLastError = true)]
public static extern bool UnlockFileEx(IntPtr hFile, uint dwReserved, uint nNumberOfBytesToUnlockLow, uint nNumberOfBytesToUnlockHigh, IntPtr lpOverlapped);
"@
$api = Add-Type -MemberDefinition $sig -Name 'KERNEL32_UnlockFileEx' -Namespace Win32 -PassThru
# $api::UnlockFileEx(hFile, dwReserved, nNumberOfBytesToUnlockLow, nNumberOfBytesToUnlockHigh, lpOverlapped)

#uselib "KERNEL32.dll"
#func global UnlockFileEx "UnlockFileEx" sptr, sptr, sptr, sptr, sptr
; UnlockFileEx hFile, dwReserved, nNumberOfBytesToUnlockLow, nNumberOfBytesToUnlockHigh, varptr(lpOverlapped)   ; 戻り値は stat
; hFile : HANDLE -> "sptr"
; dwReserved : DWORD optional -> "sptr"
; nNumberOfBytesToUnlockLow : DWORD -> "sptr"
; nNumberOfBytesToUnlockHigh : DWORD -> "sptr"
; lpOverlapped : OVERLAPPED* in/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 "KERNEL32.dll"
#cfunc global UnlockFileEx "UnlockFileEx" sptr, int, int, int, var
; res = UnlockFileEx(hFile, dwReserved, nNumberOfBytesToUnlockLow, nNumberOfBytesToUnlockHigh, lpOverlapped)
; hFile : HANDLE -> "sptr"
; dwReserved : DWORD optional -> "int"
; nNumberOfBytesToUnlockLow : DWORD -> "int"
; nNumberOfBytesToUnlockHigh : DWORD -> "int"
; lpOverlapped : OVERLAPPED* in/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。

; BOOL UnlockFileEx(HANDLE hFile, DWORD dwReserved, DWORD nNumberOfBytesToUnlockLow, DWORD nNumberOfBytesToUnlockHigh, OVERLAPPED* lpOverlapped)
#uselib "KERNEL32.dll"
#cfunc global UnlockFileEx "UnlockFileEx" intptr, int, int, int, var
; res = UnlockFileEx(hFile, dwReserved, nNumberOfBytesToUnlockLow, nNumberOfBytesToUnlockHigh, lpOverlapped)
; hFile : HANDLE -> "intptr"
; dwReserved : DWORD optional -> "int"
; nNumberOfBytesToUnlockLow : DWORD -> "int"
; nNumberOfBytesToUnlockHigh : DWORD -> "int"
; lpOverlapped : OVERLAPPED* in/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 (
	kernel32 = windows.NewLazySystemDLL("KERNEL32.dll")
	procUnlockFileEx = kernel32.NewProc("UnlockFileEx")
)

// hFile (HANDLE), dwReserved (DWORD optional), nNumberOfBytesToUnlockLow (DWORD), nNumberOfBytesToUnlockHigh (DWORD), lpOverlapped (OVERLAPPED* in/out)
r1, _, err := procUnlockFileEx.Call(
	uintptr(hFile),
	uintptr(dwReserved),
	uintptr(nNumberOfBytesToUnlockLow),
	uintptr(nNumberOfBytesToUnlockHigh),
	uintptr(lpOverlapped),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function UnlockFileEx(
  hFile: THandle;   // HANDLE
  dwReserved: DWORD;   // DWORD optional
  nNumberOfBytesToUnlockLow: DWORD;   // DWORD
  nNumberOfBytesToUnlockHigh: DWORD;   // DWORD
  lpOverlapped: Pointer   // OVERLAPPED* in/out
): BOOL; stdcall;
  external 'KERNEL32.dll' name 'UnlockFileEx';

result := DllCall("KERNEL32\UnlockFileEx"
    , "Ptr", hFile   ; HANDLE
    , "UInt", dwReserved   ; DWORD optional
    , "UInt", nNumberOfBytesToUnlockLow   ; DWORD
    , "UInt", nNumberOfBytesToUnlockHigh   ; DWORD
    , "Ptr", lpOverlapped   ; OVERLAPPED* in/out
    , "Int")   ; return: BOOL

●UnlockFileEx(hFile, dwReserved, nNumberOfBytesToUnlockLow, nNumberOfBytesToUnlockHigh, lpOverlapped) = DLL("KERNEL32.dll", "bool UnlockFileEx(void*, dword, dword, dword, void*)")
# 呼び出し: UnlockFileEx(hFile, dwReserved, nNumberOfBytesToUnlockLow, nNumberOfBytesToUnlockHigh, lpOverlapped)
# hFile : HANDLE -> "void*"
# dwReserved : DWORD optional -> "dword"
# nNumberOfBytesToUnlockLow : DWORD -> "dword"
# nNumberOfBytesToUnlockHigh : DWORD -> "dword"
# lpOverlapped : OVERLAPPED* in/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)。