UnmapViewOfFileEx

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

BOOL UnmapViewOfFileEx(
    MEMORY_MAPPED_VIEW_ADDRESS BaseAddress,
    UNMAP_VIEW_OF_FILE_FLAGS UnmapFlags
);

<DllImport("KERNEL32.dll", SetLastError:=True, ExactSpelling:=True)>
Public Shared Function UnmapViewOfFileEx(
    BaseAddress As MEMORY_MAPPED_VIEW_ADDRESS,   ' MEMORY_MAPPED_VIEW_ADDRESS
    UnmapFlags As UInteger   ' UNMAP_VIEW_OF_FILE_FLAGS
) As Boolean
End Function

' BaseAddress : MEMORY_MAPPED_VIEW_ADDRESS
' UnmapFlags : UNMAP_VIEW_OF_FILE_FLAGS
Declare PtrSafe Function UnmapViewOfFileEx Lib "kernel32" ( _
    ByVal BaseAddress As LongPtr, _
    ByVal UnmapFlags 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

UnmapViewOfFileEx = ctypes.windll.kernel32.UnmapViewOfFileEx
UnmapViewOfFileEx.restype = wintypes.BOOL
UnmapViewOfFileEx.argtypes = [
    MEMORY_MAPPED_VIEW_ADDRESS,  # BaseAddress : MEMORY_MAPPED_VIEW_ADDRESS
    wintypes.DWORD,  # UnmapFlags : UNMAP_VIEW_OF_FILE_FLAGS
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('KERNEL32.dll')
UnmapViewOfFileEx = Fiddle::Function.new(
  lib['UnmapViewOfFileEx'],
  [
    Fiddle::TYPE_VOIDP,  # BaseAddress : MEMORY_MAPPED_VIEW_ADDRESS
    -Fiddle::TYPE_INT,  # UnmapFlags : UNMAP_VIEW_OF_FILE_FLAGS
  ],
  Fiddle::TYPE_INT)

#[link(name = "kernel32")]
extern "system" {
    fn UnmapViewOfFileEx(
        BaseAddress: MEMORY_MAPPED_VIEW_ADDRESS,  // MEMORY_MAPPED_VIEW_ADDRESS
        UnmapFlags: u32  // UNMAP_VIEW_OF_FILE_FLAGS
    ) -> 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 UnmapViewOfFileEx(MEMORY_MAPPED_VIEW_ADDRESS BaseAddress, uint UnmapFlags);
"@
$api = Add-Type -MemberDefinition $sig -Name 'KERNEL32_UnmapViewOfFileEx' -Namespace Win32 -PassThru
# $api::UnmapViewOfFileEx(BaseAddress, UnmapFlags)

#uselib "KERNEL32.dll"
#func global UnmapViewOfFileEx "UnmapViewOfFileEx" sptr, sptr
; UnmapViewOfFileEx BaseAddress, UnmapFlags   ; 戻り値は stat
; BaseAddress : MEMORY_MAPPED_VIEW_ADDRESS -> "sptr"
; UnmapFlags : UNMAP_VIEW_OF_FILE_FLAGS -> "sptr"
; ※値渡し構造体は直接渡せません。intにパック、または var で構造体変数を渡してください。
; ※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 UnmapViewOfFileEx "UnmapViewOfFileEx" int, int
; res = UnmapViewOfFileEx(BaseAddress, UnmapFlags)
; BaseAddress : MEMORY_MAPPED_VIEW_ADDRESS -> "int"
; UnmapFlags : UNMAP_VIEW_OF_FILE_FLAGS -> "int"
; ※値渡し構造体は直接渡せません。intにパック、または var で構造体変数を渡してください。

; BOOL UnmapViewOfFileEx(MEMORY_MAPPED_VIEW_ADDRESS BaseAddress, UNMAP_VIEW_OF_FILE_FLAGS UnmapFlags)
#uselib "KERNEL32.dll"
#cfunc global UnmapViewOfFileEx "UnmapViewOfFileEx" int, int
; res = UnmapViewOfFileEx(BaseAddress, UnmapFlags)
; BaseAddress : MEMORY_MAPPED_VIEW_ADDRESS -> "int"
; UnmapFlags : UNMAP_VIEW_OF_FILE_FLAGS -> "int"
; ※値渡し構造体は直接渡せません。intにパック、または var で構造体変数を渡してください。

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

var (
	kernel32 = windows.NewLazySystemDLL("KERNEL32.dll")
	procUnmapViewOfFileEx = kernel32.NewProc("UnmapViewOfFileEx")
)

// BaseAddress (MEMORY_MAPPED_VIEW_ADDRESS), UnmapFlags (UNMAP_VIEW_OF_FILE_FLAGS)
r1, _, err := procUnmapViewOfFileEx.Call(
	uintptr(BaseAddress),
	uintptr(UnmapFlags),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function UnmapViewOfFileEx(
  BaseAddress: MEMORY_MAPPED_VIEW_ADDRESS;   // MEMORY_MAPPED_VIEW_ADDRESS
  UnmapFlags: DWORD   // UNMAP_VIEW_OF_FILE_FLAGS
): BOOL; stdcall;
  external 'KERNEL32.dll' name 'UnmapViewOfFileEx';

result := DllCall("KERNEL32\UnmapViewOfFileEx"
    , "Ptr", BaseAddress   ; MEMORY_MAPPED_VIEW_ADDRESS
    , "UInt", UnmapFlags   ; UNMAP_VIEW_OF_FILE_FLAGS
    , "Int")   ; return: BOOL

●UnmapViewOfFileEx(BaseAddress, UnmapFlags) = DLL("KERNEL32.dll", "bool UnmapViewOfFileEx(void*, dword)")
# 呼び出し: UnmapViewOfFileEx(BaseAddress, UnmapFlags)
# BaseAddress : MEMORY_MAPPED_VIEW_ADDRESS -> "void*"
# UnmapFlags : UNMAP_VIEW_OF_FILE_FLAGS -> "dword"
# 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)。