MapViewOfFile

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

MEMORY_MAPPED_VIEW_ADDRESS MapViewOfFile(
    HANDLE hFileMappingObject,
    FILE_MAP dwDesiredAccess,
    DWORD dwFileOffsetHigh,
    DWORD dwFileOffsetLow,
    UINT_PTR dwNumberOfBytesToMap
);

<DllImport("KERNEL32.dll", SetLastError:=True, ExactSpelling:=True)>
Public Shared Function MapViewOfFile(
    hFileMappingObject As IntPtr,   ' HANDLE
    dwDesiredAccess As UInteger,   ' FILE_MAP
    dwFileOffsetHigh As UInteger,   ' DWORD
    dwFileOffsetLow As UInteger,   ' DWORD
    dwNumberOfBytesToMap As UIntPtr   ' UINT_PTR
) As MEMORY_MAPPED_VIEW_ADDRESS
End Function

' hFileMappingObject : HANDLE
' dwDesiredAccess : FILE_MAP
' dwFileOffsetHigh : DWORD
' dwFileOffsetLow : DWORD
' dwNumberOfBytesToMap : UINT_PTR
Declare PtrSafe Function MapViewOfFile Lib "kernel32" ( _
    ByVal hFileMappingObject As LongPtr, _
    ByVal dwDesiredAccess As Long, _
    ByVal dwFileOffsetHigh As Long, _
    ByVal dwFileOffsetLow As Long, _
    ByVal dwNumberOfBytesToMap 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

MapViewOfFile = ctypes.windll.kernel32.MapViewOfFile
MapViewOfFile.restype = ctypes.c_void_p
MapViewOfFile.argtypes = [
    wintypes.HANDLE,  # hFileMappingObject : HANDLE
    wintypes.DWORD,  # dwDesiredAccess : FILE_MAP
    wintypes.DWORD,  # dwFileOffsetHigh : DWORD
    wintypes.DWORD,  # dwFileOffsetLow : DWORD
    ctypes.c_size_t,  # dwNumberOfBytesToMap : UINT_PTR
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('KERNEL32.dll')
MapViewOfFile = Fiddle::Function.new(
  lib['MapViewOfFile'],
  [
    Fiddle::TYPE_VOIDP,  # hFileMappingObject : HANDLE
    -Fiddle::TYPE_INT,  # dwDesiredAccess : FILE_MAP
    -Fiddle::TYPE_INT,  # dwFileOffsetHigh : DWORD
    -Fiddle::TYPE_INT,  # dwFileOffsetLow : DWORD
    Fiddle::TYPE_UINTPTR_T,  # dwNumberOfBytesToMap : UINT_PTR
  ],
  Fiddle::TYPE_VOIDP)

#[link(name = "kernel32")]
extern "system" {
    fn MapViewOfFile(
        hFileMappingObject: *mut core::ffi::c_void,  // HANDLE
        dwDesiredAccess: u32,  // FILE_MAP
        dwFileOffsetHigh: u32,  // DWORD
        dwFileOffsetLow: u32,  // DWORD
        dwNumberOfBytesToMap: usize  // UINT_PTR
    ) -> MEMORY_MAPPED_VIEW_ADDRESS;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("KERNEL32.dll", SetLastError = true)]
public static extern MEMORY_MAPPED_VIEW_ADDRESS MapViewOfFile(IntPtr hFileMappingObject, uint dwDesiredAccess, uint dwFileOffsetHigh, uint dwFileOffsetLow, UIntPtr dwNumberOfBytesToMap);
"@
$api = Add-Type -MemberDefinition $sig -Name 'KERNEL32_MapViewOfFile' -Namespace Win32 -PassThru
# $api::MapViewOfFile(hFileMappingObject, dwDesiredAccess, dwFileOffsetHigh, dwFileOffsetLow, dwNumberOfBytesToMap)

#uselib "KERNEL32.dll"
#func global MapViewOfFile "MapViewOfFile" sptr, sptr, sptr, sptr, sptr
; MapViewOfFile hFileMappingObject, dwDesiredAccess, dwFileOffsetHigh, dwFileOffsetLow, dwNumberOfBytesToMap   ; 戻り値は stat
; hFileMappingObject : HANDLE -> "sptr"
; dwDesiredAccess : FILE_MAP -> "sptr"
; dwFileOffsetHigh : DWORD -> "sptr"
; dwFileOffsetLow : DWORD -> "sptr"
; dwNumberOfBytesToMap : UINT_PTR -> "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 MapViewOfFile "MapViewOfFile" sptr, int, int, int, sptr
; res = MapViewOfFile(hFileMappingObject, dwDesiredAccess, dwFileOffsetHigh, dwFileOffsetLow, dwNumberOfBytesToMap)
; hFileMappingObject : HANDLE -> "sptr"
; dwDesiredAccess : FILE_MAP -> "int"
; dwFileOffsetHigh : DWORD -> "int"
; dwFileOffsetLow : DWORD -> "int"
; dwNumberOfBytesToMap : UINT_PTR -> "sptr"

; MEMORY_MAPPED_VIEW_ADDRESS MapViewOfFile(HANDLE hFileMappingObject, FILE_MAP dwDesiredAccess, DWORD dwFileOffsetHigh, DWORD dwFileOffsetLow, UINT_PTR dwNumberOfBytesToMap)
#uselib "KERNEL32.dll"
#cfunc global MapViewOfFile "MapViewOfFile" intptr, int, int, int, intptr
; res = MapViewOfFile(hFileMappingObject, dwDesiredAccess, dwFileOffsetHigh, dwFileOffsetLow, dwNumberOfBytesToMap)
; hFileMappingObject : HANDLE -> "intptr"
; dwDesiredAccess : FILE_MAP -> "int"
; dwFileOffsetHigh : DWORD -> "int"
; dwFileOffsetLow : DWORD -> "int"
; dwNumberOfBytesToMap : UINT_PTR -> "intptr"

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

var (
	kernel32 = windows.NewLazySystemDLL("KERNEL32.dll")
	procMapViewOfFile = kernel32.NewProc("MapViewOfFile")
)

// hFileMappingObject (HANDLE), dwDesiredAccess (FILE_MAP), dwFileOffsetHigh (DWORD), dwFileOffsetLow (DWORD), dwNumberOfBytesToMap (UINT_PTR)
r1, _, err := procMapViewOfFile.Call(
	uintptr(hFileMappingObject),
	uintptr(dwDesiredAccess),
	uintptr(dwFileOffsetHigh),
	uintptr(dwFileOffsetLow),
	uintptr(dwNumberOfBytesToMap),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // MEMORY_MAPPED_VIEW_ADDRESS

function MapViewOfFile(
  hFileMappingObject: THandle;   // HANDLE
  dwDesiredAccess: DWORD;   // FILE_MAP
  dwFileOffsetHigh: DWORD;   // DWORD
  dwFileOffsetLow: DWORD;   // DWORD
  dwNumberOfBytesToMap: NativeUInt   // UINT_PTR
): MEMORY_MAPPED_VIEW_ADDRESS; stdcall;
  external 'KERNEL32.dll' name 'MapViewOfFile';

result := DllCall("KERNEL32\MapViewOfFile"
    , "Ptr", hFileMappingObject   ; HANDLE
    , "UInt", dwDesiredAccess   ; FILE_MAP
    , "UInt", dwFileOffsetHigh   ; DWORD
    , "UInt", dwFileOffsetLow   ; DWORD
    , "UPtr", dwNumberOfBytesToMap   ; UINT_PTR
    , "Ptr")   ; return: MEMORY_MAPPED_VIEW_ADDRESS

●MapViewOfFile(hFileMappingObject, dwDesiredAccess, dwFileOffsetHigh, dwFileOffsetLow, dwNumberOfBytesToMap) = DLL("KERNEL32.dll", "void* MapViewOfFile(void*, dword, dword, dword, int)")
# 呼び出し: MapViewOfFile(hFileMappingObject, dwDesiredAccess, dwFileOffsetHigh, dwFileOffsetLow, dwNumberOfBytesToMap)
# hFileMappingObject : HANDLE -> "void*"
# dwDesiredAccess : FILE_MAP -> "dword"
# dwFileOffsetHigh : DWORD -> "dword"
# dwFileOffsetLow : DWORD -> "dword"
# dwNumberOfBytesToMap : UINT_PTR -> "int"
# 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)。