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CreateFileMappingW

関数

ファイルマッピングオブジェクトを作成または開く(Unicode版)。

DLLKERNEL32.dll文字セットUnicode (-W)呼出規約winapiSetLastErrorあり対応OSWindows XP 以降

シグネチャ

// KERNEL32.dll  (Unicode / -W)
#include <windows.h>

HANDLE CreateFileMappingW(
    HANDLE hFile,
    SECURITY_ATTRIBUTES* lpFileMappingAttributes,   // optional
    PAGE_PROTECTION_FLAGS flProtect,
    DWORD dwMaximumSizeHigh,
    DWORD dwMaximumSizeLow,
    LPCWSTR lpName   // optional
);

パラメーター

名前	型	方向
hFile	HANDLE	in
lpFileMappingAttributes	SECURITY_ATTRIBUTES*	inoptional
flProtect	PAGE_PROTECTION_FLAGS	in
dwMaximumSizeHigh	DWORD	in
dwMaximumSizeLow	DWORD	in
lpName	LPCWSTR	inoptional

戻り値の型: HANDLE

各言語での呼び出し定義

// KERNEL32.dll  (Unicode / -W)
#include <windows.h>

HANDLE CreateFileMappingW(
    HANDLE hFile,
    SECURITY_ATTRIBUTES* lpFileMappingAttributes,   // optional
    PAGE_PROTECTION_FLAGS flProtect,
    DWORD dwMaximumSizeHigh,
    DWORD dwMaximumSizeLow,
    LPCWSTR lpName   // optional
);

[DllImport("KERNEL32.dll", CharSet = CharSet.Unicode, SetLastError = true, ExactSpelling = true)]
static extern IntPtr CreateFileMappingW(
    IntPtr hFile,   // HANDLE
    IntPtr lpFileMappingAttributes,   // SECURITY_ATTRIBUTES* optional
    uint flProtect,   // PAGE_PROTECTION_FLAGS
    uint dwMaximumSizeHigh,   // DWORD
    uint dwMaximumSizeLow,   // DWORD
    [MarshalAs(UnmanagedType.LPWStr)] string lpName   // LPCWSTR optional
);

<DllImport("KERNEL32.dll", CharSet:=CharSet.Unicode, SetLastError:=True, ExactSpelling:=True)>
Public Shared Function CreateFileMappingW(
    hFile As IntPtr,   ' HANDLE
    lpFileMappingAttributes As IntPtr,   ' SECURITY_ATTRIBUTES* optional
    flProtect As UInteger,   ' PAGE_PROTECTION_FLAGS
    dwMaximumSizeHigh As UInteger,   ' DWORD
    dwMaximumSizeLow As UInteger,   ' DWORD
    <MarshalAs(UnmanagedType.LPWStr)> lpName As String   ' LPCWSTR optional
) As IntPtr
End Function

' hFile : HANDLE
' lpFileMappingAttributes : SECURITY_ATTRIBUTES* optional
' flProtect : PAGE_PROTECTION_FLAGS
' dwMaximumSizeHigh : DWORD
' dwMaximumSizeLow : DWORD
' lpName : LPCWSTR optional
Declare PtrSafe Function CreateFileMappingW Lib "kernel32" ( _
    ByVal hFile As LongPtr, _
    ByVal lpFileMappingAttributes As LongPtr, _
    ByVal flProtect As Long, _
    ByVal dwMaximumSizeHigh As Long, _
    ByVal dwMaximumSizeLow As Long, _
    ByVal lpName As LongPtr) As LongPtr
' Unicode(W): 文字列は ByVal As LongPtr とし StrPtr(unicodeStr) を渡す
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

CreateFileMappingW = ctypes.windll.kernel32.CreateFileMappingW
CreateFileMappingW.restype = ctypes.c_void_p
CreateFileMappingW.argtypes = [
    wintypes.HANDLE,  # hFile : HANDLE
    ctypes.c_void_p,  # lpFileMappingAttributes : SECURITY_ATTRIBUTES* optional
    wintypes.DWORD,  # flProtect : PAGE_PROTECTION_FLAGS
    wintypes.DWORD,  # dwMaximumSizeHigh : DWORD
    wintypes.DWORD,  # dwMaximumSizeLow : DWORD
    wintypes.LPCWSTR,  # lpName : LPCWSTR optional
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('KERNEL32.dll')
CreateFileMappingW = Fiddle::Function.new(
  lib['CreateFileMappingW'],
  [
    Fiddle::TYPE_VOIDP,  # hFile : HANDLE
    Fiddle::TYPE_VOIDP,  # lpFileMappingAttributes : SECURITY_ATTRIBUTES* optional
    -Fiddle::TYPE_INT,  # flProtect : PAGE_PROTECTION_FLAGS
    -Fiddle::TYPE_INT,  # dwMaximumSizeHigh : DWORD
    -Fiddle::TYPE_INT,  # dwMaximumSizeLow : DWORD
    Fiddle::TYPE_VOIDP,  # lpName : LPCWSTR optional
  ],
  Fiddle::TYPE_VOIDP)
# Wide strings: pass str.encode("UTF-16LE") + "\x00\x00"

#[link(name = "kernel32")]
extern "system" {
    fn CreateFileMappingW(
        hFile: *mut core::ffi::c_void,  // HANDLE
        lpFileMappingAttributes: *mut SECURITY_ATTRIBUTES,  // SECURITY_ATTRIBUTES* optional
        flProtect: u32,  // PAGE_PROTECTION_FLAGS
        dwMaximumSizeHigh: u32,  // DWORD
        dwMaximumSizeLow: u32,  // DWORD
        lpName: *const u16  // LPCWSTR optional
    ) -> *mut core::ffi::c_void;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("KERNEL32.dll", CharSet = CharSet.Unicode, SetLastError = true)]
public static extern IntPtr CreateFileMappingW(IntPtr hFile, IntPtr lpFileMappingAttributes, uint flProtect, uint dwMaximumSizeHigh, uint dwMaximumSizeLow, [MarshalAs(UnmanagedType.LPWStr)] string lpName);
"@
$api = Add-Type -MemberDefinition $sig -Name 'KERNEL32_CreateFileMappingW' -Namespace Win32 -PassThru
# $api::CreateFileMappingW(hFile, lpFileMappingAttributes, flProtect, dwMaximumSizeHigh, dwMaximumSizeLow, lpName)

#uselib "KERNEL32.dll"
#func global CreateFileMappingW "CreateFileMappingW" wptr, wptr, wptr, wptr, wptr, wptr
; CreateFileMappingW hFile, varptr(lpFileMappingAttributes), flProtect, dwMaximumSizeHigh, dwMaximumSizeLow, lpName   ; 戻り値は stat
; hFile : HANDLE -> "wptr"
; lpFileMappingAttributes : SECURITY_ATTRIBUTES* optional -> "wptr"
; flProtect : PAGE_PROTECTION_FLAGS -> "wptr"
; dwMaximumSizeHigh : DWORD -> "wptr"
; dwMaximumSizeLow : DWORD -> "wptr"
; lpName : LPCWSTR optional -> "wptr"
; ※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。

出力引数:

#uselib "KERNEL32.dll"
#cfunc global CreateFileMappingW "CreateFileMappingW" sptr, var, int, int, int, wstr
; res = CreateFileMappingW(hFile, lpFileMappingAttributes, flProtect, dwMaximumSizeHigh, dwMaximumSizeLow, lpName)
; hFile : HANDLE -> "sptr"
; lpFileMappingAttributes : SECURITY_ATTRIBUTES* optional -> "var"
; flProtect : PAGE_PROTECTION_FLAGS -> "int"
; dwMaximumSizeHigh : DWORD -> "int"
; dwMaximumSizeLow : DWORD -> "int"
; lpName : LPCWSTR optional -> "wstr"
; ※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。#uselib "KERNEL32.dll"
#cfunc global CreateFileMappingW "CreateFileMappingW" sptr, sptr, int, int, int, wstr
; res = CreateFileMappingW(hFile, varptr(lpFileMappingAttributes), flProtect, dwMaximumSizeHigh, dwMaximumSizeLow, lpName)
; hFile : HANDLE -> "sptr"
; lpFileMappingAttributes : SECURITY_ATTRIBUTES* optional -> "sptr"
; flProtect : PAGE_PROTECTION_FLAGS -> "int"
; dwMaximumSizeHigh : DWORD -> "int"
; dwMaximumSizeLow : DWORD -> "int"
; lpName : LPCWSTR optional -> "wstr"
; ※出力/バッファ引数はポインタ方式(token=sptr / 呼び出しは varptr(変数))。

出力引数:

; HANDLE CreateFileMappingW(HANDLE hFile, SECURITY_ATTRIBUTES* lpFileMappingAttributes, PAGE_PROTECTION_FLAGS flProtect, DWORD dwMaximumSizeHigh, DWORD dwMaximumSizeLow, LPCWSTR lpName)
#uselib "KERNEL32.dll"
#cfunc global CreateFileMappingW "CreateFileMappingW" intptr, var, int, int, int, wstr
; res = CreateFileMappingW(hFile, lpFileMappingAttributes, flProtect, dwMaximumSizeHigh, dwMaximumSizeLow, lpName)
; hFile : HANDLE -> "intptr"
; lpFileMappingAttributes : SECURITY_ATTRIBUTES* optional -> "var"
; flProtect : PAGE_PROTECTION_FLAGS -> "int"
; dwMaximumSizeHigh : DWORD -> "int"
; dwMaximumSizeLow : DWORD -> "int"
; lpName : LPCWSTR optional -> "wstr"
; ※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。; HANDLE CreateFileMappingW(HANDLE hFile, SECURITY_ATTRIBUTES* lpFileMappingAttributes, PAGE_PROTECTION_FLAGS flProtect, DWORD dwMaximumSizeHigh, DWORD dwMaximumSizeLow, LPCWSTR lpName)
#uselib "KERNEL32.dll"
#cfunc global CreateFileMappingW "CreateFileMappingW" intptr, intptr, int, int, int, wstr
; res = CreateFileMappingW(hFile, varptr(lpFileMappingAttributes), flProtect, dwMaximumSizeHigh, dwMaximumSizeLow, lpName)
; hFile : HANDLE -> "intptr"
; lpFileMappingAttributes : SECURITY_ATTRIBUTES* optional -> "intptr"
; flProtect : PAGE_PROTECTION_FLAGS -> "int"
; dwMaximumSizeHigh : DWORD -> "int"
; dwMaximumSizeLow : DWORD -> "int"
; lpName : LPCWSTR optional -> "wstr"
; ※出力/バッファ引数はポインタ方式(token=intptr / 呼び出しは varptr(変数))。

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

var (
	kernel32 = windows.NewLazySystemDLL("KERNEL32.dll")
	procCreateFileMappingW = kernel32.NewProc("CreateFileMappingW")
)

// hFile (HANDLE), lpFileMappingAttributes (SECURITY_ATTRIBUTES* optional), flProtect (PAGE_PROTECTION_FLAGS), dwMaximumSizeHigh (DWORD), dwMaximumSizeLow (DWORD), lpName (LPCWSTR optional)
r1, _, err := procCreateFileMappingW.Call(
	uintptr(hFile),
	uintptr(lpFileMappingAttributes),
	uintptr(flProtect),
	uintptr(dwMaximumSizeHigh),
	uintptr(dwMaximumSizeLow),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(lpName))),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HANDLE

function CreateFileMappingW(
  hFile: THandle;   // HANDLE
  lpFileMappingAttributes: Pointer;   // SECURITY_ATTRIBUTES* optional
  flProtect: DWORD;   // PAGE_PROTECTION_FLAGS
  dwMaximumSizeHigh: DWORD;   // DWORD
  dwMaximumSizeLow: DWORD;   // DWORD
  lpName: PWideChar   // LPCWSTR optional
): THandle; stdcall;
  external 'KERNEL32.dll' name 'CreateFileMappingW';

result := DllCall("KERNEL32\CreateFileMappingW"
    , "Ptr", hFile   ; HANDLE
    , "Ptr", lpFileMappingAttributes   ; SECURITY_ATTRIBUTES* optional
    , "UInt", flProtect   ; PAGE_PROTECTION_FLAGS
    , "UInt", dwMaximumSizeHigh   ; DWORD
    , "UInt", dwMaximumSizeLow   ; DWORD
    , "WStr", lpName   ; LPCWSTR optional
    , "Ptr")   ; return: HANDLE

●CreateFileMappingW(hFile, lpFileMappingAttributes, flProtect, dwMaximumSizeHigh, dwMaximumSizeLow, lpName) = DLL("KERNEL32.dll", "void* CreateFileMappingW(void*, void*, dword, dword, dword, char*)")
# 呼び出し: CreateFileMappingW(hFile, lpFileMappingAttributes, flProtect, dwMaximumSizeHigh, dwMaximumSizeLow, lpName)
# hFile : HANDLE -> "void*"
# lpFileMappingAttributes : SECURITY_ATTRIBUTES* optional -> "void*"
# flProtect : PAGE_PROTECTION_FLAGS -> "dword"
# dwMaximumSizeHigh : DWORD -> "dword"
# dwMaximumSizeLow : DWORD -> "dword"
# lpName : LPCWSTR optional -> "char*"
# 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)。
# ※-W(Unicode)関数。なでしこ1はANSIのため -A 版の利用を推奨。