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CreateFileMappingA

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(ANSI版)。

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

シグネチャ

// KERNEL32.dll  (ANSI / -A)
#include <windows.h>

HANDLE CreateFileMappingA(
    HANDLE hFile,
    SECURITY_ATTRIBUTES* lpFileMappingAttributes,   // optional
    PAGE_PROTECTION_FLAGS flProtect,
    DWORD dwMaximumSizeHigh,
    DWORD dwMaximumSizeLow,
    LPCSTR 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	LPCSTR	inoptional

戻り値の型: HANDLE

各言語での呼び出し定義

// KERNEL32.dll  (ANSI / -A)
#include <windows.h>

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

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

<DllImport("KERNEL32.dll", CharSet:=CharSet.Ansi, SetLastError:=True, ExactSpelling:=True)>
Public Shared Function CreateFileMappingA(
    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.LPStr)> lpName As String   ' LPCSTR optional
) As IntPtr
End Function

' hFile : HANDLE
' lpFileMappingAttributes : SECURITY_ATTRIBUTES* optional
' flProtect : PAGE_PROTECTION_FLAGS
' dwMaximumSizeHigh : DWORD
' dwMaximumSizeLow : DWORD
' lpName : LPCSTR optional
Declare PtrSafe Function CreateFileMappingA 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 String) As LongPtr
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

CreateFileMappingA = ctypes.windll.kernel32.CreateFileMappingA
CreateFileMappingA.restype = ctypes.c_void_p
CreateFileMappingA.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.LPCSTR,  # lpName : LPCSTR optional
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('KERNEL32.dll')
CreateFileMappingA = Fiddle::Function.new(
  lib['CreateFileMappingA'],
  [
    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 : LPCSTR optional
  ],
  Fiddle::TYPE_VOIDP)

#[link(name = "kernel32")]
extern "system" {
    fn CreateFileMappingA(
        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 u8  // LPCSTR optional
    ) -> *mut core::ffi::c_void;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("KERNEL32.dll", CharSet = CharSet.Ansi, SetLastError = true)]
public static extern IntPtr CreateFileMappingA(IntPtr hFile, IntPtr lpFileMappingAttributes, uint flProtect, uint dwMaximumSizeHigh, uint dwMaximumSizeLow, [MarshalAs(UnmanagedType.LPStr)] string lpName);
"@
$api = Add-Type -MemberDefinition $sig -Name 'KERNEL32_CreateFileMappingA' -Namespace Win32 -PassThru
# $api::CreateFileMappingA(hFile, lpFileMappingAttributes, flProtect, dwMaximumSizeHigh, dwMaximumSizeLow, lpName)

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

出力引数:

#uselib "KERNEL32.dll"
#cfunc global CreateFileMappingA "CreateFileMappingA" sptr, var, int, int, int, str
; res = CreateFileMappingA(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 : LPCSTR optional -> "str"
; ※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 CreateFileMappingA "CreateFileMappingA" sptr, sptr, int, int, int, str
; res = CreateFileMappingA(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 : LPCSTR optional -> "str"
; ※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 CreateFileMappingA(HANDLE hFile, SECURITY_ATTRIBUTES* lpFileMappingAttributes, PAGE_PROTECTION_FLAGS flProtect, DWORD dwMaximumSizeHigh, DWORD dwMaximumSizeLow, LPCSTR lpName)
#uselib "KERNEL32.dll"
#cfunc global CreateFileMappingA "CreateFileMappingA" intptr, var, int, int, int, str
; res = CreateFileMappingA(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 : LPCSTR optional -> "str"
; ※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 CreateFileMappingA(HANDLE hFile, SECURITY_ATTRIBUTES* lpFileMappingAttributes, PAGE_PROTECTION_FLAGS flProtect, DWORD dwMaximumSizeHigh, DWORD dwMaximumSizeLow, LPCSTR lpName)
#uselib "KERNEL32.dll"
#cfunc global CreateFileMappingA "CreateFileMappingA" intptr, intptr, int, int, int, str
; res = CreateFileMappingA(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 : LPCSTR optional -> "str"
; ※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")
	procCreateFileMappingA = kernel32.NewProc("CreateFileMappingA")
)

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

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

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

●CreateFileMappingA(hFile, lpFileMappingAttributes, flProtect, dwMaximumSizeHigh, dwMaximumSizeLow, lpName) = DLL("KERNEL32.dll", "void* CreateFileMappingA(void*, void*, dword, dword, dword, char*)")
# 呼び出し: CreateFileMappingA(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 : LPCSTR 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)。