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GetFileInformationByName
関数ファイル名から指定クラスのファイル情報を取得する。
シグネチャ
// KERNEL32.dll
#include <windows.h>
BOOL GetFileInformationByName(
LPCWSTR FileName,
FILE_INFO_BY_NAME_CLASS FileInformationClass,
void* FileInfoBuffer,
DWORD FileInfoBufferSize
);パラメーター
| 名前 | 型 | 方向 |
|---|---|---|
| FileName | LPCWSTR | in |
| FileInformationClass | FILE_INFO_BY_NAME_CLASS | in |
| FileInfoBuffer | void* | out |
| FileInfoBufferSize | DWORD | in |
戻り値の型: BOOL
各言語での呼び出し定義
// KERNEL32.dll
#include <windows.h>
BOOL GetFileInformationByName(
LPCWSTR FileName,
FILE_INFO_BY_NAME_CLASS FileInformationClass,
void* FileInfoBuffer,
DWORD FileInfoBufferSize
);[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("KERNEL32.dll", ExactSpelling = true)]
static extern bool GetFileInformationByName(
[MarshalAs(UnmanagedType.LPWStr)] string FileName, // LPCWSTR
int FileInformationClass, // FILE_INFO_BY_NAME_CLASS
IntPtr FileInfoBuffer, // void* out
uint FileInfoBufferSize // DWORD
);<DllImport("KERNEL32.dll", ExactSpelling:=True)>
Public Shared Function GetFileInformationByName(
<MarshalAs(UnmanagedType.LPWStr)> FileName As String, ' LPCWSTR
FileInformationClass As Integer, ' FILE_INFO_BY_NAME_CLASS
FileInfoBuffer As IntPtr, ' void* out
FileInfoBufferSize As UInteger ' DWORD
) As Boolean
End Function' FileName : LPCWSTR
' FileInformationClass : FILE_INFO_BY_NAME_CLASS
' FileInfoBuffer : void* out
' FileInfoBufferSize : DWORD
Declare PtrSafe Function GetFileInformationByName Lib "kernel32" ( _
ByVal FileName As LongPtr, _
ByVal FileInformationClass As Long, _
ByVal FileInfoBuffer As LongPtr, _
ByVal FileInfoBufferSize 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
GetFileInformationByName = ctypes.windll.kernel32.GetFileInformationByName
GetFileInformationByName.restype = wintypes.BOOL
GetFileInformationByName.argtypes = [
wintypes.LPCWSTR, # FileName : LPCWSTR
ctypes.c_int, # FileInformationClass : FILE_INFO_BY_NAME_CLASS
ctypes.POINTER(None), # FileInfoBuffer : void* out
wintypes.DWORD, # FileInfoBufferSize : DWORD
]require 'fiddle'
require 'fiddle/import'
lib = Fiddle.dlopen('KERNEL32.dll')
GetFileInformationByName = Fiddle::Function.new(
lib['GetFileInformationByName'],
[
Fiddle::TYPE_VOIDP, # FileName : LPCWSTR
Fiddle::TYPE_INT, # FileInformationClass : FILE_INFO_BY_NAME_CLASS
Fiddle::TYPE_VOIDP, # FileInfoBuffer : void* out
-Fiddle::TYPE_INT, # FileInfoBufferSize : DWORD
],
Fiddle::TYPE_INT)#[link(name = "kernel32")]
extern "system" {
fn GetFileInformationByName(
FileName: *const u16, // LPCWSTR
FileInformationClass: i32, // FILE_INFO_BY_NAME_CLASS
FileInfoBuffer: *mut (), // void* out
FileInfoBufferSize: u32 // DWORD
) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("KERNEL32.dll")]
public static extern bool GetFileInformationByName([MarshalAs(UnmanagedType.LPWStr)] string FileName, int FileInformationClass, IntPtr FileInfoBuffer, uint FileInfoBufferSize);
"@
$api = Add-Type -MemberDefinition $sig -Name 'KERNEL32_GetFileInformationByName' -Namespace Win32 -PassThru
# $api::GetFileInformationByName(FileName, FileInformationClass, FileInfoBuffer, FileInfoBufferSize)#uselib "KERNEL32.dll"
#func global GetFileInformationByName "GetFileInformationByName" sptr, sptr, sptr, sptr
; GetFileInformationByName FileName, FileInformationClass, FileInfoBuffer, FileInfoBufferSize ; 戻り値は stat
; FileName : LPCWSTR -> "sptr"
; FileInformationClass : FILE_INFO_BY_NAME_CLASS -> "sptr"
; FileInfoBuffer : void* out -> "sptr"
; FileInfoBufferSize : DWORD -> "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 GetFileInformationByName "GetFileInformationByName" wstr, int, sptr, int
; res = GetFileInformationByName(FileName, FileInformationClass, FileInfoBuffer, FileInfoBufferSize)
; FileName : LPCWSTR -> "wstr"
; FileInformationClass : FILE_INFO_BY_NAME_CLASS -> "int"
; FileInfoBuffer : void* out -> "sptr"
; FileInfoBufferSize : DWORD -> "int"; BOOL GetFileInformationByName(LPCWSTR FileName, FILE_INFO_BY_NAME_CLASS FileInformationClass, void* FileInfoBuffer, DWORD FileInfoBufferSize)
#uselib "KERNEL32.dll"
#cfunc global GetFileInformationByName "GetFileInformationByName" wstr, int, intptr, int
; res = GetFileInformationByName(FileName, FileInformationClass, FileInfoBuffer, FileInfoBufferSize)
; FileName : LPCWSTR -> "wstr"
; FileInformationClass : FILE_INFO_BY_NAME_CLASS -> "int"
; FileInfoBuffer : void* out -> "intptr"
; FileInfoBufferSize : DWORD -> "int"import (
"golang.org/x/sys/windows"
"unsafe"
)
var (
kernel32 = windows.NewLazySystemDLL("KERNEL32.dll")
procGetFileInformationByName = kernel32.NewProc("GetFileInformationByName")
)
// FileName (LPCWSTR), FileInformationClass (FILE_INFO_BY_NAME_CLASS), FileInfoBuffer (void* out), FileInfoBufferSize (DWORD)
r1, _, err := procGetFileInformationByName.Call(
uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(FileName))),
uintptr(FileInformationClass),
uintptr(FileInfoBuffer),
uintptr(FileInfoBufferSize),
)
_ = err // syscall.Errno (valid when the call sets last-error)
_ = r1 // BOOLfunction GetFileInformationByName(
FileName: PWideChar; // LPCWSTR
FileInformationClass: Integer; // FILE_INFO_BY_NAME_CLASS
FileInfoBuffer: Pointer; // void* out
FileInfoBufferSize: DWORD // DWORD
): BOOL; stdcall;
external 'KERNEL32.dll' name 'GetFileInformationByName';result := DllCall("KERNEL32\GetFileInformationByName"
, "WStr", FileName ; LPCWSTR
, "Int", FileInformationClass ; FILE_INFO_BY_NAME_CLASS
, "Ptr", FileInfoBuffer ; void* out
, "UInt", FileInfoBufferSize ; DWORD
, "Int") ; return: BOOL●GetFileInformationByName(FileName, FileInformationClass, FileInfoBuffer, FileInfoBufferSize) = DLL("KERNEL32.dll", "bool GetFileInformationByName(char*, int, void*, dword)")
# 呼び出し: GetFileInformationByName(FileName, FileInformationClass, FileInfoBuffer, FileInfoBufferSize)
# FileName : LPCWSTR -> "char*"
# FileInformationClass : FILE_INFO_BY_NAME_CLASS -> "int"
# FileInfoBuffer : void* out -> "void*"
# FileInfoBufferSize : DWORD -> "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)。