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NeedCurrentDirectoryForExePathA

関数
実行ファイル検索でカレントディレクトリが必要かを判定する(ANSI版)。
DLLKERNEL32.dll文字セットANSI (-A)呼出規約winapi対応OSWindows Vista 以降

シグネチャ

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

BOOL NeedCurrentDirectoryForExePathA(
    LPCSTR ExeName
);

パラメーター

名前方向説明
ExeNameLPCSTRin判定対象の実行ファイル名を指すANSI文字列。

戻り値の型: BOOL

各言語での呼び出し定義

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

BOOL NeedCurrentDirectoryForExePathA(
    LPCSTR ExeName
);
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("KERNEL32.dll", CharSet = CharSet.Ansi, ExactSpelling = true)]
static extern bool NeedCurrentDirectoryForExePathA(
    [MarshalAs(UnmanagedType.LPStr)] string ExeName   // LPCSTR
);
<DllImport("KERNEL32.dll", CharSet:=CharSet.Ansi, ExactSpelling:=True)>
Public Shared Function NeedCurrentDirectoryForExePathA(
    <MarshalAs(UnmanagedType.LPStr)> ExeName As String   ' LPCSTR
) As <MarshalAs(UnmanagedType.Bool)> Boolean
End Function
' ExeName : LPCSTR
Declare PtrSafe Function NeedCurrentDirectoryForExePathA Lib "kernel32" ( _
    ByVal ExeName As String) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。
import ctypes
from ctypes import wintypes

NeedCurrentDirectoryForExePathA = ctypes.windll.kernel32.NeedCurrentDirectoryForExePathA
NeedCurrentDirectoryForExePathA.restype = wintypes.BOOL
NeedCurrentDirectoryForExePathA.argtypes = [
    wintypes.LPCSTR,  # ExeName : LPCSTR
]
require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('KERNEL32.dll')
NeedCurrentDirectoryForExePathA = Fiddle::Function.new(
  lib['NeedCurrentDirectoryForExePathA'],
  [
    Fiddle::TYPE_VOIDP,  # ExeName : LPCSTR
  ],
  Fiddle::TYPE_INT)
#[link(name = "kernel32")]
extern "system" {
    fn NeedCurrentDirectoryForExePathA(
        ExeName: *const u8  // LPCSTR
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.
$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("KERNEL32.dll", CharSet = CharSet.Ansi)]
public static extern bool NeedCurrentDirectoryForExePathA([MarshalAs(UnmanagedType.LPStr)] string ExeName);
"@
$api = Add-Type -MemberDefinition $sig -Name 'KERNEL32_NeedCurrentDirectoryForExePathA' -Namespace Win32 -PassThru
# $api::NeedCurrentDirectoryForExePathA(ExeName)
#uselib "KERNEL32.dll"
#func global NeedCurrentDirectoryForExePathA "NeedCurrentDirectoryForExePathA" sptr
; NeedCurrentDirectoryForExePathA ExeName   ; 戻り値は stat
; ExeName : LPCSTR -> "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 NeedCurrentDirectoryForExePathA "NeedCurrentDirectoryForExePathA" str
; res = NeedCurrentDirectoryForExePathA(ExeName)
; ExeName : LPCSTR -> "str"
; BOOL NeedCurrentDirectoryForExePathA(LPCSTR ExeName)
#uselib "KERNEL32.dll"
#cfunc global NeedCurrentDirectoryForExePathA "NeedCurrentDirectoryForExePathA" str
; res = NeedCurrentDirectoryForExePathA(ExeName)
; ExeName : LPCSTR -> "str"
import (
	"golang.org/x/sys/windows"
	"unsafe"
)

var (
	kernel32 = windows.NewLazySystemDLL("KERNEL32.dll")
	procNeedCurrentDirectoryForExePathA = kernel32.NewProc("NeedCurrentDirectoryForExePathA")
)

// ExeName (LPCSTR)
r1, _, err := procNeedCurrentDirectoryForExePathA.Call(
	uintptr(unsafe.Pointer(windows.BytePtrFromString(ExeName))),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL
function NeedCurrentDirectoryForExePathA(
  ExeName: PAnsiChar   // LPCSTR
): BOOL; stdcall;
  external 'KERNEL32.dll' name 'NeedCurrentDirectoryForExePathA';
result := DllCall("KERNEL32\NeedCurrentDirectoryForExePathA"
    , "AStr", ExeName   ; LPCSTR
    , "Int")   ; return: BOOL
●NeedCurrentDirectoryForExePathA(ExeName) = DLL("KERNEL32.dll", "bool NeedCurrentDirectoryForExePathA(char*)")
# 呼び出し: NeedCurrentDirectoryForExePathA(ExeName)
# ExeName : LPCSTR -> "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)。
const std = @import("std");

extern "kernel32" fn NeedCurrentDirectoryForExePathA(
    ExeName: [*c]const u8 // LPCSTR
) callconv(std.os.windows.WINAPI) i32;
proc NeedCurrentDirectoryForExePathA(
    ExeName: cstring  # LPCSTR
): int32 {.importc: "NeedCurrentDirectoryForExePathA", stdcall, dynlib: "KERNEL32.dll".}
pragma(lib, "kernel32");
extern(Windows)
int NeedCurrentDirectoryForExePathA(
    const(char)* ExeName   // LPCSTR
);
ccall((:NeedCurrentDirectoryForExePathA, "KERNEL32.dll"), stdcall, Int32,
      (Cstring,),
      ExeName)
# ExeName : LPCSTR -> Cstring
# stdcall は 32bit のみ意味を持つ(x64 では無視)。
local ffi = require("ffi")
ffi.cdef[[
int32_t NeedCurrentDirectoryForExePathA(
    const char* ExeName);
]]
local kernel32 = ffi.load("kernel32")
-- kernel32.NeedCurrentDirectoryForExePathA(ExeName)
-- ExeName : LPCSTR
-- 構造体/GUIDへのポインタは cdef が通るよう void* で表記(実型は各引数コメント参照)。値渡し構造体・enum は対応する typedef を cdef に追加すること。
const koffi = require('koffi');
const lib = koffi.load('KERNEL32.dll');
const NeedCurrentDirectoryForExePathA = lib.func('__stdcall', 'NeedCurrentDirectoryForExePathA', 'int32_t', ['str']);
// NeedCurrentDirectoryForExePathA(ExeName)
// ExeName : LPCSTR -> 'str'
// 出力ポインタは koffi.out(...) で包む。構造体は koffi.struct で定義。
const lib = Deno.dlopen("KERNEL32.dll", {
  NeedCurrentDirectoryForExePathA: { parameters: ["buffer"], result: "i32" },
});
// lib.symbols.NeedCurrentDirectoryForExePathA(ExeName)
// ExeName : LPCSTR -> "buffer"
// 文字列は "buffer"。ANSI(-A) は new TextEncoder() で UTF-8/ANSI バイト列(末尾に \x00)を渡す。
// 値渡し構造体は { struct: [ ...field types... ] } を使用。
<?php
$ffi = FFI::cdef(<<<C
int32_t NeedCurrentDirectoryForExePathA(
    const char* ExeName);
C, "KERNEL32.dll");
// $ffi->NeedCurrentDirectoryForExePathA(ExeName);
// ExeName : LPCSTR
// 構造体/GUIDへのポインタは cdef が通るよう void* で表記(実型は各引数コメント参照)。値渡し構造体・enum は対応する typedef を cdef に追加すること。
// WINAPI(stdcall): x64 では呼出規約が統一されるため問題なし。x86 では __stdcall 対応のラッパが必要な場合あり。
import com.sun.jna.*;
import com.sun.jna.ptr.*;
import com.sun.jna.win32.StdCallLibrary;
import com.sun.jna.win32.W32APIOptions;

public interface Kernel32 extends StdCallLibrary {
    Kernel32 INSTANCE = Native.load("kernel32", Kernel32.class, W32APIOptions.ASCII_OPTIONS);
    boolean NeedCurrentDirectoryForExePathA(
        String ExeName   // LPCSTR
    );
}
@[Link("kernel32")]
lib LibKERNEL32
  fun NeedCurrentDirectoryForExePathA = NeedCurrentDirectoryForExePathA(
    ExeName : UInt8*   # LPCSTR
  ) : Int32
end
# 構造体/GUID/enum は lib 内に対応する型定義が必要。
# 呼出規約: x64 は規約統一のため OK。x86(32bit)は WINAPI=stdcall だが Crystal の fun に stdcall 付与構文がなく非対応。
import 'dart:ffi';
import 'package:ffi/ffi.dart';

typedef NeedCurrentDirectoryForExePathANative = Int32 Function(Pointer<Utf8>);
typedef NeedCurrentDirectoryForExePathADart = int Function(Pointer<Utf8>);
final NeedCurrentDirectoryForExePathA = DynamicLibrary.open('KERNEL32.dll')
    .lookupFunction<NeedCurrentDirectoryForExePathANative, NeedCurrentDirectoryForExePathADart>('NeedCurrentDirectoryForExePathA');
// ExeName : LPCSTR -> Pointer<Utf8>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。
{$mode objfpc}{$H+}
function NeedCurrentDirectoryForExePathA(
  ExeName: PAnsiChar   // LPCSTR
): BOOL; stdcall;
  external 'KERNEL32.dll' name 'NeedCurrentDirectoryForExePathA';
import Foreign
import Foreign.C.Types
import Foreign.C.String

foreign import stdcall safe "NeedCurrentDirectoryForExePathA"
  c_NeedCurrentDirectoryForExePathA :: CString -> IO CInt
-- ExeName : LPCSTR -> CString
-- 要 GHC(Windows)。stdcall は x64 では ccall として扱われる。ブロックする API は safe 呼び出し推奨。
open Ctypes
open Foreign

let needcurrentdirectoryforexepatha =
  foreign "NeedCurrentDirectoryForExePathA"
    (string @-> returning int32_t)
(* ExeName : LPCSTR -> string *)
(* foreign は cdecl 前提。x64 Windows では WINAPI と一致。構造体は ctypes structure を定義のこと。 *)
(cffi:define-foreign-library kernel32 (t "KERNEL32.dll"))
(cffi:use-foreign-library kernel32)

(cffi:defcfun ("NeedCurrentDirectoryForExePathA" need-current-directory-for-exe-path-a :convention :stdcall) :int32
  (exe-name :string))   ; LPCSTR
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。
use Win32::API;
my $NeedCurrentDirectoryForExePathA = Win32::API::More->new('KERNEL32',
    'BOOL NeedCurrentDirectoryForExePathA(LPCSTR ExeName)');
# my $ret = $NeedCurrentDirectoryForExePathA->Call($ExeName);
# ExeName : LPCSTR -> LPCSTR
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。

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