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JetEnableMultiInstanceA

関数
ESEのマルチインスタンス動作を有効化しパラメーターを設定する（ANSI版）。
DLLESENT.dll文字セットANSI (-A)呼出規約winapi
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シグネチャ

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

INT JetEnableMultiInstanceA(
    JET_SETSYSPARAM_A* psetsysparam,   // optional
    DWORD csetsysparam,
    DWORD* pcsetsucceed   // optional
);

パラメーター

名前型方向説明
psetsysparamJET_SETSYSPARAM_A*inoptionalマルチインスタンス有効化時に設定するシステムパラメータ配列(JET_SETSYSPARAM_A)へのポインタ。
csetsysparamDWORDinpsetsysparam配列の要素数。
pcsetsucceedDWORD*outoptional正常に設定できたパラメータ数を受け取るDWORDポインタ。

戻り値の型: INT

各言語での呼び出し定義

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

INT JetEnableMultiInstanceA(
    JET_SETSYSPARAM_A* psetsysparam,   // optional
    DWORD csetsysparam,
    DWORD* pcsetsucceed   // optional
);
[DllImport("ESENT.dll", CharSet = CharSet.Ansi, ExactSpelling = true)]
static extern int JetEnableMultiInstanceA(
    IntPtr psetsysparam,   // JET_SETSYSPARAM_A* optional
    uint csetsysparam,   // DWORD
    IntPtr pcsetsucceed   // DWORD* optional, out
);
<DllImport("ESENT.dll", CharSet:=CharSet.Ansi, ExactSpelling:=True)>
Public Shared Function JetEnableMultiInstanceA(
    psetsysparam As IntPtr,   ' JET_SETSYSPARAM_A* optional
    csetsysparam As UInteger,   ' DWORD
    pcsetsucceed As IntPtr   ' DWORD* optional, out
) As Integer
End Function
' psetsysparam : JET_SETSYSPARAM_A* optional
' csetsysparam : DWORD
' pcsetsucceed : DWORD* optional, out
Declare PtrSafe Function JetEnableMultiInstanceA Lib "esent" ( _
    ByVal psetsysparam As LongPtr, _
    ByVal csetsysparam As Long, _
    ByVal pcsetsucceed As LongPtr) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。
import ctypes
from ctypes import wintypes

JetEnableMultiInstanceA = ctypes.windll.esent.JetEnableMultiInstanceA
JetEnableMultiInstanceA.restype = ctypes.c_int
JetEnableMultiInstanceA.argtypes = [
    ctypes.c_void_p,  # psetsysparam : JET_SETSYSPARAM_A* optional
    wintypes.DWORD,  # csetsysparam : DWORD
    ctypes.POINTER(wintypes.DWORD),  # pcsetsucceed : DWORD* optional, out
]
require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('ESENT.dll')
JetEnableMultiInstanceA = Fiddle::Function.new(
  lib['JetEnableMultiInstanceA'],
  [
    Fiddle::TYPE_VOIDP,  # psetsysparam : JET_SETSYSPARAM_A* optional
    -Fiddle::TYPE_INT,  # csetsysparam : DWORD
    Fiddle::TYPE_VOIDP,  # pcsetsucceed : DWORD* optional, out
  ],
  Fiddle::TYPE_INT)
#[link(name = "esent")]
extern "system" {
    fn JetEnableMultiInstanceA(
        psetsysparam: *mut JET_SETSYSPARAM_A,  // JET_SETSYSPARAM_A* optional
        csetsysparam: u32,  // DWORD
        pcsetsucceed: *mut u32  // DWORD* optional, out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.
$sig = @"
[DllImport("ESENT.dll", CharSet = CharSet.Ansi)]
public static extern int JetEnableMultiInstanceA(IntPtr psetsysparam, uint csetsysparam, IntPtr pcsetsucceed);
"@
$api = Add-Type -MemberDefinition $sig -Name 'ESENT_JetEnableMultiInstanceA' -Namespace Win32 -PassThru
# $api::JetEnableMultiInstanceA(psetsysparam, csetsysparam, pcsetsucceed)
#uselib "ESENT.dll"
#func global JetEnableMultiInstanceA "JetEnableMultiInstanceA" sptr, sptr, sptr
; JetEnableMultiInstanceA varptr(psetsysparam), csetsysparam, varptr(pcsetsucceed)   ; 戻り値は stat
; psetsysparam : JET_SETSYSPARAM_A* optional -> "sptr"
; csetsysparam : DWORD -> "sptr"
; pcsetsucceed : DWORD* optional, out -> "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 "ESENT.dll"
#cfunc global JetEnableMultiInstanceA "JetEnableMultiInstanceA" var, int, var
; res = JetEnableMultiInstanceA(psetsysparam, csetsysparam, pcsetsucceed)
; psetsysparam : JET_SETSYSPARAM_A* optional -> "var"
; csetsysparam : DWORD -> "int"
; pcsetsucceed : DWORD* optional, out -> "var"
; ※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。
出力引数: 
; INT JetEnableMultiInstanceA(JET_SETSYSPARAM_A* psetsysparam, DWORD csetsysparam, DWORD* pcsetsucceed)
#uselib "ESENT.dll"
#cfunc global JetEnableMultiInstanceA "JetEnableMultiInstanceA" var, int, var
; res = JetEnableMultiInstanceA(psetsysparam, csetsysparam, pcsetsucceed)
; psetsysparam : JET_SETSYSPARAM_A* optional -> "var"
; csetsysparam : DWORD -> "int"
; pcsetsucceed : DWORD* optional, out -> "var"
; ※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。
import (
	"golang.org/x/sys/windows"
	"unsafe"
)

var (
	esent = windows.NewLazySystemDLL("ESENT.dll")
	procJetEnableMultiInstanceA = esent.NewProc("JetEnableMultiInstanceA")
)

// psetsysparam (JET_SETSYSPARAM_A* optional), csetsysparam (DWORD), pcsetsucceed (DWORD* optional, out)
r1, _, err := procJetEnableMultiInstanceA.Call(
	uintptr(psetsysparam),
	uintptr(csetsysparam),
	uintptr(pcsetsucceed),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // INT
function JetEnableMultiInstanceA(
  psetsysparam: Pointer;   // JET_SETSYSPARAM_A* optional
  csetsysparam: DWORD;   // DWORD
  pcsetsucceed: Pointer   // DWORD* optional, out
): Integer; stdcall;
  external 'ESENT.dll' name 'JetEnableMultiInstanceA';
result := DllCall("ESENT\JetEnableMultiInstanceA"
    , "Ptr", psetsysparam   ; JET_SETSYSPARAM_A* optional
    , "UInt", csetsysparam   ; DWORD
    , "Ptr", pcsetsucceed   ; DWORD* optional, out
    , "Int")   ; return: INT
●JetEnableMultiInstanceA(psetsysparam, csetsysparam, pcsetsucceed) = DLL("ESENT.dll", "int JetEnableMultiInstanceA(void*, dword, void*)")
# 呼び出し: JetEnableMultiInstanceA(psetsysparam, csetsysparam, pcsetsucceed)
# psetsysparam : JET_SETSYSPARAM_A* optional -> "void*"
# csetsysparam : DWORD -> "dword"
# pcsetsucceed : DWORD* optional, out -> "void*"
# 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 "esent" fn JetEnableMultiInstanceA(
    psetsysparam: [*c]JET_SETSYSPARAM_A, // JET_SETSYSPARAM_A* optional
    csetsysparam: u32, // DWORD
    pcsetsucceed: [*c]u32 // DWORD* optional, out
) callconv(std.os.windows.WINAPI) i32;
proc JetEnableMultiInstanceA(
    psetsysparam: ptr JET_SETSYSPARAM_A,  # JET_SETSYSPARAM_A* optional
    csetsysparam: uint32,  # DWORD
    pcsetsucceed: ptr uint32  # DWORD* optional, out
): int32 {.importc: "JetEnableMultiInstanceA", stdcall, dynlib: "ESENT.dll".}
pragma(lib, "esent");
extern(Windows)
int JetEnableMultiInstanceA(
    JET_SETSYSPARAM_A* psetsysparam,   // JET_SETSYSPARAM_A* optional
    uint csetsysparam,   // DWORD
    uint* pcsetsucceed   // DWORD* optional, out
);
ccall((:JetEnableMultiInstanceA, "ESENT.dll"), stdcall, Int32,
      (Ptr{JET_SETSYSPARAM_A}, UInt32, Ptr{UInt32}),
      psetsysparam, csetsysparam, pcsetsucceed)
# psetsysparam : JET_SETSYSPARAM_A* optional -> Ptr{JET_SETSYSPARAM_A}
# csetsysparam : DWORD -> UInt32
# pcsetsucceed : DWORD* optional, out -> Ptr{UInt32}
# stdcall は 32bit のみ意味を持つ(x64 では無視)。
local ffi = require("ffi")
ffi.cdef[[
int32_t JetEnableMultiInstanceA(
    void* psetsysparam,
    uint32_t csetsysparam,
    uint32_t* pcsetsucceed);
]]
local esent = ffi.load("esent")
-- esent.JetEnableMultiInstanceA(psetsysparam, csetsysparam, pcsetsucceed)
-- psetsysparam : JET_SETSYSPARAM_A* optional
-- csetsysparam : DWORD
-- pcsetsucceed : DWORD* optional, out
-- 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('ESENT.dll');
const JetEnableMultiInstanceA = lib.func('__stdcall', 'JetEnableMultiInstanceA', 'int32_t', ['void *', 'uint32_t', 'uint32_t *']);
// JetEnableMultiInstanceA(psetsysparam, csetsysparam, pcsetsucceed)
// psetsysparam : JET_SETSYSPARAM_A* optional -> 'void *'
// csetsysparam : DWORD -> 'uint32_t'
// pcsetsucceed : DWORD* optional, out -> 'uint32_t *'
// 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("ESENT.dll", {
  JetEnableMultiInstanceA: { parameters: ["pointer", "u32", "pointer"], result: "i32" },
});
// lib.symbols.JetEnableMultiInstanceA(psetsysparam, csetsysparam, pcsetsucceed)
// psetsysparam : JET_SETSYSPARAM_A* optional -> "pointer"
// csetsysparam : DWORD -> "u32"
// pcsetsucceed : DWORD* optional, out -> "pointer"
// 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 JetEnableMultiInstanceA(
    void* psetsysparam,
    uint32_t csetsysparam,
    uint32_t* pcsetsucceed);
C, "ESENT.dll");
// $ffi->JetEnableMultiInstanceA(psetsysparam, csetsysparam, pcsetsucceed);
// psetsysparam : JET_SETSYSPARAM_A* optional
// csetsysparam : DWORD
// pcsetsucceed : DWORD* optional, out
// 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 Esent extends StdCallLibrary {
    Esent INSTANCE = Native.load("esent", Esent.class, W32APIOptions.ASCII_OPTIONS);
    int JetEnableMultiInstanceA(
        Pointer psetsysparam,   // JET_SETSYSPARAM_A* optional
        int csetsysparam,   // DWORD
        IntByReference pcsetsucceed   // DWORD* optional, out
    );
}
@[Link("esent")]
lib LibESENT
  fun JetEnableMultiInstanceA = JetEnableMultiInstanceA(
    psetsysparam : JET_SETSYSPARAM_A*,   # JET_SETSYSPARAM_A* optional
    csetsysparam : UInt32,   # DWORD
    pcsetsucceed : UInt32*   # DWORD* optional, out
  ) : 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 JetEnableMultiInstanceANative = Int32 Function(Pointer<Void>, Uint32, Pointer<Uint32>);
typedef JetEnableMultiInstanceADart = int Function(Pointer<Void>, int, Pointer<Uint32>);
final JetEnableMultiInstanceA = DynamicLibrary.open('ESENT.dll')
    .lookupFunction<JetEnableMultiInstanceANative, JetEnableMultiInstanceADart>('JetEnableMultiInstanceA');
// psetsysparam : JET_SETSYSPARAM_A* optional -> Pointer<Void>
// csetsysparam : DWORD -> Uint32
// pcsetsucceed : DWORD* optional, out -> Pointer<Uint32>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。
{$mode objfpc}{$H+}
function JetEnableMultiInstanceA(
  psetsysparam: Pointer;   // JET_SETSYSPARAM_A* optional
  csetsysparam: DWORD;   // DWORD
  pcsetsucceed: Pointer   // DWORD* optional, out
): Integer; stdcall;
  external 'ESENT.dll' name 'JetEnableMultiInstanceA';
import Foreign
import Foreign.C.Types
import Foreign.C.String

foreign import stdcall safe "JetEnableMultiInstanceA"
  c_JetEnableMultiInstanceA :: Ptr () -> Word32 -> Ptr Word32 -> IO Int32
-- psetsysparam : JET_SETSYSPARAM_A* optional -> Ptr ()
-- csetsysparam : DWORD -> Word32
-- pcsetsucceed : DWORD* optional, out -> Ptr Word32
-- 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 jetenablemultiinstancea =
  foreign "JetEnableMultiInstanceA"
    ((ptr void) @-> uint32_t @-> (ptr uint32_t) @-> returning int32_t)
(* psetsysparam : JET_SETSYSPARAM_A* optional -> (ptr void) *)
(* csetsysparam : DWORD -> uint32_t *)
(* pcsetsucceed : DWORD* optional, out -> (ptr uint32_t) *)
(* 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 esent (t "ESENT.dll"))
(cffi:use-foreign-library esent)

(cffi:defcfun ("JetEnableMultiInstanceA" jet-enable-multi-instance-a :convention :stdcall) :int32
  (psetsysparam :pointer)   ; JET_SETSYSPARAM_A* optional
  (csetsysparam :uint32)   ; DWORD
  (pcsetsucceed :pointer))   ; DWORD* optional, out
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。
use Win32::API;
my $JetEnableMultiInstanceA = Win32::API::More->new('ESENT',
    'int JetEnableMultiInstanceA(LPVOID psetsysparam, DWORD csetsysparam, LPVOID pcsetsucceed)');
# my $ret = $JetEnableMultiInstanceA->Call($psetsysparam, $csetsysparam, $pcsetsucceed);
# psetsysparam : JET_SETSYSPARAM_A* optional -> LPVOID
# csetsysparam : DWORD -> DWORD
# pcsetsucceed : DWORD* optional, out -> LPVOID
# 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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