JetGetInstanceInfoW

関数

実行中の各ESEインスタンスとデータベースの情報を取得する(Unicode版)。

DLLESENT.dll文字セットUnicode (-W)呼出規約winapi

シグネチャ

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

INT JetGetInstanceInfoW(
    DWORD* pcInstanceInfo,
    JET_INSTANCE_INFO_W** paInstanceInfo
);

パラメーター

名前	型	方向
pcInstanceInfo	DWORD*	out
paInstanceInfo	JET_INSTANCE_INFO_W**	out

戻り値の型: INT

各言語での呼び出し定義

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

INT JetGetInstanceInfoW(
    DWORD* pcInstanceInfo,
    JET_INSTANCE_INFO_W** paInstanceInfo
);

[DllImport("ESENT.dll", CharSet = CharSet.Unicode, ExactSpelling = true)]
static extern int JetGetInstanceInfoW(
    out uint pcInstanceInfo,   // DWORD* out
    IntPtr paInstanceInfo   // JET_INSTANCE_INFO_W** out
);

<DllImport("ESENT.dll", CharSet:=CharSet.Unicode, ExactSpelling:=True)>
Public Shared Function JetGetInstanceInfoW(
    <Out> ByRef pcInstanceInfo As UInteger,   ' DWORD* out
    paInstanceInfo As IntPtr   ' JET_INSTANCE_INFO_W** out
) As Integer
End Function

' pcInstanceInfo : DWORD* out
' paInstanceInfo : JET_INSTANCE_INFO_W** out
Declare PtrSafe Function JetGetInstanceInfoW Lib "esent" ( _
    ByRef pcInstanceInfo As Long, _
    ByVal paInstanceInfo As LongPtr) As Long
' 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

JetGetInstanceInfoW = ctypes.windll.esent.JetGetInstanceInfoW
JetGetInstanceInfoW.restype = ctypes.c_int
JetGetInstanceInfoW.argtypes = [
    ctypes.POINTER(wintypes.DWORD),  # pcInstanceInfo : DWORD* out
    ctypes.c_void_p,  # paInstanceInfo : JET_INSTANCE_INFO_W** out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('ESENT.dll')
JetGetInstanceInfoW = Fiddle::Function.new(
  lib['JetGetInstanceInfoW'],
  [
    Fiddle::TYPE_VOIDP,  # pcInstanceInfo : DWORD* out
    Fiddle::TYPE_VOIDP,  # paInstanceInfo : JET_INSTANCE_INFO_W** out
  ],
  Fiddle::TYPE_INT)
# Wide strings: pass str.encode("UTF-16LE") + "\x00\x00"

#[link(name = "esent")]
extern "system" {
    fn JetGetInstanceInfoW(
        pcInstanceInfo: *mut u32,  // DWORD* out
        paInstanceInfo: *mut *mut JET_INSTANCE_INFO_W  // JET_INSTANCE_INFO_W** out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("ESENT.dll", CharSet = CharSet.Unicode)]
public static extern int JetGetInstanceInfoW(out uint pcInstanceInfo, IntPtr paInstanceInfo);
"@
$api = Add-Type -MemberDefinition $sig -Name 'ESENT_JetGetInstanceInfoW' -Namespace Win32 -PassThru
# $api::JetGetInstanceInfoW(pcInstanceInfo, paInstanceInfo)

#uselib "ESENT.dll"
#func global JetGetInstanceInfoW "JetGetInstanceInfoW" wptr, wptr
; JetGetInstanceInfoW varptr(pcInstanceInfo), varptr(paInstanceInfo)   ; 戻り値は stat
; pcInstanceInfo : DWORD* out -> "wptr"
; paInstanceInfo : JET_INSTANCE_INFO_W** out -> "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 "ESENT.dll"
#cfunc global JetGetInstanceInfoW "JetGetInstanceInfoW" var, var
; res = JetGetInstanceInfoW(pcInstanceInfo, paInstanceInfo)
; pcInstanceInfo : DWORD* out -> "var"
; paInstanceInfo : JET_INSTANCE_INFO_W** 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。#uselib "ESENT.dll"
#cfunc global JetGetInstanceInfoW "JetGetInstanceInfoW" sptr, sptr
; res = JetGetInstanceInfoW(varptr(pcInstanceInfo), varptr(paInstanceInfo))
; pcInstanceInfo : DWORD* out -> "sptr"
; paInstanceInfo : JET_INSTANCE_INFO_W** out -> "sptr"
; ※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:

; INT JetGetInstanceInfoW(DWORD* pcInstanceInfo, JET_INSTANCE_INFO_W** paInstanceInfo)
#uselib "ESENT.dll"
#cfunc global JetGetInstanceInfoW "JetGetInstanceInfoW" var, var
; res = JetGetInstanceInfoW(pcInstanceInfo, paInstanceInfo)
; pcInstanceInfo : DWORD* out -> "var"
; paInstanceInfo : JET_INSTANCE_INFO_W** 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。; INT JetGetInstanceInfoW(DWORD* pcInstanceInfo, JET_INSTANCE_INFO_W** paInstanceInfo)
#uselib "ESENT.dll"
#cfunc global JetGetInstanceInfoW "JetGetInstanceInfoW" intptr, intptr
; res = JetGetInstanceInfoW(varptr(pcInstanceInfo), varptr(paInstanceInfo))
; pcInstanceInfo : DWORD* out -> "intptr"
; paInstanceInfo : JET_INSTANCE_INFO_W** out -> "intptr"
; ※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 (
	esent = windows.NewLazySystemDLL("ESENT.dll")
	procJetGetInstanceInfoW = esent.NewProc("JetGetInstanceInfoW")
)

// pcInstanceInfo (DWORD* out), paInstanceInfo (JET_INSTANCE_INFO_W** out)
r1, _, err := procJetGetInstanceInfoW.Call(
	uintptr(pcInstanceInfo),
	uintptr(paInstanceInfo),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // INT

function JetGetInstanceInfoW(
  pcInstanceInfo: Pointer;   // DWORD* out
  paInstanceInfo: Pointer   // JET_INSTANCE_INFO_W** out
): Integer; stdcall;
  external 'ESENT.dll' name 'JetGetInstanceInfoW';

result := DllCall("ESENT\JetGetInstanceInfoW"
    , "Ptr", pcInstanceInfo   ; DWORD* out
    , "Ptr", paInstanceInfo   ; JET_INSTANCE_INFO_W** out
    , "Int")   ; return: INT

●JetGetInstanceInfoW(pcInstanceInfo, paInstanceInfo) = DLL("ESENT.dll", "int JetGetInstanceInfoW(void*, void*)")
# 呼び出し: JetGetInstanceInfoW(pcInstanceInfo, paInstanceInfo)
# pcInstanceInfo : DWORD* out -> "void*"
# paInstanceInfo : JET_INSTANCE_INFO_W** 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)。
# ※-W(Unicode)関数。なでしこ1はANSIのため -A 版の利用を推奨。