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JetGetDatabaseInfoA

関数
オープン中のデータベースの情報を取得する(ANSI版)。
DLLESENT.dll文字セットANSI (-A)呼出規約winapi

シグネチャ

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

INT JetGetDatabaseInfoA(
    JET_SESID sesid,
    DWORD dbid,
    void* pvResult,
    DWORD cbMax,
    DWORD InfoLevel
);

パラメーター

名前型方向説明
sesidJET_SESIDinデータベース情報を取得するセッションのJET_SESIDハンドル。
dbidDWORDin情報取得対象のデータベースを識別するデータベースID(JET_DBID)。
pvResultvoid*out取得した情報を受け取る出力バッファのポインタ。InfoLevelに応じた型のデータが格納される。
cbMaxDWORDinpvResultバッファのサイズをバイト単位で指定する値。
InfoLevelDWORDin取得する情報の種類を指定する列挙値。JET_DbInfoFilesize等で取得項目を選ぶ。

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 JetGetDatabaseInfoA(
    JET_SESID sesid,
    DWORD dbid,
    void* pvResult,
    DWORD cbMax,
    DWORD InfoLevel
);
[DllImport("ESENT.dll", CharSet = CharSet.Ansi, ExactSpelling = true)]
static extern int JetGetDatabaseInfoA(
    UIntPtr sesid,   // JET_SESID
    uint dbid,   // DWORD
    IntPtr pvResult,   // void* out
    uint cbMax,   // DWORD
    uint InfoLevel   // DWORD
);
<DllImport("ESENT.dll", CharSet:=CharSet.Ansi, ExactSpelling:=True)>
Public Shared Function JetGetDatabaseInfoA(
    sesid As UIntPtr,   ' JET_SESID
    dbid As UInteger,   ' DWORD
    pvResult As IntPtr,   ' void* out
    cbMax As UInteger,   ' DWORD
    InfoLevel As UInteger   ' DWORD
) As Integer
End Function
' sesid : JET_SESID
' dbid : DWORD
' pvResult : void* out
' cbMax : DWORD
' InfoLevel : DWORD
Declare PtrSafe Function JetGetDatabaseInfoA Lib "esent" ( _
    ByVal sesid As LongPtr, _
    ByVal dbid As Long, _
    ByVal pvResult As LongPtr, _
    ByVal cbMax As Long, _
    ByVal InfoLevel 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

JetGetDatabaseInfoA = ctypes.windll.esent.JetGetDatabaseInfoA
JetGetDatabaseInfoA.restype = ctypes.c_int
JetGetDatabaseInfoA.argtypes = [
    ctypes.c_size_t,  # sesid : JET_SESID
    wintypes.DWORD,  # dbid : DWORD
    ctypes.POINTER(None),  # pvResult : void* out
    wintypes.DWORD,  # cbMax : DWORD
    wintypes.DWORD,  # InfoLevel : DWORD
]
require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('ESENT.dll')
JetGetDatabaseInfoA = Fiddle::Function.new(
  lib['JetGetDatabaseInfoA'],
  [
    Fiddle::TYPE_UINTPTR_T,  # sesid : JET_SESID
    -Fiddle::TYPE_INT,  # dbid : DWORD
    Fiddle::TYPE_VOIDP,  # pvResult : void* out
    -Fiddle::TYPE_INT,  # cbMax : DWORD
    -Fiddle::TYPE_INT,  # InfoLevel : DWORD
  ],
  Fiddle::TYPE_INT)
#[link(name = "esent")]
extern "system" {
    fn JetGetDatabaseInfoA(
        sesid: usize,  // JET_SESID
        dbid: u32,  // DWORD
        pvResult: *mut (),  // void* out
        cbMax: u32,  // DWORD
        InfoLevel: u32  // DWORD
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.
$sig = @"
[DllImport("ESENT.dll", CharSet = CharSet.Ansi)]
public static extern int JetGetDatabaseInfoA(UIntPtr sesid, uint dbid, IntPtr pvResult, uint cbMax, uint InfoLevel);
"@
$api = Add-Type -MemberDefinition $sig -Name 'ESENT_JetGetDatabaseInfoA' -Namespace Win32 -PassThru
# $api::JetGetDatabaseInfoA(sesid, dbid, pvResult, cbMax, InfoLevel)
#uselib "ESENT.dll"
#func global JetGetDatabaseInfoA "JetGetDatabaseInfoA" sptr, sptr, sptr, sptr, sptr
; JetGetDatabaseInfoA sesid, dbid, pvResult, cbMax, InfoLevel   ; 戻り値は stat
; sesid : JET_SESID -> "sptr"
; dbid : DWORD -> "sptr"
; pvResult : void* out -> "sptr"
; cbMax : DWORD -> "sptr"
; InfoLevel : 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 "ESENT.dll"
#cfunc global JetGetDatabaseInfoA "JetGetDatabaseInfoA" sptr, int, sptr, int, int
; res = JetGetDatabaseInfoA(sesid, dbid, pvResult, cbMax, InfoLevel)
; sesid : JET_SESID -> "sptr"
; dbid : DWORD -> "int"
; pvResult : void* out -> "sptr"
; cbMax : DWORD -> "int"
; InfoLevel : DWORD -> "int"
; INT JetGetDatabaseInfoA(JET_SESID sesid, DWORD dbid, void* pvResult, DWORD cbMax, DWORD InfoLevel)
#uselib "ESENT.dll"
#cfunc global JetGetDatabaseInfoA "JetGetDatabaseInfoA" intptr, int, intptr, int, int
; res = JetGetDatabaseInfoA(sesid, dbid, pvResult, cbMax, InfoLevel)
; sesid : JET_SESID -> "intptr"
; dbid : DWORD -> "int"
; pvResult : void* out -> "intptr"
; cbMax : DWORD -> "int"
; InfoLevel : DWORD -> "int"
import (
	"golang.org/x/sys/windows"
	"unsafe"
)

var (
	esent = windows.NewLazySystemDLL("ESENT.dll")
	procJetGetDatabaseInfoA = esent.NewProc("JetGetDatabaseInfoA")
)

// sesid (JET_SESID), dbid (DWORD), pvResult (void* out), cbMax (DWORD), InfoLevel (DWORD)
r1, _, err := procJetGetDatabaseInfoA.Call(
	uintptr(sesid),
	uintptr(dbid),
	uintptr(pvResult),
	uintptr(cbMax),
	uintptr(InfoLevel),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // INT
function JetGetDatabaseInfoA(
  sesid: NativeUInt;   // JET_SESID
  dbid: DWORD;   // DWORD
  pvResult: Pointer;   // void* out
  cbMax: DWORD;   // DWORD
  InfoLevel: DWORD   // DWORD
): Integer; stdcall;
  external 'ESENT.dll' name 'JetGetDatabaseInfoA';
result := DllCall("ESENT\JetGetDatabaseInfoA"
    , "UPtr", sesid   ; JET_SESID
    , "UInt", dbid   ; DWORD
    , "Ptr", pvResult   ; void* out
    , "UInt", cbMax   ; DWORD
    , "UInt", InfoLevel   ; DWORD
    , "Int")   ; return: INT
●JetGetDatabaseInfoA(sesid, dbid, pvResult, cbMax, InfoLevel) = DLL("ESENT.dll", "int JetGetDatabaseInfoA(int, dword, void*, dword, dword)")
# 呼び出し: JetGetDatabaseInfoA(sesid, dbid, pvResult, cbMax, InfoLevel)
# sesid : JET_SESID -> "int"
# dbid : DWORD -> "dword"
# pvResult : void* out -> "void*"
# cbMax : DWORD -> "dword"
# InfoLevel : 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)。
const std = @import("std");

extern "esent" fn JetGetDatabaseInfoA(
    sesid: usize, // JET_SESID
    dbid: u32, // DWORD
    pvResult: ?*anyopaque, // void* out
    cbMax: u32, // DWORD
    InfoLevel: u32 // DWORD
) callconv(std.os.windows.WINAPI) i32;
proc JetGetDatabaseInfoA(
    sesid: uint,  # JET_SESID
    dbid: uint32,  # DWORD
    pvResult: pointer,  # void* out
    cbMax: uint32,  # DWORD
    InfoLevel: uint32  # DWORD
): int32 {.importc: "JetGetDatabaseInfoA", stdcall, dynlib: "ESENT.dll".}
pragma(lib, "esent");
extern(Windows)
int JetGetDatabaseInfoA(
    size_t sesid,   // JET_SESID
    uint dbid,   // DWORD
    void* pvResult,   // void* out
    uint cbMax,   // DWORD
    uint InfoLevel   // DWORD
);
ccall((:JetGetDatabaseInfoA, "ESENT.dll"), stdcall, Int32,
      (Csize_t, UInt32, Ptr{Cvoid}, UInt32, UInt32),
      sesid, dbid, pvResult, cbMax, InfoLevel)
# sesid : JET_SESID -> Csize_t
# dbid : DWORD -> UInt32
# pvResult : void* out -> Ptr{Cvoid}
# cbMax : DWORD -> UInt32
# InfoLevel : DWORD -> UInt32
# stdcall は 32bit のみ意味を持つ(x64 では無視)。
local ffi = require("ffi")
ffi.cdef[[
int32_t JetGetDatabaseInfoA(
    uintptr_t sesid,
    uint32_t dbid,
    void* pvResult,
    uint32_t cbMax,
    uint32_t InfoLevel);
]]
local esent = ffi.load("esent")
-- esent.JetGetDatabaseInfoA(sesid, dbid, pvResult, cbMax, InfoLevel)
-- sesid : JET_SESID
-- dbid : DWORD
-- pvResult : void* out
-- cbMax : DWORD
-- InfoLevel : DWORD
-- 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 JetGetDatabaseInfoA = lib.func('__stdcall', 'JetGetDatabaseInfoA', 'int32_t', ['uintptr_t', 'uint32_t', 'void *', 'uint32_t', 'uint32_t']);
// JetGetDatabaseInfoA(sesid, dbid, pvResult, cbMax, InfoLevel)
// sesid : JET_SESID -> 'uintptr_t'
// dbid : DWORD -> 'uint32_t'
// pvResult : void* out -> 'void *'
// cbMax : DWORD -> 'uint32_t'
// InfoLevel : DWORD -> '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", {
  JetGetDatabaseInfoA: { parameters: ["usize", "u32", "pointer", "u32", "u32"], result: "i32" },
});
// lib.symbols.JetGetDatabaseInfoA(sesid, dbid, pvResult, cbMax, InfoLevel)
// sesid : JET_SESID -> "usize"
// dbid : DWORD -> "u32"
// pvResult : void* out -> "pointer"
// cbMax : DWORD -> "u32"
// InfoLevel : DWORD -> "u32"
// 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 JetGetDatabaseInfoA(
    size_t sesid,
    uint32_t dbid,
    void* pvResult,
    uint32_t cbMax,
    uint32_t InfoLevel);
C, "ESENT.dll");
// $ffi->JetGetDatabaseInfoA(sesid, dbid, pvResult, cbMax, InfoLevel);
// sesid : JET_SESID
// dbid : DWORD
// pvResult : void* out
// cbMax : DWORD
// InfoLevel : DWORD
// 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 JetGetDatabaseInfoA(
        long sesid,   // JET_SESID
        int dbid,   // DWORD
        Pointer pvResult,   // void* out
        int cbMax,   // DWORD
        int InfoLevel   // DWORD
    );
}
@[Link("esent")]
lib LibESENT
  fun JetGetDatabaseInfoA = JetGetDatabaseInfoA(
    sesid : LibC::SizeT,   # JET_SESID
    dbid : UInt32,   # DWORD
    pvResult : Void*,   # void* out
    cbMax : UInt32,   # DWORD
    InfoLevel : UInt32   # DWORD
  ) : 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 JetGetDatabaseInfoANative = Int32 Function(UintPtr, Uint32, Pointer<Void>, Uint32, Uint32);
typedef JetGetDatabaseInfoADart = int Function(int, int, Pointer<Void>, int, int);
final JetGetDatabaseInfoA = DynamicLibrary.open('ESENT.dll')
    .lookupFunction<JetGetDatabaseInfoANative, JetGetDatabaseInfoADart>('JetGetDatabaseInfoA');
// sesid : JET_SESID -> UintPtr
// dbid : DWORD -> Uint32
// pvResult : void* out -> Pointer<Void>
// cbMax : DWORD -> Uint32
// InfoLevel : DWORD -> Uint32
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。
{$mode objfpc}{$H+}
function JetGetDatabaseInfoA(
  sesid: NativeUInt;   // JET_SESID
  dbid: DWORD;   // DWORD
  pvResult: Pointer;   // void* out
  cbMax: DWORD;   // DWORD
  InfoLevel: DWORD   // DWORD
): Integer; stdcall;
  external 'ESENT.dll' name 'JetGetDatabaseInfoA';
import Foreign
import Foreign.C.Types
import Foreign.C.String

foreign import stdcall safe "JetGetDatabaseInfoA"
  c_JetGetDatabaseInfoA :: CUIntPtr -> Word32 -> Ptr () -> Word32 -> Word32 -> IO Int32
-- sesid : JET_SESID -> CUIntPtr
-- dbid : DWORD -> Word32
-- pvResult : void* out -> Ptr ()
-- cbMax : DWORD -> Word32
-- InfoLevel : DWORD -> 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 jetgetdatabaseinfoa =
  foreign "JetGetDatabaseInfoA"
    (size_t @-> uint32_t @-> (ptr void) @-> uint32_t @-> uint32_t @-> returning int32_t)
(* sesid : JET_SESID -> size_t *)
(* dbid : DWORD -> uint32_t *)
(* pvResult : void* out -> (ptr void) *)
(* cbMax : DWORD -> uint32_t *)
(* InfoLevel : DWORD -> 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 ("JetGetDatabaseInfoA" jet-get-database-info-a :convention :stdcall) :int32
  (sesid :uint64)   ; JET_SESID
  (dbid :uint32)   ; DWORD
  (pv-result :pointer)   ; void* out
  (cb-max :uint32)   ; DWORD
  (info-level :uint32))   ; DWORD
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。
use Win32::API;
my $JetGetDatabaseInfoA = Win32::API::More->new('ESENT',
    'int JetGetDatabaseInfoA(WPARAM sesid, DWORD dbid, LPVOID pvResult, DWORD cbMax, DWORD InfoLevel)');
# my $ret = $JetGetDatabaseInfoA->Call($sesid, $dbid, $pvResult, $cbMax, $InfoLevel);
# sesid : JET_SESID -> WPARAM
# dbid : DWORD -> DWORD
# pvResult : void* out -> LPVOID
# cbMax : DWORD -> DWORD
# InfoLevel : DWORD -> DWORD
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。

関連項目

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