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JetPrereadIndexRanges

関数
指定したインデックス範囲のレコードを事前に先読みする。
DLLESENT.dll呼出規約winapi
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シグネチャ

// ESENT.dll
#include <windows.h>

INT JetPrereadIndexRanges(
    JET_SESID sesid,
    JET_TABLEID tableid,
    const JET_INDEX_RANGE* rgIndexRanges,
    DWORD cIndexRanges,
    DWORD* pcRangesPreread,   // optional
    const DWORD* rgcolumnidPreread,
    DWORD ccolumnidPreread,
    DWORD grbit
);

パラメーター

名前型方向説明
sesidJET_SESIDinインデックス範囲の先読みを行うセッションのJET_SESIDハンドル。
tableidJET_TABLEIDin先読み対象のテーブルカーソルハンドル。
rgIndexRangesJET_INDEX_RANGE*in先読みするインデックス範囲を保持するJET_INDEX_RANGE配列のポインタ。
cIndexRangesDWORDinrgIndexRanges配列の要素数を指定する値。
pcRangesPrereadDWORD*outoptional実際に先読みされた範囲数を受け取る出力ポインタ。NULL可。
rgcolumnidPrereadDWORD*inあわせて先読みする列のID配列ポインタ。NULL可。
ccolumnidPrereadDWORDinrgcolumnidPreread配列の要素数を指定する値。
grbitDWORDin先読み動作を制御するビットフラグ。方向や先頭スキップ等を指定する。

戻り値の型: INT

各言語での呼び出し定義

// ESENT.dll
#include <windows.h>

INT JetPrereadIndexRanges(
    JET_SESID sesid,
    JET_TABLEID tableid,
    const JET_INDEX_RANGE* rgIndexRanges,
    DWORD cIndexRanges,
    DWORD* pcRangesPreread,   // optional
    const DWORD* rgcolumnidPreread,
    DWORD ccolumnidPreread,
    DWORD grbit
);
[DllImport("ESENT.dll", ExactSpelling = true)]
static extern int JetPrereadIndexRanges(
    UIntPtr sesid,   // JET_SESID
    UIntPtr tableid,   // JET_TABLEID
    IntPtr rgIndexRanges,   // JET_INDEX_RANGE*
    uint cIndexRanges,   // DWORD
    IntPtr pcRangesPreread,   // DWORD* optional, out
    ref uint rgcolumnidPreread,   // DWORD*
    uint ccolumnidPreread,   // DWORD
    uint grbit   // DWORD
);
<DllImport("ESENT.dll", ExactSpelling:=True)>
Public Shared Function JetPrereadIndexRanges(
    sesid As UIntPtr,   ' JET_SESID
    tableid As UIntPtr,   ' JET_TABLEID
    rgIndexRanges As IntPtr,   ' JET_INDEX_RANGE*
    cIndexRanges As UInteger,   ' DWORD
    pcRangesPreread As IntPtr,   ' DWORD* optional, out
    ByRef rgcolumnidPreread As UInteger,   ' DWORD*
    ccolumnidPreread As UInteger,   ' DWORD
    grbit As UInteger   ' DWORD
) As Integer
End Function
' sesid : JET_SESID
' tableid : JET_TABLEID
' rgIndexRanges : JET_INDEX_RANGE*
' cIndexRanges : DWORD
' pcRangesPreread : DWORD* optional, out
' rgcolumnidPreread : DWORD*
' ccolumnidPreread : DWORD
' grbit : DWORD
Declare PtrSafe Function JetPrereadIndexRanges Lib "esent" ( _
    ByVal sesid As LongPtr, _
    ByVal tableid As LongPtr, _
    ByVal rgIndexRanges As LongPtr, _
    ByVal cIndexRanges As Long, _
    ByVal pcRangesPreread As LongPtr, _
    ByRef rgcolumnidPreread As Long, _
    ByVal ccolumnidPreread As Long, _
    ByVal grbit 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

JetPrereadIndexRanges = ctypes.windll.esent.JetPrereadIndexRanges
JetPrereadIndexRanges.restype = ctypes.c_int
JetPrereadIndexRanges.argtypes = [
    ctypes.c_size_t,  # sesid : JET_SESID
    ctypes.c_size_t,  # tableid : JET_TABLEID
    ctypes.c_void_p,  # rgIndexRanges : JET_INDEX_RANGE*
    wintypes.DWORD,  # cIndexRanges : DWORD
    ctypes.POINTER(wintypes.DWORD),  # pcRangesPreread : DWORD* optional, out
    ctypes.POINTER(wintypes.DWORD),  # rgcolumnidPreread : DWORD*
    wintypes.DWORD,  # ccolumnidPreread : DWORD
    wintypes.DWORD,  # grbit : DWORD
]
require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('ESENT.dll')
JetPrereadIndexRanges = Fiddle::Function.new(
  lib['JetPrereadIndexRanges'],
  [
    Fiddle::TYPE_UINTPTR_T,  # sesid : JET_SESID
    Fiddle::TYPE_UINTPTR_T,  # tableid : JET_TABLEID
    Fiddle::TYPE_VOIDP,  # rgIndexRanges : JET_INDEX_RANGE*
    -Fiddle::TYPE_INT,  # cIndexRanges : DWORD
    Fiddle::TYPE_VOIDP,  # pcRangesPreread : DWORD* optional, out
    Fiddle::TYPE_VOIDP,  # rgcolumnidPreread : DWORD*
    -Fiddle::TYPE_INT,  # ccolumnidPreread : DWORD
    -Fiddle::TYPE_INT,  # grbit : DWORD
  ],
  Fiddle::TYPE_INT)
#[link(name = "esent")]
extern "system" {
    fn JetPrereadIndexRanges(
        sesid: usize,  // JET_SESID
        tableid: usize,  // JET_TABLEID
        rgIndexRanges: *const JET_INDEX_RANGE,  // JET_INDEX_RANGE*
        cIndexRanges: u32,  // DWORD
        pcRangesPreread: *mut u32,  // DWORD* optional, out
        rgcolumnidPreread: *const u32,  // DWORD*
        ccolumnidPreread: u32,  // DWORD
        grbit: u32  // DWORD
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.
$sig = @"
[DllImport("ESENT.dll")]
public static extern int JetPrereadIndexRanges(UIntPtr sesid, UIntPtr tableid, IntPtr rgIndexRanges, uint cIndexRanges, IntPtr pcRangesPreread, ref uint rgcolumnidPreread, uint ccolumnidPreread, uint grbit);
"@
$api = Add-Type -MemberDefinition $sig -Name 'ESENT_JetPrereadIndexRanges' -Namespace Win32 -PassThru
# $api::JetPrereadIndexRanges(sesid, tableid, rgIndexRanges, cIndexRanges, pcRangesPreread, rgcolumnidPreread, ccolumnidPreread, grbit)
#uselib "ESENT.dll"
#func global JetPrereadIndexRanges "JetPrereadIndexRanges" sptr, sptr, sptr, sptr, sptr, sptr, sptr, sptr
; JetPrereadIndexRanges sesid, tableid, varptr(rgIndexRanges), cIndexRanges, varptr(pcRangesPreread), varptr(rgcolumnidPreread), ccolumnidPreread, grbit   ; 戻り値は stat
; sesid : JET_SESID -> "sptr"
; tableid : JET_TABLEID -> "sptr"
; rgIndexRanges : JET_INDEX_RANGE* -> "sptr"
; cIndexRanges : DWORD -> "sptr"
; pcRangesPreread : DWORD* optional, out -> "sptr"
; rgcolumnidPreread : DWORD* -> "sptr"
; ccolumnidPreread : DWORD -> "sptr"
; grbit : 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。
出力引数: 
#uselib "ESENT.dll"
#cfunc global JetPrereadIndexRanges "JetPrereadIndexRanges" sptr, sptr, var, int, var, var, int, int
; res = JetPrereadIndexRanges(sesid, tableid, rgIndexRanges, cIndexRanges, pcRangesPreread, rgcolumnidPreread, ccolumnidPreread, grbit)
; sesid : JET_SESID -> "sptr"
; tableid : JET_TABLEID -> "sptr"
; rgIndexRanges : JET_INDEX_RANGE* -> "var"
; cIndexRanges : DWORD -> "int"
; pcRangesPreread : DWORD* optional, out -> "var"
; rgcolumnidPreread : DWORD* -> "var"
; ccolumnidPreread : DWORD -> "int"
; grbit : DWORD -> "int"
; ※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 JetPrereadIndexRanges(JET_SESID sesid, JET_TABLEID tableid, JET_INDEX_RANGE* rgIndexRanges, DWORD cIndexRanges, DWORD* pcRangesPreread, DWORD* rgcolumnidPreread, DWORD ccolumnidPreread, DWORD grbit)
#uselib "ESENT.dll"
#cfunc global JetPrereadIndexRanges "JetPrereadIndexRanges" intptr, intptr, var, int, var, var, int, int
; res = JetPrereadIndexRanges(sesid, tableid, rgIndexRanges, cIndexRanges, pcRangesPreread, rgcolumnidPreread, ccolumnidPreread, grbit)
; sesid : JET_SESID -> "intptr"
; tableid : JET_TABLEID -> "intptr"
; rgIndexRanges : JET_INDEX_RANGE* -> "var"
; cIndexRanges : DWORD -> "int"
; pcRangesPreread : DWORD* optional, out -> "var"
; rgcolumnidPreread : DWORD* -> "var"
; ccolumnidPreread : DWORD -> "int"
; grbit : DWORD -> "int"
; ※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")
	procJetPrereadIndexRanges = esent.NewProc("JetPrereadIndexRanges")
)

// sesid (JET_SESID), tableid (JET_TABLEID), rgIndexRanges (JET_INDEX_RANGE*), cIndexRanges (DWORD), pcRangesPreread (DWORD* optional, out), rgcolumnidPreread (DWORD*), ccolumnidPreread (DWORD), grbit (DWORD)
r1, _, err := procJetPrereadIndexRanges.Call(
	uintptr(sesid),
	uintptr(tableid),
	uintptr(rgIndexRanges),
	uintptr(cIndexRanges),
	uintptr(pcRangesPreread),
	uintptr(rgcolumnidPreread),
	uintptr(ccolumnidPreread),
	uintptr(grbit),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // INT
function JetPrereadIndexRanges(
  sesid: NativeUInt;   // JET_SESID
  tableid: NativeUInt;   // JET_TABLEID
  rgIndexRanges: Pointer;   // JET_INDEX_RANGE*
  cIndexRanges: DWORD;   // DWORD
  pcRangesPreread: Pointer;   // DWORD* optional, out
  rgcolumnidPreread: Pointer;   // DWORD*
  ccolumnidPreread: DWORD;   // DWORD
  grbit: DWORD   // DWORD
): Integer; stdcall;
  external 'ESENT.dll' name 'JetPrereadIndexRanges';
result := DllCall("ESENT\JetPrereadIndexRanges"
    , "UPtr", sesid   ; JET_SESID
    , "UPtr", tableid   ; JET_TABLEID
    , "Ptr", rgIndexRanges   ; JET_INDEX_RANGE*
    , "UInt", cIndexRanges   ; DWORD
    , "Ptr", pcRangesPreread   ; DWORD* optional, out
    , "Ptr", rgcolumnidPreread   ; DWORD*
    , "UInt", ccolumnidPreread   ; DWORD
    , "UInt", grbit   ; DWORD
    , "Int")   ; return: INT
●JetPrereadIndexRanges(sesid, tableid, rgIndexRanges, cIndexRanges, pcRangesPreread, rgcolumnidPreread, ccolumnidPreread, grbit) = DLL("ESENT.dll", "int JetPrereadIndexRanges(int, int, void*, dword, void*, void*, dword, dword)")
# 呼び出し: JetPrereadIndexRanges(sesid, tableid, rgIndexRanges, cIndexRanges, pcRangesPreread, rgcolumnidPreread, ccolumnidPreread, grbit)
# sesid : JET_SESID -> "int"
# tableid : JET_TABLEID -> "int"
# rgIndexRanges : JET_INDEX_RANGE* -> "void*"
# cIndexRanges : DWORD -> "dword"
# pcRangesPreread : DWORD* optional, out -> "void*"
# rgcolumnidPreread : DWORD* -> "void*"
# ccolumnidPreread : DWORD -> "dword"
# grbit : 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 JetPrereadIndexRanges(
    sesid: usize, // JET_SESID
    tableid: usize, // JET_TABLEID
    rgIndexRanges: [*c]JET_INDEX_RANGE, // JET_INDEX_RANGE*
    cIndexRanges: u32, // DWORD
    pcRangesPreread: [*c]u32, // DWORD* optional, out
    rgcolumnidPreread: [*c]u32, // DWORD*
    ccolumnidPreread: u32, // DWORD
    grbit: u32 // DWORD
) callconv(std.os.windows.WINAPI) i32;
proc JetPrereadIndexRanges(
    sesid: uint,  # JET_SESID
    tableid: uint,  # JET_TABLEID
    rgIndexRanges: ptr JET_INDEX_RANGE,  # JET_INDEX_RANGE*
    cIndexRanges: uint32,  # DWORD
    pcRangesPreread: ptr uint32,  # DWORD* optional, out
    rgcolumnidPreread: ptr uint32,  # DWORD*
    ccolumnidPreread: uint32,  # DWORD
    grbit: uint32  # DWORD
): int32 {.importc: "JetPrereadIndexRanges", stdcall, dynlib: "ESENT.dll".}
pragma(lib, "esent");
extern(Windows)
int JetPrereadIndexRanges(
    size_t sesid,   // JET_SESID
    size_t tableid,   // JET_TABLEID
    JET_INDEX_RANGE* rgIndexRanges,   // JET_INDEX_RANGE*
    uint cIndexRanges,   // DWORD
    uint* pcRangesPreread,   // DWORD* optional, out
    uint* rgcolumnidPreread,   // DWORD*
    uint ccolumnidPreread,   // DWORD
    uint grbit   // DWORD
);
ccall((:JetPrereadIndexRanges, "ESENT.dll"), stdcall, Int32,
      (Csize_t, Csize_t, Ptr{JET_INDEX_RANGE}, UInt32, Ptr{UInt32}, Ptr{UInt32}, UInt32, UInt32),
      sesid, tableid, rgIndexRanges, cIndexRanges, pcRangesPreread, rgcolumnidPreread, ccolumnidPreread, grbit)
# sesid : JET_SESID -> Csize_t
# tableid : JET_TABLEID -> Csize_t
# rgIndexRanges : JET_INDEX_RANGE* -> Ptr{JET_INDEX_RANGE}
# cIndexRanges : DWORD -> UInt32
# pcRangesPreread : DWORD* optional, out -> Ptr{UInt32}
# rgcolumnidPreread : DWORD* -> Ptr{UInt32}
# ccolumnidPreread : DWORD -> UInt32
# grbit : 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 JetPrereadIndexRanges(
    uintptr_t sesid,
    uintptr_t tableid,
    void* rgIndexRanges,
    uint32_t cIndexRanges,
    uint32_t* pcRangesPreread,
    uint32_t* rgcolumnidPreread,
    uint32_t ccolumnidPreread,
    uint32_t grbit);
]]
local esent = ffi.load("esent")
-- esent.JetPrereadIndexRanges(sesid, tableid, rgIndexRanges, cIndexRanges, pcRangesPreread, rgcolumnidPreread, ccolumnidPreread, grbit)
-- sesid : JET_SESID
-- tableid : JET_TABLEID
-- rgIndexRanges : JET_INDEX_RANGE*
-- cIndexRanges : DWORD
-- pcRangesPreread : DWORD* optional, out
-- rgcolumnidPreread : DWORD*
-- ccolumnidPreread : DWORD
-- grbit : 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 JetPrereadIndexRanges = lib.func('__stdcall', 'JetPrereadIndexRanges', 'int32_t', ['uintptr_t', 'uintptr_t', 'void *', 'uint32_t', 'uint32_t *', 'uint32_t *', 'uint32_t', 'uint32_t']);
// JetPrereadIndexRanges(sesid, tableid, rgIndexRanges, cIndexRanges, pcRangesPreread, rgcolumnidPreread, ccolumnidPreread, grbit)
// sesid : JET_SESID -> 'uintptr_t'
// tableid : JET_TABLEID -> 'uintptr_t'
// rgIndexRanges : JET_INDEX_RANGE* -> 'void *'
// cIndexRanges : DWORD -> 'uint32_t'
// pcRangesPreread : DWORD* optional, out -> 'uint32_t *'
// rgcolumnidPreread : DWORD* -> 'uint32_t *'
// ccolumnidPreread : DWORD -> 'uint32_t'
// grbit : 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", {
  JetPrereadIndexRanges: { parameters: ["usize", "usize", "pointer", "u32", "pointer", "pointer", "u32", "u32"], result: "i32" },
});
// lib.symbols.JetPrereadIndexRanges(sesid, tableid, rgIndexRanges, cIndexRanges, pcRangesPreread, rgcolumnidPreread, ccolumnidPreread, grbit)
// sesid : JET_SESID -> "usize"
// tableid : JET_TABLEID -> "usize"
// rgIndexRanges : JET_INDEX_RANGE* -> "pointer"
// cIndexRanges : DWORD -> "u32"
// pcRangesPreread : DWORD* optional, out -> "pointer"
// rgcolumnidPreread : DWORD* -> "pointer"
// ccolumnidPreread : DWORD -> "u32"
// grbit : DWORD -> "u32"
// 文字列引数は "buffer"(NUL 終端のバイト列を Uint8Array で渡す)。
// 値渡し構造体は { struct: [ ...field types... ] } を使用。
<?php
$ffi = FFI::cdef(<<<C
int32_t JetPrereadIndexRanges(
    size_t sesid,
    size_t tableid,
    void* rgIndexRanges,
    uint32_t cIndexRanges,
    uint32_t* pcRangesPreread,
    uint32_t* rgcolumnidPreread,
    uint32_t ccolumnidPreread,
    uint32_t grbit);
C, "ESENT.dll");
// $ffi->JetPrereadIndexRanges(sesid, tableid, rgIndexRanges, cIndexRanges, pcRangesPreread, rgcolumnidPreread, ccolumnidPreread, grbit);
// sesid : JET_SESID
// tableid : JET_TABLEID
// rgIndexRanges : JET_INDEX_RANGE*
// cIndexRanges : DWORD
// pcRangesPreread : DWORD* optional, out
// rgcolumnidPreread : DWORD*
// ccolumnidPreread : DWORD
// grbit : 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);
    int JetPrereadIndexRanges(
        long sesid,   // JET_SESID
        long tableid,   // JET_TABLEID
        Pointer rgIndexRanges,   // JET_INDEX_RANGE*
        int cIndexRanges,   // DWORD
        IntByReference pcRangesPreread,   // DWORD* optional, out
        IntByReference rgcolumnidPreread,   // DWORD*
        int ccolumnidPreread,   // DWORD
        int grbit   // DWORD
    );
}
@[Link("esent")]
lib LibESENT
  fun JetPrereadIndexRanges = JetPrereadIndexRanges(
    sesid : LibC::SizeT,   # JET_SESID
    tableid : LibC::SizeT,   # JET_TABLEID
    rgIndexRanges : JET_INDEX_RANGE*,   # JET_INDEX_RANGE*
    cIndexRanges : UInt32,   # DWORD
    pcRangesPreread : UInt32*,   # DWORD* optional, out
    rgcolumnidPreread : UInt32*,   # DWORD*
    ccolumnidPreread : UInt32,   # DWORD
    grbit : 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 JetPrereadIndexRangesNative = Int32 Function(UintPtr, UintPtr, Pointer<Void>, Uint32, Pointer<Uint32>, Pointer<Uint32>, Uint32, Uint32);
typedef JetPrereadIndexRangesDart = int Function(int, int, Pointer<Void>, int, Pointer<Uint32>, Pointer<Uint32>, int, int);
final JetPrereadIndexRanges = DynamicLibrary.open('ESENT.dll')
    .lookupFunction<JetPrereadIndexRangesNative, JetPrereadIndexRangesDart>('JetPrereadIndexRanges');
// sesid : JET_SESID -> UintPtr
// tableid : JET_TABLEID -> UintPtr
// rgIndexRanges : JET_INDEX_RANGE* -> Pointer<Void>
// cIndexRanges : DWORD -> Uint32
// pcRangesPreread : DWORD* optional, out -> Pointer<Uint32>
// rgcolumnidPreread : DWORD* -> Pointer<Uint32>
// ccolumnidPreread : DWORD -> Uint32
// grbit : DWORD -> Uint32
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。
{$mode objfpc}{$H+}
function JetPrereadIndexRanges(
  sesid: NativeUInt;   // JET_SESID
  tableid: NativeUInt;   // JET_TABLEID
  rgIndexRanges: Pointer;   // JET_INDEX_RANGE*
  cIndexRanges: DWORD;   // DWORD
  pcRangesPreread: Pointer;   // DWORD* optional, out
  rgcolumnidPreread: Pointer;   // DWORD*
  ccolumnidPreread: DWORD;   // DWORD
  grbit: DWORD   // DWORD
): Integer; stdcall;
  external 'ESENT.dll' name 'JetPrereadIndexRanges';
import Foreign
import Foreign.C.Types
import Foreign.C.String

foreign import stdcall safe "JetPrereadIndexRanges"
  c_JetPrereadIndexRanges :: CUIntPtr -> CUIntPtr -> Ptr () -> Word32 -> Ptr Word32 -> Ptr Word32 -> Word32 -> Word32 -> IO Int32
-- sesid : JET_SESID -> CUIntPtr
-- tableid : JET_TABLEID -> CUIntPtr
-- rgIndexRanges : JET_INDEX_RANGE* -> Ptr ()
-- cIndexRanges : DWORD -> Word32
-- pcRangesPreread : DWORD* optional, out -> Ptr Word32
-- rgcolumnidPreread : DWORD* -> Ptr Word32
-- ccolumnidPreread : DWORD -> Word32
-- grbit : 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 jetprereadindexranges =
  foreign "JetPrereadIndexRanges"
    (size_t @-> size_t @-> (ptr void) @-> uint32_t @-> (ptr uint32_t) @-> (ptr uint32_t) @-> uint32_t @-> uint32_t @-> returning int32_t)
(* sesid : JET_SESID -> size_t *)
(* tableid : JET_TABLEID -> size_t *)
(* rgIndexRanges : JET_INDEX_RANGE* -> (ptr void) *)
(* cIndexRanges : DWORD -> uint32_t *)
(* pcRangesPreread : DWORD* optional, out -> (ptr uint32_t) *)
(* rgcolumnidPreread : DWORD* -> (ptr uint32_t) *)
(* ccolumnidPreread : DWORD -> uint32_t *)
(* grbit : 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 ("JetPrereadIndexRanges" jet-preread-index-ranges :convention :stdcall) :int32
  (sesid :uint64)   ; JET_SESID
  (tableid :uint64)   ; JET_TABLEID
  (rg-index-ranges :pointer)   ; JET_INDEX_RANGE*
  (c-index-ranges :uint32)   ; DWORD
  (pc-ranges-preread :pointer)   ; DWORD* optional, out
  (rgcolumnid-preread :pointer)   ; DWORD*
  (ccolumnid-preread :uint32)   ; DWORD
  (grbit :uint32))   ; DWORD
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。
use Win32::API;
my $JetPrereadIndexRanges = Win32::API::More->new('ESENT',
    'int JetPrereadIndexRanges(WPARAM sesid, WPARAM tableid, LPVOID rgIndexRanges, DWORD cIndexRanges, LPVOID pcRangesPreread, LPVOID rgcolumnidPreread, DWORD ccolumnidPreread, DWORD grbit)');
# my $ret = $JetPrereadIndexRanges->Call($sesid, $tableid, $rgIndexRanges, $cIndexRanges, $pcRangesPreread, $rgcolumnidPreread, $ccolumnidPreread, $grbit);
# sesid : JET_SESID -> WPARAM
# tableid : JET_TABLEID -> WPARAM
# rgIndexRanges : JET_INDEX_RANGE* -> LPVOID
# cIndexRanges : DWORD -> DWORD
# pcRangesPreread : DWORD* optional, out -> LPVOID
# rgcolumnidPreread : DWORD* -> LPVOID
# ccolumnidPreread : DWORD -> DWORD
# grbit : DWORD -> DWORD
# 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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