JetEnumerateColumns

関数

現在のレコードの列を列挙して値を効率的に取得する。

DLLESENT.dll呼出規約winapi

シグネチャ

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

INT JetEnumerateColumns(
    JET_SESID sesid,
    JET_TABLEID tableid,
    DWORD cEnumColumnId,
    JET_ENUMCOLUMNID* rgEnumColumnId,   // optional
    DWORD* pcEnumColumn,
    JET_ENUMCOLUMN** prgEnumColumn,
    JET_PFNREALLOC pfnRealloc,
    void* pvReallocContext,   // optional
    DWORD cbDataMost,
    DWORD grbit
);

パラメーター

名前	型	方向	説明
sesid	JET_SESID	in	列の列挙を行うセッションのJET_SESIDハンドル。
tableid	JET_TABLEID	in	対象レコードを持つテーブルのカーソルハンドル。
cEnumColumnId	DWORD	in	列挙対象を限定する列ID配列の要素数。0で全列を列挙する。
rgEnumColumnId	JET_ENUMCOLUMNID*	inoptional	列挙対象を限定する列ID配列のポインタ(JET_ENUMCOLUMNID)。NULL可。
pcEnumColumn	DWORD*	out	列挙された列数を受け取る出力ポインタ。
prgEnumColumn	JET_ENUMCOLUMN**	out	列挙結果のJET_ENUMCOLUMN配列を受け取る出力ポインタ。pfnReallocで確保される。
pfnRealloc	JET_PFNREALLOC	in	結果バッファ確保に使うメモリ再割り当てコールバック関数(JET_PFNREALLOC)。
pvReallocContext	void*	inoptional	pfnReallocに渡されるユーザー定義コンテキストポインタ。NULL可。
cbDataMost	DWORD	in	取得する各列データの最大バイト数。0で制限なしとなる。
grbit	DWORD	in	列挙動作を制御するビットフラグ。JET_bitEnumerateCompressOutput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 JetEnumerateColumns(
    JET_SESID sesid,
    JET_TABLEID tableid,
    DWORD cEnumColumnId,
    JET_ENUMCOLUMNID* rgEnumColumnId,   // optional
    DWORD* pcEnumColumn,
    JET_ENUMCOLUMN** prgEnumColumn,
    JET_PFNREALLOC pfnRealloc,
    void* pvReallocContext,   // optional
    DWORD cbDataMost,
    DWORD grbit
);

[DllImport("ESENT.dll", ExactSpelling = true)]
static extern int JetEnumerateColumns(
    UIntPtr sesid,   // JET_SESID
    UIntPtr tableid,   // JET_TABLEID
    uint cEnumColumnId,   // DWORD
    IntPtr rgEnumColumnId,   // JET_ENUMCOLUMNID* optional
    out uint pcEnumColumn,   // DWORD* out
    IntPtr prgEnumColumn,   // JET_ENUMCOLUMN** out
    IntPtr pfnRealloc,   // JET_PFNREALLOC
    IntPtr pvReallocContext,   // void* optional
    uint cbDataMost,   // DWORD
    uint grbit   // DWORD
);

<DllImport("ESENT.dll", ExactSpelling:=True)>
Public Shared Function JetEnumerateColumns(
    sesid As UIntPtr,   ' JET_SESID
    tableid As UIntPtr,   ' JET_TABLEID
    cEnumColumnId As UInteger,   ' DWORD
    rgEnumColumnId As IntPtr,   ' JET_ENUMCOLUMNID* optional
    <Out> ByRef pcEnumColumn As UInteger,   ' DWORD* out
    prgEnumColumn As IntPtr,   ' JET_ENUMCOLUMN** out
    pfnRealloc As IntPtr,   ' JET_PFNREALLOC
    pvReallocContext As IntPtr,   ' void* optional
    cbDataMost As UInteger,   ' DWORD
    grbit As UInteger   ' DWORD
) As Integer
End Function

' sesid : JET_SESID
' tableid : JET_TABLEID
' cEnumColumnId : DWORD
' rgEnumColumnId : JET_ENUMCOLUMNID* optional
' pcEnumColumn : DWORD* out
' prgEnumColumn : JET_ENUMCOLUMN** out
' pfnRealloc : JET_PFNREALLOC
' pvReallocContext : void* optional
' cbDataMost : DWORD
' grbit : DWORD
Declare PtrSafe Function JetEnumerateColumns Lib "esent" ( _
    ByVal sesid As LongPtr, _
    ByVal tableid As LongPtr, _
    ByVal cEnumColumnId As Long, _
    ByVal rgEnumColumnId As LongPtr, _
    ByRef pcEnumColumn As Long, _
    ByVal prgEnumColumn As LongPtr, _
    ByVal pfnRealloc As LongPtr, _
    ByVal pvReallocContext As LongPtr, _
    ByVal cbDataMost 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

JetEnumerateColumns = ctypes.windll.esent.JetEnumerateColumns
JetEnumerateColumns.restype = ctypes.c_int
JetEnumerateColumns.argtypes = [
    ctypes.c_size_t,  # sesid : JET_SESID
    ctypes.c_size_t,  # tableid : JET_TABLEID
    wintypes.DWORD,  # cEnumColumnId : DWORD
    ctypes.c_void_p,  # rgEnumColumnId : JET_ENUMCOLUMNID* optional
    ctypes.POINTER(wintypes.DWORD),  # pcEnumColumn : DWORD* out
    ctypes.c_void_p,  # prgEnumColumn : JET_ENUMCOLUMN** out
    ctypes.c_void_p,  # pfnRealloc : JET_PFNREALLOC
    ctypes.POINTER(None),  # pvReallocContext : void* optional
    wintypes.DWORD,  # cbDataMost : DWORD
    wintypes.DWORD,  # grbit : DWORD
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('ESENT.dll')
JetEnumerateColumns = Fiddle::Function.new(
  lib['JetEnumerateColumns'],
  [
    Fiddle::TYPE_UINTPTR_T,  # sesid : JET_SESID
    Fiddle::TYPE_UINTPTR_T,  # tableid : JET_TABLEID
    -Fiddle::TYPE_INT,  # cEnumColumnId : DWORD
    Fiddle::TYPE_VOIDP,  # rgEnumColumnId : JET_ENUMCOLUMNID* optional
    Fiddle::TYPE_VOIDP,  # pcEnumColumn : DWORD* out
    Fiddle::TYPE_VOIDP,  # prgEnumColumn : JET_ENUMCOLUMN** out
    Fiddle::TYPE_VOIDP,  # pfnRealloc : JET_PFNREALLOC
    Fiddle::TYPE_VOIDP,  # pvReallocContext : void* optional
    -Fiddle::TYPE_INT,  # cbDataMost : DWORD
    -Fiddle::TYPE_INT,  # grbit : DWORD
  ],
  Fiddle::TYPE_INT)

#[link(name = "esent")]
extern "system" {
    fn JetEnumerateColumns(
        sesid: usize,  // JET_SESID
        tableid: usize,  // JET_TABLEID
        cEnumColumnId: u32,  // DWORD
        rgEnumColumnId: *mut JET_ENUMCOLUMNID,  // JET_ENUMCOLUMNID* optional
        pcEnumColumn: *mut u32,  // DWORD* out
        prgEnumColumn: *mut *mut JET_ENUMCOLUMN,  // JET_ENUMCOLUMN** out
        pfnRealloc: *const core::ffi::c_void,  // JET_PFNREALLOC
        pvReallocContext: *mut (),  // void* optional
        cbDataMost: u32,  // DWORD
        grbit: u32  // DWORD
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("ESENT.dll")]
public static extern int JetEnumerateColumns(UIntPtr sesid, UIntPtr tableid, uint cEnumColumnId, IntPtr rgEnumColumnId, out uint pcEnumColumn, IntPtr prgEnumColumn, IntPtr pfnRealloc, IntPtr pvReallocContext, uint cbDataMost, uint grbit);
"@
$api = Add-Type -MemberDefinition $sig -Name 'ESENT_JetEnumerateColumns' -Namespace Win32 -PassThru
# $api::JetEnumerateColumns(sesid, tableid, cEnumColumnId, rgEnumColumnId, pcEnumColumn, prgEnumColumn, pfnRealloc, pvReallocContext, cbDataMost, grbit)

#uselib "ESENT.dll"
#func global JetEnumerateColumns "JetEnumerateColumns" sptr, sptr, sptr, sptr, sptr, sptr, sptr, sptr, sptr, sptr
; JetEnumerateColumns sesid, tableid, cEnumColumnId, varptr(rgEnumColumnId), varptr(pcEnumColumn), varptr(prgEnumColumn), pfnRealloc, pvReallocContext, cbDataMost, grbit   ; 戻り値は stat
; sesid : JET_SESID -> "sptr"
; tableid : JET_TABLEID -> "sptr"
; cEnumColumnId : DWORD -> "sptr"
; rgEnumColumnId : JET_ENUMCOLUMNID* optional -> "sptr"
; pcEnumColumn : DWORD* out -> "sptr"
; prgEnumColumn : JET_ENUMCOLUMN** out -> "sptr"
; pfnRealloc : JET_PFNREALLOC -> "sptr"
; pvReallocContext : void* optional -> "sptr"
; cbDataMost : 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 JetEnumerateColumns "JetEnumerateColumns" sptr, sptr, int, var, var, var, sptr, sptr, int, int
; res = JetEnumerateColumns(sesid, tableid, cEnumColumnId, rgEnumColumnId, pcEnumColumn, prgEnumColumn, pfnRealloc, pvReallocContext, cbDataMost, grbit)
; sesid : JET_SESID -> "sptr"
; tableid : JET_TABLEID -> "sptr"
; cEnumColumnId : DWORD -> "int"
; rgEnumColumnId : JET_ENUMCOLUMNID* optional -> "var"
; pcEnumColumn : DWORD* out -> "var"
; prgEnumColumn : JET_ENUMCOLUMN** out -> "var"
; pfnRealloc : JET_PFNREALLOC -> "sptr"
; pvReallocContext : void* optional -> "sptr"
; cbDataMost : 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。#uselib "ESENT.dll"
#cfunc global JetEnumerateColumns "JetEnumerateColumns" sptr, sptr, int, sptr, sptr, sptr, sptr, sptr, int, int
; res = JetEnumerateColumns(sesid, tableid, cEnumColumnId, varptr(rgEnumColumnId), varptr(pcEnumColumn), varptr(prgEnumColumn), pfnRealloc, pvReallocContext, cbDataMost, grbit)
; sesid : JET_SESID -> "sptr"
; tableid : JET_TABLEID -> "sptr"
; cEnumColumnId : DWORD -> "int"
; rgEnumColumnId : JET_ENUMCOLUMNID* optional -> "sptr"
; pcEnumColumn : DWORD* out -> "sptr"
; prgEnumColumn : JET_ENUMCOLUMN** out -> "sptr"
; pfnRealloc : JET_PFNREALLOC -> "sptr"
; pvReallocContext : void* optional -> "sptr"
; cbDataMost : DWORD -> "int"
; grbit : DWORD -> "int"
; ※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 JetEnumerateColumns(JET_SESID sesid, JET_TABLEID tableid, DWORD cEnumColumnId, JET_ENUMCOLUMNID* rgEnumColumnId, DWORD* pcEnumColumn, JET_ENUMCOLUMN** prgEnumColumn, JET_PFNREALLOC pfnRealloc, void* pvReallocContext, DWORD cbDataMost, DWORD grbit)
#uselib "ESENT.dll"
#cfunc global JetEnumerateColumns "JetEnumerateColumns" intptr, intptr, int, var, var, var, intptr, intptr, int, int
; res = JetEnumerateColumns(sesid, tableid, cEnumColumnId, rgEnumColumnId, pcEnumColumn, prgEnumColumn, pfnRealloc, pvReallocContext, cbDataMost, grbit)
; sesid : JET_SESID -> "intptr"
; tableid : JET_TABLEID -> "intptr"
; cEnumColumnId : DWORD -> "int"
; rgEnumColumnId : JET_ENUMCOLUMNID* optional -> "var"
; pcEnumColumn : DWORD* out -> "var"
; prgEnumColumn : JET_ENUMCOLUMN** out -> "var"
; pfnRealloc : JET_PFNREALLOC -> "intptr"
; pvReallocContext : void* optional -> "intptr"
; cbDataMost : 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。; INT JetEnumerateColumns(JET_SESID sesid, JET_TABLEID tableid, DWORD cEnumColumnId, JET_ENUMCOLUMNID* rgEnumColumnId, DWORD* pcEnumColumn, JET_ENUMCOLUMN** prgEnumColumn, JET_PFNREALLOC pfnRealloc, void* pvReallocContext, DWORD cbDataMost, DWORD grbit)
#uselib "ESENT.dll"
#cfunc global JetEnumerateColumns "JetEnumerateColumns" intptr, intptr, int, intptr, intptr, intptr, intptr, intptr, int, int
; res = JetEnumerateColumns(sesid, tableid, cEnumColumnId, varptr(rgEnumColumnId), varptr(pcEnumColumn), varptr(prgEnumColumn), pfnRealloc, pvReallocContext, cbDataMost, grbit)
; sesid : JET_SESID -> "intptr"
; tableid : JET_TABLEID -> "intptr"
; cEnumColumnId : DWORD -> "int"
; rgEnumColumnId : JET_ENUMCOLUMNID* optional -> "intptr"
; pcEnumColumn : DWORD* out -> "intptr"
; prgEnumColumn : JET_ENUMCOLUMN** out -> "intptr"
; pfnRealloc : JET_PFNREALLOC -> "intptr"
; pvReallocContext : void* optional -> "intptr"
; cbDataMost : DWORD -> "int"
; grbit : DWORD -> "int"
; ※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")
	procJetEnumerateColumns = esent.NewProc("JetEnumerateColumns")
)

// sesid (JET_SESID), tableid (JET_TABLEID), cEnumColumnId (DWORD), rgEnumColumnId (JET_ENUMCOLUMNID* optional), pcEnumColumn (DWORD* out), prgEnumColumn (JET_ENUMCOLUMN** out), pfnRealloc (JET_PFNREALLOC), pvReallocContext (void* optional), cbDataMost (DWORD), grbit (DWORD)
r1, _, err := procJetEnumerateColumns.Call(
	uintptr(sesid),
	uintptr(tableid),
	uintptr(cEnumColumnId),
	uintptr(rgEnumColumnId),
	uintptr(pcEnumColumn),
	uintptr(prgEnumColumn),
	uintptr(pfnRealloc),
	uintptr(pvReallocContext),
	uintptr(cbDataMost),
	uintptr(grbit),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // INT

function JetEnumerateColumns(
  sesid: NativeUInt;   // JET_SESID
  tableid: NativeUInt;   // JET_TABLEID
  cEnumColumnId: DWORD;   // DWORD
  rgEnumColumnId: Pointer;   // JET_ENUMCOLUMNID* optional
  pcEnumColumn: Pointer;   // DWORD* out
  prgEnumColumn: Pointer;   // JET_ENUMCOLUMN** out
  pfnRealloc: Pointer;   // JET_PFNREALLOC
  pvReallocContext: Pointer;   // void* optional
  cbDataMost: DWORD;   // DWORD
  grbit: DWORD   // DWORD
): Integer; stdcall;
  external 'ESENT.dll' name 'JetEnumerateColumns';

result := DllCall("ESENT\JetEnumerateColumns"
    , "UPtr", sesid   ; JET_SESID
    , "UPtr", tableid   ; JET_TABLEID
    , "UInt", cEnumColumnId   ; DWORD
    , "Ptr", rgEnumColumnId   ; JET_ENUMCOLUMNID* optional
    , "Ptr", pcEnumColumn   ; DWORD* out
    , "Ptr", prgEnumColumn   ; JET_ENUMCOLUMN** out
    , "Ptr", pfnRealloc   ; JET_PFNREALLOC
    , "Ptr", pvReallocContext   ; void* optional
    , "UInt", cbDataMost   ; DWORD
    , "UInt", grbit   ; DWORD
    , "Int")   ; return: INT

●JetEnumerateColumns(sesid, tableid, cEnumColumnId, rgEnumColumnId, pcEnumColumn, prgEnumColumn, pfnRealloc, pvReallocContext, cbDataMost, grbit) = DLL("ESENT.dll", "int JetEnumerateColumns(int, int, dword, void*, void*, void*, void*, void*, dword, dword)")
# 呼び出し: JetEnumerateColumns(sesid, tableid, cEnumColumnId, rgEnumColumnId, pcEnumColumn, prgEnumColumn, pfnRealloc, pvReallocContext, cbDataMost, grbit)
# sesid : JET_SESID -> "int"
# tableid : JET_TABLEID -> "int"
# cEnumColumnId : DWORD -> "dword"
# rgEnumColumnId : JET_ENUMCOLUMNID* optional -> "void*"
# pcEnumColumn : DWORD* out -> "void*"
# prgEnumColumn : JET_ENUMCOLUMN** out -> "void*"
# pfnRealloc : JET_PFNREALLOC -> "void*"
# pvReallocContext : void* optional -> "void*"
# cbDataMost : 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 JetEnumerateColumns(
    sesid: usize, // JET_SESID
    tableid: usize, // JET_TABLEID
    cEnumColumnId: u32, // DWORD
    rgEnumColumnId: [*c]JET_ENUMCOLUMNID, // JET_ENUMCOLUMNID* optional
    pcEnumColumn: [*c]u32, // DWORD* out
    prgEnumColumn: [*c][*c]JET_ENUMCOLUMN, // JET_ENUMCOLUMN** out
    pfnRealloc: ?*anyopaque, // JET_PFNREALLOC
    pvReallocContext: ?*anyopaque, // void* optional
    cbDataMost: u32, // DWORD
    grbit: u32 // DWORD
) callconv(std.os.windows.WINAPI) i32;

proc JetEnumerateColumns(
    sesid: uint,  # JET_SESID
    tableid: uint,  # JET_TABLEID
    cEnumColumnId: uint32,  # DWORD
    rgEnumColumnId: ptr JET_ENUMCOLUMNID,  # JET_ENUMCOLUMNID* optional
    pcEnumColumn: ptr uint32,  # DWORD* out
    prgEnumColumn: ptr JET_ENUMCOLUMN,  # JET_ENUMCOLUMN** out
    pfnRealloc: pointer,  # JET_PFNREALLOC
    pvReallocContext: pointer,  # void* optional
    cbDataMost: uint32,  # DWORD
    grbit: uint32  # DWORD
): int32 {.importc: "JetEnumerateColumns", stdcall, dynlib: "ESENT.dll".}

pragma(lib, "esent");
extern(Windows)
int JetEnumerateColumns(
    size_t sesid,   // JET_SESID
    size_t tableid,   // JET_TABLEID
    uint cEnumColumnId,   // DWORD
    JET_ENUMCOLUMNID* rgEnumColumnId,   // JET_ENUMCOLUMNID* optional
    uint* pcEnumColumn,   // DWORD* out
    JET_ENUMCOLUMN** prgEnumColumn,   // JET_ENUMCOLUMN** out
    void* pfnRealloc,   // JET_PFNREALLOC
    void* pvReallocContext,   // void* optional
    uint cbDataMost,   // DWORD
    uint grbit   // DWORD
);

ccall((:JetEnumerateColumns, "ESENT.dll"), stdcall, Int32,
      (Csize_t, Csize_t, UInt32, Ptr{JET_ENUMCOLUMNID}, Ptr{UInt32}, Ptr{JET_ENUMCOLUMN}, Ptr{Cvoid}, Ptr{Cvoid}, UInt32, UInt32),
      sesid, tableid, cEnumColumnId, rgEnumColumnId, pcEnumColumn, prgEnumColumn, pfnRealloc, pvReallocContext, cbDataMost, grbit)
# sesid : JET_SESID -> Csize_t
# tableid : JET_TABLEID -> Csize_t
# cEnumColumnId : DWORD -> UInt32
# rgEnumColumnId : JET_ENUMCOLUMNID* optional -> Ptr{JET_ENUMCOLUMNID}
# pcEnumColumn : DWORD* out -> Ptr{UInt32}
# prgEnumColumn : JET_ENUMCOLUMN** out -> Ptr{JET_ENUMCOLUMN}
# pfnRealloc : JET_PFNREALLOC -> Ptr{Cvoid}
# pvReallocContext : void* optional -> Ptr{Cvoid}
# cbDataMost : 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 JetEnumerateColumns(
    uintptr_t sesid,
    uintptr_t tableid,
    uint32_t cEnumColumnId,
    void* rgEnumColumnId,
    uint32_t* pcEnumColumn,
    void* prgEnumColumn,
    void* pfnRealloc,
    void* pvReallocContext,
    uint32_t cbDataMost,
    uint32_t grbit);
]]
local esent = ffi.load("esent")
-- esent.JetEnumerateColumns(sesid, tableid, cEnumColumnId, rgEnumColumnId, pcEnumColumn, prgEnumColumn, pfnRealloc, pvReallocContext, cbDataMost, grbit)
-- sesid : JET_SESID
-- tableid : JET_TABLEID
-- cEnumColumnId : DWORD
-- rgEnumColumnId : JET_ENUMCOLUMNID* optional
-- pcEnumColumn : DWORD* out
-- prgEnumColumn : JET_ENUMCOLUMN** out
-- pfnRealloc : JET_PFNREALLOC
-- pvReallocContext : void* optional
-- cbDataMost : 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 JetEnumerateColumns = lib.func('__stdcall', 'JetEnumerateColumns', 'int32_t', ['uintptr_t', 'uintptr_t', 'uint32_t', 'void *', 'uint32_t *', 'void *', 'void *', 'void *', 'uint32_t', 'uint32_t']);
// JetEnumerateColumns(sesid, tableid, cEnumColumnId, rgEnumColumnId, pcEnumColumn, prgEnumColumn, pfnRealloc, pvReallocContext, cbDataMost, grbit)
// sesid : JET_SESID -> 'uintptr_t'
// tableid : JET_TABLEID -> 'uintptr_t'
// cEnumColumnId : DWORD -> 'uint32_t'
// rgEnumColumnId : JET_ENUMCOLUMNID* optional -> 'void *'
// pcEnumColumn : DWORD* out -> 'uint32_t *'
// prgEnumColumn : JET_ENUMCOLUMN** out -> 'void *'
// pfnRealloc : JET_PFNREALLOC -> 'void *'
// pvReallocContext : void* optional -> 'void *'
// cbDataMost : 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。
// コールバック(関数ポインタ)は koffi.proto/koffi.register で型を定義して渡す(素の void* では JS 関数を渡せない)。

const lib = Deno.dlopen("ESENT.dll", {
  JetEnumerateColumns: { parameters: ["usize", "usize", "u32", "pointer", "pointer", "pointer", "pointer", "pointer", "u32", "u32"], result: "i32" },
});
// lib.symbols.JetEnumerateColumns(sesid, tableid, cEnumColumnId, rgEnumColumnId, pcEnumColumn, prgEnumColumn, pfnRealloc, pvReallocContext, cbDataMost, grbit)
// sesid : JET_SESID -> "usize"
// tableid : JET_TABLEID -> "usize"
// cEnumColumnId : DWORD -> "u32"
// rgEnumColumnId : JET_ENUMCOLUMNID* optional -> "pointer"
// pcEnumColumn : DWORD* out -> "pointer"
// prgEnumColumn : JET_ENUMCOLUMN** out -> "pointer"
// pfnRealloc : JET_PFNREALLOC -> "pointer"
// pvReallocContext : void* optional -> "pointer"
// cbDataMost : 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 JetEnumerateColumns(
    size_t sesid,
    size_t tableid,
    uint32_t cEnumColumnId,
    void* rgEnumColumnId,
    uint32_t* pcEnumColumn,
    void* prgEnumColumn,
    void* pfnRealloc,
    void* pvReallocContext,
    uint32_t cbDataMost,
    uint32_t grbit);
C, "ESENT.dll");
// $ffi->JetEnumerateColumns(sesid, tableid, cEnumColumnId, rgEnumColumnId, pcEnumColumn, prgEnumColumn, pfnRealloc, pvReallocContext, cbDataMost, grbit);
// sesid : JET_SESID
// tableid : JET_TABLEID
// cEnumColumnId : DWORD
// rgEnumColumnId : JET_ENUMCOLUMNID* optional
// pcEnumColumn : DWORD* out
// prgEnumColumn : JET_ENUMCOLUMN** out
// pfnRealloc : JET_PFNREALLOC
// pvReallocContext : void* optional
// cbDataMost : 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 JetEnumerateColumns(
        long sesid,   // JET_SESID
        long tableid,   // JET_TABLEID
        int cEnumColumnId,   // DWORD
        Pointer rgEnumColumnId,   // JET_ENUMCOLUMNID* optional
        IntByReference pcEnumColumn,   // DWORD* out
        Pointer prgEnumColumn,   // JET_ENUMCOLUMN** out
        Callback pfnRealloc,   // JET_PFNREALLOC
        Pointer pvReallocContext,   // void* optional
        int cbDataMost,   // DWORD
        int grbit   // DWORD
    );
}

@[Link("esent")]
lib LibESENT
  fun JetEnumerateColumns = JetEnumerateColumns(
    sesid : LibC::SizeT,   # JET_SESID
    tableid : LibC::SizeT,   # JET_TABLEID
    cEnumColumnId : UInt32,   # DWORD
    rgEnumColumnId : JET_ENUMCOLUMNID*,   # JET_ENUMCOLUMNID* optional
    pcEnumColumn : UInt32*,   # DWORD* out
    prgEnumColumn : JET_ENUMCOLUMN**,   # JET_ENUMCOLUMN** out
    pfnRealloc : Void*,   # JET_PFNREALLOC
    pvReallocContext : Void*,   # void* optional
    cbDataMost : 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 JetEnumerateColumnsNative = Int32 Function(UintPtr, UintPtr, Uint32, Pointer<Void>, Pointer<Uint32>, Pointer<Void>, Pointer<Void>, Pointer<Void>, Uint32, Uint32);
typedef JetEnumerateColumnsDart = int Function(int, int, int, Pointer<Void>, Pointer<Uint32>, Pointer<Void>, Pointer<Void>, Pointer<Void>, int, int);
final JetEnumerateColumns = DynamicLibrary.open('ESENT.dll')
    .lookupFunction<JetEnumerateColumnsNative, JetEnumerateColumnsDart>('JetEnumerateColumns');
// sesid : JET_SESID -> UintPtr
// tableid : JET_TABLEID -> UintPtr
// cEnumColumnId : DWORD -> Uint32
// rgEnumColumnId : JET_ENUMCOLUMNID* optional -> Pointer<Void>
// pcEnumColumn : DWORD* out -> Pointer<Uint32>
// prgEnumColumn : JET_ENUMCOLUMN** out -> Pointer<Void>
// pfnRealloc : JET_PFNREALLOC -> Pointer<Void>
// pvReallocContext : void* optional -> Pointer<Void>
// cbDataMost : DWORD -> Uint32
// grbit : DWORD -> Uint32
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function JetEnumerateColumns(
  sesid: NativeUInt;   // JET_SESID
  tableid: NativeUInt;   // JET_TABLEID
  cEnumColumnId: DWORD;   // DWORD
  rgEnumColumnId: Pointer;   // JET_ENUMCOLUMNID* optional
  pcEnumColumn: Pointer;   // DWORD* out
  prgEnumColumn: Pointer;   // JET_ENUMCOLUMN** out
  pfnRealloc: Pointer;   // JET_PFNREALLOC
  pvReallocContext: Pointer;   // void* optional
  cbDataMost: DWORD;   // DWORD
  grbit: DWORD   // DWORD
): Integer; stdcall;
  external 'ESENT.dll' name 'JetEnumerateColumns';

import Foreign
import Foreign.C.Types
import Foreign.C.String

foreign import stdcall safe "JetEnumerateColumns"
  c_JetEnumerateColumns :: CUIntPtr -> CUIntPtr -> Word32 -> Ptr () -> Ptr Word32 -> Ptr () -> Ptr () -> Ptr () -> Word32 -> Word32 -> IO Int32
-- sesid : JET_SESID -> CUIntPtr
-- tableid : JET_TABLEID -> CUIntPtr
-- cEnumColumnId : DWORD -> Word32
-- rgEnumColumnId : JET_ENUMCOLUMNID* optional -> Ptr ()
-- pcEnumColumn : DWORD* out -> Ptr Word32
-- prgEnumColumn : JET_ENUMCOLUMN** out -> Ptr ()
-- pfnRealloc : JET_PFNREALLOC -> Ptr ()
-- pvReallocContext : void* optional -> Ptr ()
-- cbDataMost : 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 jetenumeratecolumns =
  foreign "JetEnumerateColumns"
    (size_t @-> size_t @-> uint32_t @-> (ptr void) @-> (ptr uint32_t) @-> (ptr void) @-> (ptr void) @-> (ptr void) @-> uint32_t @-> uint32_t @-> returning int32_t)
(* sesid : JET_SESID -> size_t *)
(* tableid : JET_TABLEID -> size_t *)
(* cEnumColumnId : DWORD -> uint32_t *)
(* rgEnumColumnId : JET_ENUMCOLUMNID* optional -> (ptr void) *)
(* pcEnumColumn : DWORD* out -> (ptr uint32_t) *)
(* prgEnumColumn : JET_ENUMCOLUMN** out -> (ptr void) *)
(* pfnRealloc : JET_PFNREALLOC -> (ptr void) *)
(* pvReallocContext : void* optional -> (ptr void) *)
(* cbDataMost : 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 ("JetEnumerateColumns" jet-enumerate-columns :convention :stdcall) :int32
  (sesid :uint64)   ; JET_SESID
  (tableid :uint64)   ; JET_TABLEID
  (c-enum-column-id :uint32)   ; DWORD
  (rg-enum-column-id :pointer)   ; JET_ENUMCOLUMNID* optional
  (pc-enum-column :pointer)   ; DWORD* out
  (prg-enum-column :pointer)   ; JET_ENUMCOLUMN** out
  (pfn-realloc :pointer)   ; JET_PFNREALLOC
  (pv-realloc-context :pointer)   ; void* optional
  (cb-data-most :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 $JetEnumerateColumns = Win32::API::More->new('ESENT',
    'int JetEnumerateColumns(WPARAM sesid, WPARAM tableid, DWORD cEnumColumnId, LPVOID rgEnumColumnId, LPVOID pcEnumColumn, LPVOID prgEnumColumn, LPVOID pfnRealloc, LPVOID pvReallocContext, DWORD cbDataMost, DWORD grbit)');
# my $ret = $JetEnumerateColumns->Call($sesid, $tableid, $cEnumColumnId, $rgEnumColumnId, $pcEnumColumn, $prgEnumColumn, $pfnRealloc, $pvReallocContext, $cbDataMost, $grbit);
# sesid : JET_SESID -> WPARAM
# tableid : JET_TABLEID -> WPARAM
# cEnumColumnId : DWORD -> DWORD
# rgEnumColumnId : JET_ENUMCOLUMNID* optional -> LPVOID
# pcEnumColumn : DWORD* out -> LPVOID
# prgEnumColumn : JET_ENUMCOLUMN** out -> LPVOID
# pfnRealloc : JET_PFNREALLOC -> LPVOID
# pvReallocContext : void* optional -> LPVOID
# cbDataMost : 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。
# コールバック(関数ポインタ)は Perl sub を直接渡せません。Win32::API::Callback を使用してください。

JetEnumerateColumns

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