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JetGetColumnInfoA

関数
テーブル名と列名から列の定義情報を取得する(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 JetGetColumnInfoA(
    JET_SESID sesid,
    DWORD dbid,
    CHAR* szTableName,
    CHAR* pColumnNameOrId,   // optional
    void* pvResult,
    DWORD cbMax,
    DWORD InfoLevel
);

パラメーター

名前型方向説明
sesidJET_SESIDin操作に使用するセッションID。
dbidDWORDin対象テーブルを含むデータベースのID。
szTableNameCHAR*in対象テーブル名を指すANSI文字列。
pColumnNameOrIdCHAR*inoptional情報取得対象の列名またはJET_COLUMNIDを指すANSI文字列。
pvResultvoid*out取得した列情報を受け取る出力バッファへのポインタ。
cbMaxDWORDinpvResultバッファのバイトサイズ。
InfoLevelDWORDin取得する情報レベル(JET_ColInfo系定数)。

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

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

lib = Fiddle.dlopen('ESENT.dll')
JetGetColumnInfoA = Fiddle::Function.new(
  lib['JetGetColumnInfoA'],
  [
    Fiddle::TYPE_UINTPTR_T,  # sesid : JET_SESID
    -Fiddle::TYPE_INT,  # dbid : DWORD
    Fiddle::TYPE_VOIDP,  # szTableName : CHAR*
    Fiddle::TYPE_VOIDP,  # pColumnNameOrId : CHAR* optional
    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 JetGetColumnInfoA(
        sesid: usize,  // JET_SESID
        dbid: u32,  // DWORD
        szTableName: *mut i8,  // CHAR*
        pColumnNameOrId: *mut i8,  // CHAR* optional
        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 JetGetColumnInfoA(UIntPtr sesid, uint dbid, IntPtr szTableName, IntPtr pColumnNameOrId, IntPtr pvResult, uint cbMax, uint InfoLevel);
"@
$api = Add-Type -MemberDefinition $sig -Name 'ESENT_JetGetColumnInfoA' -Namespace Win32 -PassThru
# $api::JetGetColumnInfoA(sesid, dbid, szTableName, pColumnNameOrId, pvResult, cbMax, InfoLevel)
#uselib "ESENT.dll"
#func global JetGetColumnInfoA "JetGetColumnInfoA" sptr, sptr, sptr, sptr, sptr, sptr, sptr
; JetGetColumnInfoA sesid, dbid, varptr(szTableName), varptr(pColumnNameOrId), pvResult, cbMax, InfoLevel   ; 戻り値は stat
; sesid : JET_SESID -> "sptr"
; dbid : DWORD -> "sptr"
; szTableName : CHAR* -> "sptr"
; pColumnNameOrId : CHAR* optional -> "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。
出力引数: 
#uselib "ESENT.dll"
#cfunc global JetGetColumnInfoA "JetGetColumnInfoA" sptr, int, var, var, sptr, int, int
; res = JetGetColumnInfoA(sesid, dbid, szTableName, pColumnNameOrId, pvResult, cbMax, InfoLevel)
; sesid : JET_SESID -> "sptr"
; dbid : DWORD -> "int"
; szTableName : CHAR* -> "var"
; pColumnNameOrId : CHAR* optional -> "var"
; pvResult : void* out -> "sptr"
; cbMax : DWORD -> "int"
; InfoLevel : 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 JetGetColumnInfoA(JET_SESID sesid, DWORD dbid, CHAR* szTableName, CHAR* pColumnNameOrId, void* pvResult, DWORD cbMax, DWORD InfoLevel)
#uselib "ESENT.dll"
#cfunc global JetGetColumnInfoA "JetGetColumnInfoA" intptr, int, var, var, intptr, int, int
; res = JetGetColumnInfoA(sesid, dbid, szTableName, pColumnNameOrId, pvResult, cbMax, InfoLevel)
; sesid : JET_SESID -> "intptr"
; dbid : DWORD -> "int"
; szTableName : CHAR* -> "var"
; pColumnNameOrId : CHAR* optional -> "var"
; pvResult : void* out -> "intptr"
; cbMax : DWORD -> "int"
; InfoLevel : 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")
	procJetGetColumnInfoA = esent.NewProc("JetGetColumnInfoA")
)

// sesid (JET_SESID), dbid (DWORD), szTableName (CHAR*), pColumnNameOrId (CHAR* optional), pvResult (void* out), cbMax (DWORD), InfoLevel (DWORD)
r1, _, err := procJetGetColumnInfoA.Call(
	uintptr(sesid),
	uintptr(dbid),
	uintptr(szTableName),
	uintptr(pColumnNameOrId),
	uintptr(pvResult),
	uintptr(cbMax),
	uintptr(InfoLevel),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // INT
function JetGetColumnInfoA(
  sesid: NativeUInt;   // JET_SESID
  dbid: DWORD;   // DWORD
  szTableName: Pointer;   // CHAR*
  pColumnNameOrId: Pointer;   // CHAR* optional
  pvResult: Pointer;   // void* out
  cbMax: DWORD;   // DWORD
  InfoLevel: DWORD   // DWORD
): Integer; stdcall;
  external 'ESENT.dll' name 'JetGetColumnInfoA';
result := DllCall("ESENT\JetGetColumnInfoA"
    , "UPtr", sesid   ; JET_SESID
    , "UInt", dbid   ; DWORD
    , "Ptr", szTableName   ; CHAR*
    , "Ptr", pColumnNameOrId   ; CHAR* optional
    , "Ptr", pvResult   ; void* out
    , "UInt", cbMax   ; DWORD
    , "UInt", InfoLevel   ; DWORD
    , "Int")   ; return: INT
●JetGetColumnInfoA(sesid, dbid, szTableName, pColumnNameOrId, pvResult, cbMax, InfoLevel) = DLL("ESENT.dll", "int JetGetColumnInfoA(int, dword, void*, void*, void*, dword, dword)")
# 呼び出し: JetGetColumnInfoA(sesid, dbid, szTableName, pColumnNameOrId, pvResult, cbMax, InfoLevel)
# sesid : JET_SESID -> "int"
# dbid : DWORD -> "dword"
# szTableName : CHAR* -> "void*"
# pColumnNameOrId : CHAR* optional -> "void*"
# 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 JetGetColumnInfoA(
    sesid: usize, // JET_SESID
    dbid: u32, // DWORD
    szTableName: [*c]i8, // CHAR*
    pColumnNameOrId: [*c]i8, // CHAR* optional
    pvResult: ?*anyopaque, // void* out
    cbMax: u32, // DWORD
    InfoLevel: u32 // DWORD
) callconv(std.os.windows.WINAPI) i32;
proc JetGetColumnInfoA(
    sesid: uint,  # JET_SESID
    dbid: uint32,  # DWORD
    szTableName: ptr int8,  # CHAR*
    pColumnNameOrId: ptr int8,  # CHAR* optional
    pvResult: pointer,  # void* out
    cbMax: uint32,  # DWORD
    InfoLevel: uint32  # DWORD
): int32 {.importc: "JetGetColumnInfoA", stdcall, dynlib: "ESENT.dll".}
pragma(lib, "esent");
extern(Windows)
int JetGetColumnInfoA(
    size_t sesid,   // JET_SESID
    uint dbid,   // DWORD
    byte* szTableName,   // CHAR*
    byte* pColumnNameOrId,   // CHAR* optional
    void* pvResult,   // void* out
    uint cbMax,   // DWORD
    uint InfoLevel   // DWORD
);
ccall((:JetGetColumnInfoA, "ESENT.dll"), stdcall, Int32,
      (Csize_t, UInt32, Ptr{Int8}, Ptr{Int8}, Ptr{Cvoid}, UInt32, UInt32),
      sesid, dbid, szTableName, pColumnNameOrId, pvResult, cbMax, InfoLevel)
# sesid : JET_SESID -> Csize_t
# dbid : DWORD -> UInt32
# szTableName : CHAR* -> Ptr{Int8}
# pColumnNameOrId : CHAR* optional -> Ptr{Int8}
# 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 JetGetColumnInfoA(
    uintptr_t sesid,
    uint32_t dbid,
    int8_t* szTableName,
    int8_t* pColumnNameOrId,
    void* pvResult,
    uint32_t cbMax,
    uint32_t InfoLevel);
]]
local esent = ffi.load("esent")
-- esent.JetGetColumnInfoA(sesid, dbid, szTableName, pColumnNameOrId, pvResult, cbMax, InfoLevel)
-- sesid : JET_SESID
-- dbid : DWORD
-- szTableName : CHAR*
-- pColumnNameOrId : CHAR* optional
-- 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 JetGetColumnInfoA = lib.func('__stdcall', 'JetGetColumnInfoA', 'int32_t', ['uintptr_t', 'uint32_t', 'int8_t *', 'int8_t *', 'void *', 'uint32_t', 'uint32_t']);
// JetGetColumnInfoA(sesid, dbid, szTableName, pColumnNameOrId, pvResult, cbMax, InfoLevel)
// sesid : JET_SESID -> 'uintptr_t'
// dbid : DWORD -> 'uint32_t'
// szTableName : CHAR* -> 'int8_t *'
// pColumnNameOrId : CHAR* optional -> 'int8_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", {
  JetGetColumnInfoA: { parameters: ["usize", "u32", "pointer", "pointer", "pointer", "u32", "u32"], result: "i32" },
});
// lib.symbols.JetGetColumnInfoA(sesid, dbid, szTableName, pColumnNameOrId, pvResult, cbMax, InfoLevel)
// sesid : JET_SESID -> "usize"
// dbid : DWORD -> "u32"
// szTableName : CHAR* -> "pointer"
// pColumnNameOrId : CHAR* optional -> "pointer"
// 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 JetGetColumnInfoA(
    size_t sesid,
    uint32_t dbid,
    int8_t* szTableName,
    int8_t* pColumnNameOrId,
    void* pvResult,
    uint32_t cbMax,
    uint32_t InfoLevel);
C, "ESENT.dll");
// $ffi->JetGetColumnInfoA(sesid, dbid, szTableName, pColumnNameOrId, pvResult, cbMax, InfoLevel);
// sesid : JET_SESID
// dbid : DWORD
// szTableName : CHAR*
// pColumnNameOrId : CHAR* optional
// 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 JetGetColumnInfoA(
        long sesid,   // JET_SESID
        int dbid,   // DWORD
        byte[] szTableName,   // CHAR*
        byte[] pColumnNameOrId,   // CHAR* optional
        Pointer pvResult,   // void* out
        int cbMax,   // DWORD
        int InfoLevel   // DWORD
    );
}
@[Link("esent")]
lib LibESENT
  fun JetGetColumnInfoA = JetGetColumnInfoA(
    sesid : LibC::SizeT,   # JET_SESID
    dbid : UInt32,   # DWORD
    szTableName : Int8*,   # CHAR*
    pColumnNameOrId : Int8*,   # CHAR* optional
    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 JetGetColumnInfoANative = Int32 Function(UintPtr, Uint32, Pointer<Int8>, Pointer<Int8>, Pointer<Void>, Uint32, Uint32);
typedef JetGetColumnInfoADart = int Function(int, int, Pointer<Int8>, Pointer<Int8>, Pointer<Void>, int, int);
final JetGetColumnInfoA = DynamicLibrary.open('ESENT.dll')
    .lookupFunction<JetGetColumnInfoANative, JetGetColumnInfoADart>('JetGetColumnInfoA');
// sesid : JET_SESID -> UintPtr
// dbid : DWORD -> Uint32
// szTableName : CHAR* -> Pointer<Int8>
// pColumnNameOrId : CHAR* optional -> Pointer<Int8>
// 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 JetGetColumnInfoA(
  sesid: NativeUInt;   // JET_SESID
  dbid: DWORD;   // DWORD
  szTableName: Pointer;   // CHAR*
  pColumnNameOrId: Pointer;   // CHAR* optional
  pvResult: Pointer;   // void* out
  cbMax: DWORD;   // DWORD
  InfoLevel: DWORD   // DWORD
): Integer; stdcall;
  external 'ESENT.dll' name 'JetGetColumnInfoA';
import Foreign
import Foreign.C.Types
import Foreign.C.String

foreign import stdcall safe "JetGetColumnInfoA"
  c_JetGetColumnInfoA :: CUIntPtr -> Word32 -> Ptr Int8 -> Ptr Int8 -> Ptr () -> Word32 -> Word32 -> IO Int32
-- sesid : JET_SESID -> CUIntPtr
-- dbid : DWORD -> Word32
-- szTableName : CHAR* -> Ptr Int8
-- pColumnNameOrId : CHAR* optional -> Ptr Int8
-- 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 jetgetcolumninfoa =
  foreign "JetGetColumnInfoA"
    (size_t @-> uint32_t @-> (ptr int8_t) @-> (ptr int8_t) @-> (ptr void) @-> uint32_t @-> uint32_t @-> returning int32_t)
(* sesid : JET_SESID -> size_t *)
(* dbid : DWORD -> uint32_t *)
(* szTableName : CHAR* -> (ptr int8_t) *)
(* pColumnNameOrId : CHAR* optional -> (ptr int8_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 ("JetGetColumnInfoA" jet-get-column-info-a :convention :stdcall) :int32
  (sesid :uint64)   ; JET_SESID
  (dbid :uint32)   ; DWORD
  (sz-table-name :pointer)   ; CHAR*
  (p-column-name-or-id :pointer)   ; CHAR* optional
  (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 $JetGetColumnInfoA = Win32::API::More->new('ESENT',
    'int JetGetColumnInfoA(WPARAM sesid, DWORD dbid, LPVOID szTableName, LPVOID pColumnNameOrId, LPVOID pvResult, DWORD cbMax, DWORD InfoLevel)');
# my $ret = $JetGetColumnInfoA->Call($sesid, $dbid, $szTableName, $pColumnNameOrId, $pvResult, $cbMax, $InfoLevel);
# sesid : JET_SESID -> WPARAM
# dbid : DWORD -> DWORD
# szTableName : CHAR* -> LPVOID
# pColumnNameOrId : CHAR* optional -> LPVOID
# 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。

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