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
sesid	JET_SESID	in
tableid	JET_TABLEID	in
cEnumColumnId	DWORD	in
rgEnumColumnId	JET_ENUMCOLUMNID*	inoptional
pcEnumColumn	DWORD*	out
prgEnumColumn	JET_ENUMCOLUMN**	out
pfnRealloc	JET_PFNREALLOC	in
pvReallocContext	void*	inoptional
cbDataMost	DWORD	in
grbit	DWORD	in

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)。