JetRestoreA

関数

バックアップからデータベースを復元する(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 JetRestoreA(
    CHAR* szSource,
    JET_PFNSTATUS pfn   // optional
);

パラメーター

名前	型	方向
szSource	CHAR*	in
pfn	JET_PFNSTATUS	inoptional

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 JetRestoreA(
    CHAR* szSource,
    JET_PFNSTATUS pfn   // optional
);

[DllImport("ESENT.dll", CharSet = CharSet.Ansi, ExactSpelling = true)]
static extern int JetRestoreA(
    IntPtr szSource,   // CHAR*
    IntPtr pfn   // JET_PFNSTATUS optional
);

<DllImport("ESENT.dll", CharSet:=CharSet.Ansi, ExactSpelling:=True)>
Public Shared Function JetRestoreA(
    szSource As IntPtr,   ' CHAR*
    pfn As IntPtr   ' JET_PFNSTATUS optional
) As Integer
End Function

' szSource : CHAR*
' pfn : JET_PFNSTATUS optional
Declare PtrSafe Function JetRestoreA Lib "esent" ( _
    ByVal szSource As LongPtr, _
    ByVal pfn As LongPtr) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

JetRestoreA = ctypes.windll.esent.JetRestoreA
JetRestoreA.restype = ctypes.c_int
JetRestoreA.argtypes = [
    ctypes.POINTER(ctypes.c_byte),  # szSource : CHAR*
    ctypes.c_void_p,  # pfn : JET_PFNSTATUS optional
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('ESENT.dll')
JetRestoreA = Fiddle::Function.new(
  lib['JetRestoreA'],
  [
    Fiddle::TYPE_VOIDP,  # szSource : CHAR*
    Fiddle::TYPE_VOIDP,  # pfn : JET_PFNSTATUS optional
  ],
  Fiddle::TYPE_INT)

#[link(name = "esent")]
extern "system" {
    fn JetRestoreA(
        szSource: *mut i8,  // CHAR*
        pfn: *const core::ffi::c_void  // JET_PFNSTATUS optional
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("ESENT.dll", CharSet = CharSet.Ansi)]
public static extern int JetRestoreA(IntPtr szSource, IntPtr pfn);
"@
$api = Add-Type -MemberDefinition $sig -Name 'ESENT_JetRestoreA' -Namespace Win32 -PassThru
# $api::JetRestoreA(szSource, pfn)

#uselib "ESENT.dll"
#func global JetRestoreA "JetRestoreA" sptr, sptr
; JetRestoreA varptr(szSource), pfn   ; 戻り値は stat
; szSource : CHAR* -> "sptr"
; pfn : JET_PFNSTATUS optional -> "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 JetRestoreA "JetRestoreA" var, sptr
; res = JetRestoreA(szSource, pfn)
; szSource : CHAR* -> "var"
; pfn : JET_PFNSTATUS optional -> "sptr"
; ※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 JetRestoreA "JetRestoreA" sptr, sptr
; res = JetRestoreA(varptr(szSource), pfn)
; szSource : CHAR* -> "sptr"
; pfn : JET_PFNSTATUS optional -> "sptr"
; ※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 JetRestoreA(CHAR* szSource, JET_PFNSTATUS pfn)
#uselib "ESENT.dll"
#cfunc global JetRestoreA "JetRestoreA" var, intptr
; res = JetRestoreA(szSource, pfn)
; szSource : CHAR* -> "var"
; pfn : JET_PFNSTATUS optional -> "intptr"
; ※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 JetRestoreA(CHAR* szSource, JET_PFNSTATUS pfn)
#uselib "ESENT.dll"
#cfunc global JetRestoreA "JetRestoreA" intptr, intptr
; res = JetRestoreA(varptr(szSource), pfn)
; szSource : CHAR* -> "intptr"
; pfn : JET_PFNSTATUS optional -> "intptr"
; ※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")
	procJetRestoreA = esent.NewProc("JetRestoreA")
)

// szSource (CHAR*), pfn (JET_PFNSTATUS optional)
r1, _, err := procJetRestoreA.Call(
	uintptr(szSource),
	uintptr(pfn),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // INT

function JetRestoreA(
  szSource: Pointer;   // CHAR*
  pfn: Pointer   // JET_PFNSTATUS optional
): Integer; stdcall;
  external 'ESENT.dll' name 'JetRestoreA';

result := DllCall("ESENT\JetRestoreA"
    , "Ptr", szSource   ; CHAR*
    , "Ptr", pfn   ; JET_PFNSTATUS optional
    , "Int")   ; return: INT

●JetRestoreA(szSource, pfn) = DLL("ESENT.dll", "int JetRestoreA(void*, void*)")
# 呼び出し: JetRestoreA(szSource, pfn)
# szSource : CHAR* -> "void*"
# pfn : JET_PFNSTATUS optional -> "void*"
# 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)。