CredWriteA

関数

資格情報を資格情報マネージャーに保存する。

DLLADVAPI32.dll文字セットANSI (-A)呼出規約winapiSetLastErrorあり対応OSWindows XP 以降

シグネチャ

// ADVAPI32.dll  (ANSI / -A)
#include <windows.h>

BOOL CredWriteA(
    CREDENTIALA* Credential,
    DWORD Flags
);

パラメーター

名前	型	方向
Credential	CREDENTIALA*	in
Flags	DWORD	in

戻り値の型: BOOL

各言語での呼び出し定義

// ADVAPI32.dll  (ANSI / -A)
#include <windows.h>

BOOL CredWriteA(
    CREDENTIALA* Credential,
    DWORD Flags
);

[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("ADVAPI32.dll", CharSet = CharSet.Ansi, SetLastError = true, ExactSpelling = true)]
static extern bool CredWriteA(
    IntPtr Credential,   // CREDENTIALA*
    uint Flags   // DWORD
);

<DllImport("ADVAPI32.dll", CharSet:=CharSet.Ansi, SetLastError:=True, ExactSpelling:=True)>
Public Shared Function CredWriteA(
    Credential As IntPtr,   ' CREDENTIALA*
    Flags As UInteger   ' DWORD
) As Boolean
End Function

' Credential : CREDENTIALA*
' Flags : DWORD
Declare PtrSafe Function CredWriteA Lib "advapi32" ( _
    ByVal Credential As LongPtr, _
    ByVal Flags 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

CredWriteA = ctypes.windll.advapi32.CredWriteA
CredWriteA.restype = wintypes.BOOL
CredWriteA.argtypes = [
    ctypes.c_void_p,  # Credential : CREDENTIALA*
    wintypes.DWORD,  # Flags : DWORD
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('ADVAPI32.dll')
CredWriteA = Fiddle::Function.new(
  lib['CredWriteA'],
  [
    Fiddle::TYPE_VOIDP,  # Credential : CREDENTIALA*
    -Fiddle::TYPE_INT,  # Flags : DWORD
  ],
  Fiddle::TYPE_INT)

#[link(name = "advapi32")]
extern "system" {
    fn CredWriteA(
        Credential: *mut CREDENTIALA,  // CREDENTIALA*
        Flags: u32  // DWORD
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("ADVAPI32.dll", CharSet = CharSet.Ansi, SetLastError = true)]
public static extern bool CredWriteA(IntPtr Credential, uint Flags);
"@
$api = Add-Type -MemberDefinition $sig -Name 'ADVAPI32_CredWriteA' -Namespace Win32 -PassThru
# $api::CredWriteA(Credential, Flags)

#uselib "ADVAPI32.dll"
#func global CredWriteA "CredWriteA" sptr, sptr
; CredWriteA varptr(Credential), Flags   ; 戻り値は stat
; Credential : CREDENTIALA* -> "sptr"
; Flags : 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 "ADVAPI32.dll"
#cfunc global CredWriteA "CredWriteA" var, int
; res = CredWriteA(Credential, Flags)
; Credential : CREDENTIALA* -> "var"
; Flags : 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 "ADVAPI32.dll"
#cfunc global CredWriteA "CredWriteA" sptr, int
; res = CredWriteA(varptr(Credential), Flags)
; Credential : CREDENTIALA* -> "sptr"
; Flags : 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:

; BOOL CredWriteA(CREDENTIALA* Credential, DWORD Flags)
#uselib "ADVAPI32.dll"
#cfunc global CredWriteA "CredWriteA" var, int
; res = CredWriteA(Credential, Flags)
; Credential : CREDENTIALA* -> "var"
; Flags : 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。; BOOL CredWriteA(CREDENTIALA* Credential, DWORD Flags)
#uselib "ADVAPI32.dll"
#cfunc global CredWriteA "CredWriteA" intptr, int
; res = CredWriteA(varptr(Credential), Flags)
; Credential : CREDENTIALA* -> "intptr"
; Flags : 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 (
	advapi32 = windows.NewLazySystemDLL("ADVAPI32.dll")
	procCredWriteA = advapi32.NewProc("CredWriteA")
)

// Credential (CREDENTIALA*), Flags (DWORD)
r1, _, err := procCredWriteA.Call(
	uintptr(Credential),
	uintptr(Flags),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function CredWriteA(
  Credential: Pointer;   // CREDENTIALA*
  Flags: DWORD   // DWORD
): BOOL; stdcall;
  external 'ADVAPI32.dll' name 'CredWriteA';

result := DllCall("ADVAPI32\CredWriteA"
    , "Ptr", Credential   ; CREDENTIALA*
    , "UInt", Flags   ; DWORD
    , "Int")   ; return: BOOL

●CredWriteA(Credential, Flags) = DLL("ADVAPI32.dll", "bool CredWriteA(void*, dword)")
# 呼び出し: CredWriteA(Credential, Flags)
# Credential : CREDENTIALA* -> "void*"
# Flags : 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)。