ホーム › Security.Cryptography › CertFreeCertificateContext

CertFreeCertificateContext

関数

証明書コンテキストを解放する。

DLLCRYPT32.dll呼出規約winapi対応OSWindows XP 以降

シグネチャ

// CRYPT32.dll
#include <windows.h>

BOOL CertFreeCertificateContext(
    const CERT_CONTEXT* pCertContext   // optional
);

パラメーター

名前	型	方向
pCertContext	CERT_CONTEXT*	inoptional

戻り値の型: BOOL

各言語での呼び出し定義

// CRYPT32.dll
#include <windows.h>

BOOL CertFreeCertificateContext(
    const CERT_CONTEXT* pCertContext   // optional
);

[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("CRYPT32.dll", ExactSpelling = true)]
static extern bool CertFreeCertificateContext(
    IntPtr pCertContext   // CERT_CONTEXT* optional
);

<DllImport("CRYPT32.dll", ExactSpelling:=True)>
Public Shared Function CertFreeCertificateContext(
    pCertContext As IntPtr   ' CERT_CONTEXT* optional
) As Boolean
End Function

' pCertContext : CERT_CONTEXT* optional
Declare PtrSafe Function CertFreeCertificateContext Lib "crypt32" ( _
    ByVal pCertContext 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

CertFreeCertificateContext = ctypes.windll.crypt32.CertFreeCertificateContext
CertFreeCertificateContext.restype = wintypes.BOOL
CertFreeCertificateContext.argtypes = [
    ctypes.c_void_p,  # pCertContext : CERT_CONTEXT* optional
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('CRYPT32.dll')
CertFreeCertificateContext = Fiddle::Function.new(
  lib['CertFreeCertificateContext'],
  [
    Fiddle::TYPE_VOIDP,  # pCertContext : CERT_CONTEXT* optional
  ],
  Fiddle::TYPE_INT)

#[link(name = "crypt32")]
extern "system" {
    fn CertFreeCertificateContext(
        pCertContext: *const CERT_CONTEXT  // CERT_CONTEXT* optional
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("CRYPT32.dll")]
public static extern bool CertFreeCertificateContext(IntPtr pCertContext);
"@
$api = Add-Type -MemberDefinition $sig -Name 'CRYPT32_CertFreeCertificateContext' -Namespace Win32 -PassThru
# $api::CertFreeCertificateContext(pCertContext)

#uselib "CRYPT32.dll"
#func global CertFreeCertificateContext "CertFreeCertificateContext" sptr
; CertFreeCertificateContext varptr(pCertContext)   ; 戻り値は stat
; pCertContext : CERT_CONTEXT* 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 "CRYPT32.dll"
#cfunc global CertFreeCertificateContext "CertFreeCertificateContext" var
; res = CertFreeCertificateContext(pCertContext)
; pCertContext : CERT_CONTEXT* optional -> "var"
; ※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 "CRYPT32.dll"
#cfunc global CertFreeCertificateContext "CertFreeCertificateContext" sptr
; res = CertFreeCertificateContext(varptr(pCertContext))
; pCertContext : CERT_CONTEXT* 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:

; BOOL CertFreeCertificateContext(CERT_CONTEXT* pCertContext)
#uselib "CRYPT32.dll"
#cfunc global CertFreeCertificateContext "CertFreeCertificateContext" var
; res = CertFreeCertificateContext(pCertContext)
; pCertContext : CERT_CONTEXT* optional -> "var"
; ※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 CertFreeCertificateContext(CERT_CONTEXT* pCertContext)
#uselib "CRYPT32.dll"
#cfunc global CertFreeCertificateContext "CertFreeCertificateContext" intptr
; res = CertFreeCertificateContext(varptr(pCertContext))
; pCertContext : CERT_CONTEXT* 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 (
	crypt32 = windows.NewLazySystemDLL("CRYPT32.dll")
	procCertFreeCertificateContext = crypt32.NewProc("CertFreeCertificateContext")
)

// pCertContext (CERT_CONTEXT* optional)
r1, _, err := procCertFreeCertificateContext.Call(
	uintptr(pCertContext),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function CertFreeCertificateContext(
  pCertContext: Pointer   // CERT_CONTEXT* optional
): BOOL; stdcall;
  external 'CRYPT32.dll' name 'CertFreeCertificateContext';

result := DllCall("CRYPT32\CertFreeCertificateContext"
    , "Ptr", pCertContext   ; CERT_CONTEXT* optional
    , "Int")   ; return: BOOL

●CertFreeCertificateContext(pCertContext) = DLL("CRYPT32.dll", "bool CertFreeCertificateContext(void*)")
# 呼び出し: CertFreeCertificateContext(pCertContext)
# pCertContext : CERT_CONTEXT* 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)。