CertGetSubjectCertificateFromStore

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

CERT_CONTEXT* CertGetSubjectCertificateFromStore(
    HCERTSTORE hCertStore,
    CERT_QUERY_ENCODING_TYPE dwCertEncodingType,
    CERT_INFO* pCertId
);

<DllImport("CRYPT32.dll", SetLastError:=True, ExactSpelling:=True)>
Public Shared Function CertGetSubjectCertificateFromStore(
    hCertStore As IntPtr,   ' HCERTSTORE
    dwCertEncodingType As UInteger,   ' CERT_QUERY_ENCODING_TYPE
    pCertId As IntPtr   ' CERT_INFO*
) As IntPtr
End Function

' hCertStore : HCERTSTORE
' dwCertEncodingType : CERT_QUERY_ENCODING_TYPE
' pCertId : CERT_INFO*
Declare PtrSafe Function CertGetSubjectCertificateFromStore Lib "crypt32" ( _
    ByVal hCertStore As LongPtr, _
    ByVal dwCertEncodingType As Long, _
    ByVal pCertId As LongPtr) As LongPtr
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

CertGetSubjectCertificateFromStore = ctypes.windll.crypt32.CertGetSubjectCertificateFromStore
CertGetSubjectCertificateFromStore.restype = ctypes.c_void_p
CertGetSubjectCertificateFromStore.argtypes = [
    wintypes.HANDLE,  # hCertStore : HCERTSTORE
    wintypes.DWORD,  # dwCertEncodingType : CERT_QUERY_ENCODING_TYPE
    ctypes.c_void_p,  # pCertId : CERT_INFO*
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('CRYPT32.dll')
CertGetSubjectCertificateFromStore = Fiddle::Function.new(
  lib['CertGetSubjectCertificateFromStore'],
  [
    Fiddle::TYPE_VOIDP,  # hCertStore : HCERTSTORE
    -Fiddle::TYPE_INT,  # dwCertEncodingType : CERT_QUERY_ENCODING_TYPE
    Fiddle::TYPE_VOIDP,  # pCertId : CERT_INFO*
  ],
  Fiddle::TYPE_VOIDP)

#[link(name = "crypt32")]
extern "system" {
    fn CertGetSubjectCertificateFromStore(
        hCertStore: *mut core::ffi::c_void,  // HCERTSTORE
        dwCertEncodingType: u32,  // CERT_QUERY_ENCODING_TYPE
        pCertId: *mut CERT_INFO  // CERT_INFO*
    ) -> *mut CERT_CONTEXT;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("CRYPT32.dll", SetLastError = true)]
public static extern IntPtr CertGetSubjectCertificateFromStore(IntPtr hCertStore, uint dwCertEncodingType, IntPtr pCertId);
"@
$api = Add-Type -MemberDefinition $sig -Name 'CRYPT32_CertGetSubjectCertificateFromStore' -Namespace Win32 -PassThru
# $api::CertGetSubjectCertificateFromStore(hCertStore, dwCertEncodingType, pCertId)

#uselib "CRYPT32.dll"
#func global CertGetSubjectCertificateFromStore "CertGetSubjectCertificateFromStore" sptr, sptr, sptr
; CertGetSubjectCertificateFromStore hCertStore, dwCertEncodingType, varptr(pCertId)   ; 戻り値は stat
; hCertStore : HCERTSTORE -> "sptr"
; dwCertEncodingType : CERT_QUERY_ENCODING_TYPE -> "sptr"
; pCertId : CERT_INFO* -> "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。

#uselib "CRYPT32.dll"
#cfunc global CertGetSubjectCertificateFromStore "CertGetSubjectCertificateFromStore" sptr, int, var
; res = CertGetSubjectCertificateFromStore(hCertStore, dwCertEncodingType, pCertId)
; hCertStore : HCERTSTORE -> "sptr"
; dwCertEncodingType : CERT_QUERY_ENCODING_TYPE -> "int"
; pCertId : CERT_INFO* -> "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。

; CERT_CONTEXT* CertGetSubjectCertificateFromStore(HCERTSTORE hCertStore, CERT_QUERY_ENCODING_TYPE dwCertEncodingType, CERT_INFO* pCertId)
#uselib "CRYPT32.dll"
#cfunc global CertGetSubjectCertificateFromStore "CertGetSubjectCertificateFromStore" intptr, int, var
; res = CertGetSubjectCertificateFromStore(hCertStore, dwCertEncodingType, pCertId)
; hCertStore : HCERTSTORE -> "intptr"
; dwCertEncodingType : CERT_QUERY_ENCODING_TYPE -> "int"
; pCertId : CERT_INFO* -> "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。

import (
	"golang.org/x/sys/windows"
	"unsafe"
)

var (
	crypt32 = windows.NewLazySystemDLL("CRYPT32.dll")
	procCertGetSubjectCertificateFromStore = crypt32.NewProc("CertGetSubjectCertificateFromStore")
)

// hCertStore (HCERTSTORE), dwCertEncodingType (CERT_QUERY_ENCODING_TYPE), pCertId (CERT_INFO*)
r1, _, err := procCertGetSubjectCertificateFromStore.Call(
	uintptr(hCertStore),
	uintptr(dwCertEncodingType),
	uintptr(pCertId),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // CERT_CONTEXT*

function CertGetSubjectCertificateFromStore(
  hCertStore: THandle;   // HCERTSTORE
  dwCertEncodingType: DWORD;   // CERT_QUERY_ENCODING_TYPE
  pCertId: Pointer   // CERT_INFO*
): Pointer; stdcall;
  external 'CRYPT32.dll' name 'CertGetSubjectCertificateFromStore';

result := DllCall("CRYPT32\CertGetSubjectCertificateFromStore"
    , "Ptr", hCertStore   ; HCERTSTORE
    , "UInt", dwCertEncodingType   ; CERT_QUERY_ENCODING_TYPE
    , "Ptr", pCertId   ; CERT_INFO*
    , "Ptr")   ; return: CERT_CONTEXT*

●CertGetSubjectCertificateFromStore(hCertStore, dwCertEncodingType, pCertId) = DLL("CRYPT32.dll", "void* CertGetSubjectCertificateFromStore(void*, dword, void*)")
# 呼び出し: CertGetSubjectCertificateFromStore(hCertStore, dwCertEncodingType, pCertId)
# hCertStore : HCERTSTORE -> "void*"
# dwCertEncodingType : CERT_QUERY_ENCODING_TYPE -> "dword"
# pCertId : CERT_INFO* -> "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)。