DRMGetCertificateChainCount

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

HRESULT DRMGetCertificateChainCount(
    LPWSTR wszChain,
    DWORD* pcCertCount
);

<DllImport("msdrm.dll", ExactSpelling:=True)>
Public Shared Function DRMGetCertificateChainCount(
    <MarshalAs(UnmanagedType.LPWStr)> wszChain As String,   ' LPWSTR
    ByRef pcCertCount As UInteger   ' DWORD* in/out
) As Integer
End Function

' wszChain : LPWSTR
' pcCertCount : DWORD* in/out
Declare PtrSafe Function DRMGetCertificateChainCount Lib "msdrm" ( _
    ByVal wszChain As LongPtr, _
    ByRef pcCertCount 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

DRMGetCertificateChainCount = ctypes.windll.msdrm.DRMGetCertificateChainCount
DRMGetCertificateChainCount.restype = ctypes.c_int
DRMGetCertificateChainCount.argtypes = [
    wintypes.LPCWSTR,  # wszChain : LPWSTR
    ctypes.POINTER(wintypes.DWORD),  # pcCertCount : DWORD* in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('msdrm.dll')
DRMGetCertificateChainCount = Fiddle::Function.new(
  lib['DRMGetCertificateChainCount'],
  [
    Fiddle::TYPE_VOIDP,  # wszChain : LPWSTR
    Fiddle::TYPE_VOIDP,  # pcCertCount : DWORD* in/out
  ],
  Fiddle::TYPE_INT)

#[link(name = "msdrm")]
extern "system" {
    fn DRMGetCertificateChainCount(
        wszChain: *mut u16,  // LPWSTR
        pcCertCount: *mut u32  // DWORD* in/out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("msdrm.dll")]
public static extern int DRMGetCertificateChainCount([MarshalAs(UnmanagedType.LPWStr)] string wszChain, ref uint pcCertCount);
"@
$api = Add-Type -MemberDefinition $sig -Name 'msdrm_DRMGetCertificateChainCount' -Namespace Win32 -PassThru
# $api::DRMGetCertificateChainCount(wszChain, pcCertCount)

#uselib "msdrm.dll"
#func global DRMGetCertificateChainCount "DRMGetCertificateChainCount" sptr, sptr
; DRMGetCertificateChainCount wszChain, varptr(pcCertCount)   ; 戻り値は stat
; wszChain : LPWSTR -> "sptr"
; pcCertCount : DWORD* in/out -> "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 "msdrm.dll"
#cfunc global DRMGetCertificateChainCount "DRMGetCertificateChainCount" wstr, var
; res = DRMGetCertificateChainCount(wszChain, pcCertCount)
; wszChain : LPWSTR -> "wstr"
; pcCertCount : DWORD* in/out -> "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。

; HRESULT DRMGetCertificateChainCount(LPWSTR wszChain, DWORD* pcCertCount)
#uselib "msdrm.dll"
#cfunc global DRMGetCertificateChainCount "DRMGetCertificateChainCount" wstr, var
; res = DRMGetCertificateChainCount(wszChain, pcCertCount)
; wszChain : LPWSTR -> "wstr"
; pcCertCount : DWORD* in/out -> "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 (
	msdrm = windows.NewLazySystemDLL("msdrm.dll")
	procDRMGetCertificateChainCount = msdrm.NewProc("DRMGetCertificateChainCount")
)

// wszChain (LPWSTR), pcCertCount (DWORD* in/out)
r1, _, err := procDRMGetCertificateChainCount.Call(
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(wszChain))),
	uintptr(pcCertCount),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function DRMGetCertificateChainCount(
  wszChain: PWideChar;   // LPWSTR
  pcCertCount: Pointer   // DWORD* in/out
): Integer; stdcall;
  external 'msdrm.dll' name 'DRMGetCertificateChainCount';

result := DllCall("msdrm\DRMGetCertificateChainCount"
    , "WStr", wszChain   ; LPWSTR
    , "Ptr", pcCertCount   ; DWORD* in/out
    , "Int")   ; return: HRESULT

●DRMGetCertificateChainCount(wszChain, pcCertCount) = DLL("msdrm.dll", "int DRMGetCertificateChainCount(char*, void*)")
# 呼び出し: DRMGetCertificateChainCount(wszChain, pcCertCount)
# wszChain : LPWSTR -> "char*"
# pcCertCount : DWORD* in/out -> "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)。