DRMEnumerateLicense

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

HRESULT DRMEnumerateLicense(
    DWORD hSession,
    DWORD uFlags,
    DWORD uIndex,
    BOOL* pfSharedFlag,
    DWORD* puCertificateDataLen,
    LPWSTR wszCertificateData   // optional
);

<DllImport("msdrm.dll", ExactSpelling:=True)>
Public Shared Function DRMEnumerateLicense(
    hSession As UInteger,   ' DWORD
    uFlags As UInteger,   ' DWORD
    uIndex As UInteger,   ' DWORD
    ByRef pfSharedFlag As Integer,   ' BOOL* in/out
    ByRef puCertificateDataLen As UInteger,   ' DWORD* in/out
    <MarshalAs(UnmanagedType.LPWStr)> wszCertificateData As System.Text.StringBuilder   ' LPWSTR optional, out
) As Integer
End Function

' hSession : DWORD
' uFlags : DWORD
' uIndex : DWORD
' pfSharedFlag : BOOL* in/out
' puCertificateDataLen : DWORD* in/out
' wszCertificateData : LPWSTR optional, out
Declare PtrSafe Function DRMEnumerateLicense Lib "msdrm" ( _
    ByVal hSession As Long, _
    ByVal uFlags As Long, _
    ByVal uIndex As Long, _
    ByRef pfSharedFlag As Long, _
    ByRef puCertificateDataLen As Long, _
    ByVal wszCertificateData 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

DRMEnumerateLicense = ctypes.windll.msdrm.DRMEnumerateLicense
DRMEnumerateLicense.restype = ctypes.c_int
DRMEnumerateLicense.argtypes = [
    wintypes.DWORD,  # hSession : DWORD
    wintypes.DWORD,  # uFlags : DWORD
    wintypes.DWORD,  # uIndex : DWORD
    ctypes.c_void_p,  # pfSharedFlag : BOOL* in/out
    ctypes.POINTER(wintypes.DWORD),  # puCertificateDataLen : DWORD* in/out
    wintypes.LPWSTR,  # wszCertificateData : LPWSTR optional, out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('msdrm.dll')
DRMEnumerateLicense = Fiddle::Function.new(
  lib['DRMEnumerateLicense'],
  [
    -Fiddle::TYPE_INT,  # hSession : DWORD
    -Fiddle::TYPE_INT,  # uFlags : DWORD
    -Fiddle::TYPE_INT,  # uIndex : DWORD
    Fiddle::TYPE_VOIDP,  # pfSharedFlag : BOOL* in/out
    Fiddle::TYPE_VOIDP,  # puCertificateDataLen : DWORD* in/out
    Fiddle::TYPE_VOIDP,  # wszCertificateData : LPWSTR optional, out
  ],
  Fiddle::TYPE_INT)

#[link(name = "msdrm")]
extern "system" {
    fn DRMEnumerateLicense(
        hSession: u32,  // DWORD
        uFlags: u32,  // DWORD
        uIndex: u32,  // DWORD
        pfSharedFlag: *mut i32,  // BOOL* in/out
        puCertificateDataLen: *mut u32,  // DWORD* in/out
        wszCertificateData: *mut u16  // LPWSTR optional, out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("msdrm.dll")]
public static extern int DRMEnumerateLicense(uint hSession, uint uFlags, uint uIndex, ref int pfSharedFlag, ref uint puCertificateDataLen, [MarshalAs(UnmanagedType.LPWStr)] System.Text.StringBuilder wszCertificateData);
"@
$api = Add-Type -MemberDefinition $sig -Name 'msdrm_DRMEnumerateLicense' -Namespace Win32 -PassThru
# $api::DRMEnumerateLicense(hSession, uFlags, uIndex, pfSharedFlag, puCertificateDataLen, wszCertificateData)

#uselib "msdrm.dll"
#func global DRMEnumerateLicense "DRMEnumerateLicense" sptr, sptr, sptr, sptr, sptr, sptr
; DRMEnumerateLicense hSession, uFlags, uIndex, pfSharedFlag, varptr(puCertificateDataLen), varptr(wszCertificateData)   ; 戻り値は stat
; hSession : DWORD -> "sptr"
; uFlags : DWORD -> "sptr"
; uIndex : DWORD -> "sptr"
; pfSharedFlag : BOOL* in/out -> "sptr"
; puCertificateDataLen : DWORD* in/out -> "sptr"
; wszCertificateData : LPWSTR optional, 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 DRMEnumerateLicense "DRMEnumerateLicense" int, int, int, int, var, var
; res = DRMEnumerateLicense(hSession, uFlags, uIndex, pfSharedFlag, puCertificateDataLen, wszCertificateData)
; hSession : DWORD -> "int"
; uFlags : DWORD -> "int"
; uIndex : DWORD -> "int"
; pfSharedFlag : BOOL* in/out -> "int"
; puCertificateDataLen : DWORD* in/out -> "var"
; wszCertificateData : LPWSTR optional, 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 DRMEnumerateLicense(DWORD hSession, DWORD uFlags, DWORD uIndex, BOOL* pfSharedFlag, DWORD* puCertificateDataLen, LPWSTR wszCertificateData)
#uselib "msdrm.dll"
#cfunc global DRMEnumerateLicense "DRMEnumerateLicense" int, int, int, int, var, var
; res = DRMEnumerateLicense(hSession, uFlags, uIndex, pfSharedFlag, puCertificateDataLen, wszCertificateData)
; hSession : DWORD -> "int"
; uFlags : DWORD -> "int"
; uIndex : DWORD -> "int"
; pfSharedFlag : BOOL* in/out -> "int"
; puCertificateDataLen : DWORD* in/out -> "var"
; wszCertificateData : LPWSTR optional, 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")
	procDRMEnumerateLicense = msdrm.NewProc("DRMEnumerateLicense")
)

// hSession (DWORD), uFlags (DWORD), uIndex (DWORD), pfSharedFlag (BOOL* in/out), puCertificateDataLen (DWORD* in/out), wszCertificateData (LPWSTR optional, out)
r1, _, err := procDRMEnumerateLicense.Call(
	uintptr(hSession),
	uintptr(uFlags),
	uintptr(uIndex),
	uintptr(pfSharedFlag),
	uintptr(puCertificateDataLen),
	uintptr(wszCertificateData),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function DRMEnumerateLicense(
  hSession: DWORD;   // DWORD
  uFlags: DWORD;   // DWORD
  uIndex: DWORD;   // DWORD
  pfSharedFlag: Pointer;   // BOOL* in/out
  puCertificateDataLen: Pointer;   // DWORD* in/out
  wszCertificateData: PWideChar   // LPWSTR optional, out
): Integer; stdcall;
  external 'msdrm.dll' name 'DRMEnumerateLicense';

result := DllCall("msdrm\DRMEnumerateLicense"
    , "UInt", hSession   ; DWORD
    , "UInt", uFlags   ; DWORD
    , "UInt", uIndex   ; DWORD
    , "Ptr", pfSharedFlag   ; BOOL* in/out
    , "Ptr", puCertificateDataLen   ; DWORD* in/out
    , "Ptr", wszCertificateData   ; LPWSTR optional, out
    , "Int")   ; return: HRESULT

●DRMEnumerateLicense(hSession, uFlags, uIndex, pfSharedFlag, puCertificateDataLen, wszCertificateData) = DLL("msdrm.dll", "int DRMEnumerateLicense(dword, dword, dword, void*, void*, char*)")
# 呼び出し: DRMEnumerateLicense(hSession, uFlags, uIndex, pfSharedFlag, puCertificateDataLen, wszCertificateData)
# hSession : DWORD -> "dword"
# uFlags : DWORD -> "dword"
# uIndex : DWORD -> "dword"
# pfSharedFlag : BOOL* in/out -> "void*"
# puCertificateDataLen : DWORD* in/out -> "void*"
# wszCertificateData : LPWSTR optional, out -> "char*"
# 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)。