DRMGetOwnerLicense

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

HRESULT DRMGetOwnerLicense(
    DWORD hIssuanceLicense,
    DWORD* puOwnerLicenseLength,
    LPWSTR wszOwnerLicense   // optional
);

<DllImport("msdrm.dll", ExactSpelling:=True)>
Public Shared Function DRMGetOwnerLicense(
    hIssuanceLicense As UInteger,   ' DWORD
    ByRef puOwnerLicenseLength As UInteger,   ' DWORD* in/out
    <MarshalAs(UnmanagedType.LPWStr)> wszOwnerLicense As System.Text.StringBuilder   ' LPWSTR optional, out
) As Integer
End Function

' hIssuanceLicense : DWORD
' puOwnerLicenseLength : DWORD* in/out
' wszOwnerLicense : LPWSTR optional, out
Declare PtrSafe Function DRMGetOwnerLicense Lib "msdrm" ( _
    ByVal hIssuanceLicense As Long, _
    ByRef puOwnerLicenseLength As Long, _
    ByVal wszOwnerLicense 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

DRMGetOwnerLicense = ctypes.windll.msdrm.DRMGetOwnerLicense
DRMGetOwnerLicense.restype = ctypes.c_int
DRMGetOwnerLicense.argtypes = [
    wintypes.DWORD,  # hIssuanceLicense : DWORD
    ctypes.POINTER(wintypes.DWORD),  # puOwnerLicenseLength : DWORD* in/out
    wintypes.LPWSTR,  # wszOwnerLicense : LPWSTR optional, out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('msdrm.dll')
DRMGetOwnerLicense = Fiddle::Function.new(
  lib['DRMGetOwnerLicense'],
  [
    -Fiddle::TYPE_INT,  # hIssuanceLicense : DWORD
    Fiddle::TYPE_VOIDP,  # puOwnerLicenseLength : DWORD* in/out
    Fiddle::TYPE_VOIDP,  # wszOwnerLicense : LPWSTR optional, out
  ],
  Fiddle::TYPE_INT)

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

$sig = @"
[DllImport("msdrm.dll")]
public static extern int DRMGetOwnerLicense(uint hIssuanceLicense, ref uint puOwnerLicenseLength, [MarshalAs(UnmanagedType.LPWStr)] System.Text.StringBuilder wszOwnerLicense);
"@
$api = Add-Type -MemberDefinition $sig -Name 'msdrm_DRMGetOwnerLicense' -Namespace Win32 -PassThru
# $api::DRMGetOwnerLicense(hIssuanceLicense, puOwnerLicenseLength, wszOwnerLicense)

#uselib "msdrm.dll"
#func global DRMGetOwnerLicense "DRMGetOwnerLicense" sptr, sptr, sptr
; DRMGetOwnerLicense hIssuanceLicense, varptr(puOwnerLicenseLength), varptr(wszOwnerLicense)   ; 戻り値は stat
; hIssuanceLicense : DWORD -> "sptr"
; puOwnerLicenseLength : DWORD* in/out -> "sptr"
; wszOwnerLicense : 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 DRMGetOwnerLicense "DRMGetOwnerLicense" int, var, var
; res = DRMGetOwnerLicense(hIssuanceLicense, puOwnerLicenseLength, wszOwnerLicense)
; hIssuanceLicense : DWORD -> "int"
; puOwnerLicenseLength : DWORD* in/out -> "var"
; wszOwnerLicense : 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 DRMGetOwnerLicense(DWORD hIssuanceLicense, DWORD* puOwnerLicenseLength, LPWSTR wszOwnerLicense)
#uselib "msdrm.dll"
#cfunc global DRMGetOwnerLicense "DRMGetOwnerLicense" int, var, var
; res = DRMGetOwnerLicense(hIssuanceLicense, puOwnerLicenseLength, wszOwnerLicense)
; hIssuanceLicense : DWORD -> "int"
; puOwnerLicenseLength : DWORD* in/out -> "var"
; wszOwnerLicense : 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")
	procDRMGetOwnerLicense = msdrm.NewProc("DRMGetOwnerLicense")
)

// hIssuanceLicense (DWORD), puOwnerLicenseLength (DWORD* in/out), wszOwnerLicense (LPWSTR optional, out)
r1, _, err := procDRMGetOwnerLicense.Call(
	uintptr(hIssuanceLicense),
	uintptr(puOwnerLicenseLength),
	uintptr(wszOwnerLicense),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function DRMGetOwnerLicense(
  hIssuanceLicense: DWORD;   // DWORD
  puOwnerLicenseLength: Pointer;   // DWORD* in/out
  wszOwnerLicense: PWideChar   // LPWSTR optional, out
): Integer; stdcall;
  external 'msdrm.dll' name 'DRMGetOwnerLicense';

result := DllCall("msdrm\DRMGetOwnerLicense"
    , "UInt", hIssuanceLicense   ; DWORD
    , "Ptr", puOwnerLicenseLength   ; DWORD* in/out
    , "Ptr", wszOwnerLicense   ; LPWSTR optional, out
    , "Int")   ; return: HRESULT

●DRMGetOwnerLicense(hIssuanceLicense, puOwnerLicenseLength, wszOwnerLicense) = DLL("msdrm.dll", "int DRMGetOwnerLicense(dword, void*, char*)")
# 呼び出し: DRMGetOwnerLicense(hIssuanceLicense, puOwnerLicenseLength, wszOwnerLicense)
# hIssuanceLicense : DWORD -> "dword"
# puOwnerLicenseLength : DWORD* in/out -> "void*"
# wszOwnerLicense : 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)。