DRMGetInfo

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

HRESULT DRMGetInfo(
    DWORD handle,
    LPWSTR wszAttribute,
    DRMENCODINGTYPE* peEncoding,
    DWORD* pcBuffer,
    BYTE* pbBuffer
);

<DllImport("msdrm.dll", ExactSpelling:=True)>
Public Shared Function DRMGetInfo(
    handle As UInteger,   ' DWORD
    <MarshalAs(UnmanagedType.LPWStr)> wszAttribute As String,   ' LPWSTR
    ByRef peEncoding As Integer,   ' DRMENCODINGTYPE*
    ByRef pcBuffer As UInteger,   ' DWORD* in/out
    pbBuffer As IntPtr   ' BYTE* in/out
) As Integer
End Function

' handle : DWORD
' wszAttribute : LPWSTR
' peEncoding : DRMENCODINGTYPE*
' pcBuffer : DWORD* in/out
' pbBuffer : BYTE* in/out
Declare PtrSafe Function DRMGetInfo Lib "msdrm" ( _
    ByVal handle As Long, _
    ByVal wszAttribute As LongPtr, _
    ByRef peEncoding As Long, _
    ByRef pcBuffer As Long, _
    ByVal pbBuffer 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

DRMGetInfo = ctypes.windll.msdrm.DRMGetInfo
DRMGetInfo.restype = ctypes.c_int
DRMGetInfo.argtypes = [
    wintypes.DWORD,  # handle : DWORD
    wintypes.LPCWSTR,  # wszAttribute : LPWSTR
    ctypes.c_void_p,  # peEncoding : DRMENCODINGTYPE*
    ctypes.POINTER(wintypes.DWORD),  # pcBuffer : DWORD* in/out
    ctypes.POINTER(ctypes.c_ubyte),  # pbBuffer : BYTE* in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('msdrm.dll')
DRMGetInfo = Fiddle::Function.new(
  lib['DRMGetInfo'],
  [
    -Fiddle::TYPE_INT,  # handle : DWORD
    Fiddle::TYPE_VOIDP,  # wszAttribute : LPWSTR
    Fiddle::TYPE_VOIDP,  # peEncoding : DRMENCODINGTYPE*
    Fiddle::TYPE_VOIDP,  # pcBuffer : DWORD* in/out
    Fiddle::TYPE_VOIDP,  # pbBuffer : BYTE* in/out
  ],
  Fiddle::TYPE_INT)

#[link(name = "msdrm")]
extern "system" {
    fn DRMGetInfo(
        handle: u32,  // DWORD
        wszAttribute: *mut u16,  // LPWSTR
        peEncoding: *mut i32,  // DRMENCODINGTYPE*
        pcBuffer: *mut u32,  // DWORD* in/out
        pbBuffer: *mut u8  // BYTE* in/out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("msdrm.dll")]
public static extern int DRMGetInfo(uint handle, [MarshalAs(UnmanagedType.LPWStr)] string wszAttribute, ref int peEncoding, ref uint pcBuffer, IntPtr pbBuffer);
"@
$api = Add-Type -MemberDefinition $sig -Name 'msdrm_DRMGetInfo' -Namespace Win32 -PassThru
# $api::DRMGetInfo(handle, wszAttribute, peEncoding, pcBuffer, pbBuffer)

#uselib "msdrm.dll"
#func global DRMGetInfo "DRMGetInfo" sptr, sptr, sptr, sptr, sptr
; DRMGetInfo handle, wszAttribute, peEncoding, varptr(pcBuffer), varptr(pbBuffer)   ; 戻り値は stat
; handle : DWORD -> "sptr"
; wszAttribute : LPWSTR -> "sptr"
; peEncoding : DRMENCODINGTYPE* -> "sptr"
; pcBuffer : DWORD* in/out -> "sptr"
; pbBuffer : BYTE* 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 DRMGetInfo "DRMGetInfo" int, wstr, int, var, var
; res = DRMGetInfo(handle, wszAttribute, peEncoding, pcBuffer, pbBuffer)
; handle : DWORD -> "int"
; wszAttribute : LPWSTR -> "wstr"
; peEncoding : DRMENCODINGTYPE* -> "int"
; pcBuffer : DWORD* in/out -> "var"
; pbBuffer : BYTE* 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 DRMGetInfo(DWORD handle, LPWSTR wszAttribute, DRMENCODINGTYPE* peEncoding, DWORD* pcBuffer, BYTE* pbBuffer)
#uselib "msdrm.dll"
#cfunc global DRMGetInfo "DRMGetInfo" int, wstr, int, var, var
; res = DRMGetInfo(handle, wszAttribute, peEncoding, pcBuffer, pbBuffer)
; handle : DWORD -> "int"
; wszAttribute : LPWSTR -> "wstr"
; peEncoding : DRMENCODINGTYPE* -> "int"
; pcBuffer : DWORD* in/out -> "var"
; pbBuffer : BYTE* 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")
	procDRMGetInfo = msdrm.NewProc("DRMGetInfo")
)

// handle (DWORD), wszAttribute (LPWSTR), peEncoding (DRMENCODINGTYPE*), pcBuffer (DWORD* in/out), pbBuffer (BYTE* in/out)
r1, _, err := procDRMGetInfo.Call(
	uintptr(handle),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(wszAttribute))),
	uintptr(peEncoding),
	uintptr(pcBuffer),
	uintptr(pbBuffer),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function DRMGetInfo(
  handle: DWORD;   // DWORD
  wszAttribute: PWideChar;   // LPWSTR
  peEncoding: Pointer;   // DRMENCODINGTYPE*
  pcBuffer: Pointer;   // DWORD* in/out
  pbBuffer: Pointer   // BYTE* in/out
): Integer; stdcall;
  external 'msdrm.dll' name 'DRMGetInfo';

result := DllCall("msdrm\DRMGetInfo"
    , "UInt", handle   ; DWORD
    , "WStr", wszAttribute   ; LPWSTR
    , "Ptr", peEncoding   ; DRMENCODINGTYPE*
    , "Ptr", pcBuffer   ; DWORD* in/out
    , "Ptr", pbBuffer   ; BYTE* in/out
    , "Int")   ; return: HRESULT

●DRMGetInfo(handle, wszAttribute, peEncoding, pcBuffer, pbBuffer) = DLL("msdrm.dll", "int DRMGetInfo(dword, char*, void*, void*, void*)")
# 呼び出し: DRMGetInfo(handle, wszAttribute, peEncoding, pcBuffer, pbBuffer)
# handle : DWORD -> "dword"
# wszAttribute : LPWSTR -> "char*"
# peEncoding : DRMENCODINGTYPE* -> "void*"
# pcBuffer : DWORD* in/out -> "void*"
# pbBuffer : BYTE* 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)。