DRMGetUnboundLicenseObjectCount

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

HRESULT DRMGetUnboundLicenseObjectCount(
    DWORD hQueryRoot,
    LPWSTR wszSubObjectType,
    DWORD* pcSubObjects
);

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

' hQueryRoot : DWORD
' wszSubObjectType : LPWSTR
' pcSubObjects : DWORD* in/out
Declare PtrSafe Function DRMGetUnboundLicenseObjectCount Lib "msdrm" ( _
    ByVal hQueryRoot As Long, _
    ByVal wszSubObjectType As LongPtr, _
    ByRef pcSubObjects 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

DRMGetUnboundLicenseObjectCount = ctypes.windll.msdrm.DRMGetUnboundLicenseObjectCount
DRMGetUnboundLicenseObjectCount.restype = ctypes.c_int
DRMGetUnboundLicenseObjectCount.argtypes = [
    wintypes.DWORD,  # hQueryRoot : DWORD
    wintypes.LPCWSTR,  # wszSubObjectType : LPWSTR
    ctypes.POINTER(wintypes.DWORD),  # pcSubObjects : DWORD* in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('msdrm.dll')
DRMGetUnboundLicenseObjectCount = Fiddle::Function.new(
  lib['DRMGetUnboundLicenseObjectCount'],
  [
    -Fiddle::TYPE_INT,  # hQueryRoot : DWORD
    Fiddle::TYPE_VOIDP,  # wszSubObjectType : LPWSTR
    Fiddle::TYPE_VOIDP,  # pcSubObjects : DWORD* in/out
  ],
  Fiddle::TYPE_INT)

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

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

#uselib "msdrm.dll"
#func global DRMGetUnboundLicenseObjectCount "DRMGetUnboundLicenseObjectCount" sptr, sptr, sptr
; DRMGetUnboundLicenseObjectCount hQueryRoot, wszSubObjectType, varptr(pcSubObjects)   ; 戻り値は stat
; hQueryRoot : DWORD -> "sptr"
; wszSubObjectType : LPWSTR -> "sptr"
; pcSubObjects : 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 DRMGetUnboundLicenseObjectCount "DRMGetUnboundLicenseObjectCount" int, wstr, var
; res = DRMGetUnboundLicenseObjectCount(hQueryRoot, wszSubObjectType, pcSubObjects)
; hQueryRoot : DWORD -> "int"
; wszSubObjectType : LPWSTR -> "wstr"
; pcSubObjects : 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 DRMGetUnboundLicenseObjectCount(DWORD hQueryRoot, LPWSTR wszSubObjectType, DWORD* pcSubObjects)
#uselib "msdrm.dll"
#cfunc global DRMGetUnboundLicenseObjectCount "DRMGetUnboundLicenseObjectCount" int, wstr, var
; res = DRMGetUnboundLicenseObjectCount(hQueryRoot, wszSubObjectType, pcSubObjects)
; hQueryRoot : DWORD -> "int"
; wszSubObjectType : LPWSTR -> "wstr"
; pcSubObjects : 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")
	procDRMGetUnboundLicenseObjectCount = msdrm.NewProc("DRMGetUnboundLicenseObjectCount")
)

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

function DRMGetUnboundLicenseObjectCount(
  hQueryRoot: DWORD;   // DWORD
  wszSubObjectType: PWideChar;   // LPWSTR
  pcSubObjects: Pointer   // DWORD* in/out
): Integer; stdcall;
  external 'msdrm.dll' name 'DRMGetUnboundLicenseObjectCount';

result := DllCall("msdrm\DRMGetUnboundLicenseObjectCount"
    , "UInt", hQueryRoot   ; DWORD
    , "WStr", wszSubObjectType   ; LPWSTR
    , "Ptr", pcSubObjects   ; DWORD* in/out
    , "Int")   ; return: HRESULT

●DRMGetUnboundLicenseObjectCount(hQueryRoot, wszSubObjectType, pcSubObjects) = DLL("msdrm.dll", "int DRMGetUnboundLicenseObjectCount(dword, char*, void*)")
# 呼び出し: DRMGetUnboundLicenseObjectCount(hQueryRoot, wszSubObjectType, pcSubObjects)
# hQueryRoot : DWORD -> "dword"
# wszSubObjectType : LPWSTR -> "char*"
# pcSubObjects : 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)。