DRMGetProcAddress

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

HRESULT DRMGetProcAddress(
    DWORD hLibrary,
    LPWSTR wszProcName,
    FARPROC* ppfnProcAddress
);

<DllImport("msdrm.dll", ExactSpelling:=True)>
Public Shared Function DRMGetProcAddress(
    hLibrary As UInteger,   ' DWORD
    <MarshalAs(UnmanagedType.LPWStr)> wszProcName As String,   ' LPWSTR
    ppfnProcAddress As IntPtr   ' FARPROC* in/out
) As Integer
End Function

' hLibrary : DWORD
' wszProcName : LPWSTR
' ppfnProcAddress : FARPROC* in/out
Declare PtrSafe Function DRMGetProcAddress Lib "msdrm" ( _
    ByVal hLibrary As Long, _
    ByVal wszProcName As LongPtr, _
    ByVal ppfnProcAddress 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

DRMGetProcAddress = ctypes.windll.msdrm.DRMGetProcAddress
DRMGetProcAddress.restype = ctypes.c_int
DRMGetProcAddress.argtypes = [
    wintypes.DWORD,  # hLibrary : DWORD
    wintypes.LPCWSTR,  # wszProcName : LPWSTR
    ctypes.c_void_p,  # ppfnProcAddress : FARPROC* in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('msdrm.dll')
DRMGetProcAddress = Fiddle::Function.new(
  lib['DRMGetProcAddress'],
  [
    -Fiddle::TYPE_INT,  # hLibrary : DWORD
    Fiddle::TYPE_VOIDP,  # wszProcName : LPWSTR
    Fiddle::TYPE_VOIDP,  # ppfnProcAddress : FARPROC* in/out
  ],
  Fiddle::TYPE_INT)

#[link(name = "msdrm")]
extern "system" {
    fn DRMGetProcAddress(
        hLibrary: u32,  // DWORD
        wszProcName: *mut u16,  // LPWSTR
        ppfnProcAddress: *mut *const core::ffi::c_void  // FARPROC* in/out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("msdrm.dll")]
public static extern int DRMGetProcAddress(uint hLibrary, [MarshalAs(UnmanagedType.LPWStr)] string wszProcName, IntPtr ppfnProcAddress);
"@
$api = Add-Type -MemberDefinition $sig -Name 'msdrm_DRMGetProcAddress' -Namespace Win32 -PassThru
# $api::DRMGetProcAddress(hLibrary, wszProcName, ppfnProcAddress)

#uselib "msdrm.dll"
#func global DRMGetProcAddress "DRMGetProcAddress" sptr, sptr, sptr
; DRMGetProcAddress hLibrary, wszProcName, ppfnProcAddress   ; 戻り値は stat
; hLibrary : DWORD -> "sptr"
; wszProcName : LPWSTR -> "sptr"
; ppfnProcAddress : FARPROC* 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 DRMGetProcAddress "DRMGetProcAddress" int, wstr, sptr
; res = DRMGetProcAddress(hLibrary, wszProcName, ppfnProcAddress)
; hLibrary : DWORD -> "int"
; wszProcName : LPWSTR -> "wstr"
; ppfnProcAddress : FARPROC* in/out -> "sptr"

; HRESULT DRMGetProcAddress(DWORD hLibrary, LPWSTR wszProcName, FARPROC* ppfnProcAddress)
#uselib "msdrm.dll"
#cfunc global DRMGetProcAddress "DRMGetProcAddress" int, wstr, intptr
; res = DRMGetProcAddress(hLibrary, wszProcName, ppfnProcAddress)
; hLibrary : DWORD -> "int"
; wszProcName : LPWSTR -> "wstr"
; ppfnProcAddress : FARPROC* in/out -> "intptr"

import (
	"golang.org/x/sys/windows"
	"unsafe"
)

var (
	msdrm = windows.NewLazySystemDLL("msdrm.dll")
	procDRMGetProcAddress = msdrm.NewProc("DRMGetProcAddress")
)

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

function DRMGetProcAddress(
  hLibrary: DWORD;   // DWORD
  wszProcName: PWideChar;   // LPWSTR
  ppfnProcAddress: Pointer   // FARPROC* in/out
): Integer; stdcall;
  external 'msdrm.dll' name 'DRMGetProcAddress';

result := DllCall("msdrm\DRMGetProcAddress"
    , "UInt", hLibrary   ; DWORD
    , "WStr", wszProcName   ; LPWSTR
    , "Ptr", ppfnProcAddress   ; FARPROC* in/out
    , "Int")   ; return: HRESULT

●DRMGetProcAddress(hLibrary, wszProcName, ppfnProcAddress) = DLL("msdrm.dll", "int DRMGetProcAddress(dword, char*, void*)")
# 呼び出し: DRMGetProcAddress(hLibrary, wszProcName, ppfnProcAddress)
# hLibrary : DWORD -> "dword"
# wszProcName : LPWSTR -> "char*"
# ppfnProcAddress : FARPROC* 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)。