OpenDriver

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

HDRVR OpenDriver(
    LPCWSTR szDriverName,
    LPCWSTR szSectionName,
    LPARAM lParam2
);

<DllImport("WINMM.dll", ExactSpelling:=True)>
Public Shared Function OpenDriver(
    <MarshalAs(UnmanagedType.LPWStr)> szDriverName As String,   ' LPCWSTR
    <MarshalAs(UnmanagedType.LPWStr)> szSectionName As String,   ' LPCWSTR
    lParam2 As IntPtr   ' LPARAM
) As IntPtr
End Function

' szDriverName : LPCWSTR
' szSectionName : LPCWSTR
' lParam2 : LPARAM
Declare PtrSafe Function OpenDriver Lib "winmm" ( _
    ByVal szDriverName As LongPtr, _
    ByVal szSectionName As LongPtr, _
    ByVal lParam2 As LongPtr) As LongPtr
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

OpenDriver = ctypes.windll.winmm.OpenDriver
OpenDriver.restype = ctypes.c_void_p
OpenDriver.argtypes = [
    wintypes.LPCWSTR,  # szDriverName : LPCWSTR
    wintypes.LPCWSTR,  # szSectionName : LPCWSTR
    ctypes.c_ssize_t,  # lParam2 : LPARAM
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('WINMM.dll')
OpenDriver = Fiddle::Function.new(
  lib['OpenDriver'],
  [
    Fiddle::TYPE_VOIDP,  # szDriverName : LPCWSTR
    Fiddle::TYPE_VOIDP,  # szSectionName : LPCWSTR
    Fiddle::TYPE_INTPTR_T,  # lParam2 : LPARAM
  ],
  Fiddle::TYPE_VOIDP)

#[link(name = "winmm")]
extern "system" {
    fn OpenDriver(
        szDriverName: *const u16,  // LPCWSTR
        szSectionName: *const u16,  // LPCWSTR
        lParam2: isize  // LPARAM
    ) -> *mut core::ffi::c_void;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("WINMM.dll")]
public static extern IntPtr OpenDriver([MarshalAs(UnmanagedType.LPWStr)] string szDriverName, [MarshalAs(UnmanagedType.LPWStr)] string szSectionName, IntPtr lParam2);
"@
$api = Add-Type -MemberDefinition $sig -Name 'WINMM_OpenDriver' -Namespace Win32 -PassThru
# $api::OpenDriver(szDriverName, szSectionName, lParam2)

#uselib "WINMM.dll"
#func global OpenDriver "OpenDriver" sptr, sptr, sptr
; OpenDriver szDriverName, szSectionName, lParam2   ; 戻り値は stat
; szDriverName : LPCWSTR -> "sptr"
; szSectionName : LPCWSTR -> "sptr"
; lParam2 : LPARAM -> "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 "WINMM.dll"
#cfunc global OpenDriver "OpenDriver" wstr, wstr, sptr
; res = OpenDriver(szDriverName, szSectionName, lParam2)
; szDriverName : LPCWSTR -> "wstr"
; szSectionName : LPCWSTR -> "wstr"
; lParam2 : LPARAM -> "sptr"

; HDRVR OpenDriver(LPCWSTR szDriverName, LPCWSTR szSectionName, LPARAM lParam2)
#uselib "WINMM.dll"
#cfunc global OpenDriver "OpenDriver" wstr, wstr, intptr
; res = OpenDriver(szDriverName, szSectionName, lParam2)
; szDriverName : LPCWSTR -> "wstr"
; szSectionName : LPCWSTR -> "wstr"
; lParam2 : LPARAM -> "intptr"

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

var (
	winmm = windows.NewLazySystemDLL("WINMM.dll")
	procOpenDriver = winmm.NewProc("OpenDriver")
)

// szDriverName (LPCWSTR), szSectionName (LPCWSTR), lParam2 (LPARAM)
r1, _, err := procOpenDriver.Call(
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(szDriverName))),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(szSectionName))),
	uintptr(lParam2),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HDRVR

function OpenDriver(
  szDriverName: PWideChar;   // LPCWSTR
  szSectionName: PWideChar;   // LPCWSTR
  lParam2: NativeInt   // LPARAM
): THandle; stdcall;
  external 'WINMM.dll' name 'OpenDriver';

result := DllCall("WINMM\OpenDriver"
    , "WStr", szDriverName   ; LPCWSTR
    , "WStr", szSectionName   ; LPCWSTR
    , "Ptr", lParam2   ; LPARAM
    , "Ptr")   ; return: HDRVR

●OpenDriver(szDriverName, szSectionName, lParam2) = DLL("WINMM.dll", "void* OpenDriver(char*, char*, int)")
# 呼び出し: OpenDriver(szDriverName, szSectionName, lParam2)
# szDriverName : LPCWSTR -> "char*"
# szSectionName : LPCWSTR -> "char*"
# lParam2 : LPARAM -> "int"
# 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)。

const std = @import("std");

extern "winmm" fn OpenDriver(
    szDriverName: [*c]const u16, // LPCWSTR
    szSectionName: [*c]const u16, // LPCWSTR
    lParam2: isize // LPARAM
) callconv(std.os.windows.WINAPI) ?*anyopaque;

proc OpenDriver(
    szDriverName: WideCString,  # LPCWSTR
    szSectionName: WideCString,  # LPCWSTR
    lParam2: int  # LPARAM
): pointer {.importc: "OpenDriver", stdcall, dynlib: "WINMM.dll".}

pragma(lib, "winmm");
extern(Windows)
void* OpenDriver(
    const(wchar)* szDriverName,   // LPCWSTR
    const(wchar)* szSectionName,   // LPCWSTR
    ptrdiff_t lParam2   // LPARAM
);

ccall((:OpenDriver, "WINMM.dll"), stdcall, Ptr{Cvoid},
      (Cwstring, Cwstring, Int),
      szDriverName, szSectionName, lParam2)
# szDriverName : LPCWSTR -> Cwstring
# szSectionName : LPCWSTR -> Cwstring
# lParam2 : LPARAM -> Int
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
void* OpenDriver(
    const uint16_t* szDriverName,
    const uint16_t* szSectionName,
    intptr_t lParam2);
]]
local winmm = ffi.load("winmm")
-- winmm.OpenDriver(szDriverName, szSectionName, lParam2)
-- szDriverName : LPCWSTR
-- szSectionName : LPCWSTR
-- lParam2 : LPARAM
-- 構造体/GUIDへのポインタは cdef が通るよう void* で表記(実型は各引数コメント参照)。値渡し構造体・enum は対応する typedef を cdef に追加すること。

const koffi = require('koffi');
const lib = koffi.load('WINMM.dll');
const OpenDriver = lib.func('__stdcall', 'OpenDriver', 'void *', ['str16', 'str16', 'intptr_t']);
// OpenDriver(szDriverName, szSectionName, lParam2)
// szDriverName : LPCWSTR -> 'str16'
// szSectionName : LPCWSTR -> 'str16'
// lParam2 : LPARAM -> 'intptr_t'
// 出力ポインタは koffi.out(...) で包む。構造体は koffi.struct で定義。

const lib = Deno.dlopen("WINMM.dll", {
  OpenDriver: { parameters: ["buffer", "buffer", "isize"], result: "pointer" },
});
// lib.symbols.OpenDriver(szDriverName, szSectionName, lParam2)
// szDriverName : LPCWSTR -> "buffer"
// szSectionName : LPCWSTR -> "buffer"
// lParam2 : LPARAM -> "isize"
// 文字列引数は "buffer"(NUL 終端のバイト列を Uint8Array で渡す)。
// 値渡し構造体は { struct: [ ...field types... ] } を使用。

<?php
$ffi = FFI::cdef(<<<C
void* OpenDriver(
    const uint16_t* szDriverName,
    const uint16_t* szSectionName,
    intptr_t lParam2);
C, "WINMM.dll");
// $ffi->OpenDriver(szDriverName, szSectionName, lParam2);
// szDriverName : LPCWSTR
// szSectionName : LPCWSTR
// lParam2 : LPARAM
// 構造体/GUIDへのポインタは cdef が通るよう void* で表記(実型は各引数コメント参照)。値渡し構造体・enum は対応する typedef を cdef に追加すること。
// WINAPI(stdcall): x64 では呼出規約が統一されるため問題なし。x86 では __stdcall 対応のラッパが必要な場合あり。

import com.sun.jna.*;
import com.sun.jna.ptr.*;
import com.sun.jna.win32.StdCallLibrary;
import com.sun.jna.win32.W32APIOptions;

public interface Winmm extends StdCallLibrary {
    Winmm INSTANCE = Native.load("winmm", Winmm.class);
    Pointer OpenDriver(
        WString szDriverName,   // LPCWSTR
        WString szSectionName,   // LPCWSTR
        long lParam2   // LPARAM
    );
}

@[Link("winmm")]
lib LibWINMM
  fun OpenDriver = OpenDriver(
    szDriverName : UInt16*,   # LPCWSTR
    szSectionName : UInt16*,   # LPCWSTR
    lParam2 : LibC::SSizeT   # LPARAM
  ) : Void*
end
# 構造体/GUID/enum は lib 内に対応する型定義が必要。
# 呼出規約: x64 は規約統一のため OK。x86(32bit)は WINAPI=stdcall だが Crystal の fun に stdcall 付与構文がなく非対応。

import 'dart:ffi';
import 'package:ffi/ffi.dart';

typedef OpenDriverNative = Pointer<Void> Function(Pointer<Utf16>, Pointer<Utf16>, IntPtr);
typedef OpenDriverDart = Pointer<Void> Function(Pointer<Utf16>, Pointer<Utf16>, int);
final OpenDriver = DynamicLibrary.open('WINMM.dll')
    .lookupFunction<OpenDriverNative, OpenDriverDart>('OpenDriver');
// szDriverName : LPCWSTR -> Pointer<Utf16>
// szSectionName : LPCWSTR -> Pointer<Utf16>
// lParam2 : LPARAM -> IntPtr
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function OpenDriver(
  szDriverName: PWideChar;   // LPCWSTR
  szSectionName: PWideChar;   // LPCWSTR
  lParam2: NativeInt   // LPARAM
): THandle; stdcall;
  external 'WINMM.dll' name 'OpenDriver';

import Foreign
import Foreign.C.Types
import Foreign.C.String

foreign import stdcall safe "OpenDriver"
  c_OpenDriver :: CWString -> CWString -> CIntPtr -> IO (Ptr ())
-- szDriverName : LPCWSTR -> CWString
-- szSectionName : LPCWSTR -> CWString
-- lParam2 : LPARAM -> CIntPtr
-- 要 GHC(Windows)。stdcall は x64 では ccall として扱われる。ブロックする API は safe 呼び出し推奨。

open Ctypes
open Foreign

let opendriver =
  foreign "OpenDriver"
    ((ptr uint16_t) @-> (ptr uint16_t) @-> intptr_t @-> returning (ptr void))
(* szDriverName : LPCWSTR -> (ptr uint16_t) *)
(* szSectionName : LPCWSTR -> (ptr uint16_t) *)
(* lParam2 : LPARAM -> intptr_t *)
(* foreign は cdecl 前提。x64 Windows では WINAPI と一致。構造体は ctypes structure を定義のこと。 *)

(cffi:define-foreign-library winmm (t "WINMM.dll"))
(cffi:use-foreign-library winmm)

(cffi:defcfun ("OpenDriver" open-driver :convention :stdcall) :pointer
  (sz-driver-name (:string :encoding :utf-16le))   ; LPCWSTR
  (sz-section-name (:string :encoding :utf-16le))   ; LPCWSTR
  (l-param2 :int64))   ; LPARAM
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $OpenDriver = Win32::API::More->new('WINMM',
    'HANDLE OpenDriver(LPCWSTR szDriverName, LPCWSTR szSectionName, LPARAM lParam2)');
# my $ret = $OpenDriver->Call($szDriverName, $szSectionName, $lParam2);
# szDriverName : LPCWSTR -> LPCWSTR
# szSectionName : LPCWSTR -> LPCWSTR
# lParam2 : LPARAM -> LPARAM
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。