HcsGetLayerVhdMountPath

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

HRESULT HcsGetLayerVhdMountPath(
    HANDLE vhdHandle,
    LPWSTR* mountPath
);

<DllImport("computestorage.dll", ExactSpelling:=True)>
Public Shared Function HcsGetLayerVhdMountPath(
    vhdHandle As IntPtr,   ' HANDLE
    mountPath As IntPtr   ' LPWSTR* out
) As Integer
End Function

' vhdHandle : HANDLE
' mountPath : LPWSTR* out
Declare PtrSafe Function HcsGetLayerVhdMountPath Lib "computestorage" ( _
    ByVal vhdHandle As LongPtr, _
    ByVal mountPath 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

HcsGetLayerVhdMountPath = ctypes.windll.computestorage.HcsGetLayerVhdMountPath
HcsGetLayerVhdMountPath.restype = ctypes.c_int
HcsGetLayerVhdMountPath.argtypes = [
    wintypes.HANDLE,  # vhdHandle : HANDLE
    ctypes.c_void_p,  # mountPath : LPWSTR* out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('computestorage.dll')
HcsGetLayerVhdMountPath = Fiddle::Function.new(
  lib['HcsGetLayerVhdMountPath'],
  [
    Fiddle::TYPE_VOIDP,  # vhdHandle : HANDLE
    Fiddle::TYPE_VOIDP,  # mountPath : LPWSTR* out
  ],
  Fiddle::TYPE_INT)

#[link(name = "computestorage")]
extern "system" {
    fn HcsGetLayerVhdMountPath(
        vhdHandle: *mut core::ffi::c_void,  // HANDLE
        mountPath: *mut *mut u16  // LPWSTR* out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("computestorage.dll")]
public static extern int HcsGetLayerVhdMountPath(IntPtr vhdHandle, IntPtr mountPath);
"@
$api = Add-Type -MemberDefinition $sig -Name 'computestorage_HcsGetLayerVhdMountPath' -Namespace Win32 -PassThru
# $api::HcsGetLayerVhdMountPath(vhdHandle, mountPath)

#uselib "computestorage.dll"
#func global HcsGetLayerVhdMountPath "HcsGetLayerVhdMountPath" sptr, sptr
; HcsGetLayerVhdMountPath vhdHandle, varptr(mountPath)   ; 戻り値は stat
; vhdHandle : HANDLE -> "sptr"
; mountPath : LPWSTR* 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。

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

var (
	computestorage = windows.NewLazySystemDLL("computestorage.dll")
	procHcsGetLayerVhdMountPath = computestorage.NewProc("HcsGetLayerVhdMountPath")
)

// vhdHandle (HANDLE), mountPath (LPWSTR* out)
r1, _, err := procHcsGetLayerVhdMountPath.Call(
	uintptr(vhdHandle),
	uintptr(mountPath),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function HcsGetLayerVhdMountPath(
  vhdHandle: THandle;   // HANDLE
  mountPath: PPWideChar   // LPWSTR* out
): Integer; stdcall;
  external 'computestorage.dll' name 'HcsGetLayerVhdMountPath';

result := DllCall("computestorage\HcsGetLayerVhdMountPath"
    , "Ptr", vhdHandle   ; HANDLE
    , "Ptr", mountPath   ; LPWSTR* out
    , "Int")   ; return: HRESULT

●HcsGetLayerVhdMountPath(vhdHandle, mountPath) = DLL("computestorage.dll", "int HcsGetLayerVhdMountPath(void*, void*)")
# 呼び出し: HcsGetLayerVhdMountPath(vhdHandle, mountPath)
# vhdHandle : HANDLE -> "void*"
# mountPath : LPWSTR* 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)。

const std = @import("std");

extern "computestorage" fn HcsGetLayerVhdMountPath(
    vhdHandle: ?*anyopaque, // HANDLE
    mountPath: [*c][*c]u16 // LPWSTR* out
) callconv(std.os.windows.WINAPI) i32;

proc HcsGetLayerVhdMountPath(
    vhdHandle: pointer,  # HANDLE
    mountPath: ptr WideCString  # LPWSTR* out
): int32 {.importc: "HcsGetLayerVhdMountPath", stdcall, dynlib: "computestorage.dll".}

pragma(lib, "computestorage");
extern(Windows)
int HcsGetLayerVhdMountPath(
    void* vhdHandle,   // HANDLE
    wchar** mountPath   // LPWSTR* out
);

ccall((:HcsGetLayerVhdMountPath, "computestorage.dll"), stdcall, Int32,
      (Ptr{Cvoid}, Ptr{Ptr{UInt16}}),
      vhdHandle, mountPath)
# vhdHandle : HANDLE -> Ptr{Cvoid}
# mountPath : LPWSTR* out -> Ptr{Ptr{UInt16}}
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
int32_t HcsGetLayerVhdMountPath(
    void* vhdHandle,
    uint16_t** mountPath);
]]
local computestorage = ffi.load("computestorage")
-- computestorage.HcsGetLayerVhdMountPath(vhdHandle, mountPath)
-- vhdHandle : HANDLE
-- mountPath : LPWSTR* out
-- 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('computestorage.dll');
const HcsGetLayerVhdMountPath = lib.func('__stdcall', 'HcsGetLayerVhdMountPath', 'int32_t', ['void *', 'void *']);
// HcsGetLayerVhdMountPath(vhdHandle, mountPath)
// vhdHandle : HANDLE -> 'void *'
// mountPath : LPWSTR* out -> 'void *'
// 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("computestorage.dll", {
  HcsGetLayerVhdMountPath: { parameters: ["pointer", "pointer"], result: "i32" },
});
// lib.symbols.HcsGetLayerVhdMountPath(vhdHandle, mountPath)
// vhdHandle : HANDLE -> "pointer"
// mountPath : LPWSTR* out -> "pointer"
// 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
int32_t HcsGetLayerVhdMountPath(
    void* vhdHandle,
    uint16_t** mountPath);
C, "computestorage.dll");
// $ffi->HcsGetLayerVhdMountPath(vhdHandle, mountPath);
// vhdHandle : HANDLE
// mountPath : LPWSTR* out
// 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 Computestorage extends StdCallLibrary {
    Computestorage INSTANCE = Native.load("computestorage", Computestorage.class);
    int HcsGetLayerVhdMountPath(
        Pointer vhdHandle,   // HANDLE
        PointerByReference mountPath   // LPWSTR* out
    );
}

@[Link("computestorage")]
lib Libcomputestorage
  fun HcsGetLayerVhdMountPath = HcsGetLayerVhdMountPath(
    vhdHandle : Void*,   # HANDLE
    mountPath : UInt16**   # LPWSTR* out
  ) : Int32
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 HcsGetLayerVhdMountPathNative = Int32 Function(Pointer<Void>, Pointer<Pointer<Utf16>>);
typedef HcsGetLayerVhdMountPathDart = int Function(Pointer<Void>, Pointer<Pointer<Utf16>>);
final HcsGetLayerVhdMountPath = DynamicLibrary.open('computestorage.dll')
    .lookupFunction<HcsGetLayerVhdMountPathNative, HcsGetLayerVhdMountPathDart>('HcsGetLayerVhdMountPath');
// vhdHandle : HANDLE -> Pointer<Void>
// mountPath : LPWSTR* out -> Pointer<Pointer<Utf16>>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function HcsGetLayerVhdMountPath(
  vhdHandle: THandle;   // HANDLE
  mountPath: PPWideChar   // LPWSTR* out
): Integer; stdcall;
  external 'computestorage.dll' name 'HcsGetLayerVhdMountPath';

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

foreign import stdcall safe "HcsGetLayerVhdMountPath"
  c_HcsGetLayerVhdMountPath :: Ptr () -> Ptr CWString -> IO Int32
-- vhdHandle : HANDLE -> Ptr ()
-- mountPath : LPWSTR* out -> Ptr CWString
-- 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 hcsgetlayervhdmountpath =
  foreign "HcsGetLayerVhdMountPath"
    ((ptr void) @-> (ptr (ptr uint16_t)) @-> returning int32_t)
(* vhdHandle : HANDLE -> (ptr void) *)
(* mountPath : LPWSTR* out -> (ptr (ptr uint16_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 computestorage (t "computestorage.dll"))
(cffi:use-foreign-library computestorage)

(cffi:defcfun ("HcsGetLayerVhdMountPath" hcs-get-layer-vhd-mount-path :convention :stdcall) :int32
  (vhd-handle :pointer)   ; HANDLE
  (mount-path :pointer))   ; LPWSTR* out
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $HcsGetLayerVhdMountPath = Win32::API::More->new('computestorage',
    'int HcsGetLayerVhdMountPath(HANDLE vhdHandle, LPVOID mountPath)');
# my $ret = $HcsGetLayerVhdMountPath->Call($vhdHandle, $mountPath);
# vhdHandle : HANDLE -> HANDLE
# mountPath : LPWSTR* out -> LPVOID
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。