GetVpCount

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

HRESULT GetVpCount(
    void* vmSavedStateDumpHandle,
    DWORD* vpCount
);

<DllImport("VmSavedStateDumpProvider.dll", ExactSpelling:=True)>
Public Shared Function GetVpCount(
    vmSavedStateDumpHandle As IntPtr,   ' void* in/out
    <Out> ByRef vpCount As UInteger   ' DWORD* out
) As Integer
End Function

' vmSavedStateDumpHandle : void* in/out
' vpCount : DWORD* out
Declare PtrSafe Function GetVpCount Lib "vmsavedstatedumpprovider" ( _
    ByVal vmSavedStateDumpHandle As LongPtr, _
    ByRef vpCount 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

GetVpCount = ctypes.windll.vmsavedstatedumpprovider.GetVpCount
GetVpCount.restype = ctypes.c_int
GetVpCount.argtypes = [
    ctypes.POINTER(None),  # vmSavedStateDumpHandle : void* in/out
    ctypes.POINTER(wintypes.DWORD),  # vpCount : DWORD* out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('VmSavedStateDumpProvider.dll')
GetVpCount = Fiddle::Function.new(
  lib['GetVpCount'],
  [
    Fiddle::TYPE_VOIDP,  # vmSavedStateDumpHandle : void* in/out
    Fiddle::TYPE_VOIDP,  # vpCount : DWORD* out
  ],
  Fiddle::TYPE_INT)

#[link(name = "vmsavedstatedumpprovider")]
extern "system" {
    fn GetVpCount(
        vmSavedStateDumpHandle: *mut (),  // void* in/out
        vpCount: *mut u32  // DWORD* out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("VmSavedStateDumpProvider.dll")]
public static extern int GetVpCount(IntPtr vmSavedStateDumpHandle, out uint vpCount);
"@
$api = Add-Type -MemberDefinition $sig -Name 'VmSavedStateDumpProvider_GetVpCount' -Namespace Win32 -PassThru
# $api::GetVpCount(vmSavedStateDumpHandle, vpCount)

#uselib "VmSavedStateDumpProvider.dll"
#func global GetVpCount "GetVpCount" sptr, sptr
; GetVpCount vmSavedStateDumpHandle, varptr(vpCount)   ; 戻り値は stat
; vmSavedStateDumpHandle : void* in/out -> "sptr"
; vpCount : DWORD* 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 (
	vmsavedstatedumpprovider = windows.NewLazySystemDLL("VmSavedStateDumpProvider.dll")
	procGetVpCount = vmsavedstatedumpprovider.NewProc("GetVpCount")
)

// vmSavedStateDumpHandle (void* in/out), vpCount (DWORD* out)
r1, _, err := procGetVpCount.Call(
	uintptr(vmSavedStateDumpHandle),
	uintptr(vpCount),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function GetVpCount(
  vmSavedStateDumpHandle: Pointer;   // void* in/out
  vpCount: Pointer   // DWORD* out
): Integer; stdcall;
  external 'VmSavedStateDumpProvider.dll' name 'GetVpCount';

result := DllCall("VmSavedStateDumpProvider\GetVpCount"
    , "Ptr", vmSavedStateDumpHandle   ; void* in/out
    , "Ptr", vpCount   ; DWORD* out
    , "Int")   ; return: HRESULT

●GetVpCount(vmSavedStateDumpHandle, vpCount) = DLL("VmSavedStateDumpProvider.dll", "int GetVpCount(void*, void*)")
# 呼び出し: GetVpCount(vmSavedStateDumpHandle, vpCount)
# vmSavedStateDumpHandle : void* in/out -> "void*"
# vpCount : DWORD* 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 "vmsavedstatedumpprovider" fn GetVpCount(
    vmSavedStateDumpHandle: ?*anyopaque, // void* in/out
    vpCount: [*c]u32 // DWORD* out
) callconv(std.os.windows.WINAPI) i32;

proc GetVpCount(
    vmSavedStateDumpHandle: pointer,  # void* in/out
    vpCount: ptr uint32  # DWORD* out
): int32 {.importc: "GetVpCount", stdcall, dynlib: "VmSavedStateDumpProvider.dll".}

pragma(lib, "vmsavedstatedumpprovider");
extern(Windows)
int GetVpCount(
    void* vmSavedStateDumpHandle,   // void* in/out
    uint* vpCount   // DWORD* out
);

ccall((:GetVpCount, "VmSavedStateDumpProvider.dll"), stdcall, Int32,
      (Ptr{Cvoid}, Ptr{UInt32}),
      vmSavedStateDumpHandle, vpCount)
# vmSavedStateDumpHandle : void* in/out -> Ptr{Cvoid}
# vpCount : DWORD* out -> Ptr{UInt32}
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
int32_t GetVpCount(
    void* vmSavedStateDumpHandle,
    uint32_t* vpCount);
]]
local vmsavedstatedumpprovider = ffi.load("vmsavedstatedumpprovider")
-- vmsavedstatedumpprovider.GetVpCount(vmSavedStateDumpHandle, vpCount)
-- vmSavedStateDumpHandle : void* in/out
-- vpCount : DWORD* 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('VmSavedStateDumpProvider.dll');
const GetVpCount = lib.func('__stdcall', 'GetVpCount', 'int32_t', ['void *', 'uint32_t *']);
// GetVpCount(vmSavedStateDumpHandle, vpCount)
// vmSavedStateDumpHandle : void* in/out -> 'void *'
// vpCount : DWORD* out -> 'uint32_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("VmSavedStateDumpProvider.dll", {
  GetVpCount: { parameters: ["pointer", "pointer"], result: "i32" },
});
// lib.symbols.GetVpCount(vmSavedStateDumpHandle, vpCount)
// vmSavedStateDumpHandle : void* in/out -> "pointer"
// vpCount : DWORD* 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 GetVpCount(
    void* vmSavedStateDumpHandle,
    uint32_t* vpCount);
C, "VmSavedStateDumpProvider.dll");
// $ffi->GetVpCount(vmSavedStateDumpHandle, vpCount);
// vmSavedStateDumpHandle : void* in/out
// vpCount : DWORD* 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 Vmsavedstatedumpprovider extends StdCallLibrary {
    Vmsavedstatedumpprovider INSTANCE = Native.load("vmsavedstatedumpprovider", Vmsavedstatedumpprovider.class);
    int GetVpCount(
        Pointer vmSavedStateDumpHandle,   // void* in/out
        IntByReference vpCount   // DWORD* out
    );
}

@[Link("vmsavedstatedumpprovider")]
lib LibVmSavedStateDumpProvider
  fun GetVpCount = GetVpCount(
    vmSavedStateDumpHandle : Void*,   # void* in/out
    vpCount : UInt32*   # DWORD* 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 GetVpCountNative = Int32 Function(Pointer<Void>, Pointer<Uint32>);
typedef GetVpCountDart = int Function(Pointer<Void>, Pointer<Uint32>);
final GetVpCount = DynamicLibrary.open('VmSavedStateDumpProvider.dll')
    .lookupFunction<GetVpCountNative, GetVpCountDart>('GetVpCount');
// vmSavedStateDumpHandle : void* in/out -> Pointer<Void>
// vpCount : DWORD* out -> Pointer<Uint32>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function GetVpCount(
  vmSavedStateDumpHandle: Pointer;   // void* in/out
  vpCount: Pointer   // DWORD* out
): Integer; stdcall;
  external 'VmSavedStateDumpProvider.dll' name 'GetVpCount';

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

foreign import stdcall safe "GetVpCount"
  c_GetVpCount :: Ptr () -> Ptr Word32 -> IO Int32
-- vmSavedStateDumpHandle : void* in/out -> Ptr ()
-- vpCount : DWORD* out -> Ptr Word32
-- 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 getvpcount =
  foreign "GetVpCount"
    ((ptr void) @-> (ptr uint32_t) @-> returning int32_t)
(* vmSavedStateDumpHandle : void* in/out -> (ptr void) *)
(* vpCount : DWORD* out -> (ptr uint32_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 vmsavedstatedumpprovider (t "VmSavedStateDumpProvider.dll"))
(cffi:use-foreign-library vmsavedstatedumpprovider)

(cffi:defcfun ("GetVpCount" get-vp-count :convention :stdcall) :int32
  (vm-saved-state-dump-handle :pointer)   ; void* in/out
  (vp-count :pointer))   ; DWORD* out
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $GetVpCount = Win32::API::More->new('VmSavedStateDumpProvider',
    'int GetVpCount(LPVOID vmSavedStateDumpHandle, LPVOID vpCount)');
# my $ret = $GetVpCount->Call($vmSavedStateDumpHandle, $vpCount);
# vmSavedStateDumpHandle : void* in/out -> LPVOID
# vpCount : DWORD* out -> LPVOID
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。