VarCmp

// OLEAUT32.dll
#include <windows.h>

VARCMP VarCmp(
    VARIANT* pvarLeft,
    VARIANT* pvarRight,
    DWORD lcid,
    DWORD dwFlags
);

<DllImport("OLEAUT32.dll", ExactSpelling:=True)>
Public Shared Function VarCmp(
    pvarLeft As IntPtr,   ' VARIANT*
    pvarRight As IntPtr,   ' VARIANT*
    lcid As UInteger,   ' DWORD
    dwFlags As UInteger   ' DWORD
) As UInteger
End Function

' pvarLeft : VARIANT*
' pvarRight : VARIANT*
' lcid : DWORD
' dwFlags : DWORD
Declare PtrSafe Function VarCmp Lib "oleaut32" ( _
    ByVal pvarLeft As LongPtr, _
    ByVal pvarRight As LongPtr, _
    ByVal lcid As Long, _
    ByVal dwFlags 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

VarCmp = ctypes.windll.oleaut32.VarCmp
VarCmp.restype = wintypes.DWORD
VarCmp.argtypes = [
    ctypes.c_void_p,  # pvarLeft : VARIANT*
    ctypes.c_void_p,  # pvarRight : VARIANT*
    wintypes.DWORD,  # lcid : DWORD
    wintypes.DWORD,  # dwFlags : DWORD
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('OLEAUT32.dll')
VarCmp = Fiddle::Function.new(
  lib['VarCmp'],
  [
    Fiddle::TYPE_VOIDP,  # pvarLeft : VARIANT*
    Fiddle::TYPE_VOIDP,  # pvarRight : VARIANT*
    -Fiddle::TYPE_INT,  # lcid : DWORD
    -Fiddle::TYPE_INT,  # dwFlags : DWORD
  ],
  -Fiddle::TYPE_INT)

#[link(name = "oleaut32")]
extern "system" {
    fn VarCmp(
        pvarLeft: *mut VARIANT,  // VARIANT*
        pvarRight: *mut VARIANT,  // VARIANT*
        lcid: u32,  // DWORD
        dwFlags: u32  // DWORD
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("OLEAUT32.dll")]
public static extern uint VarCmp(IntPtr pvarLeft, IntPtr pvarRight, uint lcid, uint dwFlags);
"@
$api = Add-Type -MemberDefinition $sig -Name 'OLEAUT32_VarCmp' -Namespace Win32 -PassThru
# $api::VarCmp(pvarLeft, pvarRight, lcid, dwFlags)

#uselib "OLEAUT32.dll"
#func global VarCmp "VarCmp" sptr, sptr, sptr, sptr
; VarCmp varptr(pvarLeft), varptr(pvarRight), lcid, dwFlags   ; 戻り値は stat
; pvarLeft : VARIANT* -> "sptr"
; pvarRight : VARIANT* -> "sptr"
; lcid : DWORD -> "sptr"
; dwFlags : DWORD -> "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 (
	oleaut32 = windows.NewLazySystemDLL("OLEAUT32.dll")
	procVarCmp = oleaut32.NewProc("VarCmp")
)

// pvarLeft (VARIANT*), pvarRight (VARIANT*), lcid (DWORD), dwFlags (DWORD)
r1, _, err := procVarCmp.Call(
	uintptr(pvarLeft),
	uintptr(pvarRight),
	uintptr(lcid),
	uintptr(dwFlags),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // VARCMP

function VarCmp(
  pvarLeft: Pointer;   // VARIANT*
  pvarRight: Pointer;   // VARIANT*
  lcid: DWORD;   // DWORD
  dwFlags: DWORD   // DWORD
): DWORD; stdcall;
  external 'OLEAUT32.dll' name 'VarCmp';

result := DllCall("OLEAUT32\VarCmp"
    , "Ptr", pvarLeft   ; VARIANT*
    , "Ptr", pvarRight   ; VARIANT*
    , "UInt", lcid   ; DWORD
    , "UInt", dwFlags   ; DWORD
    , "UInt")   ; return: VARCMP

●VarCmp(pvarLeft, pvarRight, lcid, dwFlags) = DLL("OLEAUT32.dll", "dword VarCmp(void*, void*, dword, dword)")
# 呼び出し: VarCmp(pvarLeft, pvarRight, lcid, dwFlags)
# pvarLeft : VARIANT* -> "void*"
# pvarRight : VARIANT* -> "void*"
# lcid : DWORD -> "dword"
# dwFlags : DWORD -> "dword"
# 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 "oleaut32" fn VarCmp(
    pvarLeft: [*c]VARIANT, // VARIANT*
    pvarRight: [*c]VARIANT, // VARIANT*
    lcid: u32, // DWORD
    dwFlags: u32 // DWORD
) callconv(std.os.windows.WINAPI) u32;

proc VarCmp(
    pvarLeft: ptr VARIANT,  # VARIANT*
    pvarRight: ptr VARIANT,  # VARIANT*
    lcid: uint32,  # DWORD
    dwFlags: uint32  # DWORD
): uint32 {.importc: "VarCmp", stdcall, dynlib: "OLEAUT32.dll".}

pragma(lib, "oleaut32");
extern(Windows)
uint VarCmp(
    VARIANT* pvarLeft,   // VARIANT*
    VARIANT* pvarRight,   // VARIANT*
    uint lcid,   // DWORD
    uint dwFlags   // DWORD
);

ccall((:VarCmp, "OLEAUT32.dll"), stdcall, UInt32,
      (Ptr{VARIANT}, Ptr{VARIANT}, UInt32, UInt32),
      pvarLeft, pvarRight, lcid, dwFlags)
# pvarLeft : VARIANT* -> Ptr{VARIANT}
# pvarRight : VARIANT* -> Ptr{VARIANT}
# lcid : DWORD -> UInt32
# dwFlags : DWORD -> UInt32
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
uint32_t VarCmp(
    void* pvarLeft,
    void* pvarRight,
    uint32_t lcid,
    uint32_t dwFlags);
]]
local oleaut32 = ffi.load("oleaut32")
-- oleaut32.VarCmp(pvarLeft, pvarRight, lcid, dwFlags)
-- pvarLeft : VARIANT*
-- pvarRight : VARIANT*
-- lcid : DWORD
-- dwFlags : DWORD
-- 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('OLEAUT32.dll');
const VarCmp = lib.func('__stdcall', 'VarCmp', 'uint32_t', ['void *', 'void *', 'uint32_t', 'uint32_t']);
// VarCmp(pvarLeft, pvarRight, lcid, dwFlags)
// pvarLeft : VARIANT* -> 'void *'
// pvarRight : VARIANT* -> 'void *'
// lcid : DWORD -> 'uint32_t'
// dwFlags : DWORD -> '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("OLEAUT32.dll", {
  VarCmp: { parameters: ["pointer", "pointer", "u32", "u32"], result: "u32" },
});
// lib.symbols.VarCmp(pvarLeft, pvarRight, lcid, dwFlags)
// pvarLeft : VARIANT* -> "pointer"
// pvarRight : VARIANT* -> "pointer"
// lcid : DWORD -> "u32"
// dwFlags : DWORD -> "u32"
// 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
uint32_t VarCmp(
    void* pvarLeft,
    void* pvarRight,
    uint32_t lcid,
    uint32_t dwFlags);
C, "OLEAUT32.dll");
// $ffi->VarCmp(pvarLeft, pvarRight, lcid, dwFlags);
// pvarLeft : VARIANT*
// pvarRight : VARIANT*
// lcid : DWORD
// dwFlags : DWORD
// 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 Oleaut32 extends StdCallLibrary {
    Oleaut32 INSTANCE = Native.load("oleaut32", Oleaut32.class);
    int VarCmp(
        Pointer pvarLeft,   // VARIANT*
        Pointer pvarRight,   // VARIANT*
        int lcid,   // DWORD
        int dwFlags   // DWORD
    );
}

@[Link("oleaut32")]
lib LibOLEAUT32
  fun VarCmp = VarCmp(
    pvarLeft : VARIANT*,   # VARIANT*
    pvarRight : VARIANT*,   # VARIANT*
    lcid : UInt32,   # DWORD
    dwFlags : UInt32   # DWORD
  ) : UInt32
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 VarCmpNative = Uint32 Function(Pointer<Void>, Pointer<Void>, Uint32, Uint32);
typedef VarCmpDart = int Function(Pointer<Void>, Pointer<Void>, int, int);
final VarCmp = DynamicLibrary.open('OLEAUT32.dll')
    .lookupFunction<VarCmpNative, VarCmpDart>('VarCmp');
// pvarLeft : VARIANT* -> Pointer<Void>
// pvarRight : VARIANT* -> Pointer<Void>
// lcid : DWORD -> Uint32
// dwFlags : DWORD -> Uint32
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function VarCmp(
  pvarLeft: Pointer;   // VARIANT*
  pvarRight: Pointer;   // VARIANT*
  lcid: DWORD;   // DWORD
  dwFlags: DWORD   // DWORD
): DWORD; stdcall;
  external 'OLEAUT32.dll' name 'VarCmp';

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

foreign import stdcall safe "VarCmp"
  c_VarCmp :: Ptr () -> Ptr () -> Word32 -> Word32 -> IO Word32
-- pvarLeft : VARIANT* -> Ptr ()
-- pvarRight : VARIANT* -> Ptr ()
-- lcid : DWORD -> Word32
-- dwFlags : DWORD -> 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 varcmp =
  foreign "VarCmp"
    ((ptr void) @-> (ptr void) @-> uint32_t @-> uint32_t @-> returning uint32_t)
(* pvarLeft : VARIANT* -> (ptr void) *)
(* pvarRight : VARIANT* -> (ptr void) *)
(* lcid : DWORD -> uint32_t *)
(* dwFlags : DWORD -> 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 oleaut32 (t "OLEAUT32.dll"))
(cffi:use-foreign-library oleaut32)

(cffi:defcfun ("VarCmp" var-cmp :convention :stdcall) :uint32
  (pvar-left :pointer)   ; VARIANT*
  (pvar-right :pointer)   ; VARIANT*
  (lcid :uint32)   ; DWORD
  (dw-flags :uint32))   ; DWORD
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $VarCmp = Win32::API::More->new('OLEAUT32',
    'DWORD VarCmp(LPVOID pvarLeft, LPVOID pvarRight, DWORD lcid, DWORD dwFlags)');
# my $ret = $VarCmp->Call($pvarLeft, $pvarRight, $lcid, $dwFlags);
# pvarLeft : VARIANT* -> LPVOID
# pvarRight : VARIANT* -> LPVOID
# lcid : DWORD -> DWORD
# dwFlags : DWORD -> DWORD
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。