VarDateFromBool

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

HRESULT VarDateFromBool(
    VARIANT_BOOL boolIn,
    DOUBLE* pdateOut
);

<DllImport("OLEAUT32.dll", ExactSpelling:=True)>
Public Shared Function VarDateFromBool(
    boolIn As Short,   ' VARIANT_BOOL
    <Out> ByRef pdateOut As Double   ' DOUBLE* out
) As Integer
End Function

' boolIn : VARIANT_BOOL
' pdateOut : DOUBLE* out
Declare PtrSafe Function VarDateFromBool Lib "oleaut32" ( _
    ByVal boolIn As Integer, _
    ByRef pdateOut As Double) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

VarDateFromBool = ctypes.windll.oleaut32.VarDateFromBool
VarDateFromBool.restype = ctypes.c_int
VarDateFromBool.argtypes = [
    ctypes.c_short,  # boolIn : VARIANT_BOOL
    ctypes.POINTER(ctypes.c_double),  # pdateOut : DOUBLE* out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('OLEAUT32.dll')
VarDateFromBool = Fiddle::Function.new(
  lib['VarDateFromBool'],
  [
    Fiddle::TYPE_SHORT,  # boolIn : VARIANT_BOOL
    Fiddle::TYPE_VOIDP,  # pdateOut : DOUBLE* out
  ],
  Fiddle::TYPE_INT)

#[link(name = "oleaut32")]
extern "system" {
    fn VarDateFromBool(
        boolIn: i16,  // VARIANT_BOOL
        pdateOut: *mut f64  // DOUBLE* out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("OLEAUT32.dll")]
public static extern int VarDateFromBool(short boolIn, out double pdateOut);
"@
$api = Add-Type -MemberDefinition $sig -Name 'OLEAUT32_VarDateFromBool' -Namespace Win32 -PassThru
# $api::VarDateFromBool(boolIn, pdateOut)

#uselib "OLEAUT32.dll"
#func global VarDateFromBool "VarDateFromBool" sptr, sptr
; VarDateFromBool boolIn, varptr(pdateOut)   ; 戻り値は stat
; boolIn : VARIANT_BOOL -> "sptr"
; pdateOut : DOUBLE* 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 (
	oleaut32 = windows.NewLazySystemDLL("OLEAUT32.dll")
	procVarDateFromBool = oleaut32.NewProc("VarDateFromBool")
)

// boolIn (VARIANT_BOOL), pdateOut (DOUBLE* out)
r1, _, err := procVarDateFromBool.Call(
	uintptr(boolIn),
	uintptr(pdateOut),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function VarDateFromBool(
  boolIn: Smallint;   // VARIANT_BOOL
  pdateOut: Pointer   // DOUBLE* out
): Integer; stdcall;
  external 'OLEAUT32.dll' name 'VarDateFromBool';

result := DllCall("OLEAUT32\VarDateFromBool"
    , "Short", boolIn   ; VARIANT_BOOL
    , "Ptr", pdateOut   ; DOUBLE* out
    , "Int")   ; return: HRESULT

●VarDateFromBool(boolIn, pdateOut) = DLL("OLEAUT32.dll", "int VarDateFromBool(int, void*)")
# 呼び出し: VarDateFromBool(boolIn, pdateOut)
# boolIn : VARIANT_BOOL -> "int"
# pdateOut : DOUBLE* 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 "oleaut32" fn VarDateFromBool(
    boolIn: i16, // VARIANT_BOOL
    pdateOut: [*c]f64 // DOUBLE* out
) callconv(std.os.windows.WINAPI) i32;

proc VarDateFromBool(
    boolIn: int16,  # VARIANT_BOOL
    pdateOut: ptr float64  # DOUBLE* out
): int32 {.importc: "VarDateFromBool", stdcall, dynlib: "OLEAUT32.dll".}

pragma(lib, "oleaut32");
extern(Windows)
int VarDateFromBool(
    short boolIn,   // VARIANT_BOOL
    double* pdateOut   // DOUBLE* out
);

ccall((:VarDateFromBool, "OLEAUT32.dll"), stdcall, Int32,
      (Int16, Ptr{Float64}),
      boolIn, pdateOut)
# boolIn : VARIANT_BOOL -> Int16
# pdateOut : DOUBLE* out -> Ptr{Float64}
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
int32_t VarDateFromBool(
    int16_t boolIn,
    double* pdateOut);
]]
local oleaut32 = ffi.load("oleaut32")
-- oleaut32.VarDateFromBool(boolIn, pdateOut)
-- boolIn : VARIANT_BOOL
-- pdateOut : DOUBLE* 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('OLEAUT32.dll');
const VarDateFromBool = lib.func('__stdcall', 'VarDateFromBool', 'int32_t', ['int16_t', 'double *']);
// VarDateFromBool(boolIn, pdateOut)
// boolIn : VARIANT_BOOL -> 'int16_t'
// pdateOut : DOUBLE* out -> 'double *'
// 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", {
  VarDateFromBool: { parameters: ["i16", "pointer"], result: "i32" },
});
// lib.symbols.VarDateFromBool(boolIn, pdateOut)
// boolIn : VARIANT_BOOL -> "i16"
// pdateOut : DOUBLE* 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 VarDateFromBool(
    int16_t boolIn,
    double* pdateOut);
C, "OLEAUT32.dll");
// $ffi->VarDateFromBool(boolIn, pdateOut);
// boolIn : VARIANT_BOOL
// pdateOut : DOUBLE* 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 Oleaut32 extends StdCallLibrary {
    Oleaut32 INSTANCE = Native.load("oleaut32", Oleaut32.class);
    int VarDateFromBool(
        short boolIn,   // VARIANT_BOOL
        DoubleByReference pdateOut   // DOUBLE* out
    );
}

@[Link("oleaut32")]
lib LibOLEAUT32
  fun VarDateFromBool = VarDateFromBool(
    boolIn : Int16,   # VARIANT_BOOL
    pdateOut : Float64*   # DOUBLE* 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 VarDateFromBoolNative = Int32 Function(Int16, Pointer<Double>);
typedef VarDateFromBoolDart = int Function(int, Pointer<Double>);
final VarDateFromBool = DynamicLibrary.open('OLEAUT32.dll')
    .lookupFunction<VarDateFromBoolNative, VarDateFromBoolDart>('VarDateFromBool');
// boolIn : VARIANT_BOOL -> Int16
// pdateOut : DOUBLE* out -> Pointer<Double>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function VarDateFromBool(
  boolIn: Smallint;   // VARIANT_BOOL
  pdateOut: Pointer   // DOUBLE* out
): Integer; stdcall;
  external 'OLEAUT32.dll' name 'VarDateFromBool';

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

foreign import stdcall safe "VarDateFromBool"
  c_VarDateFromBool :: Int16 -> Ptr CDouble -> IO Int32
-- boolIn : VARIANT_BOOL -> Int16
-- pdateOut : DOUBLE* out -> Ptr CDouble
-- 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 vardatefrombool =
  foreign "VarDateFromBool"
    (int16_t @-> (ptr double) @-> returning int32_t)
(* boolIn : VARIANT_BOOL -> int16_t *)
(* pdateOut : DOUBLE* out -> (ptr double) *)
(* 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 ("VarDateFromBool" var-date-from-bool :convention :stdcall) :int32
  (bool-in :int16)   ; VARIANT_BOOL
  (pdate-out :pointer))   ; DOUBLE* out
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $VarDateFromBool = Win32::API::More->new('OLEAUT32',
    'int VarDateFromBool(short boolIn, LPVOID pdateOut)');
# my $ret = $VarDateFromBool->Call($boolIn, $pdateOut);
# boolIn : VARIANT_BOOL -> short
# pdateOut : DOUBLE* out -> LPVOID
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。