VarCyRound

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

HRESULT VarCyRound(
    CY cyIn,
    INT cDecimals,
    CY* pcyResult
);

<DllImport("OLEAUT32.dll", ExactSpelling:=True)>
Public Shared Function VarCyRound(
    cyIn As CY,   ' CY
    cDecimals As Integer,   ' INT
    pcyResult As IntPtr   ' CY* out
) As Integer
End Function

' cyIn : CY
' cDecimals : INT
' pcyResult : CY* out
Declare PtrSafe Function VarCyRound Lib "oleaut32" ( _
    ByVal cyIn As LongPtr, _
    ByVal cDecimals As Long, _
    ByVal pcyResult 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

VarCyRound = ctypes.windll.oleaut32.VarCyRound
VarCyRound.restype = ctypes.c_int
VarCyRound.argtypes = [
    CY,  # cyIn : CY
    ctypes.c_int,  # cDecimals : INT
    ctypes.c_void_p,  # pcyResult : CY* out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('OLEAUT32.dll')
VarCyRound = Fiddle::Function.new(
  lib['VarCyRound'],
  [
    Fiddle::TYPE_VOIDP,  # cyIn : CY
    Fiddle::TYPE_INT,  # cDecimals : INT
    Fiddle::TYPE_VOIDP,  # pcyResult : CY* out
  ],
  Fiddle::TYPE_INT)

#[link(name = "oleaut32")]
extern "system" {
    fn VarCyRound(
        cyIn: CY,  // CY
        cDecimals: i32,  // INT
        pcyResult: *mut CY  // CY* out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("OLEAUT32.dll")]
public static extern int VarCyRound(CY cyIn, int cDecimals, IntPtr pcyResult);
"@
$api = Add-Type -MemberDefinition $sig -Name 'OLEAUT32_VarCyRound' -Namespace Win32 -PassThru
# $api::VarCyRound(cyIn, cDecimals, pcyResult)

#uselib "OLEAUT32.dll"
#func global VarCyRound "VarCyRound" sptr, sptr, sptr
; VarCyRound cyIn, cDecimals, varptr(pcyResult)   ; 戻り値は stat
; cyIn : CY -> "sptr"
; cDecimals : INT -> "sptr"
; pcyResult : CY* out -> "sptr"
; ※値渡し構造体は直接渡せません。intにパック、または var で構造体変数を渡してください。
; ※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 "OLEAUT32.dll"
#cfunc global VarCyRound "VarCyRound" int, int, var
; res = VarCyRound(cyIn, cDecimals, pcyResult)
; cyIn : CY -> "int"
; cDecimals : INT -> "int"
; pcyResult : CY* out -> "var"
; ※値渡し構造体は直接渡せません。intにパック、または var で構造体変数を渡してください。
; ※出力/バッファ引数は var 方式(変数を直接渡す)。varptr 方式にも切替可。

; HRESULT VarCyRound(CY cyIn, INT cDecimals, CY* pcyResult)
#uselib "OLEAUT32.dll"
#cfunc global VarCyRound "VarCyRound" int, int, var
; res = VarCyRound(cyIn, cDecimals, pcyResult)
; cyIn : CY -> "int"
; cDecimals : INT -> "int"
; pcyResult : CY* out -> "var"
; ※値渡し構造体は直接渡せません。intにパック、または var で構造体変数を渡してください。
; ※出力/バッファ引数は var 方式(変数を直接渡す)。varptr 方式にも切替可。

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

var (
	oleaut32 = windows.NewLazySystemDLL("OLEAUT32.dll")
	procVarCyRound = oleaut32.NewProc("VarCyRound")
)

// cyIn (CY), cDecimals (INT), pcyResult (CY* out)
r1, _, err := procVarCyRound.Call(
	uintptr(cyIn),
	uintptr(cDecimals),
	uintptr(pcyResult),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function VarCyRound(
  cyIn: CY;   // CY
  cDecimals: Integer;   // INT
  pcyResult: Pointer   // CY* out
): Integer; stdcall;
  external 'OLEAUT32.dll' name 'VarCyRound';

result := DllCall("OLEAUT32\VarCyRound"
    , "Ptr", cyIn   ; CY
    , "Int", cDecimals   ; INT
    , "Ptr", pcyResult   ; CY* out
    , "Int")   ; return: HRESULT

●VarCyRound(cyIn, cDecimals, pcyResult) = DLL("OLEAUT32.dll", "int VarCyRound(void*, int, void*)")
# 呼び出し: VarCyRound(cyIn, cDecimals, pcyResult)
# cyIn : CY -> "void*"
# cDecimals : INT -> "int"
# pcyResult : CY* 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)。