VarUI8FromCy

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

HRESULT VarUI8FromCy(
    CY cyIn,
    ULONGLONG* pi64Out
);

<DllImport("OLEAUT32.dll", ExactSpelling:=True)>
Public Shared Function VarUI8FromCy(
    cyIn As CY,   ' CY
    <Out> ByRef pi64Out As ULong   ' ULONGLONG* out
) As Integer
End Function

' cyIn : CY
' pi64Out : ULONGLONG* out
Declare PtrSafe Function VarUI8FromCy Lib "oleaut32" ( _
    ByVal cyIn As LongPtr, _
    ByRef pi64Out As LongLong) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

VarUI8FromCy = ctypes.windll.oleaut32.VarUI8FromCy
VarUI8FromCy.restype = ctypes.c_int
VarUI8FromCy.argtypes = [
    CY,  # cyIn : CY
    ctypes.POINTER(ctypes.c_ulonglong),  # pi64Out : ULONGLONG* out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('OLEAUT32.dll')
VarUI8FromCy = Fiddle::Function.new(
  lib['VarUI8FromCy'],
  [
    Fiddle::TYPE_VOIDP,  # cyIn : CY
    Fiddle::TYPE_VOIDP,  # pi64Out : ULONGLONG* out
  ],
  Fiddle::TYPE_INT)

#[link(name = "oleaut32")]
extern "system" {
    fn VarUI8FromCy(
        cyIn: CY,  // CY
        pi64Out: *mut u64  // ULONGLONG* out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("OLEAUT32.dll")]
public static extern int VarUI8FromCy(CY cyIn, out ulong pi64Out);
"@
$api = Add-Type -MemberDefinition $sig -Name 'OLEAUT32_VarUI8FromCy' -Namespace Win32 -PassThru
# $api::VarUI8FromCy(cyIn, pi64Out)

#uselib "OLEAUT32.dll"
#func global VarUI8FromCy "VarUI8FromCy" sptr, sptr
; VarUI8FromCy cyIn, varptr(pi64Out)   ; 戻り値は stat
; cyIn : CY -> "sptr"
; pi64Out : ULONGLONG* 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 VarUI8FromCy "VarUI8FromCy" int, var
; res = VarUI8FromCy(cyIn, pi64Out)
; cyIn : CY -> "int"
; pi64Out : ULONGLONG* 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 VarUI8FromCy(CY cyIn, ULONGLONG* pi64Out)
#uselib "OLEAUT32.dll"
#cfunc global VarUI8FromCy "VarUI8FromCy" int, var
; res = VarUI8FromCy(cyIn, pi64Out)
; cyIn : CY -> "int"
; pi64Out : ULONGLONG* 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")
	procVarUI8FromCy = oleaut32.NewProc("VarUI8FromCy")
)

// cyIn (CY), pi64Out (ULONGLONG* out)
r1, _, err := procVarUI8FromCy.Call(
	uintptr(cyIn),
	uintptr(pi64Out),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function VarUI8FromCy(
  cyIn: CY;   // CY
  pi64Out: Pointer   // ULONGLONG* out
): Integer; stdcall;
  external 'OLEAUT32.dll' name 'VarUI8FromCy';

result := DllCall("OLEAUT32\VarUI8FromCy"
    , "Ptr", cyIn   ; CY
    , "Ptr", pi64Out   ; ULONGLONG* out
    , "Int")   ; return: HRESULT

●VarUI8FromCy(cyIn, pi64Out) = DLL("OLEAUT32.dll", "int VarUI8FromCy(void*, void*)")
# 呼び出し: VarUI8FromCy(cyIn, pi64Out)
# cyIn : CY -> "void*"
# pi64Out : ULONGLONG* 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)。