VarFormatCurrency

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

HRESULT VarFormatCurrency(
    VARIANT* pvarIn,
    INT iNumDig,
    INT iIncLead,
    INT iUseParens,
    INT iGroup,
    DWORD dwFlags,
    LPWSTR* pbstrOut
);

<DllImport("OLEAUT32.dll", ExactSpelling:=True)>
Public Shared Function VarFormatCurrency(
    pvarIn As IntPtr,   ' VARIANT*
    iNumDig As Integer,   ' INT
    iIncLead As Integer,   ' INT
    iUseParens As Integer,   ' INT
    iGroup As Integer,   ' INT
    dwFlags As UInteger,   ' DWORD
    pbstrOut As IntPtr   ' LPWSTR* out
) As Integer
End Function

' pvarIn : VARIANT*
' iNumDig : INT
' iIncLead : INT
' iUseParens : INT
' iGroup : INT
' dwFlags : DWORD
' pbstrOut : LPWSTR* out
Declare PtrSafe Function VarFormatCurrency Lib "oleaut32" ( _
    ByVal pvarIn As LongPtr, _
    ByVal iNumDig As Long, _
    ByVal iIncLead As Long, _
    ByVal iUseParens As Long, _
    ByVal iGroup As Long, _
    ByVal dwFlags As Long, _
    ByVal pbstrOut 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

VarFormatCurrency = ctypes.windll.oleaut32.VarFormatCurrency
VarFormatCurrency.restype = ctypes.c_int
VarFormatCurrency.argtypes = [
    ctypes.c_void_p,  # pvarIn : VARIANT*
    ctypes.c_int,  # iNumDig : INT
    ctypes.c_int,  # iIncLead : INT
    ctypes.c_int,  # iUseParens : INT
    ctypes.c_int,  # iGroup : INT
    wintypes.DWORD,  # dwFlags : DWORD
    ctypes.c_void_p,  # pbstrOut : LPWSTR* out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('OLEAUT32.dll')
VarFormatCurrency = Fiddle::Function.new(
  lib['VarFormatCurrency'],
  [
    Fiddle::TYPE_VOIDP,  # pvarIn : VARIANT*
    Fiddle::TYPE_INT,  # iNumDig : INT
    Fiddle::TYPE_INT,  # iIncLead : INT
    Fiddle::TYPE_INT,  # iUseParens : INT
    Fiddle::TYPE_INT,  # iGroup : INT
    -Fiddle::TYPE_INT,  # dwFlags : DWORD
    Fiddle::TYPE_VOIDP,  # pbstrOut : LPWSTR* out
  ],
  Fiddle::TYPE_INT)

#[link(name = "oleaut32")]
extern "system" {
    fn VarFormatCurrency(
        pvarIn: *mut VARIANT,  // VARIANT*
        iNumDig: i32,  // INT
        iIncLead: i32,  // INT
        iUseParens: i32,  // INT
        iGroup: i32,  // INT
        dwFlags: u32,  // DWORD
        pbstrOut: *mut *mut u16  // LPWSTR* out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("OLEAUT32.dll")]
public static extern int VarFormatCurrency(IntPtr pvarIn, int iNumDig, int iIncLead, int iUseParens, int iGroup, uint dwFlags, IntPtr pbstrOut);
"@
$api = Add-Type -MemberDefinition $sig -Name 'OLEAUT32_VarFormatCurrency' -Namespace Win32 -PassThru
# $api::VarFormatCurrency(pvarIn, iNumDig, iIncLead, iUseParens, iGroup, dwFlags, pbstrOut)

#uselib "OLEAUT32.dll"
#func global VarFormatCurrency "VarFormatCurrency" sptr, sptr, sptr, sptr, sptr, sptr, sptr
; VarFormatCurrency varptr(pvarIn), iNumDig, iIncLead, iUseParens, iGroup, dwFlags, varptr(pbstrOut)   ; 戻り値は stat
; pvarIn : VARIANT* -> "sptr"
; iNumDig : INT -> "sptr"
; iIncLead : INT -> "sptr"
; iUseParens : INT -> "sptr"
; iGroup : INT -> "sptr"
; dwFlags : DWORD -> "sptr"
; pbstrOut : LPWSTR* 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。

#uselib "OLEAUT32.dll"
#cfunc global VarFormatCurrency "VarFormatCurrency" var, int, int, int, int, int, var
; res = VarFormatCurrency(pvarIn, iNumDig, iIncLead, iUseParens, iGroup, dwFlags, pbstrOut)
; pvarIn : VARIANT* -> "var"
; iNumDig : INT -> "int"
; iIncLead : INT -> "int"
; iUseParens : INT -> "int"
; iGroup : INT -> "int"
; dwFlags : DWORD -> "int"
; pbstrOut : LPWSTR* out -> "var"
; ※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 VarFormatCurrency(VARIANT* pvarIn, INT iNumDig, INT iIncLead, INT iUseParens, INT iGroup, DWORD dwFlags, LPWSTR* pbstrOut)
#uselib "OLEAUT32.dll"
#cfunc global VarFormatCurrency "VarFormatCurrency" var, int, int, int, int, int, var
; res = VarFormatCurrency(pvarIn, iNumDig, iIncLead, iUseParens, iGroup, dwFlags, pbstrOut)
; pvarIn : VARIANT* -> "var"
; iNumDig : INT -> "int"
; iIncLead : INT -> "int"
; iUseParens : INT -> "int"
; iGroup : INT -> "int"
; dwFlags : DWORD -> "int"
; pbstrOut : LPWSTR* out -> "var"
; ※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")
	procVarFormatCurrency = oleaut32.NewProc("VarFormatCurrency")
)

// pvarIn (VARIANT*), iNumDig (INT), iIncLead (INT), iUseParens (INT), iGroup (INT), dwFlags (DWORD), pbstrOut (LPWSTR* out)
r1, _, err := procVarFormatCurrency.Call(
	uintptr(pvarIn),
	uintptr(iNumDig),
	uintptr(iIncLead),
	uintptr(iUseParens),
	uintptr(iGroup),
	uintptr(dwFlags),
	uintptr(pbstrOut),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function VarFormatCurrency(
  pvarIn: Pointer;   // VARIANT*
  iNumDig: Integer;   // INT
  iIncLead: Integer;   // INT
  iUseParens: Integer;   // INT
  iGroup: Integer;   // INT
  dwFlags: DWORD;   // DWORD
  pbstrOut: PPWideChar   // LPWSTR* out
): Integer; stdcall;
  external 'OLEAUT32.dll' name 'VarFormatCurrency';

result := DllCall("OLEAUT32\VarFormatCurrency"
    , "Ptr", pvarIn   ; VARIANT*
    , "Int", iNumDig   ; INT
    , "Int", iIncLead   ; INT
    , "Int", iUseParens   ; INT
    , "Int", iGroup   ; INT
    , "UInt", dwFlags   ; DWORD
    , "Ptr", pbstrOut   ; LPWSTR* out
    , "Int")   ; return: HRESULT

●VarFormatCurrency(pvarIn, iNumDig, iIncLead, iUseParens, iGroup, dwFlags, pbstrOut) = DLL("OLEAUT32.dll", "int VarFormatCurrency(void*, int, int, int, int, dword, void*)")
# 呼び出し: VarFormatCurrency(pvarIn, iNumDig, iIncLead, iUseParens, iGroup, dwFlags, pbstrOut)
# pvarIn : VARIANT* -> "void*"
# iNumDig : INT -> "int"
# iIncLead : INT -> "int"
# iUseParens : INT -> "int"
# iGroup : INT -> "int"
# dwFlags : DWORD -> "dword"
# pbstrOut : LPWSTR* 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)。