VariantToUInt64WithDefault

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

ULONGLONG VariantToUInt64WithDefault(
    const VARIANT* varIn,
    ULONGLONG ullDefault
);

<DllImport("PROPSYS.dll", ExactSpelling:=True)>
Public Shared Function VariantToUInt64WithDefault(
    varIn As IntPtr,   ' VARIANT*
    ullDefault As ULong   ' ULONGLONG
) As ULong
End Function

' varIn : VARIANT*
' ullDefault : ULONGLONG
Declare PtrSafe Function VariantToUInt64WithDefault Lib "propsys" ( _
    ByVal varIn As LongPtr, _
    ByVal ullDefault As LongLong) As LongLong
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

VariantToUInt64WithDefault = ctypes.windll.propsys.VariantToUInt64WithDefault
VariantToUInt64WithDefault.restype = ctypes.c_ulonglong
VariantToUInt64WithDefault.argtypes = [
    ctypes.c_void_p,  # varIn : VARIANT*
    ctypes.c_ulonglong,  # ullDefault : ULONGLONG
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('PROPSYS.dll')
VariantToUInt64WithDefault = Fiddle::Function.new(
  lib['VariantToUInt64WithDefault'],
  [
    Fiddle::TYPE_VOIDP,  # varIn : VARIANT*
    -Fiddle::TYPE_LONG_LONG,  # ullDefault : ULONGLONG
  ],
  -Fiddle::TYPE_LONG_LONG)

#[link(name = "propsys")]
extern "system" {
    fn VariantToUInt64WithDefault(
        varIn: *const VARIANT,  // VARIANT*
        ullDefault: u64  // ULONGLONG
    ) -> u64;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("PROPSYS.dll")]
public static extern ulong VariantToUInt64WithDefault(IntPtr varIn, ulong ullDefault);
"@
$api = Add-Type -MemberDefinition $sig -Name 'PROPSYS_VariantToUInt64WithDefault' -Namespace Win32 -PassThru
# $api::VariantToUInt64WithDefault(varIn, ullDefault)

#uselib "PROPSYS.dll"
#func global VariantToUInt64WithDefault "VariantToUInt64WithDefault" sptr, sptr
; VariantToUInt64WithDefault varptr(varIn), ullDefault   ; 戻り値は stat
; varIn : VARIANT* -> "sptr"
; ullDefault : ULONGLONG -> "sptr"
; ※HSP3.7は int64 引数(64bit値渡し)に非対応です。
; ※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 "PROPSYS.dll"
#cfunc global VariantToUInt64WithDefault "VariantToUInt64WithDefault" var, int64
; res = VariantToUInt64WithDefault(varIn, ullDefault)
; varIn : VARIANT* -> "var"
; ullDefault : ULONGLONG -> "int64"
; ※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。
; ※int64 引数の DLL 値渡しは x64 ランタイム(hsp3_64)のみ対応(x86 は未対応)。

; ULONGLONG VariantToUInt64WithDefault(VARIANT* varIn, ULONGLONG ullDefault)
#uselib "PROPSYS.dll"
#cfunc global VariantToUInt64WithDefault "VariantToUInt64WithDefault" var, int64
; res = VariantToUInt64WithDefault(varIn, ullDefault)
; varIn : VARIANT* -> "var"
; ullDefault : ULONGLONG -> "int64"
; ※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 (
	propsys = windows.NewLazySystemDLL("PROPSYS.dll")
	procVariantToUInt64WithDefault = propsys.NewProc("VariantToUInt64WithDefault")
)

// varIn (VARIANT*), ullDefault (ULONGLONG)
r1, _, err := procVariantToUInt64WithDefault.Call(
	uintptr(varIn),
	uintptr(ullDefault),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // ULONGLONG

function VariantToUInt64WithDefault(
  varIn: Pointer;   // VARIANT*
  ullDefault: UInt64   // ULONGLONG
): UInt64; stdcall;
  external 'PROPSYS.dll' name 'VariantToUInt64WithDefault';

result := DllCall("PROPSYS\VariantToUInt64WithDefault"
    , "Ptr", varIn   ; VARIANT*
    , "Int64", ullDefault   ; ULONGLONG
    , "Int64")   ; return: ULONGLONG

●VariantToUInt64WithDefault(varIn, ullDefault) = DLL("PROPSYS.dll", "qword VariantToUInt64WithDefault(void*, qword)")
# 呼び出し: VariantToUInt64WithDefault(varIn, ullDefault)
# varIn : VARIANT* -> "void*"
# ullDefault : ULONGLONG -> "qword"
# 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)。