SHIsFileAvailableOffline

// SHELL32.dll
#include <windows.h>

HRESULT SHIsFileAvailableOffline(
    LPCWSTR pwszPath,
    DWORD* pdwStatus   // optional
);

<DllImport("SHELL32.dll", ExactSpelling:=True)>
Public Shared Function SHIsFileAvailableOffline(
    <MarshalAs(UnmanagedType.LPWStr)> pwszPath As String,   ' LPCWSTR
    pdwStatus As IntPtr   ' DWORD* optional, out
) As Integer
End Function

' pwszPath : LPCWSTR
' pdwStatus : DWORD* optional, out
Declare PtrSafe Function SHIsFileAvailableOffline Lib "shell32" ( _
    ByVal pwszPath As LongPtr, _
    ByVal pdwStatus 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

SHIsFileAvailableOffline = ctypes.windll.shell32.SHIsFileAvailableOffline
SHIsFileAvailableOffline.restype = ctypes.c_int
SHIsFileAvailableOffline.argtypes = [
    wintypes.LPCWSTR,  # pwszPath : LPCWSTR
    ctypes.POINTER(wintypes.DWORD),  # pdwStatus : DWORD* optional, out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('SHELL32.dll')
SHIsFileAvailableOffline = Fiddle::Function.new(
  lib['SHIsFileAvailableOffline'],
  [
    Fiddle::TYPE_VOIDP,  # pwszPath : LPCWSTR
    Fiddle::TYPE_VOIDP,  # pdwStatus : DWORD* optional, out
  ],
  Fiddle::TYPE_INT)

#[link(name = "shell32")]
extern "system" {
    fn SHIsFileAvailableOffline(
        pwszPath: *const u16,  // LPCWSTR
        pdwStatus: *mut u32  // DWORD* optional, out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("SHELL32.dll")]
public static extern int SHIsFileAvailableOffline([MarshalAs(UnmanagedType.LPWStr)] string pwszPath, IntPtr pdwStatus);
"@
$api = Add-Type -MemberDefinition $sig -Name 'SHELL32_SHIsFileAvailableOffline' -Namespace Win32 -PassThru
# $api::SHIsFileAvailableOffline(pwszPath, pdwStatus)

#uselib "SHELL32.dll"
#func global SHIsFileAvailableOffline "SHIsFileAvailableOffline" sptr, sptr
; SHIsFileAvailableOffline pwszPath, varptr(pdwStatus)   ; 戻り値は stat
; pwszPath : LPCWSTR -> "sptr"
; pdwStatus : DWORD* optional, 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 "SHELL32.dll"
#cfunc global SHIsFileAvailableOffline "SHIsFileAvailableOffline" wstr, var
; res = SHIsFileAvailableOffline(pwszPath, pdwStatus)
; pwszPath : LPCWSTR -> "wstr"
; pdwStatus : DWORD* optional, 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 SHIsFileAvailableOffline(LPCWSTR pwszPath, DWORD* pdwStatus)
#uselib "SHELL32.dll"
#cfunc global SHIsFileAvailableOffline "SHIsFileAvailableOffline" wstr, var
; res = SHIsFileAvailableOffline(pwszPath, pdwStatus)
; pwszPath : LPCWSTR -> "wstr"
; pdwStatus : DWORD* optional, 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 (
	shell32 = windows.NewLazySystemDLL("SHELL32.dll")
	procSHIsFileAvailableOffline = shell32.NewProc("SHIsFileAvailableOffline")
)

// pwszPath (LPCWSTR), pdwStatus (DWORD* optional, out)
r1, _, err := procSHIsFileAvailableOffline.Call(
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(pwszPath))),
	uintptr(pdwStatus),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function SHIsFileAvailableOffline(
  pwszPath: PWideChar;   // LPCWSTR
  pdwStatus: Pointer   // DWORD* optional, out
): Integer; stdcall;
  external 'SHELL32.dll' name 'SHIsFileAvailableOffline';

result := DllCall("SHELL32\SHIsFileAvailableOffline"
    , "WStr", pwszPath   ; LPCWSTR
    , "Ptr", pdwStatus   ; DWORD* optional, out
    , "Int")   ; return: HRESULT

●SHIsFileAvailableOffline(pwszPath, pdwStatus) = DLL("SHELL32.dll", "int SHIsFileAvailableOffline(char*, void*)")
# 呼び出し: SHIsFileAvailableOffline(pwszPath, pdwStatus)
# pwszPath : LPCWSTR -> "char*"
# pdwStatus : DWORD* optional, 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)。