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CoIsHandlerConnected

関数

オブジェクトハンドラがリモートサーバーに接続中か判定する。

DLLOLE32.dll呼出規約winapi対応OSWindows 2000 以降

シグネチャ

// OLE32.dll
#include <windows.h>

BOOL CoIsHandlerConnected(
    IUnknown* pUnk
);

パラメーター

名前	型	方向
pUnk	IUnknown*	in

戻り値の型: BOOL

各言語での呼び出し定義

// OLE32.dll
#include <windows.h>

BOOL CoIsHandlerConnected(
    IUnknown* pUnk
);

[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("OLE32.dll", ExactSpelling = true)]
static extern bool CoIsHandlerConnected(
    IntPtr pUnk   // IUnknown*
);

<DllImport("OLE32.dll", ExactSpelling:=True)>
Public Shared Function CoIsHandlerConnected(
    pUnk As IntPtr   ' IUnknown*
) As Boolean
End Function

' pUnk : IUnknown*
Declare PtrSafe Function CoIsHandlerConnected Lib "ole32" ( _
    ByVal pUnk 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

CoIsHandlerConnected = ctypes.windll.ole32.CoIsHandlerConnected
CoIsHandlerConnected.restype = wintypes.BOOL
CoIsHandlerConnected.argtypes = [
    ctypes.c_void_p,  # pUnk : IUnknown*
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('OLE32.dll')
CoIsHandlerConnected = Fiddle::Function.new(
  lib['CoIsHandlerConnected'],
  [
    Fiddle::TYPE_VOIDP,  # pUnk : IUnknown*
  ],
  Fiddle::TYPE_INT)

#[link(name = "ole32")]
extern "system" {
    fn CoIsHandlerConnected(
        pUnk: *mut core::ffi::c_void  // IUnknown*
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("OLE32.dll")]
public static extern bool CoIsHandlerConnected(IntPtr pUnk);
"@
$api = Add-Type -MemberDefinition $sig -Name 'OLE32_CoIsHandlerConnected' -Namespace Win32 -PassThru
# $api::CoIsHandlerConnected(pUnk)

#uselib "OLE32.dll"
#func global CoIsHandlerConnected "CoIsHandlerConnected" sptr
; CoIsHandlerConnected pUnk   ; 戻り値は stat
; pUnk : IUnknown* -> "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 "OLE32.dll"
#cfunc global CoIsHandlerConnected "CoIsHandlerConnected" sptr
; res = CoIsHandlerConnected(pUnk)
; pUnk : IUnknown* -> "sptr"

; BOOL CoIsHandlerConnected(IUnknown* pUnk)
#uselib "OLE32.dll"
#cfunc global CoIsHandlerConnected "CoIsHandlerConnected" intptr
; res = CoIsHandlerConnected(pUnk)
; pUnk : IUnknown* -> "intptr"

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

var (
	ole32 = windows.NewLazySystemDLL("OLE32.dll")
	procCoIsHandlerConnected = ole32.NewProc("CoIsHandlerConnected")
)

// pUnk (IUnknown*)
r1, _, err := procCoIsHandlerConnected.Call(
	uintptr(pUnk),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function CoIsHandlerConnected(
  pUnk: Pointer   // IUnknown*
): BOOL; stdcall;
  external 'OLE32.dll' name 'CoIsHandlerConnected';

result := DllCall("OLE32\CoIsHandlerConnected"
    , "Ptr", pUnk   ; IUnknown*
    , "Int")   ; return: BOOL

●CoIsHandlerConnected(pUnk) = DLL("OLE32.dll", "bool CoIsHandlerConnected(void*)")
# 呼び出し: CoIsHandlerConnected(pUnk)
# pUnk : IUnknown* -> "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)。