SHChangeNotify

関数

シェルにファイルやフォルダーの変更イベントを通知する。

DLLSHELL32.dll呼出規約winapi対応OSWindows XP 以降

シグネチャ

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

void SHChangeNotify(
    INT wEventId,
    SHCNF_FLAGS uFlags,
    const void* dwItem1,   // optional
    const void* dwItem2   // optional
);

パラメーター

名前	型	方向
wEventId	INT	in
uFlags	SHCNF_FLAGS	in
dwItem1	void*	inoptional
dwItem2	void*	inoptional

戻り値の型: void

各言語での呼び出し定義

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

void SHChangeNotify(
    INT wEventId,
    SHCNF_FLAGS uFlags,
    const void* dwItem1,   // optional
    const void* dwItem2   // optional
);

[DllImport("SHELL32.dll", ExactSpelling = true)]
static extern void SHChangeNotify(
    int wEventId,   // INT
    uint uFlags,   // SHCNF_FLAGS
    IntPtr dwItem1,   // void* optional
    IntPtr dwItem2   // void* optional
);

<DllImport("SHELL32.dll", ExactSpelling:=True)>
Public Shared Sub SHChangeNotify(
    wEventId As Integer,   ' INT
    uFlags As UInteger,   ' SHCNF_FLAGS
    dwItem1 As IntPtr,   ' void* optional
    dwItem2 As IntPtr   ' void* optional
)
End Sub

' wEventId : INT
' uFlags : SHCNF_FLAGS
' dwItem1 : void* optional
' dwItem2 : void* optional
Declare PtrSafe Sub SHChangeNotify Lib "shell32" ( _
    ByVal wEventId As Long, _
    ByVal uFlags As Long, _
    ByVal dwItem1 As LongPtr, _
    ByVal dwItem2 As LongPtr)
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

SHChangeNotify = ctypes.windll.shell32.SHChangeNotify
SHChangeNotify.restype = None
SHChangeNotify.argtypes = [
    ctypes.c_int,  # wEventId : INT
    wintypes.DWORD,  # uFlags : SHCNF_FLAGS
    ctypes.POINTER(None),  # dwItem1 : void* optional
    ctypes.POINTER(None),  # dwItem2 : void* optional
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('SHELL32.dll')
SHChangeNotify = Fiddle::Function.new(
  lib['SHChangeNotify'],
  [
    Fiddle::TYPE_INT,  # wEventId : INT
    -Fiddle::TYPE_INT,  # uFlags : SHCNF_FLAGS
    Fiddle::TYPE_VOIDP,  # dwItem1 : void* optional
    Fiddle::TYPE_VOIDP,  # dwItem2 : void* optional
  ],
  Fiddle::TYPE_VOID)

#[link(name = "shell32")]
extern "system" {
    fn SHChangeNotify(
        wEventId: i32,  // INT
        uFlags: u32,  // SHCNF_FLAGS
        dwItem1: *const (),  // void* optional
        dwItem2: *const ()  // void* optional
    );
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("SHELL32.dll")]
public static extern void SHChangeNotify(int wEventId, uint uFlags, IntPtr dwItem1, IntPtr dwItem2);
"@
$api = Add-Type -MemberDefinition $sig -Name 'SHELL32_SHChangeNotify' -Namespace Win32 -PassThru
# $api::SHChangeNotify(wEventId, uFlags, dwItem1, dwItem2)

#uselib "SHELL32.dll"
#func global SHChangeNotify "SHChangeNotify" sptr, sptr, sptr, sptr
; SHChangeNotify wEventId, uFlags, dwItem1, dwItem2
; wEventId : INT -> "sptr"
; uFlags : SHCNF_FLAGS -> "sptr"
; dwItem1 : void* optional -> "sptr"
; dwItem2 : void* optional -> "sptr"

#uselib "SHELL32.dll"
#func global SHChangeNotify "SHChangeNotify" int, int, sptr, sptr
; SHChangeNotify wEventId, uFlags, dwItem1, dwItem2
; wEventId : INT -> "int"
; uFlags : SHCNF_FLAGS -> "int"
; dwItem1 : void* optional -> "sptr"
; dwItem2 : void* optional -> "sptr"

; void SHChangeNotify(INT wEventId, SHCNF_FLAGS uFlags, void* dwItem1, void* dwItem2)
#uselib "SHELL32.dll"
#func global SHChangeNotify "SHChangeNotify" int, int, intptr, intptr
; SHChangeNotify wEventId, uFlags, dwItem1, dwItem2
; wEventId : INT -> "int"
; uFlags : SHCNF_FLAGS -> "int"
; dwItem1 : void* optional -> "intptr"
; dwItem2 : void* optional -> "intptr"

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

var (
	shell32 = windows.NewLazySystemDLL("SHELL32.dll")
	procSHChangeNotify = shell32.NewProc("SHChangeNotify")
)

// wEventId (INT), uFlags (SHCNF_FLAGS), dwItem1 (void* optional), dwItem2 (void* optional)
r1, _, err := procSHChangeNotify.Call(
	uintptr(wEventId),
	uintptr(uFlags),
	uintptr(dwItem1),
	uintptr(dwItem2),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // void

procedure SHChangeNotify(
  wEventId: Integer;   // INT
  uFlags: DWORD;   // SHCNF_FLAGS
  dwItem1: Pointer;   // void* optional
  dwItem2: Pointer   // void* optional
); stdcall;
  external 'SHELL32.dll' name 'SHChangeNotify';

result := DllCall("SHELL32\SHChangeNotify"
    , "Int", wEventId   ; INT
    , "UInt", uFlags   ; SHCNF_FLAGS
    , "Ptr", dwItem1   ; void* optional
    , "Ptr", dwItem2   ; void* optional
    , "Int")   ; return: void

●SHChangeNotify(wEventId, uFlags, dwItem1, dwItem2) = DLL("SHELL32.dll", "int SHChangeNotify(int, dword, void*, void*)")
# 呼び出し: SHChangeNotify(wEventId, uFlags, dwItem1, dwItem2)
# wEventId : INT -> "int"
# uFlags : SHCNF_FLAGS -> "dword"
# dwItem1 : void* optional -> "void*"
# dwItem2 : void* optional -> "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)。