ILFindChild

関数

親PIDL配下の子PIDLの位置を検索する。

DLLSHELL32.dll呼出規約winapi対応OSWindows XP 以降

シグネチャ

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

ITEMIDLIST* ILFindChild(
    ITEMIDLIST* pidlParent,
    ITEMIDLIST* pidlChild
);

パラメーター

名前	型	方向
pidlParent	ITEMIDLIST*	in
pidlChild	ITEMIDLIST*	in

戻り値の型: ITEMIDLIST*

各言語での呼び出し定義

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

ITEMIDLIST* ILFindChild(
    ITEMIDLIST* pidlParent,
    ITEMIDLIST* pidlChild
);

[DllImport("SHELL32.dll", ExactSpelling = true)]
static extern IntPtr ILFindChild(
    IntPtr pidlParent,   // ITEMIDLIST*
    IntPtr pidlChild   // ITEMIDLIST*
);

<DllImport("SHELL32.dll", ExactSpelling:=True)>
Public Shared Function ILFindChild(
    pidlParent As IntPtr,   ' ITEMIDLIST*
    pidlChild As IntPtr   ' ITEMIDLIST*
) As IntPtr
End Function

' pidlParent : ITEMIDLIST*
' pidlChild : ITEMIDLIST*
Declare PtrSafe Function ILFindChild Lib "shell32" ( _
    ByVal pidlParent As LongPtr, _
    ByVal pidlChild As LongPtr) As LongPtr
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

ILFindChild = ctypes.windll.shell32.ILFindChild
ILFindChild.restype = ctypes.c_void_p
ILFindChild.argtypes = [
    ctypes.c_void_p,  # pidlParent : ITEMIDLIST*
    ctypes.c_void_p,  # pidlChild : ITEMIDLIST*
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('SHELL32.dll')
ILFindChild = Fiddle::Function.new(
  lib['ILFindChild'],
  [
    Fiddle::TYPE_VOIDP,  # pidlParent : ITEMIDLIST*
    Fiddle::TYPE_VOIDP,  # pidlChild : ITEMIDLIST*
  ],
  Fiddle::TYPE_VOIDP)

#[link(name = "shell32")]
extern "system" {
    fn ILFindChild(
        pidlParent: *mut ITEMIDLIST,  // ITEMIDLIST*
        pidlChild: *mut ITEMIDLIST  // ITEMIDLIST*
    ) -> *mut ITEMIDLIST;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("SHELL32.dll")]
public static extern IntPtr ILFindChild(IntPtr pidlParent, IntPtr pidlChild);
"@
$api = Add-Type -MemberDefinition $sig -Name 'SHELL32_ILFindChild' -Namespace Win32 -PassThru
# $api::ILFindChild(pidlParent, pidlChild)

#uselib "SHELL32.dll"
#func global ILFindChild "ILFindChild" sptr, sptr
; ILFindChild varptr(pidlParent), varptr(pidlChild)   ; 戻り値は stat
; pidlParent : ITEMIDLIST* -> "sptr"
; pidlChild : ITEMIDLIST* -> "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。

出力引数:

#uselib "SHELL32.dll"
#cfunc global ILFindChild "ILFindChild" var, var
; res = ILFindChild(pidlParent, pidlChild)
; pidlParent : ITEMIDLIST* -> "var"
; pidlChild : ITEMIDLIST* -> "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。#uselib "SHELL32.dll"
#cfunc global ILFindChild "ILFindChild" sptr, sptr
; res = ILFindChild(varptr(pidlParent), varptr(pidlChild))
; pidlParent : ITEMIDLIST* -> "sptr"
; pidlChild : ITEMIDLIST* -> "sptr"
; ※出力/バッファ引数はポインタ方式(token=sptr / 呼び出しは varptr(変数))。

出力引数:

; ITEMIDLIST* ILFindChild(ITEMIDLIST* pidlParent, ITEMIDLIST* pidlChild)
#uselib "SHELL32.dll"
#cfunc global ILFindChild "ILFindChild" var, var
; res = ILFindChild(pidlParent, pidlChild)
; pidlParent : ITEMIDLIST* -> "var"
; pidlChild : ITEMIDLIST* -> "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。; ITEMIDLIST* ILFindChild(ITEMIDLIST* pidlParent, ITEMIDLIST* pidlChild)
#uselib "SHELL32.dll"
#cfunc global ILFindChild "ILFindChild" intptr, intptr
; res = ILFindChild(varptr(pidlParent), varptr(pidlChild))
; pidlParent : ITEMIDLIST* -> "intptr"
; pidlChild : ITEMIDLIST* -> "intptr"
; ※出力/バッファ引数はポインタ方式(token=intptr / 呼び出しは varptr(変数))。

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

var (
	shell32 = windows.NewLazySystemDLL("SHELL32.dll")
	procILFindChild = shell32.NewProc("ILFindChild")
)

// pidlParent (ITEMIDLIST*), pidlChild (ITEMIDLIST*)
r1, _, err := procILFindChild.Call(
	uintptr(pidlParent),
	uintptr(pidlChild),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // ITEMIDLIST*

function ILFindChild(
  pidlParent: Pointer;   // ITEMIDLIST*
  pidlChild: Pointer   // ITEMIDLIST*
): Pointer; stdcall;
  external 'SHELL32.dll' name 'ILFindChild';

result := DllCall("SHELL32\ILFindChild"
    , "Ptr", pidlParent   ; ITEMIDLIST*
    , "Ptr", pidlChild   ; ITEMIDLIST*
    , "Ptr")   ; return: ITEMIDLIST*

●ILFindChild(pidlParent, pidlChild) = DLL("SHELL32.dll", "void* ILFindChild(void*, void*)")
# 呼び出し: ILFindChild(pidlParent, pidlChild)
# pidlParent : ITEMIDLIST* -> "void*"
# pidlChild : ITEMIDLIST* -> "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)。