SHGetItemFromDataObject

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

HRESULT SHGetItemFromDataObject(
    IDataObject* pdtobj,
    DATAOBJ_GET_ITEM_FLAGS dwFlags,
    const GUID* riid,
    void** ppv
);

<DllImport("SHELL32.dll", ExactSpelling:=True)>
Public Shared Function SHGetItemFromDataObject(
    pdtobj As IntPtr,   ' IDataObject*
    dwFlags As Integer,   ' DATAOBJ_GET_ITEM_FLAGS
    ByRef riid As Guid,   ' GUID*
    ppv As IntPtr   ' void** out
) As Integer
End Function

' pdtobj : IDataObject*
' dwFlags : DATAOBJ_GET_ITEM_FLAGS
' riid : GUID*
' ppv : void** out
Declare PtrSafe Function SHGetItemFromDataObject Lib "shell32" ( _
    ByVal pdtobj As LongPtr, _
    ByVal dwFlags As Long, _
    ByVal riid As LongPtr, _
    ByVal ppv 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

SHGetItemFromDataObject = ctypes.windll.shell32.SHGetItemFromDataObject
SHGetItemFromDataObject.restype = ctypes.c_int
SHGetItemFromDataObject.argtypes = [
    ctypes.c_void_p,  # pdtobj : IDataObject*
    ctypes.c_int,  # dwFlags : DATAOBJ_GET_ITEM_FLAGS
    ctypes.c_void_p,  # riid : GUID*
    ctypes.c_void_p,  # ppv : void** out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('SHELL32.dll')
SHGetItemFromDataObject = Fiddle::Function.new(
  lib['SHGetItemFromDataObject'],
  [
    Fiddle::TYPE_VOIDP,  # pdtobj : IDataObject*
    Fiddle::TYPE_INT,  # dwFlags : DATAOBJ_GET_ITEM_FLAGS
    Fiddle::TYPE_VOIDP,  # riid : GUID*
    Fiddle::TYPE_VOIDP,  # ppv : void** out
  ],
  Fiddle::TYPE_INT)

#[link(name = "shell32")]
extern "system" {
    fn SHGetItemFromDataObject(
        pdtobj: *mut core::ffi::c_void,  // IDataObject*
        dwFlags: i32,  // DATAOBJ_GET_ITEM_FLAGS
        riid: *const GUID,  // GUID*
        ppv: *mut *mut ()  // void** out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("SHELL32.dll")]
public static extern int SHGetItemFromDataObject(IntPtr pdtobj, int dwFlags, ref Guid riid, IntPtr ppv);
"@
$api = Add-Type -MemberDefinition $sig -Name 'SHELL32_SHGetItemFromDataObject' -Namespace Win32 -PassThru
# $api::SHGetItemFromDataObject(pdtobj, dwFlags, riid, ppv)

#uselib "SHELL32.dll"
#func global SHGetItemFromDataObject "SHGetItemFromDataObject" sptr, sptr, sptr, sptr
; SHGetItemFromDataObject pdtobj, dwFlags, varptr(riid), ppv   ; 戻り値は stat
; pdtobj : IDataObject* -> "sptr"
; dwFlags : DATAOBJ_GET_ITEM_FLAGS -> "sptr"
; riid : GUID* -> "sptr"
; ppv : void** 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。

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

var (
	shell32 = windows.NewLazySystemDLL("SHELL32.dll")
	procSHGetItemFromDataObject = shell32.NewProc("SHGetItemFromDataObject")
)

// pdtobj (IDataObject*), dwFlags (DATAOBJ_GET_ITEM_FLAGS), riid (GUID*), ppv (void** out)
r1, _, err := procSHGetItemFromDataObject.Call(
	uintptr(pdtobj),
	uintptr(dwFlags),
	uintptr(riid),
	uintptr(ppv),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function SHGetItemFromDataObject(
  pdtobj: Pointer;   // IDataObject*
  dwFlags: Integer;   // DATAOBJ_GET_ITEM_FLAGS
  riid: PGUID;   // GUID*
  ppv: Pointer   // void** out
): Integer; stdcall;
  external 'SHELL32.dll' name 'SHGetItemFromDataObject';

result := DllCall("SHELL32\SHGetItemFromDataObject"
    , "Ptr", pdtobj   ; IDataObject*
    , "Int", dwFlags   ; DATAOBJ_GET_ITEM_FLAGS
    , "Ptr", riid   ; GUID*
    , "Ptr", ppv   ; void** out
    , "Int")   ; return: HRESULT

●SHGetItemFromDataObject(pdtobj, dwFlags, riid, ppv) = DLL("SHELL32.dll", "int SHGetItemFromDataObject(void*, int, void*, void*)")
# 呼び出し: SHGetItemFromDataObject(pdtobj, dwFlags, riid, ppv)
# pdtobj : IDataObject* -> "void*"
# dwFlags : DATAOBJ_GET_ITEM_FLAGS -> "int"
# riid : GUID* -> "void*"
# ppv : void** 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)。

const std = @import("std");

extern "shell32" fn SHGetItemFromDataObject(
    pdtobj: ?*anyopaque, // IDataObject*
    dwFlags: i32, // DATAOBJ_GET_ITEM_FLAGS
    riid: [*c]GUID, // GUID*
    ppv: ?*anyopaque // void** out
) callconv(std.os.windows.WINAPI) i32;

proc SHGetItemFromDataObject(
    pdtobj: pointer,  # IDataObject*
    dwFlags: int32,  # DATAOBJ_GET_ITEM_FLAGS
    riid: ptr GUID,  # GUID*
    ppv: pointer  # void** out
): int32 {.importc: "SHGetItemFromDataObject", stdcall, dynlib: "SHELL32.dll".}

pragma(lib, "shell32");
extern(Windows)
int SHGetItemFromDataObject(
    void* pdtobj,   // IDataObject*
    int dwFlags,   // DATAOBJ_GET_ITEM_FLAGS
    GUID* riid,   // GUID*
    void** ppv   // void** out
);

ccall((:SHGetItemFromDataObject, "SHELL32.dll"), stdcall, Int32,
      (Ptr{Cvoid}, Int32, Ptr{GUID}, Ptr{Cvoid}),
      pdtobj, dwFlags, riid, ppv)
# pdtobj : IDataObject* -> Ptr{Cvoid}
# dwFlags : DATAOBJ_GET_ITEM_FLAGS -> Int32
# riid : GUID* -> Ptr{GUID}
# ppv : void** out -> Ptr{Cvoid}
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
int32_t SHGetItemFromDataObject(
    void* pdtobj,
    int32_t dwFlags,
    void* riid,
    void** ppv);
]]
local shell32 = ffi.load("shell32")
-- shell32.SHGetItemFromDataObject(pdtobj, dwFlags, riid, ppv)
-- pdtobj : IDataObject*
-- dwFlags : DATAOBJ_GET_ITEM_FLAGS
-- riid : GUID*
-- ppv : void** out
-- 構造体/GUIDへのポインタは cdef が通るよう void* で表記(実型は各引数コメント参照)。値渡し構造体・enum は対応する typedef を cdef に追加すること。

const koffi = require('koffi');
const lib = koffi.load('SHELL32.dll');
const SHGetItemFromDataObject = lib.func('__stdcall', 'SHGetItemFromDataObject', 'int32_t', ['void *', 'int32_t', 'void *', 'void *']);
// SHGetItemFromDataObject(pdtobj, dwFlags, riid, ppv)
// pdtobj : IDataObject* -> 'void *'
// dwFlags : DATAOBJ_GET_ITEM_FLAGS -> 'int32_t'
// riid : GUID* -> 'void *'
// ppv : void** out -> 'void *'
// 出力ポインタは koffi.out(...) で包む。構造体は koffi.struct で定義。

const lib = Deno.dlopen("SHELL32.dll", {
  SHGetItemFromDataObject: { parameters: ["pointer", "i32", "pointer", "pointer"], result: "i32" },
});
// lib.symbols.SHGetItemFromDataObject(pdtobj, dwFlags, riid, ppv)
// pdtobj : IDataObject* -> "pointer"
// dwFlags : DATAOBJ_GET_ITEM_FLAGS -> "i32"
// riid : GUID* -> "pointer"
// ppv : void** out -> "pointer"
// 文字列引数は "buffer"(NUL 終端のバイト列を Uint8Array で渡す)。
// 値渡し構造体は { struct: [ ...field types... ] } を使用。

<?php
$ffi = FFI::cdef(<<<C
int32_t SHGetItemFromDataObject(
    void* pdtobj,
    int32_t dwFlags,
    void* riid,
    void** ppv);
C, "SHELL32.dll");
// $ffi->SHGetItemFromDataObject(pdtobj, dwFlags, riid, ppv);
// pdtobj : IDataObject*
// dwFlags : DATAOBJ_GET_ITEM_FLAGS
// riid : GUID*
// ppv : void** out
// 構造体/GUIDへのポインタは cdef が通るよう void* で表記(実型は各引数コメント参照)。値渡し構造体・enum は対応する typedef を cdef に追加すること。
// WINAPI(stdcall): x64 では呼出規約が統一されるため問題なし。x86 では __stdcall 対応のラッパが必要な場合あり。

import com.sun.jna.*;
import com.sun.jna.ptr.*;
import com.sun.jna.win32.StdCallLibrary;
import com.sun.jna.win32.W32APIOptions;

public interface Shell32 extends StdCallLibrary {
    Shell32 INSTANCE = Native.load("shell32", Shell32.class);
    int SHGetItemFromDataObject(
        Pointer pdtobj,   // IDataObject*
        int dwFlags,   // DATAOBJ_GET_ITEM_FLAGS
        Pointer riid,   // GUID*
        Pointer ppv   // void** out
    );
}

@[Link("shell32")]
lib LibSHELL32
  fun SHGetItemFromDataObject = SHGetItemFromDataObject(
    pdtobj : Void*,   # IDataObject*
    dwFlags : Int32,   # DATAOBJ_GET_ITEM_FLAGS
    riid : GUID*,   # GUID*
    ppv : Void**   # void** out
  ) : Int32
end
# 構造体/GUID/enum は lib 内に対応する型定義が必要。
# 呼出規約: x64 は規約統一のため OK。x86(32bit)は WINAPI=stdcall だが Crystal の fun に stdcall 付与構文がなく非対応。

import 'dart:ffi';
import 'package:ffi/ffi.dart';

typedef SHGetItemFromDataObjectNative = Int32 Function(Pointer<Void>, Int32, Pointer<Void>, Pointer<Void>);
typedef SHGetItemFromDataObjectDart = int Function(Pointer<Void>, int, Pointer<Void>, Pointer<Void>);
final SHGetItemFromDataObject = DynamicLibrary.open('SHELL32.dll')
    .lookupFunction<SHGetItemFromDataObjectNative, SHGetItemFromDataObjectDart>('SHGetItemFromDataObject');
// pdtobj : IDataObject* -> Pointer<Void>
// dwFlags : DATAOBJ_GET_ITEM_FLAGS -> Int32
// riid : GUID* -> Pointer<Void>
// ppv : void** out -> Pointer<Void>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function SHGetItemFromDataObject(
  pdtobj: Pointer;   // IDataObject*
  dwFlags: Integer;   // DATAOBJ_GET_ITEM_FLAGS
  riid: PGUID;   // GUID*
  ppv: Pointer   // void** out
): Integer; stdcall;
  external 'SHELL32.dll' name 'SHGetItemFromDataObject';

import Foreign
import Foreign.C.Types
import Foreign.C.String

foreign import stdcall safe "SHGetItemFromDataObject"
  c_SHGetItemFromDataObject :: Ptr () -> Int32 -> Ptr () -> Ptr () -> IO Int32
-- pdtobj : IDataObject* -> Ptr ()
-- dwFlags : DATAOBJ_GET_ITEM_FLAGS -> Int32
-- riid : GUID* -> Ptr ()
-- ppv : void** out -> Ptr ()
-- 要 GHC(Windows)。stdcall は x64 では ccall として扱われる。ブロックする API は safe 呼び出し推奨。

open Ctypes
open Foreign

let shgetitemfromdataobject =
  foreign "SHGetItemFromDataObject"
    ((ptr void) @-> int32_t @-> (ptr void) @-> (ptr void) @-> returning int32_t)
(* pdtobj : IDataObject* -> (ptr void) *)
(* dwFlags : DATAOBJ_GET_ITEM_FLAGS -> int32_t *)
(* riid : GUID* -> (ptr void) *)
(* ppv : void** out -> (ptr void) *)
(* foreign は cdecl 前提。x64 Windows では WINAPI と一致。構造体は ctypes structure を定義のこと。 *)

(cffi:define-foreign-library shell32 (t "SHELL32.dll"))
(cffi:use-foreign-library shell32)

(cffi:defcfun ("SHGetItemFromDataObject" shget-item-from-data-object :convention :stdcall) :int32
  (pdtobj :pointer)   ; IDataObject*
  (dw-flags :int32)   ; DATAOBJ_GET_ITEM_FLAGS
  (riid :pointer)   ; GUID*
  (ppv :pointer))   ; void** out
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $SHGetItemFromDataObject = Win32::API::More->new('SHELL32',
    'int SHGetItemFromDataObject(LPVOID pdtobj, int dwFlags, LPVOID riid, LPVOID ppv)');
# my $ret = $SHGetItemFromDataObject->Call($pdtobj, $dwFlags, $riid, $ppv);
# pdtobj : IDataObject* -> LPVOID
# dwFlags : DATAOBJ_GET_ITEM_FLAGS -> int
# riid : GUID* -> LPVOID
# ppv : void** out -> LPVOID
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。