OleMetafilePictFromIconAndLabel

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

HGLOBAL OleMetafilePictFromIconAndLabel(
    HICON hIcon,
    LPWSTR lpszLabel,
    LPWSTR lpszSourceFile,
    DWORD iIconIndex
);

<DllImport("OLE32.dll", SetLastError:=True, ExactSpelling:=True)>
Public Shared Function OleMetafilePictFromIconAndLabel(
    hIcon As IntPtr,   ' HICON
    <MarshalAs(UnmanagedType.LPWStr)> lpszLabel As String,   ' LPWSTR
    <MarshalAs(UnmanagedType.LPWStr)> lpszSourceFile As String,   ' LPWSTR
    iIconIndex As UInteger   ' DWORD
) As IntPtr
End Function

' hIcon : HICON
' lpszLabel : LPWSTR
' lpszSourceFile : LPWSTR
' iIconIndex : DWORD
Declare PtrSafe Function OleMetafilePictFromIconAndLabel Lib "ole32" ( _
    ByVal hIcon As LongPtr, _
    ByVal lpszLabel As LongPtr, _
    ByVal lpszSourceFile As LongPtr, _
    ByVal iIconIndex As Long) As LongPtr
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

OleMetafilePictFromIconAndLabel = ctypes.windll.ole32.OleMetafilePictFromIconAndLabel
OleMetafilePictFromIconAndLabel.restype = ctypes.c_void_p
OleMetafilePictFromIconAndLabel.argtypes = [
    wintypes.HANDLE,  # hIcon : HICON
    wintypes.LPCWSTR,  # lpszLabel : LPWSTR
    wintypes.LPCWSTR,  # lpszSourceFile : LPWSTR
    wintypes.DWORD,  # iIconIndex : DWORD
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('OLE32.dll')
OleMetafilePictFromIconAndLabel = Fiddle::Function.new(
  lib['OleMetafilePictFromIconAndLabel'],
  [
    Fiddle::TYPE_VOIDP,  # hIcon : HICON
    Fiddle::TYPE_VOIDP,  # lpszLabel : LPWSTR
    Fiddle::TYPE_VOIDP,  # lpszSourceFile : LPWSTR
    -Fiddle::TYPE_INT,  # iIconIndex : DWORD
  ],
  Fiddle::TYPE_VOIDP)

#[link(name = "ole32")]
extern "system" {
    fn OleMetafilePictFromIconAndLabel(
        hIcon: *mut core::ffi::c_void,  // HICON
        lpszLabel: *mut u16,  // LPWSTR
        lpszSourceFile: *mut u16,  // LPWSTR
        iIconIndex: u32  // DWORD
    ) -> *mut core::ffi::c_void;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("OLE32.dll", SetLastError = true)]
public static extern IntPtr OleMetafilePictFromIconAndLabel(IntPtr hIcon, [MarshalAs(UnmanagedType.LPWStr)] string lpszLabel, [MarshalAs(UnmanagedType.LPWStr)] string lpszSourceFile, uint iIconIndex);
"@
$api = Add-Type -MemberDefinition $sig -Name 'OLE32_OleMetafilePictFromIconAndLabel' -Namespace Win32 -PassThru
# $api::OleMetafilePictFromIconAndLabel(hIcon, lpszLabel, lpszSourceFile, iIconIndex)

#uselib "OLE32.dll"
#func global OleMetafilePictFromIconAndLabel "OleMetafilePictFromIconAndLabel" sptr, sptr, sptr, sptr
; OleMetafilePictFromIconAndLabel hIcon, lpszLabel, lpszSourceFile, iIconIndex   ; 戻り値は stat
; hIcon : HICON -> "sptr"
; lpszLabel : LPWSTR -> "sptr"
; lpszSourceFile : LPWSTR -> "sptr"
; iIconIndex : DWORD -> "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 OleMetafilePictFromIconAndLabel "OleMetafilePictFromIconAndLabel" sptr, wstr, wstr, int
; res = OleMetafilePictFromIconAndLabel(hIcon, lpszLabel, lpszSourceFile, iIconIndex)
; hIcon : HICON -> "sptr"
; lpszLabel : LPWSTR -> "wstr"
; lpszSourceFile : LPWSTR -> "wstr"
; iIconIndex : DWORD -> "int"

; HGLOBAL OleMetafilePictFromIconAndLabel(HICON hIcon, LPWSTR lpszLabel, LPWSTR lpszSourceFile, DWORD iIconIndex)
#uselib "OLE32.dll"
#cfunc global OleMetafilePictFromIconAndLabel "OleMetafilePictFromIconAndLabel" intptr, wstr, wstr, int
; res = OleMetafilePictFromIconAndLabel(hIcon, lpszLabel, lpszSourceFile, iIconIndex)
; hIcon : HICON -> "intptr"
; lpszLabel : LPWSTR -> "wstr"
; lpszSourceFile : LPWSTR -> "wstr"
; iIconIndex : DWORD -> "int"

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

var (
	ole32 = windows.NewLazySystemDLL("OLE32.dll")
	procOleMetafilePictFromIconAndLabel = ole32.NewProc("OleMetafilePictFromIconAndLabel")
)

// hIcon (HICON), lpszLabel (LPWSTR), lpszSourceFile (LPWSTR), iIconIndex (DWORD)
r1, _, err := procOleMetafilePictFromIconAndLabel.Call(
	uintptr(hIcon),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(lpszLabel))),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(lpszSourceFile))),
	uintptr(iIconIndex),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HGLOBAL

function OleMetafilePictFromIconAndLabel(
  hIcon: THandle;   // HICON
  lpszLabel: PWideChar;   // LPWSTR
  lpszSourceFile: PWideChar;   // LPWSTR
  iIconIndex: DWORD   // DWORD
): THandle; stdcall;
  external 'OLE32.dll' name 'OleMetafilePictFromIconAndLabel';

result := DllCall("OLE32\OleMetafilePictFromIconAndLabel"
    , "Ptr", hIcon   ; HICON
    , "WStr", lpszLabel   ; LPWSTR
    , "WStr", lpszSourceFile   ; LPWSTR
    , "UInt", iIconIndex   ; DWORD
    , "Ptr")   ; return: HGLOBAL

●OleMetafilePictFromIconAndLabel(hIcon, lpszLabel, lpszSourceFile, iIconIndex) = DLL("OLE32.dll", "void* OleMetafilePictFromIconAndLabel(void*, char*, char*, dword)")
# 呼び出し: OleMetafilePictFromIconAndLabel(hIcon, lpszLabel, lpszSourceFile, iIconIndex)
# hIcon : HICON -> "void*"
# lpszLabel : LPWSTR -> "char*"
# lpszSourceFile : LPWSTR -> "char*"
# iIconIndex : DWORD -> "dword"
# 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 "ole32" fn OleMetafilePictFromIconAndLabel(
    hIcon: ?*anyopaque, // HICON
    lpszLabel: [*c]const u16, // LPWSTR
    lpszSourceFile: [*c]const u16, // LPWSTR
    iIconIndex: u32 // DWORD
) callconv(std.os.windows.WINAPI) ?*anyopaque;

proc OleMetafilePictFromIconAndLabel(
    hIcon: pointer,  # HICON
    lpszLabel: WideCString,  # LPWSTR
    lpszSourceFile: WideCString,  # LPWSTR
    iIconIndex: uint32  # DWORD
): pointer {.importc: "OleMetafilePictFromIconAndLabel", stdcall, dynlib: "OLE32.dll".}

pragma(lib, "ole32");
extern(Windows)
void* OleMetafilePictFromIconAndLabel(
    void* hIcon,   // HICON
    const(wchar)* lpszLabel,   // LPWSTR
    const(wchar)* lpszSourceFile,   // LPWSTR
    uint iIconIndex   // DWORD
);

ccall((:OleMetafilePictFromIconAndLabel, "OLE32.dll"), stdcall, Ptr{Cvoid},
      (Ptr{Cvoid}, Cwstring, Cwstring, UInt32),
      hIcon, lpszLabel, lpszSourceFile, iIconIndex)
# hIcon : HICON -> Ptr{Cvoid}
# lpszLabel : LPWSTR -> Cwstring
# lpszSourceFile : LPWSTR -> Cwstring
# iIconIndex : DWORD -> UInt32
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
void* OleMetafilePictFromIconAndLabel(
    void* hIcon,
    const uint16_t* lpszLabel,
    const uint16_t* lpszSourceFile,
    uint32_t iIconIndex);
]]
local ole32 = ffi.load("ole32")
-- ole32.OleMetafilePictFromIconAndLabel(hIcon, lpszLabel, lpszSourceFile, iIconIndex)
-- hIcon : HICON
-- lpszLabel : LPWSTR
-- lpszSourceFile : LPWSTR
-- iIconIndex : DWORD
-- 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('OLE32.dll');
const OleMetafilePictFromIconAndLabel = lib.func('__stdcall', 'OleMetafilePictFromIconAndLabel', 'void *', ['void *', 'str16', 'str16', 'uint32_t']);
// OleMetafilePictFromIconAndLabel(hIcon, lpszLabel, lpszSourceFile, iIconIndex)
// hIcon : HICON -> 'void *'
// lpszLabel : LPWSTR -> 'str16'
// lpszSourceFile : LPWSTR -> 'str16'
// iIconIndex : DWORD -> 'uint32_t'
// 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("OLE32.dll", {
  OleMetafilePictFromIconAndLabel: { parameters: ["pointer", "buffer", "buffer", "u32"], result: "pointer" },
});
// lib.symbols.OleMetafilePictFromIconAndLabel(hIcon, lpszLabel, lpszSourceFile, iIconIndex)
// hIcon : HICON -> "pointer"
// lpszLabel : LPWSTR -> "buffer"
// lpszSourceFile : LPWSTR -> "buffer"
// iIconIndex : DWORD -> "u32"
// 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
void* OleMetafilePictFromIconAndLabel(
    void* hIcon,
    const uint16_t* lpszLabel,
    const uint16_t* lpszSourceFile,
    uint32_t iIconIndex);
C, "OLE32.dll");
// $ffi->OleMetafilePictFromIconAndLabel(hIcon, lpszLabel, lpszSourceFile, iIconIndex);
// hIcon : HICON
// lpszLabel : LPWSTR
// lpszSourceFile : LPWSTR
// iIconIndex : DWORD
// 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 Ole32 extends StdCallLibrary {
    Ole32 INSTANCE = Native.load("ole32", Ole32.class);
    Pointer OleMetafilePictFromIconAndLabel(
        Pointer hIcon,   // HICON
        WString lpszLabel,   // LPWSTR
        WString lpszSourceFile,   // LPWSTR
        int iIconIndex   // DWORD
    );
}

@[Link("ole32")]
lib LibOLE32
  fun OleMetafilePictFromIconAndLabel = OleMetafilePictFromIconAndLabel(
    hIcon : Void*,   # HICON
    lpszLabel : UInt16*,   # LPWSTR
    lpszSourceFile : UInt16*,   # LPWSTR
    iIconIndex : UInt32   # DWORD
  ) : Void*
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 OleMetafilePictFromIconAndLabelNative = Pointer<Void> Function(Pointer<Void>, Pointer<Utf16>, Pointer<Utf16>, Uint32);
typedef OleMetafilePictFromIconAndLabelDart = Pointer<Void> Function(Pointer<Void>, Pointer<Utf16>, Pointer<Utf16>, int);
final OleMetafilePictFromIconAndLabel = DynamicLibrary.open('OLE32.dll')
    .lookupFunction<OleMetafilePictFromIconAndLabelNative, OleMetafilePictFromIconAndLabelDart>('OleMetafilePictFromIconAndLabel');
// hIcon : HICON -> Pointer<Void>
// lpszLabel : LPWSTR -> Pointer<Utf16>
// lpszSourceFile : LPWSTR -> Pointer<Utf16>
// iIconIndex : DWORD -> Uint32
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function OleMetafilePictFromIconAndLabel(
  hIcon: THandle;   // HICON
  lpszLabel: PWideChar;   // LPWSTR
  lpszSourceFile: PWideChar;   // LPWSTR
  iIconIndex: DWORD   // DWORD
): THandle; stdcall;
  external 'OLE32.dll' name 'OleMetafilePictFromIconAndLabel';

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

foreign import stdcall safe "OleMetafilePictFromIconAndLabel"
  c_OleMetafilePictFromIconAndLabel :: Ptr () -> CWString -> CWString -> Word32 -> IO (Ptr ())
-- hIcon : HICON -> Ptr ()
-- lpszLabel : LPWSTR -> CWString
-- lpszSourceFile : LPWSTR -> CWString
-- iIconIndex : DWORD -> Word32
-- 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 olemetafilepictfromiconandlabel =
  foreign "OleMetafilePictFromIconAndLabel"
    ((ptr void) @-> (ptr uint16_t) @-> (ptr uint16_t) @-> uint32_t @-> returning (ptr void))
(* hIcon : HICON -> (ptr void) *)
(* lpszLabel : LPWSTR -> (ptr uint16_t) *)
(* lpszSourceFile : LPWSTR -> (ptr uint16_t) *)
(* iIconIndex : DWORD -> uint32_t *)
(* 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 ole32 (t "OLE32.dll"))
(cffi:use-foreign-library ole32)

(cffi:defcfun ("OleMetafilePictFromIconAndLabel" ole-metafile-pict-from-icon-and-label :convention :stdcall) :pointer
  (h-icon :pointer)   ; HICON
  (lpsz-label (:string :encoding :utf-16le))   ; LPWSTR
  (lpsz-source-file (:string :encoding :utf-16le))   ; LPWSTR
  (i-icon-index :uint32))   ; DWORD
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $OleMetafilePictFromIconAndLabel = Win32::API::More->new('OLE32',
    'HANDLE OleMetafilePictFromIconAndLabel(HANDLE hIcon, LPCWSTR lpszLabel, LPCWSTR lpszSourceFile, DWORD iIconIndex)');
# my $ret = $OleMetafilePictFromIconAndLabel->Call($hIcon, $lpszLabel, $lpszSourceFile, $iIconIndex);
# hIcon : HICON -> HANDLE
# lpszLabel : LPWSTR -> LPCWSTR
# lpszSourceFile : LPWSTR -> LPCWSTR
# iIconIndex : DWORD -> DWORD
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。