SHRegDeleteEmptyUSKeyW

// SHLWAPI.dll  (Unicode / -W)
#include <windows.h>

WIN32_ERROR SHRegDeleteEmptyUSKeyW(
    INT_PTR hUSKey,
    LPCWSTR pwzSubKey,
    SHREGDEL_FLAGS delRegFlags
);

<DllImport("SHLWAPI.dll", CharSet:=CharSet.Unicode, ExactSpelling:=True)>
Public Shared Function SHRegDeleteEmptyUSKeyW(
    hUSKey As IntPtr,   ' INT_PTR
    <MarshalAs(UnmanagedType.LPWStr)> pwzSubKey As String,   ' LPCWSTR
    delRegFlags As Integer   ' SHREGDEL_FLAGS
) As UInteger
End Function

' hUSKey : INT_PTR
' pwzSubKey : LPCWSTR
' delRegFlags : SHREGDEL_FLAGS
Declare PtrSafe Function SHRegDeleteEmptyUSKeyW Lib "shlwapi" ( _
    ByVal hUSKey As LongPtr, _
    ByVal pwzSubKey As LongPtr, _
    ByVal delRegFlags As Long) As Long
' Unicode(W): 文字列は ByVal As LongPtr とし StrPtr(unicodeStr) を渡す
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

SHRegDeleteEmptyUSKeyW = ctypes.windll.shlwapi.SHRegDeleteEmptyUSKeyW
SHRegDeleteEmptyUSKeyW.restype = wintypes.DWORD
SHRegDeleteEmptyUSKeyW.argtypes = [
    ctypes.c_ssize_t,  # hUSKey : INT_PTR
    wintypes.LPCWSTR,  # pwzSubKey : LPCWSTR
    ctypes.c_int,  # delRegFlags : SHREGDEL_FLAGS
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('SHLWAPI.dll')
SHRegDeleteEmptyUSKeyW = Fiddle::Function.new(
  lib['SHRegDeleteEmptyUSKeyW'],
  [
    Fiddle::TYPE_INTPTR_T,  # hUSKey : INT_PTR
    Fiddle::TYPE_VOIDP,  # pwzSubKey : LPCWSTR
    Fiddle::TYPE_INT,  # delRegFlags : SHREGDEL_FLAGS
  ],
  -Fiddle::TYPE_INT)
# Wide strings: pass str.encode("UTF-16LE") + "\x00\x00"

#[link(name = "shlwapi")]
extern "system" {
    fn SHRegDeleteEmptyUSKeyW(
        hUSKey: isize,  // INT_PTR
        pwzSubKey: *const u16,  // LPCWSTR
        delRegFlags: i32  // SHREGDEL_FLAGS
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("SHLWAPI.dll", CharSet = CharSet.Unicode)]
public static extern uint SHRegDeleteEmptyUSKeyW(IntPtr hUSKey, [MarshalAs(UnmanagedType.LPWStr)] string pwzSubKey, int delRegFlags);
"@
$api = Add-Type -MemberDefinition $sig -Name 'SHLWAPI_SHRegDeleteEmptyUSKeyW' -Namespace Win32 -PassThru
# $api::SHRegDeleteEmptyUSKeyW(hUSKey, pwzSubKey, delRegFlags)

#uselib "SHLWAPI.dll"
#func global SHRegDeleteEmptyUSKeyW "SHRegDeleteEmptyUSKeyW" wptr, wptr, wptr
; SHRegDeleteEmptyUSKeyW hUSKey, pwzSubKey, delRegFlags   ; 戻り値は stat
; hUSKey : INT_PTR -> "wptr"
; pwzSubKey : LPCWSTR -> "wptr"
; delRegFlags : SHREGDEL_FLAGS -> "wptr"
; ※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 "SHLWAPI.dll"
#cfunc global SHRegDeleteEmptyUSKeyW "SHRegDeleteEmptyUSKeyW" sptr, wstr, int
; res = SHRegDeleteEmptyUSKeyW(hUSKey, pwzSubKey, delRegFlags)
; hUSKey : INT_PTR -> "sptr"
; pwzSubKey : LPCWSTR -> "wstr"
; delRegFlags : SHREGDEL_FLAGS -> "int"

; WIN32_ERROR SHRegDeleteEmptyUSKeyW(INT_PTR hUSKey, LPCWSTR pwzSubKey, SHREGDEL_FLAGS delRegFlags)
#uselib "SHLWAPI.dll"
#cfunc global SHRegDeleteEmptyUSKeyW "SHRegDeleteEmptyUSKeyW" intptr, wstr, int
; res = SHRegDeleteEmptyUSKeyW(hUSKey, pwzSubKey, delRegFlags)
; hUSKey : INT_PTR -> "intptr"
; pwzSubKey : LPCWSTR -> "wstr"
; delRegFlags : SHREGDEL_FLAGS -> "int"

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

var (
	shlwapi = windows.NewLazySystemDLL("SHLWAPI.dll")
	procSHRegDeleteEmptyUSKeyW = shlwapi.NewProc("SHRegDeleteEmptyUSKeyW")
)

// hUSKey (INT_PTR), pwzSubKey (LPCWSTR), delRegFlags (SHREGDEL_FLAGS)
r1, _, err := procSHRegDeleteEmptyUSKeyW.Call(
	uintptr(hUSKey),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(pwzSubKey))),
	uintptr(delRegFlags),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // WIN32_ERROR

function SHRegDeleteEmptyUSKeyW(
  hUSKey: NativeInt;   // INT_PTR
  pwzSubKey: PWideChar;   // LPCWSTR
  delRegFlags: Integer   // SHREGDEL_FLAGS
): DWORD; stdcall;
  external 'SHLWAPI.dll' name 'SHRegDeleteEmptyUSKeyW';

result := DllCall("SHLWAPI\SHRegDeleteEmptyUSKeyW"
    , "Ptr", hUSKey   ; INT_PTR
    , "WStr", pwzSubKey   ; LPCWSTR
    , "Int", delRegFlags   ; SHREGDEL_FLAGS
    , "UInt")   ; return: WIN32_ERROR

●SHRegDeleteEmptyUSKeyW(hUSKey, pwzSubKey, delRegFlags) = DLL("SHLWAPI.dll", "dword SHRegDeleteEmptyUSKeyW(int, char*, int)")
# 呼び出し: SHRegDeleteEmptyUSKeyW(hUSKey, pwzSubKey, delRegFlags)
# hUSKey : INT_PTR -> "int"
# pwzSubKey : LPCWSTR -> "char*"
# delRegFlags : SHREGDEL_FLAGS -> "int"
# 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)。
# ※-W(Unicode)関数。なでしこ1はANSIのため -A 版の利用を推奨。

const std = @import("std");

extern "shlwapi" fn SHRegDeleteEmptyUSKeyW(
    hUSKey: isize, // INT_PTR
    pwzSubKey: [*c]const u16, // LPCWSTR
    delRegFlags: i32 // SHREGDEL_FLAGS
) callconv(std.os.windows.WINAPI) u32;
// Unicode(-W): UTF-16LE のヌル終端バッファ([*c]const u16)を渡す。

proc SHRegDeleteEmptyUSKeyW(
    hUSKey: int,  # INT_PTR
    pwzSubKey: WideCString,  # LPCWSTR
    delRegFlags: int32  # SHREGDEL_FLAGS
): uint32 {.importc: "SHRegDeleteEmptyUSKeyW", stdcall, dynlib: "SHLWAPI.dll".}
# Unicode(-W): WideCString は newWideCString("...") で生成。

pragma(lib, "shlwapi");
extern(Windows)
uint SHRegDeleteEmptyUSKeyW(
    ptrdiff_t hUSKey,   // INT_PTR
    const(wchar)* pwzSubKey,   // LPCWSTR
    int delRegFlags   // SHREGDEL_FLAGS
);

ccall((:SHRegDeleteEmptyUSKeyW, "SHLWAPI.dll"), stdcall, UInt32,
      (Int, Cwstring, Int32),
      hUSKey, pwzSubKey, delRegFlags)
# hUSKey : INT_PTR -> Int
# pwzSubKey : LPCWSTR -> Cwstring
# delRegFlags : SHREGDEL_FLAGS -> Int32
# stdcall は 32bit のみ意味を持つ(x64 では無視)。
# Unicode(-W): Cwstring には transcode(UInt16, "...") 等で UTF-16 を渡す。

local ffi = require("ffi")
ffi.cdef[[
uint32_t SHRegDeleteEmptyUSKeyW(
    intptr_t hUSKey,
    const uint16_t* pwzSubKey,
    int32_t delRegFlags);
]]
local shlwapi = ffi.load("shlwapi")
-- shlwapi.SHRegDeleteEmptyUSKeyW(hUSKey, pwzSubKey, delRegFlags)
-- hUSKey : INT_PTR
-- pwzSubKey : LPCWSTR
-- delRegFlags : SHREGDEL_FLAGS
-- 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。
-- Unicode(-W): uint16_t* には UTF-16LE のバッファ(ffi.new("uint16_t[?]", ...))を渡す。

const koffi = require('koffi');
const lib = koffi.load('SHLWAPI.dll');
const SHRegDeleteEmptyUSKeyW = lib.func('__stdcall', 'SHRegDeleteEmptyUSKeyW', 'uint32_t', ['intptr_t', 'str16', 'int32_t']);
// SHRegDeleteEmptyUSKeyW(hUSKey, pwzSubKey, delRegFlags)
// hUSKey : INT_PTR -> 'intptr_t'
// pwzSubKey : LPCWSTR -> 'str16'
// delRegFlags : SHREGDEL_FLAGS -> 'int32_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("SHLWAPI.dll", {
  SHRegDeleteEmptyUSKeyW: { parameters: ["isize", "buffer", "i32"], result: "u32" },
});
// lib.symbols.SHRegDeleteEmptyUSKeyW(hUSKey, pwzSubKey, delRegFlags)
// hUSKey : INT_PTR -> "isize"
// pwzSubKey : LPCWSTR -> "buffer"
// delRegFlags : SHREGDEL_FLAGS -> "i32"
// 文字列は "buffer"。Unicode(-W) は new TextEncoder() ではなく UTF-16LE のバイト列(末尾に \x00\x00)を Uint8Array で渡す。
// 値渡し構造体は { struct: [ ...field types... ] } を使用。

<?php
$ffi = FFI::cdef(<<<C
uint32_t SHRegDeleteEmptyUSKeyW(
    intptr_t hUSKey,
    const uint16_t* pwzSubKey,
    int32_t delRegFlags);
C, "SHLWAPI.dll");
// $ffi->SHRegDeleteEmptyUSKeyW(hUSKey, pwzSubKey, delRegFlags);
// hUSKey : INT_PTR
// pwzSubKey : LPCWSTR
// delRegFlags : SHREGDEL_FLAGS
// 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 Shlwapi extends StdCallLibrary {
    Shlwapi INSTANCE = Native.load("shlwapi", Shlwapi.class, W32APIOptions.UNICODE_OPTIONS);
    int SHRegDeleteEmptyUSKeyW(
        long hUSKey,   // INT_PTR
        WString pwzSubKey,   // LPCWSTR
        int delRegFlags   // SHREGDEL_FLAGS
    );
}
// Unicode(-W): WString(入力)/char[](出力)で UTF-16 をマーシャリング。

@[Link("shlwapi")]
lib LibSHLWAPI
  fun SHRegDeleteEmptyUSKeyW = SHRegDeleteEmptyUSKeyW(
    hUSKey : LibC::SSizeT,   # INT_PTR
    pwzSubKey : UInt16*,   # LPCWSTR
    delRegFlags : Int32   # SHREGDEL_FLAGS
  ) : UInt32
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 SHRegDeleteEmptyUSKeyWNative = Uint32 Function(IntPtr, Pointer<Utf16>, Int32);
typedef SHRegDeleteEmptyUSKeyWDart = int Function(int, Pointer<Utf16>, int);
final SHRegDeleteEmptyUSKeyW = DynamicLibrary.open('SHLWAPI.dll')
    .lookupFunction<SHRegDeleteEmptyUSKeyWNative, SHRegDeleteEmptyUSKeyWDart>('SHRegDeleteEmptyUSKeyW');
// hUSKey : INT_PTR -> IntPtr
// pwzSubKey : LPCWSTR -> Pointer<Utf16>
// delRegFlags : SHREGDEL_FLAGS -> Int32
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function SHRegDeleteEmptyUSKeyW(
  hUSKey: NativeInt;   // INT_PTR
  pwzSubKey: PWideChar;   // LPCWSTR
  delRegFlags: Integer   // SHREGDEL_FLAGS
): DWORD; stdcall;
  external 'SHLWAPI.dll' name 'SHRegDeleteEmptyUSKeyW';

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

foreign import stdcall safe "SHRegDeleteEmptyUSKeyW"
  c_SHRegDeleteEmptyUSKeyW :: CIntPtr -> CWString -> Int32 -> IO Word32
-- hUSKey : INT_PTR -> CIntPtr
-- pwzSubKey : LPCWSTR -> CWString
-- delRegFlags : SHREGDEL_FLAGS -> Int32
-- 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 shregdeleteemptyuskeyw =
  foreign "SHRegDeleteEmptyUSKeyW"
    (intptr_t @-> (ptr uint16_t) @-> int32_t @-> returning uint32_t)
(* hUSKey : INT_PTR -> intptr_t *)
(* pwzSubKey : LPCWSTR -> (ptr uint16_t) *)
(* delRegFlags : SHREGDEL_FLAGS -> int32_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 shlwapi (t "SHLWAPI.dll"))
(cffi:use-foreign-library shlwapi)

(cffi:defcfun ("SHRegDeleteEmptyUSKeyW" shreg-delete-empty-uskey-w :convention :stdcall) :uint32
  (h-uskey :int64)   ; INT_PTR
  (pwz-sub-key (:string :encoding :utf-16le))   ; LPCWSTR
  (del-reg-flags :int32))   ; SHREGDEL_FLAGS
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $SHRegDeleteEmptyUSKeyW = Win32::API::More->new('SHLWAPI',
    'DWORD SHRegDeleteEmptyUSKeyW(LPARAM hUSKey, LPCWSTR pwzSubKey, int delRegFlags)');
# my $ret = $SHRegDeleteEmptyUSKeyW->Call($hUSKey, $pwzSubKey, $delRegFlags);
# hUSKey : INT_PTR -> LPARAM
# pwzSubKey : LPCWSTR -> LPCWSTR
# delRegFlags : SHREGDEL_FLAGS -> int
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。
# Unicode(-W): LPCWSTR/LPWSTR は Win32::API が UTF-16 変換を行う。