StrChrNW

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

LPWSTR StrChrNW(
    LPCWSTR pszStart,
    WCHAR wMatch,
    DWORD cchMax
);

<DllImport("SHLWAPI.dll", ExactSpelling:=True)>
Public Shared Function StrChrNW(
    <MarshalAs(UnmanagedType.LPWStr)> pszStart As String,   ' LPCWSTR
    wMatch As Char,   ' WCHAR
    cchMax As UInteger   ' DWORD
) As IntPtr
End Function

' pszStart : LPCWSTR
' wMatch : WCHAR
' cchMax : DWORD
Declare PtrSafe Function StrChrNW Lib "shlwapi" ( _
    ByVal pszStart As LongPtr, _
    ByVal wMatch As Integer, _
    ByVal cchMax 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

StrChrNW = ctypes.windll.shlwapi.StrChrNW
StrChrNW.restype = wintypes.LPWSTR
StrChrNW.argtypes = [
    wintypes.LPCWSTR,  # pszStart : LPCWSTR
    ctypes.c_wchar,  # wMatch : WCHAR
    wintypes.DWORD,  # cchMax : DWORD
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('SHLWAPI.dll')
StrChrNW = Fiddle::Function.new(
  lib['StrChrNW'],
  [
    Fiddle::TYPE_VOIDP,  # pszStart : LPCWSTR
    Fiddle::TYPE_SHORT,  # wMatch : WCHAR
    -Fiddle::TYPE_INT,  # cchMax : DWORD
  ],
  Fiddle::TYPE_VOIDP)

#[link(name = "shlwapi")]
extern "system" {
    fn StrChrNW(
        pszStart: *const u16,  // LPCWSTR
        wMatch: u16,  // WCHAR
        cchMax: u32  // DWORD
    ) -> *mut u16;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("SHLWAPI.dll")]
public static extern IntPtr StrChrNW([MarshalAs(UnmanagedType.LPWStr)] string pszStart, char wMatch, uint cchMax);
"@
$api = Add-Type -MemberDefinition $sig -Name 'SHLWAPI_StrChrNW' -Namespace Win32 -PassThru
# $api::StrChrNW(pszStart, wMatch, cchMax)

#uselib "SHLWAPI.dll"
#func global StrChrNW "StrChrNW" sptr, sptr, sptr
; StrChrNW pszStart, wMatch, cchMax   ; 戻り値は stat
; pszStart : LPCWSTR -> "sptr"
; wMatch : WCHAR -> "sptr"
; cchMax : 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 "SHLWAPI.dll"
#cfunc global StrChrNW "StrChrNW" wstr, int, int
; res = StrChrNW(pszStart, wMatch, cchMax)
; pszStart : LPCWSTR -> "wstr"
; wMatch : WCHAR -> "int"
; cchMax : DWORD -> "int"

; LPWSTR StrChrNW(LPCWSTR pszStart, WCHAR wMatch, DWORD cchMax)
#uselib "SHLWAPI.dll"
#cfunc global StrChrNW "StrChrNW" wstr, int, int
; res = StrChrNW(pszStart, wMatch, cchMax)
; pszStart : LPCWSTR -> "wstr"
; wMatch : WCHAR -> "int"
; cchMax : DWORD -> "int"

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

var (
	shlwapi = windows.NewLazySystemDLL("SHLWAPI.dll")
	procStrChrNW = shlwapi.NewProc("StrChrNW")
)

// pszStart (LPCWSTR), wMatch (WCHAR), cchMax (DWORD)
r1, _, err := procStrChrNW.Call(
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(pszStart))),
	uintptr(wMatch),
	uintptr(cchMax),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // LPWSTR

function StrChrNW(
  pszStart: PWideChar;   // LPCWSTR
  wMatch: WideChar;   // WCHAR
  cchMax: DWORD   // DWORD
): PWideChar; stdcall;
  external 'SHLWAPI.dll' name 'StrChrNW';

result := DllCall("SHLWAPI\StrChrNW"
    , "WStr", pszStart   ; LPCWSTR
    , "Short", wMatch   ; WCHAR
    , "UInt", cchMax   ; DWORD
    , "Ptr")   ; return: LPWSTR

●StrChrNW(pszStart, wMatch, cchMax) = DLL("SHLWAPI.dll", "char* StrChrNW(char*, int, dword)")
# 呼び出し: StrChrNW(pszStart, wMatch, cchMax)
# pszStart : LPCWSTR -> "char*"
# wMatch : WCHAR -> "int"
# cchMax : 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 "shlwapi" fn StrChrNW(
    pszStart: [*c]const u16, // LPCWSTR
    wMatch: u16, // WCHAR
    cchMax: u32 // DWORD
) callconv(std.os.windows.WINAPI) [*c]const u16;

proc StrChrNW(
    pszStart: WideCString,  # LPCWSTR
    wMatch: uint16,  # WCHAR
    cchMax: uint32  # DWORD
): WideCString {.importc: "StrChrNW", stdcall, dynlib: "SHLWAPI.dll".}

pragma(lib, "shlwapi");
extern(Windows)
const(wchar)* StrChrNW(
    const(wchar)* pszStart,   // LPCWSTR
    wchar wMatch,   // WCHAR
    uint cchMax   // DWORD
);

ccall((:StrChrNW, "SHLWAPI.dll"), stdcall, Cwstring,
      (Cwstring, UInt16, UInt32),
      pszStart, wMatch, cchMax)
# pszStart : LPCWSTR -> Cwstring
# wMatch : WCHAR -> UInt16
# cchMax : DWORD -> UInt32
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
const uint16_t* StrChrNW(
    const uint16_t* pszStart,
    uint16_t wMatch,
    uint32_t cchMax);
]]
local shlwapi = ffi.load("shlwapi")
-- shlwapi.StrChrNW(pszStart, wMatch, cchMax)
-- pszStart : LPCWSTR
-- wMatch : WCHAR
-- cchMax : 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('SHLWAPI.dll');
const StrChrNW = lib.func('__stdcall', 'StrChrNW', 'void *', ['str16', 'uint16_t', 'uint32_t']);
// StrChrNW(pszStart, wMatch, cchMax)
// pszStart : LPCWSTR -> 'str16'
// wMatch : WCHAR -> 'uint16_t'
// cchMax : 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("SHLWAPI.dll", {
  StrChrNW: { parameters: ["buffer", "u16", "u32"], result: "pointer" },
});
// lib.symbols.StrChrNW(pszStart, wMatch, cchMax)
// pszStart : LPCWSTR -> "buffer"
// wMatch : WCHAR -> "u16"
// cchMax : 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
const uint16_t* StrChrNW(
    const uint16_t* pszStart,
    uint16_t wMatch,
    uint32_t cchMax);
C, "SHLWAPI.dll");
// $ffi->StrChrNW(pszStart, wMatch, cchMax);
// pszStart : LPCWSTR
// wMatch : WCHAR
// cchMax : 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 Shlwapi extends StdCallLibrary {
    Shlwapi INSTANCE = Native.load("shlwapi", Shlwapi.class);
    Pointer StrChrNW(
        WString pszStart,   // LPCWSTR
        char wMatch,   // WCHAR
        int cchMax   // DWORD
    );
}

@[Link("shlwapi")]
lib LibSHLWAPI
  fun StrChrNW = StrChrNW(
    pszStart : UInt16*,   # LPCWSTR
    wMatch : UInt16,   # WCHAR
    cchMax : UInt32   # DWORD
  ) : UInt16*
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 StrChrNWNative = Pointer<Utf16> Function(Pointer<Utf16>, Uint16, Uint32);
typedef StrChrNWDart = Pointer<Utf16> Function(Pointer<Utf16>, int, int);
final StrChrNW = DynamicLibrary.open('SHLWAPI.dll')
    .lookupFunction<StrChrNWNative, StrChrNWDart>('StrChrNW');
// pszStart : LPCWSTR -> Pointer<Utf16>
// wMatch : WCHAR -> Uint16
// cchMax : DWORD -> Uint32
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function StrChrNW(
  pszStart: PWideChar;   // LPCWSTR
  wMatch: WideChar;   // WCHAR
  cchMax: DWORD   // DWORD
): PWideChar; stdcall;
  external 'SHLWAPI.dll' name 'StrChrNW';

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

foreign import stdcall safe "StrChrNW"
  c_StrChrNW :: CWString -> Word16 -> Word32 -> IO CWString
-- pszStart : LPCWSTR -> CWString
-- wMatch : WCHAR -> Word16
-- cchMax : 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 strchrnw =
  foreign "StrChrNW"
    ((ptr uint16_t) @-> uint16_t @-> uint32_t @-> returning (ptr uint16_t))
(* pszStart : LPCWSTR -> (ptr uint16_t) *)
(* wMatch : WCHAR -> uint16_t *)
(* cchMax : 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 shlwapi (t "SHLWAPI.dll"))
(cffi:use-foreign-library shlwapi)

(cffi:defcfun ("StrChrNW" str-chr-nw :convention :stdcall) (:string :encoding :utf-16le)
  (psz-start (:string :encoding :utf-16le))   ; LPCWSTR
  (w-match :uint16)   ; WCHAR
  (cch-max :uint32))   ; DWORD
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $StrChrNW = Win32::API::More->new('SHLWAPI',
    'LPWSTR StrChrNW(LPCWSTR pszStart, WORD wMatch, DWORD cchMax)');
# my $ret = $StrChrNW->Call($pszStart, $wMatch, $cchMax);
# pszStart : LPCWSTR -> LPCWSTR
# wMatch : WCHAR -> WORD
# cchMax : DWORD -> DWORD
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。