GetStateTextW

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

DWORD GetStateTextW(
    DWORD lStateBit,
    LPWSTR lpszState,   // optional
    DWORD cchState
);

<DllImport("OLEACC.dll", CharSet:=CharSet.Unicode, SetLastError:=True, ExactSpelling:=True)>
Public Shared Function GetStateTextW(
    lStateBit As UInteger,   ' DWORD
    <MarshalAs(UnmanagedType.LPWStr)> lpszState As System.Text.StringBuilder,   ' LPWSTR optional, out
    cchState As UInteger   ' DWORD
) As UInteger
End Function

' lStateBit : DWORD
' lpszState : LPWSTR optional, out
' cchState : DWORD
Declare PtrSafe Function GetStateTextW Lib "oleacc" ( _
    ByVal lStateBit As Long, _
    ByVal lpszState As LongPtr, _
    ByVal cchState 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

GetStateTextW = ctypes.windll.oleacc.GetStateTextW
GetStateTextW.restype = wintypes.DWORD
GetStateTextW.argtypes = [
    wintypes.DWORD,  # lStateBit : DWORD
    wintypes.LPWSTR,  # lpszState : LPWSTR optional, out
    wintypes.DWORD,  # cchState : DWORD
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('OLEACC.dll')
GetStateTextW = Fiddle::Function.new(
  lib['GetStateTextW'],
  [
    -Fiddle::TYPE_INT,  # lStateBit : DWORD
    Fiddle::TYPE_VOIDP,  # lpszState : LPWSTR optional, out
    -Fiddle::TYPE_INT,  # cchState : DWORD
  ],
  -Fiddle::TYPE_INT)
# Wide strings: pass str.encode("UTF-16LE") + "\x00\x00"

#[link(name = "oleacc")]
extern "system" {
    fn GetStateTextW(
        lStateBit: u32,  // DWORD
        lpszState: *mut u16,  // LPWSTR optional, out
        cchState: u32  // DWORD
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("OLEACC.dll", CharSet = CharSet.Unicode, SetLastError = true)]
public static extern uint GetStateTextW(uint lStateBit, [MarshalAs(UnmanagedType.LPWStr)] System.Text.StringBuilder lpszState, uint cchState);
"@
$api = Add-Type -MemberDefinition $sig -Name 'OLEACC_GetStateTextW' -Namespace Win32 -PassThru
# $api::GetStateTextW(lStateBit, lpszState, cchState)

#uselib "OLEACC.dll"
#func global GetStateTextW "GetStateTextW" wptr, wptr, wptr
; GetStateTextW lStateBit, varptr(lpszState), cchState   ; 戻り値は stat
; lStateBit : DWORD -> "wptr"
; lpszState : LPWSTR optional, out -> "wptr"
; cchState : DWORD -> "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 "OLEACC.dll"
#cfunc global GetStateTextW "GetStateTextW" int, var, int
; res = GetStateTextW(lStateBit, lpszState, cchState)
; lStateBit : DWORD -> "int"
; lpszState : LPWSTR optional, out -> "var"
; cchState : DWORD -> "int"
; ※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。

; DWORD GetStateTextW(DWORD lStateBit, LPWSTR lpszState, DWORD cchState)
#uselib "OLEACC.dll"
#cfunc global GetStateTextW "GetStateTextW" int, var, int
; res = GetStateTextW(lStateBit, lpszState, cchState)
; lStateBit : DWORD -> "int"
; lpszState : LPWSTR optional, out -> "var"
; cchState : DWORD -> "int"
; ※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。

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

var (
	oleacc = windows.NewLazySystemDLL("OLEACC.dll")
	procGetStateTextW = oleacc.NewProc("GetStateTextW")
)

// lStateBit (DWORD), lpszState (LPWSTR optional, out), cchState (DWORD)
r1, _, err := procGetStateTextW.Call(
	uintptr(lStateBit),
	uintptr(lpszState),
	uintptr(cchState),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function GetStateTextW(
  lStateBit: DWORD;   // DWORD
  lpszState: PWideChar;   // LPWSTR optional, out
  cchState: DWORD   // DWORD
): DWORD; stdcall;
  external 'OLEACC.dll' name 'GetStateTextW';

result := DllCall("OLEACC\GetStateTextW"
    , "UInt", lStateBit   ; DWORD
    , "Ptr", lpszState   ; LPWSTR optional, out
    , "UInt", cchState   ; DWORD
    , "UInt")   ; return: DWORD

●GetStateTextW(lStateBit, lpszState, cchState) = DLL("OLEACC.dll", "dword GetStateTextW(dword, char*, dword)")
# 呼び出し: GetStateTextW(lStateBit, lpszState, cchState)
# lStateBit : DWORD -> "dword"
# lpszState : LPWSTR optional, out -> "char*"
# cchState : 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)。
# ※-W(Unicode)関数。なでしこ1はANSIのため -A 版の利用を推奨。