ures_getUTF8StringByKey

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

LPSTR ures_getUTF8StringByKey(
    const UResourceBundle* resB,
    LPCSTR key,
    LPSTR dest,
    INT* pLength,
    CHAR forceCopy,
    UErrorCode* status
);

<DllImport("icuuc.dll", ExactSpelling:=True, CallingConvention:=CallingConvention.Cdecl)>
Public Shared Function ures_getUTF8StringByKey(
    ByRef resB As IntPtr,   ' UResourceBundle*
    <MarshalAs(UnmanagedType.LPStr)> key As String,   ' LPCSTR
    <MarshalAs(UnmanagedType.LPStr)> dest As String,   ' LPSTR
    ByRef pLength As Integer,   ' INT* in/out
    forceCopy As SByte,   ' CHAR
    ByRef status As Integer   ' UErrorCode* in/out
) As IntPtr
End Function

' resB : UResourceBundle*
' key : LPCSTR
' dest : LPSTR
' pLength : INT* in/out
' forceCopy : CHAR
' status : UErrorCode* in/out
Declare PtrSafe Function ures_getUTF8StringByKey Lib "icuuc" ( _
    ByRef resB As LongPtr, _
    ByVal key As String, _
    ByVal dest As String, _
    ByRef pLength As Long, _
    ByVal forceCopy As Byte, _
    ByRef status 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

ures_getUTF8StringByKey = ctypes.cdll.icuuc.ures_getUTF8StringByKey
ures_getUTF8StringByKey.restype = wintypes.LPSTR
ures_getUTF8StringByKey.argtypes = [
    ctypes.c_void_p,  # resB : UResourceBundle*
    wintypes.LPCSTR,  # key : LPCSTR
    wintypes.LPCSTR,  # dest : LPSTR
    ctypes.POINTER(ctypes.c_int),  # pLength : INT* in/out
    ctypes.c_byte,  # forceCopy : CHAR
    ctypes.c_void_p,  # status : UErrorCode* in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('icuuc.dll')
ures_getUTF8StringByKey = Fiddle::Function.new(
  lib['ures_getUTF8StringByKey'],
  [
    Fiddle::TYPE_VOIDP,  # resB : UResourceBundle*
    Fiddle::TYPE_VOIDP,  # key : LPCSTR
    Fiddle::TYPE_VOIDP,  # dest : LPSTR
    Fiddle::TYPE_VOIDP,  # pLength : INT* in/out
    Fiddle::TYPE_CHAR,  # forceCopy : CHAR
    Fiddle::TYPE_VOIDP,  # status : UErrorCode* in/out
  ],
  Fiddle::TYPE_VOIDP, Fiddle::Function::CDECL)

#[link(name = "icuuc")]
extern "C" {
    fn ures_getUTF8StringByKey(
        resB: *const isize,  // UResourceBundle*
        key: *const u8,  // LPCSTR
        dest: *mut u8,  // LPSTR
        pLength: *mut i32,  // INT* in/out
        forceCopy: i8,  // CHAR
        status: *mut i32  // UErrorCode* in/out
    ) -> *mut u8;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("icuuc.dll", CallingConvention = CallingConvention.Cdecl)]
public static extern IntPtr ures_getUTF8StringByKey(ref IntPtr resB, [MarshalAs(UnmanagedType.LPStr)] string key, [MarshalAs(UnmanagedType.LPStr)] string dest, ref int pLength, sbyte forceCopy, ref int status);
"@
$api = Add-Type -MemberDefinition $sig -Name 'icuuc_ures_getUTF8StringByKey' -Namespace Win32 -PassThru
# $api::ures_getUTF8StringByKey(resB, key, dest, pLength, forceCopy, status)

#uselib "icuuc.dll"
#func global ures_getUTF8StringByKey "ures_getUTF8StringByKey" sptr, sptr, sptr, sptr, sptr, sptr
; ures_getUTF8StringByKey resB, key, dest, varptr(pLength), forceCopy, status   ; 戻り値は stat
; resB : UResourceBundle* -> "sptr"
; key : LPCSTR -> "sptr"
; dest : LPSTR -> "sptr"
; pLength : INT* in/out -> "sptr"
; forceCopy : CHAR -> "sptr"
; status : UErrorCode* in/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。

#uselib "icuuc.dll"
#cfunc global ures_getUTF8StringByKey "ures_getUTF8StringByKey" int, str, str, var, int, int
; res = ures_getUTF8StringByKey(resB, key, dest, pLength, forceCopy, status)
; resB : UResourceBundle* -> "int"
; key : LPCSTR -> "str"
; dest : LPSTR -> "str"
; pLength : INT* in/out -> "var"
; forceCopy : CHAR -> "int"
; status : UErrorCode* in/out -> "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。

; LPSTR ures_getUTF8StringByKey(UResourceBundle* resB, LPCSTR key, LPSTR dest, INT* pLength, CHAR forceCopy, UErrorCode* status)
#uselib "icuuc.dll"
#cfunc global ures_getUTF8StringByKey "ures_getUTF8StringByKey" int, str, str, var, int, int
; res = ures_getUTF8StringByKey(resB, key, dest, pLength, forceCopy, status)
; resB : UResourceBundle* -> "int"
; key : LPCSTR -> "str"
; dest : LPSTR -> "str"
; pLength : INT* in/out -> "var"
; forceCopy : CHAR -> "int"
; status : UErrorCode* in/out -> "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 (
	icuuc = windows.NewLazySystemDLL("icuuc.dll")
	procures_getUTF8StringByKey = icuuc.NewProc("ures_getUTF8StringByKey")
)

// resB (UResourceBundle*), key (LPCSTR), dest (LPSTR), pLength (INT* in/out), forceCopy (CHAR), status (UErrorCode* in/out)
r1, _, err := procures_getUTF8StringByKey.Call(
	uintptr(resB),
	uintptr(unsafe.Pointer(windows.BytePtrFromString(key))),
	uintptr(unsafe.Pointer(windows.BytePtrFromString(dest))),
	uintptr(pLength),
	uintptr(forceCopy),
	uintptr(status),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // LPSTR

function ures_getUTF8StringByKey(
  resB: Pointer;   // UResourceBundle*
  key: PAnsiChar;   // LPCSTR
  dest: PAnsiChar;   // LPSTR
  pLength: Pointer;   // INT* in/out
  forceCopy: Shortint;   // CHAR
  status: Pointer   // UErrorCode* in/out
): PAnsiChar; cdecl;
  external 'icuuc.dll' name 'ures_getUTF8StringByKey';

result := DllCall("icuuc\ures_getUTF8StringByKey"
    , "Ptr", resB   ; UResourceBundle*
    , "AStr", key   ; LPCSTR
    , "AStr", dest   ; LPSTR
    , "Ptr", pLength   ; INT* in/out
    , "Char", forceCopy   ; CHAR
    , "Ptr", status   ; UErrorCode* in/out
    , "Cdecl Ptr")   ; return: LPSTR

●ures_getUTF8StringByKey(resB, key, dest, pLength, forceCopy, status) = DLL("icuuc.dll", "char* ures_getUTF8StringByKey(void*, char*, char*, void*, char, void*)")
# 呼び出し: ures_getUTF8StringByKey(resB, key, dest, pLength, forceCopy, status)
# resB : UResourceBundle* -> "void*"
# key : LPCSTR -> "char*"
# dest : LPSTR -> "char*"
# pLength : INT* in/out -> "void*"
# forceCopy : CHAR -> "char"
# status : UErrorCode* in/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)。
# ※cdecl関数。DLL()宣言はstdcall前提。cdeclは EXEC_PTR(`cdecl`,…) を使用。