uenum_next

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

LPSTR uenum_next(
    UEnumeration* en,
    INT* resultLength,
    UErrorCode* status
);

<DllImport("icuuc.dll", ExactSpelling:=True, CallingConvention:=CallingConvention.Cdecl)>
Public Shared Function uenum_next(
    ByRef en As IntPtr,   ' UEnumeration* in/out
    ByRef resultLength As Integer,   ' INT* in/out
    ByRef status As Integer   ' UErrorCode* in/out
) As IntPtr
End Function

' en : UEnumeration* in/out
' resultLength : INT* in/out
' status : UErrorCode* in/out
Declare PtrSafe Function uenum_next Lib "icuuc" ( _
    ByRef en As LongPtr, _
    ByRef resultLength As Long, _
    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

uenum_next = ctypes.cdll.icuuc.uenum_next
uenum_next.restype = wintypes.LPSTR
uenum_next.argtypes = [
    ctypes.c_void_p,  # en : UEnumeration* in/out
    ctypes.POINTER(ctypes.c_int),  # resultLength : INT* in/out
    ctypes.c_void_p,  # status : UErrorCode* in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('icuuc.dll')
uenum_next = Fiddle::Function.new(
  lib['uenum_next'],
  [
    Fiddle::TYPE_VOIDP,  # en : UEnumeration* in/out
    Fiddle::TYPE_VOIDP,  # resultLength : INT* in/out
    Fiddle::TYPE_VOIDP,  # status : UErrorCode* in/out
  ],
  Fiddle::TYPE_VOIDP, Fiddle::Function::CDECL)

#[link(name = "icuuc")]
extern "C" {
    fn uenum_next(
        en: *mut isize,  // UEnumeration* in/out
        resultLength: *mut i32,  // INT* in/out
        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 uenum_next(ref IntPtr en, ref int resultLength, ref int status);
"@
$api = Add-Type -MemberDefinition $sig -Name 'icuuc_uenum_next' -Namespace Win32 -PassThru
# $api::uenum_next(en, resultLength, status)

#uselib "icuuc.dll"
#func global uenum_next "uenum_next" sptr, sptr, sptr
; uenum_next en, varptr(resultLength), status   ; 戻り値は stat
; en : UEnumeration* in/out -> "sptr"
; resultLength : INT* in/out -> "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 uenum_next "uenum_next" int, var, int
; res = uenum_next(en, resultLength, status)
; en : UEnumeration* in/out -> "int"
; resultLength : INT* in/out -> "var"
; 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 uenum_next(UEnumeration* en, INT* resultLength, UErrorCode* status)
#uselib "icuuc.dll"
#cfunc global uenum_next "uenum_next" int, var, int
; res = uenum_next(en, resultLength, status)
; en : UEnumeration* in/out -> "int"
; resultLength : INT* in/out -> "var"
; 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")
	procuenum_next = icuuc.NewProc("uenum_next")
)

// en (UEnumeration* in/out), resultLength (INT* in/out), status (UErrorCode* in/out)
r1, _, err := procuenum_next.Call(
	uintptr(en),
	uintptr(resultLength),
	uintptr(status),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // LPSTR

function uenum_next(
  en: Pointer;   // UEnumeration* in/out
  resultLength: Pointer;   // INT* in/out
  status: Pointer   // UErrorCode* in/out
): PAnsiChar; cdecl;
  external 'icuuc.dll' name 'uenum_next';

result := DllCall("icuuc\uenum_next"
    , "Ptr", en   ; UEnumeration* in/out
    , "Ptr", resultLength   ; INT* in/out
    , "Ptr", status   ; UErrorCode* in/out
    , "Cdecl Ptr")   ; return: LPSTR

●uenum_next(en, resultLength, status) = DLL("icuuc.dll", "char* uenum_next(void*, void*, void*)")
# 呼び出し: uenum_next(en, resultLength, status)
# en : UEnumeration* in/out -> "void*"
# resultLength : INT* in/out -> "void*"
# 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。