ucal_open

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

void** ucal_open(
    const WORD* zoneID,
    INT len,
    LPCSTR locale,
    UCalendarType type,
    UErrorCode* status
);

<DllImport("icuin.dll", ExactSpelling:=True, CallingConvention:=CallingConvention.Cdecl)>
Public Shared Function ucal_open(
    ByRef zoneID As UShort,   ' WORD*
    len As Integer,   ' INT
    <MarshalAs(UnmanagedType.LPStr)> locale As String,   ' LPCSTR
    type As Integer,   ' UCalendarType
    ByRef status As Integer   ' UErrorCode* in/out
) As IntPtr
End Function

' zoneID : WORD*
' len : INT
' locale : LPCSTR
' type : UCalendarType
' status : UErrorCode* in/out
Declare PtrSafe Function ucal_open Lib "icuin" ( _
    ByRef zoneID As Integer, _
    ByVal len As Long, _
    ByVal locale As String, _
    ByVal type 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

ucal_open = ctypes.cdll.icuin.ucal_open
ucal_open.restype = ctypes.c_void_p
ucal_open.argtypes = [
    ctypes.POINTER(ctypes.c_ushort),  # zoneID : WORD*
    ctypes.c_int,  # len : INT
    wintypes.LPCSTR,  # locale : LPCSTR
    ctypes.c_int,  # type : UCalendarType
    ctypes.c_void_p,  # status : UErrorCode* in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('icuin.dll')
ucal_open = Fiddle::Function.new(
  lib['ucal_open'],
  [
    Fiddle::TYPE_VOIDP,  # zoneID : WORD*
    Fiddle::TYPE_INT,  # len : INT
    Fiddle::TYPE_VOIDP,  # locale : LPCSTR
    Fiddle::TYPE_INT,  # type : UCalendarType
    Fiddle::TYPE_VOIDP,  # status : UErrorCode* in/out
  ],
  Fiddle::TYPE_VOIDP, Fiddle::Function::CDECL)

#[link(name = "icuin")]
extern "C" {
    fn ucal_open(
        zoneID: *const u16,  // WORD*
        len: i32,  // INT
        locale: *const u8,  // LPCSTR
        type: i32,  // UCalendarType
        status: *mut i32  // UErrorCode* in/out
    ) -> *mut *mut ();
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("icuin.dll", CallingConvention = CallingConvention.Cdecl)]
public static extern IntPtr ucal_open(ref ushort zoneID, int len, [MarshalAs(UnmanagedType.LPStr)] string locale, int type, ref int status);
"@
$api = Add-Type -MemberDefinition $sig -Name 'icuin_ucal_open' -Namespace Win32 -PassThru
# $api::ucal_open(zoneID, len, locale, type, status)

#uselib "icuin.dll"
#func global ucal_open "ucal_open" sptr, sptr, sptr, sptr, sptr
; ucal_open varptr(zoneID), len, locale, type, status   ; 戻り値は stat
; zoneID : WORD* -> "sptr"
; len : INT -> "sptr"
; locale : LPCSTR -> "sptr"
; type : UCalendarType -> "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 "icuin.dll"
#cfunc global ucal_open "ucal_open" var, int, str, int, int
; res = ucal_open(zoneID, len, locale, type, status)
; zoneID : WORD* -> "var"
; len : INT -> "int"
; locale : LPCSTR -> "str"
; type : UCalendarType -> "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。

; void** ucal_open(WORD* zoneID, INT len, LPCSTR locale, UCalendarType type, UErrorCode* status)
#uselib "icuin.dll"
#cfunc global ucal_open "ucal_open" var, int, str, int, int
; res = ucal_open(zoneID, len, locale, type, status)
; zoneID : WORD* -> "var"
; len : INT -> "int"
; locale : LPCSTR -> "str"
; type : UCalendarType -> "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 (
	icuin = windows.NewLazySystemDLL("icuin.dll")
	procucal_open = icuin.NewProc("ucal_open")
)

// zoneID (WORD*), len (INT), locale (LPCSTR), type (UCalendarType), status (UErrorCode* in/out)
r1, _, err := procucal_open.Call(
	uintptr(zoneID),
	uintptr(len),
	uintptr(unsafe.Pointer(windows.BytePtrFromString(locale))),
	uintptr(type),
	uintptr(status),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // void**

function ucal_open(
  zoneID: Pointer;   // WORD*
  len: Integer;   // INT
  locale: PAnsiChar;   // LPCSTR
  type: Integer;   // UCalendarType
  status: Pointer   // UErrorCode* in/out
): Pointer; cdecl;
  external 'icuin.dll' name 'ucal_open';

result := DllCall("icuin\ucal_open"
    , "Ptr", zoneID   ; WORD*
    , "Int", len   ; INT
    , "AStr", locale   ; LPCSTR
    , "Int", type   ; UCalendarType
    , "Ptr", status   ; UErrorCode* in/out
    , "Cdecl Ptr")   ; return: void**

●ucal_open(zoneID, len, locale, type, status) = DLL("icuin.dll", "void* ucal_open(void*, int, char*, int, void*)")
# 呼び出し: ucal_open(zoneID, len, locale, type, status)
# zoneID : WORD* -> "void*"
# len : INT -> "int"
# locale : LPCSTR -> "char*"
# type : UCalendarType -> "int"
# 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。