ulocdata_getLocaleDisplayPattern

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

INT ulocdata_getLocaleDisplayPattern(
    ULocaleData* uld,
    WORD* pattern,
    INT patternCapacity,
    UErrorCode* status
);

<DllImport("icuin.dll", ExactSpelling:=True, CallingConvention:=CallingConvention.Cdecl)>
Public Shared Function ulocdata_getLocaleDisplayPattern(
    ByRef uld As IntPtr,   ' ULocaleData* in/out
    ByRef pattern As UShort,   ' WORD* in/out
    patternCapacity As Integer,   ' INT
    ByRef status As Integer   ' UErrorCode* in/out
) As Integer
End Function

' uld : ULocaleData* in/out
' pattern : WORD* in/out
' patternCapacity : INT
' status : UErrorCode* in/out
Declare PtrSafe Function ulocdata_getLocaleDisplayPattern Lib "icuin" ( _
    ByRef uld As LongPtr, _
    ByRef pattern As Integer, _
    ByVal patternCapacity As Long, _
    ByRef status As Long) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

ulocdata_getLocaleDisplayPattern = ctypes.cdll.icuin.ulocdata_getLocaleDisplayPattern
ulocdata_getLocaleDisplayPattern.restype = ctypes.c_int
ulocdata_getLocaleDisplayPattern.argtypes = [
    ctypes.c_void_p,  # uld : ULocaleData* in/out
    ctypes.POINTER(ctypes.c_ushort),  # pattern : WORD* in/out
    ctypes.c_int,  # patternCapacity : INT
    ctypes.c_void_p,  # status : UErrorCode* in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('icuin.dll')
ulocdata_getLocaleDisplayPattern = Fiddle::Function.new(
  lib['ulocdata_getLocaleDisplayPattern'],
  [
    Fiddle::TYPE_VOIDP,  # uld : ULocaleData* in/out
    Fiddle::TYPE_VOIDP,  # pattern : WORD* in/out
    Fiddle::TYPE_INT,  # patternCapacity : INT
    Fiddle::TYPE_VOIDP,  # status : UErrorCode* in/out
  ],
  Fiddle::TYPE_INT, Fiddle::Function::CDECL)

#[link(name = "icuin")]
extern "C" {
    fn ulocdata_getLocaleDisplayPattern(
        uld: *mut isize,  // ULocaleData* in/out
        pattern: *mut u16,  // WORD* in/out
        patternCapacity: i32,  // INT
        status: *mut i32  // UErrorCode* in/out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("icuin.dll", CallingConvention = CallingConvention.Cdecl)]
public static extern int ulocdata_getLocaleDisplayPattern(ref IntPtr uld, ref ushort pattern, int patternCapacity, ref int status);
"@
$api = Add-Type -MemberDefinition $sig -Name 'icuin_ulocdata_getLocaleDisplayPattern' -Namespace Win32 -PassThru
# $api::ulocdata_getLocaleDisplayPattern(uld, pattern, patternCapacity, status)

#uselib "icuin.dll"
#func global ulocdata_getLocaleDisplayPattern "ulocdata_getLocaleDisplayPattern" sptr, sptr, sptr, sptr
; ulocdata_getLocaleDisplayPattern uld, varptr(pattern), patternCapacity, status   ; 戻り値は stat
; uld : ULocaleData* in/out -> "sptr"
; pattern : WORD* in/out -> "sptr"
; patternCapacity : INT -> "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 ulocdata_getLocaleDisplayPattern "ulocdata_getLocaleDisplayPattern" int, var, int, int
; res = ulocdata_getLocaleDisplayPattern(uld, pattern, patternCapacity, status)
; uld : ULocaleData* in/out -> "int"
; pattern : WORD* in/out -> "var"
; patternCapacity : INT -> "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。

; INT ulocdata_getLocaleDisplayPattern(ULocaleData* uld, WORD* pattern, INT patternCapacity, UErrorCode* status)
#uselib "icuin.dll"
#cfunc global ulocdata_getLocaleDisplayPattern "ulocdata_getLocaleDisplayPattern" int, var, int, int
; res = ulocdata_getLocaleDisplayPattern(uld, pattern, patternCapacity, status)
; uld : ULocaleData* in/out -> "int"
; pattern : WORD* in/out -> "var"
; patternCapacity : INT -> "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")
	proculocdata_getLocaleDisplayPattern = icuin.NewProc("ulocdata_getLocaleDisplayPattern")
)

// uld (ULocaleData* in/out), pattern (WORD* in/out), patternCapacity (INT), status (UErrorCode* in/out)
r1, _, err := proculocdata_getLocaleDisplayPattern.Call(
	uintptr(uld),
	uintptr(pattern),
	uintptr(patternCapacity),
	uintptr(status),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // INT

function ulocdata_getLocaleDisplayPattern(
  uld: Pointer;   // ULocaleData* in/out
  pattern: Pointer;   // WORD* in/out
  patternCapacity: Integer;   // INT
  status: Pointer   // UErrorCode* in/out
): Integer; cdecl;
  external 'icuin.dll' name 'ulocdata_getLocaleDisplayPattern';

result := DllCall("icuin\ulocdata_getLocaleDisplayPattern"
    , "Ptr", uld   ; ULocaleData* in/out
    , "Ptr", pattern   ; WORD* in/out
    , "Int", patternCapacity   ; INT
    , "Ptr", status   ; UErrorCode* in/out
    , "Cdecl Int")   ; return: INT

●ulocdata_getLocaleDisplayPattern(uld, pattern, patternCapacity, status) = DLL("icuin.dll", "int ulocdata_getLocaleDisplayPattern(void*, void*, int, void*)")
# 呼び出し: ulocdata_getLocaleDisplayPattern(uld, pattern, patternCapacity, status)
# uld : ULocaleData* in/out -> "void*"
# pattern : WORD* in/out -> "void*"
# patternCapacity : INT -> "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。