ucol_openAvailableLocales

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

UEnumeration* ucol_openAvailableLocales(
    UErrorCode* status
);

<DllImport("icuin.dll", ExactSpelling:=True, CallingConvention:=CallingConvention.Cdecl)>
Public Shared Function ucol_openAvailableLocales(
    ByRef status As Integer   ' UErrorCode* in/out
) As IntPtr
End Function

' status : UErrorCode* in/out
Declare PtrSafe Function ucol_openAvailableLocales Lib "icuin" ( _
    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

ucol_openAvailableLocales = ctypes.cdll.icuin.ucol_openAvailableLocales
ucol_openAvailableLocales.restype = ctypes.c_void_p
ucol_openAvailableLocales.argtypes = [
    ctypes.c_void_p,  # status : UErrorCode* in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('icuin.dll')
ucol_openAvailableLocales = Fiddle::Function.new(
  lib['ucol_openAvailableLocales'],
  [
    Fiddle::TYPE_VOIDP,  # status : UErrorCode* in/out
  ],
  Fiddle::TYPE_VOIDP, Fiddle::Function::CDECL)

#[link(name = "icuin")]
extern "C" {
    fn ucol_openAvailableLocales(
        status: *mut i32  // UErrorCode* in/out
    ) -> *mut isize;
}
// crates: windows-sys provides ready-made bindings for this API.

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

#uselib "icuin.dll"
#func global ucol_openAvailableLocales "ucol_openAvailableLocales" sptr
; ucol_openAvailableLocales status   ; 戻り値は stat
; 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 ucol_openAvailableLocales "ucol_openAvailableLocales" int
; res = ucol_openAvailableLocales(status)
; status : UErrorCode* in/out -> "int"

; UEnumeration* ucol_openAvailableLocales(UErrorCode* status)
#uselib "icuin.dll"
#cfunc global ucol_openAvailableLocales "ucol_openAvailableLocales" int
; res = ucol_openAvailableLocales(status)
; status : UErrorCode* in/out -> "int"

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

var (
	icuin = windows.NewLazySystemDLL("icuin.dll")
	procucol_openAvailableLocales = icuin.NewProc("ucol_openAvailableLocales")
)

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

function ucol_openAvailableLocales(
  status: Pointer   // UErrorCode* in/out
): Pointer; cdecl;
  external 'icuin.dll' name 'ucol_openAvailableLocales';

result := DllCall("icuin\ucol_openAvailableLocales"
    , "Ptr", status   ; UErrorCode* in/out
    , "Cdecl Ptr")   ; return: UEnumeration*

●ucol_openAvailableLocales(status) = DLL("icuin.dll", "void* ucol_openAvailableLocales(void*)")
# 呼び出し: ucol_openAvailableLocales(status)
# 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。