ucal_clearField

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

void ucal_clearField(
    void** cal,
    UCalendarDateFields field
);

<DllImport("icuin.dll", ExactSpelling:=True, CallingConvention:=CallingConvention.Cdecl)>
Public Shared Sub ucal_clearField(
    cal As IntPtr,   ' void** in/out
    field As Integer   ' UCalendarDateFields
)
End Sub

' cal : void** in/out
' field : UCalendarDateFields
Declare PtrSafe Sub ucal_clearField Lib "icuin" ( _
    ByVal cal As LongPtr, _
    ByVal field As Long)
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

ucal_clearField = ctypes.cdll.icuin.ucal_clearField
ucal_clearField.restype = None
ucal_clearField.argtypes = [
    ctypes.c_void_p,  # cal : void** in/out
    ctypes.c_int,  # field : UCalendarDateFields
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('icuin.dll')
ucal_clearField = Fiddle::Function.new(
  lib['ucal_clearField'],
  [
    Fiddle::TYPE_VOIDP,  # cal : void** in/out
    Fiddle::TYPE_INT,  # field : UCalendarDateFields
  ],
  Fiddle::TYPE_VOID, Fiddle::Function::CDECL)

#[link(name = "icuin")]
extern "C" {
    fn ucal_clearField(
        cal: *mut *mut (),  // void** in/out
        field: i32  // UCalendarDateFields
    );
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("icuin.dll", CallingConvention = CallingConvention.Cdecl)]
public static extern void ucal_clearField(IntPtr cal, int field);
"@
$api = Add-Type -MemberDefinition $sig -Name 'icuin_ucal_clearField' -Namespace Win32 -PassThru
# $api::ucal_clearField(cal, field)

#uselib "icuin.dll"
#func global ucal_clearField "ucal_clearField" sptr, sptr
; ucal_clearField cal, field
; cal : void** in/out -> "sptr"
; field : UCalendarDateFields -> "sptr"

#uselib "icuin.dll"
#func global ucal_clearField "ucal_clearField" sptr, int
; ucal_clearField cal, field
; cal : void** in/out -> "sptr"
; field : UCalendarDateFields -> "int"

; void ucal_clearField(void** cal, UCalendarDateFields field)
#uselib "icuin.dll"
#func global ucal_clearField "ucal_clearField" intptr, int
; ucal_clearField cal, field
; cal : void** in/out -> "intptr"
; field : UCalendarDateFields -> "int"

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

var (
	icuin = windows.NewLazySystemDLL("icuin.dll")
	procucal_clearField = icuin.NewProc("ucal_clearField")
)

// cal (void** in/out), field (UCalendarDateFields)
r1, _, err := procucal_clearField.Call(
	uintptr(cal),
	uintptr(field),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // void

procedure ucal_clearField(
  cal: Pointer;   // void** in/out
  field: Integer   // UCalendarDateFields
); cdecl;
  external 'icuin.dll' name 'ucal_clearField';

result := DllCall("icuin\ucal_clearField"
    , "Ptr", cal   ; void** in/out
    , "Int", field   ; UCalendarDateFields
    , "Cdecl Int")   ; return: void

●ucal_clearField(cal, field) = DLL("icuin.dll", "int ucal_clearField(void*, int)")
# 呼び出し: ucal_clearField(cal, field)
# cal : void** in/out -> "void*"
# field : UCalendarDateFields -> "int"
# 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。

const std = @import("std");

extern "icuin" fn ucal_clearField(
    cal: ?*anyopaque, // void** in/out
    field: i32 // UCalendarDateFields
) callconv(.c) void;

proc ucal_clearField(
    cal: pointer,  # void** in/out
    field: int32  # UCalendarDateFields
) {.importc: "ucal_clearField", cdecl, dynlib: "icuin.dll".}

pragma(lib, "icuin");
extern(C)
void ucal_clearField(
    void** cal,   // void** in/out
    int field   // UCalendarDateFields
);

ccall((:ucal_clearField, "icuin.dll"), Cvoid,
      (Ptr{Cvoid}, Int32),
      cal, field)
# cal : void** in/out -> Ptr{Cvoid}
# field : UCalendarDateFields -> Int32

local ffi = require("ffi")
ffi.cdef[[
void ucal_clearField(
    void** cal,
    int32_t field);
]]
local icuin = ffi.load("icuin")
-- icuin.ucal_clearField(cal, field)
-- cal : void** in/out
-- field : UCalendarDateFields
-- 構造体/GUIDへのポインタは cdef が通るよう void* で表記(実型は各引数コメント参照)。値渡し構造体・enum は対応する typedef を cdef に追加すること。

const koffi = require('koffi');
const lib = koffi.load('icuin.dll');
const ucal_clearField = lib.func('__cdecl', 'ucal_clearField', 'void', ['void *', 'int32_t']);
// ucal_clearField(cal, field)
// cal : void** in/out -> 'void *'
// field : UCalendarDateFields -> 'int32_t'
// 出力ポインタは koffi.out(...) で包む。構造体は koffi.struct で定義。

const lib = Deno.dlopen("icuin.dll", {
  ucal_clearField: { parameters: ["pointer", "i32"], result: "void" },
});
// lib.symbols.ucal_clearField(cal, field)
// cal : void** in/out -> "pointer"
// field : UCalendarDateFields -> "i32"
// 文字列引数は "buffer"(NUL 終端のバイト列を Uint8Array で渡す)。
// 値渡し構造体は { struct: [ ...field types... ] } を使用。

<?php
$ffi = FFI::cdef(<<<C
void ucal_clearField(
    void** cal,
    int32_t field);
C, "icuin.dll");
// $ffi->ucal_clearField(cal, field);
// cal : void** in/out
// field : UCalendarDateFields
// 構造体/GUIDへのポインタは cdef が通るよう void* で表記(実型は各引数コメント参照)。値渡し構造体・enum は対応する typedef を cdef に追加すること。

import com.sun.jna.*;
import com.sun.jna.ptr.*;
import com.sun.jna.win32.StdCallLibrary;
import com.sun.jna.win32.W32APIOptions;

public interface Icuin extends Library {
    Icuin INSTANCE = Native.load("icuin", Icuin.class);
    void ucal_clearField(
        Pointer cal,   // void** in/out
        int field   // UCalendarDateFields
    );
}

@[Link("icuin")]
lib Libicuin
  fun ucal_clearField = ucal_clearField(
    cal : Void**,   # void** in/out
    field : Int32   # UCalendarDateFields
  ) : Void
end
# 構造体/GUID/enum は lib 内に対応する型定義が必要。

import 'dart:ffi';
import 'package:ffi/ffi.dart';

typedef ucal_clearFieldNative = Void Function(Pointer<Void>, Int32);
typedef ucal_clearFieldDart = void Function(Pointer<Void>, int);
final ucal_clearField = DynamicLibrary.open('icuin.dll')
    .lookupFunction<ucal_clearFieldNative, ucal_clearFieldDart>('ucal_clearField');
// cal : void** in/out -> Pointer<Void>
// field : UCalendarDateFields -> Int32
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
procedure ucal_clearField(
  cal: Pointer;   // void** in/out
  field: Integer   // UCalendarDateFields
); cdecl;
  external 'icuin.dll' name 'ucal_clearField';

import Foreign
import Foreign.C.Types
import Foreign.C.String

foreign import ccall safe "ucal_clearField"
  c_ucal_clearField :: Ptr () -> Int32 -> IO ()
-- cal : void** in/out -> Ptr ()
-- field : UCalendarDateFields -> Int32
-- 要 GHC(Windows)。stdcall は x64 では ccall として扱われる。ブロックする API は safe 呼び出し推奨。

open Ctypes
open Foreign

let ucal_clearfield =
  foreign "ucal_clearField"
    ((ptr void) @-> int32_t @-> returning void)
(* cal : void** in/out -> (ptr void) *)
(* field : UCalendarDateFields -> int32_t *)
(* foreign は cdecl 前提。x64 Windows では WINAPI と一致。構造体は ctypes structure を定義のこと。 *)

(cffi:define-foreign-library icuin (t "icuin.dll"))
(cffi:use-foreign-library icuin)

(cffi:defcfun ("ucal_clearField" ucal-clear-field :convention :cdecl) :void
  (cal :pointer)   ; void** in/out
  (field :int32))   ; UCalendarDateFields
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $ucal_clearField = Win32::API::More->new('icuin',
    'void ucal_clearField(LPVOID cal, int field)');
# my $ret = $ucal_clearField->Call($cal, $field);
# cal : void** in/out -> LPVOID
# field : UCalendarDateFields -> int
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。