udatpg_setAppendItemFormat

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

void udatpg_setAppendItemFormat(
    void** dtpg,
    UDateTimePatternField field,
    const WORD* value,
    INT length
);

<DllImport("icuin.dll", ExactSpelling:=True, CallingConvention:=CallingConvention.Cdecl)>
Public Shared Sub udatpg_setAppendItemFormat(
    dtpg As IntPtr,   ' void** in/out
    field As Integer,   ' UDateTimePatternField
    ByRef value As UShort,   ' WORD*
    length As Integer   ' INT
)
End Sub

' dtpg : void** in/out
' field : UDateTimePatternField
' value : WORD*
' length : INT
Declare PtrSafe Sub udatpg_setAppendItemFormat Lib "icuin" ( _
    ByVal dtpg As LongPtr, _
    ByVal field As Long, _
    ByRef value As Integer, _
    ByVal length As Long)
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

udatpg_setAppendItemFormat = ctypes.cdll.icuin.udatpg_setAppendItemFormat
udatpg_setAppendItemFormat.restype = None
udatpg_setAppendItemFormat.argtypes = [
    ctypes.c_void_p,  # dtpg : void** in/out
    ctypes.c_int,  # field : UDateTimePatternField
    ctypes.POINTER(ctypes.c_ushort),  # value : WORD*
    ctypes.c_int,  # length : INT
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('icuin.dll')
udatpg_setAppendItemFormat = Fiddle::Function.new(
  lib['udatpg_setAppendItemFormat'],
  [
    Fiddle::TYPE_VOIDP,  # dtpg : void** in/out
    Fiddle::TYPE_INT,  # field : UDateTimePatternField
    Fiddle::TYPE_VOIDP,  # value : WORD*
    Fiddle::TYPE_INT,  # length : INT
  ],
  Fiddle::TYPE_VOID, Fiddle::Function::CDECL)

#[link(name = "icuin")]
extern "C" {
    fn udatpg_setAppendItemFormat(
        dtpg: *mut *mut (),  // void** in/out
        field: i32,  // UDateTimePatternField
        value: *const u16,  // WORD*
        length: i32  // INT
    );
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("icuin.dll", CallingConvention = CallingConvention.Cdecl)]
public static extern void udatpg_setAppendItemFormat(IntPtr dtpg, int field, ref ushort value, int length);
"@
$api = Add-Type -MemberDefinition $sig -Name 'icuin_udatpg_setAppendItemFormat' -Namespace Win32 -PassThru
# $api::udatpg_setAppendItemFormat(dtpg, field, value, length)

#uselib "icuin.dll"
#func global udatpg_setAppendItemFormat "udatpg_setAppendItemFormat" sptr, sptr, sptr, sptr
; udatpg_setAppendItemFormat dtpg, field, varptr(value), length
; dtpg : void** in/out -> "sptr"
; field : UDateTimePatternField -> "sptr"
; value : WORD* -> "sptr"
; length : INT -> "sptr"

#uselib "icuin.dll"
#func global udatpg_setAppendItemFormat "udatpg_setAppendItemFormat" sptr, int, var, int
; udatpg_setAppendItemFormat dtpg, field, value, length
; dtpg : void** in/out -> "sptr"
; field : UDateTimePatternField -> "int"
; value : WORD* -> "var"
; length : INT -> "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 udatpg_setAppendItemFormat(void** dtpg, UDateTimePatternField field, WORD* value, INT length)
#uselib "icuin.dll"
#func global udatpg_setAppendItemFormat "udatpg_setAppendItemFormat" intptr, int, var, int
; udatpg_setAppendItemFormat dtpg, field, value, length
; dtpg : void** in/out -> "intptr"
; field : UDateTimePatternField -> "int"
; value : WORD* -> "var"
; length : INT -> "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")
	procudatpg_setAppendItemFormat = icuin.NewProc("udatpg_setAppendItemFormat")
)

// dtpg (void** in/out), field (UDateTimePatternField), value (WORD*), length (INT)
r1, _, err := procudatpg_setAppendItemFormat.Call(
	uintptr(dtpg),
	uintptr(field),
	uintptr(value),
	uintptr(length),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // void

procedure udatpg_setAppendItemFormat(
  dtpg: Pointer;   // void** in/out
  field: Integer;   // UDateTimePatternField
  value: Pointer;   // WORD*
  length: Integer   // INT
); cdecl;
  external 'icuin.dll' name 'udatpg_setAppendItemFormat';

result := DllCall("icuin\udatpg_setAppendItemFormat"
    , "Ptr", dtpg   ; void** in/out
    , "Int", field   ; UDateTimePatternField
    , "Ptr", value   ; WORD*
    , "Int", length   ; INT
    , "Cdecl Int")   ; return: void

●udatpg_setAppendItemFormat(dtpg, field, value, length) = DLL("icuin.dll", "int udatpg_setAppendItemFormat(void*, int, void*, int)")
# 呼び出し: udatpg_setAppendItemFormat(dtpg, field, value, length)
# dtpg : void** in/out -> "void*"
# field : UDateTimePatternField -> "int"
# value : WORD* -> "void*"
# length : INT -> "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。