udtitvfmt_formatToResult

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

void udtitvfmt_formatToResult(
    const UDateIntervalFormat* formatter,
    DOUBLE fromDate,
    DOUBLE toDate,
    UFormattedDateInterval* result,
    UErrorCode* status
);

<DllImport("icu.dll", ExactSpelling:=True, CallingConvention:=CallingConvention.Cdecl)>
Public Shared Sub udtitvfmt_formatToResult(
    ByRef formatter As IntPtr,   ' UDateIntervalFormat*
    fromDate As Double,   ' DOUBLE
    toDate As Double,   ' DOUBLE
    ByRef result As IntPtr,   ' UFormattedDateInterval* in/out
    ByRef status As Integer   ' UErrorCode* in/out
)
End Sub

' formatter : UDateIntervalFormat*
' fromDate : DOUBLE
' toDate : DOUBLE
' result : UFormattedDateInterval* in/out
' status : UErrorCode* in/out
Declare PtrSafe Sub udtitvfmt_formatToResult Lib "icu" ( _
    ByRef formatter As LongPtr, _
    ByVal fromDate As Double, _
    ByVal toDate As Double, _
    ByRef result As LongPtr, _
    ByRef status As Long)
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

udtitvfmt_formatToResult = ctypes.cdll.icu.udtitvfmt_formatToResult
udtitvfmt_formatToResult.restype = None
udtitvfmt_formatToResult.argtypes = [
    ctypes.c_void_p,  # formatter : UDateIntervalFormat*
    ctypes.c_double,  # fromDate : DOUBLE
    ctypes.c_double,  # toDate : DOUBLE
    ctypes.c_void_p,  # result : UFormattedDateInterval* in/out
    ctypes.c_void_p,  # status : UErrorCode* in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('icu.dll')
udtitvfmt_formatToResult = Fiddle::Function.new(
  lib['udtitvfmt_formatToResult'],
  [
    Fiddle::TYPE_VOIDP,  # formatter : UDateIntervalFormat*
    Fiddle::TYPE_DOUBLE,  # fromDate : DOUBLE
    Fiddle::TYPE_DOUBLE,  # toDate : DOUBLE
    Fiddle::TYPE_VOIDP,  # result : UFormattedDateInterval* in/out
    Fiddle::TYPE_VOIDP,  # status : UErrorCode* in/out
  ],
  Fiddle::TYPE_VOID, Fiddle::Function::CDECL)

#[link(name = "icu")]
extern "C" {
    fn udtitvfmt_formatToResult(
        formatter: *const isize,  // UDateIntervalFormat*
        fromDate: f64,  // DOUBLE
        toDate: f64,  // DOUBLE
        result: *mut isize,  // UFormattedDateInterval* in/out
        status: *mut i32  // UErrorCode* in/out
    );
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("icu.dll", CallingConvention = CallingConvention.Cdecl)]
public static extern void udtitvfmt_formatToResult(ref IntPtr formatter, double fromDate, double toDate, ref IntPtr result, ref int status);
"@
$api = Add-Type -MemberDefinition $sig -Name 'icu_udtitvfmt_formatToResult' -Namespace Win32 -PassThru
# $api::udtitvfmt_formatToResult(formatter, fromDate, toDate, result, status)

#uselib "icu.dll"
#func global udtitvfmt_formatToResult "udtitvfmt_formatToResult" sptr, double, double, sptr, sptr
; udtitvfmt_formatToResult formatter, fromDate, toDate, result, status
; formatter : UDateIntervalFormat* -> "sptr"
; fromDate : DOUBLE -> "double"
; toDate : DOUBLE -> "double"
; result : UFormattedDateInterval* in/out -> "sptr"
; status : UErrorCode* in/out -> "sptr"

#uselib "icu.dll"
#func global udtitvfmt_formatToResult "udtitvfmt_formatToResult" int, double, double, int, int
; udtitvfmt_formatToResult formatter, fromDate, toDate, result, status
; formatter : UDateIntervalFormat* -> "int"
; fromDate : DOUBLE -> "double"
; toDate : DOUBLE -> "double"
; result : UFormattedDateInterval* in/out -> "int"
; status : UErrorCode* in/out -> "int"

; void udtitvfmt_formatToResult(UDateIntervalFormat* formatter, DOUBLE fromDate, DOUBLE toDate, UFormattedDateInterval* result, UErrorCode* status)
#uselib "icu.dll"
#func global udtitvfmt_formatToResult "udtitvfmt_formatToResult" int, double, double, int, int
; udtitvfmt_formatToResult formatter, fromDate, toDate, result, status
; formatter : UDateIntervalFormat* -> "int"
; fromDate : DOUBLE -> "double"
; toDate : DOUBLE -> "double"
; result : UFormattedDateInterval* in/out -> "int"
; status : UErrorCode* in/out -> "int"

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

var (
	icu = windows.NewLazySystemDLL("icu.dll")
	procudtitvfmt_formatToResult = icu.NewProc("udtitvfmt_formatToResult")
)

// formatter (UDateIntervalFormat*), fromDate (DOUBLE), toDate (DOUBLE), result (UFormattedDateInterval* in/out), status (UErrorCode* in/out)
r1, _, err := procudtitvfmt_formatToResult.Call(
	uintptr(formatter),
	uintptr(math.Float64bits(fromDate)),
	uintptr(math.Float64bits(toDate)),
	uintptr(result),
	uintptr(status),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // void
// 注意: float/double 引数は proc.Call では XMM レジスタに渡せません。
// windows.SyscallN(proc.Addr(), math.Float64bits(x), ...) もしくは cgo を使用してください。

procedure udtitvfmt_formatToResult(
  formatter: Pointer;   // UDateIntervalFormat*
  fromDate: Double;   // DOUBLE
  toDate: Double;   // DOUBLE
  result: Pointer;   // UFormattedDateInterval* in/out
  status: Pointer   // UErrorCode* in/out
); cdecl;
  external 'icu.dll' name 'udtitvfmt_formatToResult';

result := DllCall("icu\udtitvfmt_formatToResult"
    , "Ptr", formatter   ; UDateIntervalFormat*
    , "Double", fromDate   ; DOUBLE
    , "Double", toDate   ; DOUBLE
    , "Ptr", result   ; UFormattedDateInterval* in/out
    , "Ptr", status   ; UErrorCode* in/out
    , "Cdecl Int")   ; return: void

●udtitvfmt_formatToResult(formatter, fromDate, toDate, result, status) = DLL("icu.dll", "int udtitvfmt_formatToResult(void*, double, double, void*, void*)")
# 呼び出し: udtitvfmt_formatToResult(formatter, fromDate, toDate, result, status)
# formatter : UDateIntervalFormat* -> "void*"
# fromDate : DOUBLE -> "double"
# toDate : DOUBLE -> "double"
# result : UFormattedDateInterval* in/out -> "void*"
# 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。