utext_openUTF8

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

UText* utext_openUTF8(
    UText* ut,
    LPCSTR s,
    LONGLONG length,
    UErrorCode* status
);

<DllImport("icuuc.dll", ExactSpelling:=True, CallingConvention:=CallingConvention.Cdecl)>
Public Shared Function utext_openUTF8(
    ut As IntPtr,   ' UText* in/out
    <MarshalAs(UnmanagedType.LPStr)> s As String,   ' LPCSTR
    length As Long,   ' LONGLONG
    ByRef status As Integer   ' UErrorCode* in/out
) As IntPtr
End Function

' ut : UText* in/out
' s : LPCSTR
' length : LONGLONG
' status : UErrorCode* in/out
Declare PtrSafe Function utext_openUTF8 Lib "icuuc" ( _
    ByVal ut As LongPtr, _
    ByVal s As String, _
    ByVal length As LongLong, _
    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

utext_openUTF8 = ctypes.cdll.icuuc.utext_openUTF8
utext_openUTF8.restype = ctypes.c_void_p
utext_openUTF8.argtypes = [
    ctypes.c_void_p,  # ut : UText* in/out
    wintypes.LPCSTR,  # s : LPCSTR
    ctypes.c_longlong,  # length : LONGLONG
    ctypes.c_void_p,  # status : UErrorCode* in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('icuuc.dll')
utext_openUTF8 = Fiddle::Function.new(
  lib['utext_openUTF8'],
  [
    Fiddle::TYPE_VOIDP,  # ut : UText* in/out
    Fiddle::TYPE_VOIDP,  # s : LPCSTR
    Fiddle::TYPE_LONG_LONG,  # length : LONGLONG
    Fiddle::TYPE_VOIDP,  # status : UErrorCode* in/out
  ],
  Fiddle::TYPE_VOIDP, Fiddle::Function::CDECL)

#[link(name = "icuuc")]
extern "C" {
    fn utext_openUTF8(
        ut: *mut UText,  // UText* in/out
        s: *const u8,  // LPCSTR
        length: i64,  // LONGLONG
        status: *mut i32  // UErrorCode* in/out
    ) -> *mut UText;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("icuuc.dll", CallingConvention = CallingConvention.Cdecl)]
public static extern IntPtr utext_openUTF8(IntPtr ut, [MarshalAs(UnmanagedType.LPStr)] string s, long length, ref int status);
"@
$api = Add-Type -MemberDefinition $sig -Name 'icuuc_utext_openUTF8' -Namespace Win32 -PassThru
# $api::utext_openUTF8(ut, s, length, status)

#uselib "icuuc.dll"
#func global utext_openUTF8 "utext_openUTF8" sptr, sptr, sptr, sptr
; utext_openUTF8 varptr(ut), s, length, status   ; 戻り値は stat
; ut : UText* in/out -> "sptr"
; s : LPCSTR -> "sptr"
; length : LONGLONG -> "sptr"
; status : UErrorCode* in/out -> "sptr"
; ※HSP3.7は int64 引数(64bit値渡し)に非対応です。
; ※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 "icuuc.dll"
#cfunc global utext_openUTF8 "utext_openUTF8" var, str, int64, int
; res = utext_openUTF8(ut, s, length, status)
; ut : UText* in/out -> "var"
; s : LPCSTR -> "str"
; length : LONGLONG -> "int64"
; 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。
; ※int64 引数の DLL 値渡しは x64 ランタイム(hsp3_64)のみ対応(x86 は未対応)。

; UText* utext_openUTF8(UText* ut, LPCSTR s, LONGLONG length, UErrorCode* status)
#uselib "icuuc.dll"
#cfunc global utext_openUTF8 "utext_openUTF8" var, str, int64, int
; res = utext_openUTF8(ut, s, length, status)
; ut : UText* in/out -> "var"
; s : LPCSTR -> "str"
; length : LONGLONG -> "int64"
; 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 (
	icuuc = windows.NewLazySystemDLL("icuuc.dll")
	procutext_openUTF8 = icuuc.NewProc("utext_openUTF8")
)

// ut (UText* in/out), s (LPCSTR), length (LONGLONG), status (UErrorCode* in/out)
r1, _, err := procutext_openUTF8.Call(
	uintptr(ut),
	uintptr(unsafe.Pointer(windows.BytePtrFromString(s))),
	uintptr(length),
	uintptr(status),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // UText*

function utext_openUTF8(
  ut: Pointer;   // UText* in/out
  s: PAnsiChar;   // LPCSTR
  length: Int64;   // LONGLONG
  status: Pointer   // UErrorCode* in/out
): Pointer; cdecl;
  external 'icuuc.dll' name 'utext_openUTF8';

result := DllCall("icuuc\utext_openUTF8"
    , "Ptr", ut   ; UText* in/out
    , "AStr", s   ; LPCSTR
    , "Int64", length   ; LONGLONG
    , "Ptr", status   ; UErrorCode* in/out
    , "Cdecl Ptr")   ; return: UText*

●utext_openUTF8(ut, s, length, status) = DLL("icuuc.dll", "void* utext_openUTF8(void*, char*, int64, void*)")
# 呼び出し: utext_openUTF8(ut, s, length, status)
# ut : UText* in/out -> "void*"
# s : LPCSTR -> "char*"
# length : LONGLONG -> "int64"
# 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。