uiter_setUTF16BE

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

void uiter_setUTF16BE(
    UCharIterator* iter,
    LPCSTR s,
    INT length
);

<DllImport("icuuc.dll", ExactSpelling:=True, CallingConvention:=CallingConvention.Cdecl)>
Public Shared Sub uiter_setUTF16BE(
    iter As IntPtr,   ' UCharIterator* in/out
    <MarshalAs(UnmanagedType.LPStr)> s As String,   ' LPCSTR
    length As Integer   ' INT
)
End Sub

' iter : UCharIterator* in/out
' s : LPCSTR
' length : INT
Declare PtrSafe Sub uiter_setUTF16BE Lib "icuuc" ( _
    ByVal iter As LongPtr, _
    ByVal s As String, _
    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

uiter_setUTF16BE = ctypes.cdll.icuuc.uiter_setUTF16BE
uiter_setUTF16BE.restype = None
uiter_setUTF16BE.argtypes = [
    ctypes.c_void_p,  # iter : UCharIterator* in/out
    wintypes.LPCSTR,  # s : LPCSTR
    ctypes.c_int,  # length : INT
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('icuuc.dll')
uiter_setUTF16BE = Fiddle::Function.new(
  lib['uiter_setUTF16BE'],
  [
    Fiddle::TYPE_VOIDP,  # iter : UCharIterator* in/out
    Fiddle::TYPE_VOIDP,  # s : LPCSTR
    Fiddle::TYPE_INT,  # length : INT
  ],
  Fiddle::TYPE_VOID, Fiddle::Function::CDECL)

#[link(name = "icuuc")]
extern "C" {
    fn uiter_setUTF16BE(
        iter: *mut UCharIterator,  // UCharIterator* in/out
        s: *const u8,  // LPCSTR
        length: i32  // INT
    );
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("icuuc.dll", CallingConvention = CallingConvention.Cdecl)]
public static extern void uiter_setUTF16BE(IntPtr iter, [MarshalAs(UnmanagedType.LPStr)] string s, int length);
"@
$api = Add-Type -MemberDefinition $sig -Name 'icuuc_uiter_setUTF16BE' -Namespace Win32 -PassThru
# $api::uiter_setUTF16BE(iter, s, length)

#uselib "icuuc.dll"
#func global uiter_setUTF16BE "uiter_setUTF16BE" sptr, sptr, sptr
; uiter_setUTF16BE varptr(iter), s, length
; iter : UCharIterator* in/out -> "sptr"
; s : LPCSTR -> "sptr"
; length : INT -> "sptr"

#uselib "icuuc.dll"
#func global uiter_setUTF16BE "uiter_setUTF16BE" var, str, int
; uiter_setUTF16BE iter, s, length
; iter : UCharIterator* in/out -> "var"
; s : LPCSTR -> "str"
; 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 uiter_setUTF16BE(UCharIterator* iter, LPCSTR s, INT length)
#uselib "icuuc.dll"
#func global uiter_setUTF16BE "uiter_setUTF16BE" var, str, int
; uiter_setUTF16BE iter, s, length
; iter : UCharIterator* in/out -> "var"
; s : LPCSTR -> "str"
; 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 (
	icuuc = windows.NewLazySystemDLL("icuuc.dll")
	procuiter_setUTF16BE = icuuc.NewProc("uiter_setUTF16BE")
)

// iter (UCharIterator* in/out), s (LPCSTR), length (INT)
r1, _, err := procuiter_setUTF16BE.Call(
	uintptr(iter),
	uintptr(unsafe.Pointer(windows.BytePtrFromString(s))),
	uintptr(length),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // void

procedure uiter_setUTF16BE(
  iter: Pointer;   // UCharIterator* in/out
  s: PAnsiChar;   // LPCSTR
  length: Integer   // INT
); cdecl;
  external 'icuuc.dll' name 'uiter_setUTF16BE';

result := DllCall("icuuc\uiter_setUTF16BE"
    , "Ptr", iter   ; UCharIterator* in/out
    , "AStr", s   ; LPCSTR
    , "Int", length   ; INT
    , "Cdecl Int")   ; return: void

●uiter_setUTF16BE(iter, s, length) = DLL("icuuc.dll", "int uiter_setUTF16BE(void*, char*, int)")
# 呼び出し: uiter_setUTF16BE(iter, s, length)
# iter : UCharIterator* in/out -> "void*"
# s : LPCSTR -> "char*"
# 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。