uiter_setString

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

void uiter_setString(
    UCharIterator* iter,
    const WORD* s,
    INT length
);

<DllImport("icuuc.dll", ExactSpelling:=True, CallingConvention:=CallingConvention.Cdecl)>
Public Shared Sub uiter_setString(
    iter As IntPtr,   ' UCharIterator* in/out
    ByRef s As UShort,   ' WORD*
    length As Integer   ' INT
)
End Sub

' iter : UCharIterator* in/out
' s : WORD*
' length : INT
Declare PtrSafe Sub uiter_setString Lib "icuuc" ( _
    ByVal iter As LongPtr, _
    ByRef s 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

uiter_setString = ctypes.cdll.icuuc.uiter_setString
uiter_setString.restype = None
uiter_setString.argtypes = [
    ctypes.c_void_p,  # iter : UCharIterator* in/out
    ctypes.POINTER(ctypes.c_ushort),  # s : WORD*
    ctypes.c_int,  # length : INT
]

require 'fiddle'
require 'fiddle/import'

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

#[link(name = "icuuc")]
extern "C" {
    fn uiter_setString(
        iter: *mut UCharIterator,  // UCharIterator* in/out
        s: *const u16,  // WORD*
        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_setString(IntPtr iter, ref ushort s, int length);
"@
$api = Add-Type -MemberDefinition $sig -Name 'icuuc_uiter_setString' -Namespace Win32 -PassThru
# $api::uiter_setString(iter, s, length)

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

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

// iter (UCharIterator* in/out), s (WORD*), length (INT)
r1, _, err := procuiter_setString.Call(
	uintptr(iter),
	uintptr(s),
	uintptr(length),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // void

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

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

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