u_strCompareIter

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

INT u_strCompareIter(
    UCharIterator* iter1,
    UCharIterator* iter2,
    CHAR codePointOrder
);

<DllImport("icuuc.dll", ExactSpelling:=True, CallingConvention:=CallingConvention.Cdecl)>
Public Shared Function u_strCompareIter(
    iter1 As IntPtr,   ' UCharIterator* in/out
    iter2 As IntPtr,   ' UCharIterator* in/out
    codePointOrder As SByte   ' CHAR
) As Integer
End Function

' iter1 : UCharIterator* in/out
' iter2 : UCharIterator* in/out
' codePointOrder : CHAR
Declare PtrSafe Function u_strCompareIter Lib "icuuc" ( _
    ByVal iter1 As LongPtr, _
    ByVal iter2 As LongPtr, _
    ByVal codePointOrder As Byte) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

u_strCompareIter = ctypes.cdll.icuuc.u_strCompareIter
u_strCompareIter.restype = ctypes.c_int
u_strCompareIter.argtypes = [
    ctypes.c_void_p,  # iter1 : UCharIterator* in/out
    ctypes.c_void_p,  # iter2 : UCharIterator* in/out
    ctypes.c_byte,  # codePointOrder : CHAR
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('icuuc.dll')
u_strCompareIter = Fiddle::Function.new(
  lib['u_strCompareIter'],
  [
    Fiddle::TYPE_VOIDP,  # iter1 : UCharIterator* in/out
    Fiddle::TYPE_VOIDP,  # iter2 : UCharIterator* in/out
    Fiddle::TYPE_CHAR,  # codePointOrder : CHAR
  ],
  Fiddle::TYPE_INT, Fiddle::Function::CDECL)

#[link(name = "icuuc")]
extern "C" {
    fn u_strCompareIter(
        iter1: *mut UCharIterator,  // UCharIterator* in/out
        iter2: *mut UCharIterator,  // UCharIterator* in/out
        codePointOrder: i8  // CHAR
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("icuuc.dll", CallingConvention = CallingConvention.Cdecl)]
public static extern int u_strCompareIter(IntPtr iter1, IntPtr iter2, sbyte codePointOrder);
"@
$api = Add-Type -MemberDefinition $sig -Name 'icuuc_u_strCompareIter' -Namespace Win32 -PassThru
# $api::u_strCompareIter(iter1, iter2, codePointOrder)

#uselib "icuuc.dll"
#func global u_strCompareIter "u_strCompareIter" sptr, sptr, sptr
; u_strCompareIter varptr(iter1), varptr(iter2), codePointOrder   ; 戻り値は stat
; iter1 : UCharIterator* in/out -> "sptr"
; iter2 : UCharIterator* in/out -> "sptr"
; codePointOrder : CHAR -> "sptr"
; ※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 u_strCompareIter "u_strCompareIter" var, var, int
; res = u_strCompareIter(iter1, iter2, codePointOrder)
; iter1 : UCharIterator* in/out -> "var"
; iter2 : UCharIterator* in/out -> "var"
; codePointOrder : CHAR -> "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。

; INT u_strCompareIter(UCharIterator* iter1, UCharIterator* iter2, CHAR codePointOrder)
#uselib "icuuc.dll"
#cfunc global u_strCompareIter "u_strCompareIter" var, var, int
; res = u_strCompareIter(iter1, iter2, codePointOrder)
; iter1 : UCharIterator* in/out -> "var"
; iter2 : UCharIterator* in/out -> "var"
; codePointOrder : CHAR -> "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")
	procu_strCompareIter = icuuc.NewProc("u_strCompareIter")
)

// iter1 (UCharIterator* in/out), iter2 (UCharIterator* in/out), codePointOrder (CHAR)
r1, _, err := procu_strCompareIter.Call(
	uintptr(iter1),
	uintptr(iter2),
	uintptr(codePointOrder),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // INT

function u_strCompareIter(
  iter1: Pointer;   // UCharIterator* in/out
  iter2: Pointer;   // UCharIterator* in/out
  codePointOrder: Shortint   // CHAR
): Integer; cdecl;
  external 'icuuc.dll' name 'u_strCompareIter';

result := DllCall("icuuc\u_strCompareIter"
    , "Ptr", iter1   ; UCharIterator* in/out
    , "Ptr", iter2   ; UCharIterator* in/out
    , "Char", codePointOrder   ; CHAR
    , "Cdecl Int")   ; return: INT

●u_strCompareIter(iter1, iter2, codePointOrder) = DLL("icuuc.dll", "int u_strCompareIter(void*, void*, char)")
# 呼び出し: u_strCompareIter(iter1, iter2, codePointOrder)
# iter1 : UCharIterator* in/out -> "void*"
# iter2 : UCharIterator* in/out -> "void*"
# codePointOrder : CHAR -> "char"
# 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。