ubidi_getLevels

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

BYTE* ubidi_getLevels(
    UBiDi* pBiDi,
    UErrorCode* pErrorCode
);

<DllImport("icuuc.dll", ExactSpelling:=True, CallingConvention:=CallingConvention.Cdecl)>
Public Shared Function ubidi_getLevels(
    ByRef pBiDi As IntPtr,   ' UBiDi* in/out
    ByRef pErrorCode As Integer   ' UErrorCode* in/out
) As IntPtr
End Function

' pBiDi : UBiDi* in/out
' pErrorCode : UErrorCode* in/out
Declare PtrSafe Function ubidi_getLevels Lib "icuuc" ( _
    ByRef pBiDi As LongPtr, _
    ByRef pErrorCode 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

ubidi_getLevels = ctypes.cdll.icuuc.ubidi_getLevels
ubidi_getLevels.restype = ctypes.c_void_p
ubidi_getLevels.argtypes = [
    ctypes.c_void_p,  # pBiDi : UBiDi* in/out
    ctypes.c_void_p,  # pErrorCode : UErrorCode* in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('icuuc.dll')
ubidi_getLevels = Fiddle::Function.new(
  lib['ubidi_getLevels'],
  [
    Fiddle::TYPE_VOIDP,  # pBiDi : UBiDi* in/out
    Fiddle::TYPE_VOIDP,  # pErrorCode : UErrorCode* in/out
  ],
  Fiddle::TYPE_VOIDP, Fiddle::Function::CDECL)

#[link(name = "icuuc")]
extern "C" {
    fn ubidi_getLevels(
        pBiDi: *mut isize,  // UBiDi* in/out
        pErrorCode: *mut i32  // UErrorCode* in/out
    ) -> *mut u8;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("icuuc.dll", CallingConvention = CallingConvention.Cdecl)]
public static extern IntPtr ubidi_getLevels(ref IntPtr pBiDi, ref int pErrorCode);
"@
$api = Add-Type -MemberDefinition $sig -Name 'icuuc_ubidi_getLevels' -Namespace Win32 -PassThru
# $api::ubidi_getLevels(pBiDi, pErrorCode)

#uselib "icuuc.dll"
#func global ubidi_getLevels "ubidi_getLevels" sptr, sptr
; ubidi_getLevels pBiDi, pErrorCode   ; 戻り値は stat
; pBiDi : UBiDi* in/out -> "sptr"
; pErrorCode : UErrorCode* in/out -> "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 ubidi_getLevels "ubidi_getLevels" int, int
; res = ubidi_getLevels(pBiDi, pErrorCode)
; pBiDi : UBiDi* in/out -> "int"
; pErrorCode : UErrorCode* in/out -> "int"

; BYTE* ubidi_getLevels(UBiDi* pBiDi, UErrorCode* pErrorCode)
#uselib "icuuc.dll"
#cfunc global ubidi_getLevels "ubidi_getLevels" int, int
; res = ubidi_getLevels(pBiDi, pErrorCode)
; pBiDi : UBiDi* in/out -> "int"
; pErrorCode : UErrorCode* in/out -> "int"

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

var (
	icuuc = windows.NewLazySystemDLL("icuuc.dll")
	procubidi_getLevels = icuuc.NewProc("ubidi_getLevels")
)

// pBiDi (UBiDi* in/out), pErrorCode (UErrorCode* in/out)
r1, _, err := procubidi_getLevels.Call(
	uintptr(pBiDi),
	uintptr(pErrorCode),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BYTE*

function ubidi_getLevels(
  pBiDi: Pointer;   // UBiDi* in/out
  pErrorCode: Pointer   // UErrorCode* in/out
): Pointer; cdecl;
  external 'icuuc.dll' name 'ubidi_getLevels';

result := DllCall("icuuc\ubidi_getLevels"
    , "Ptr", pBiDi   ; UBiDi* in/out
    , "Ptr", pErrorCode   ; UErrorCode* in/out
    , "Cdecl Ptr")   ; return: BYTE*

●ubidi_getLevels(pBiDi, pErrorCode) = DLL("icuuc.dll", "void* ubidi_getLevels(void*, void*)")
# 呼び出し: ubidi_getLevels(pBiDi, pErrorCode)
# pBiDi : UBiDi* in/out -> "void*"
# pErrorCode : 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。