uset_toPattern

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

INT uset_toPattern(
    const USet* set,
    WORD* result,
    INT resultCapacity,
    CHAR escapeUnprintable,
    UErrorCode* ec
);

<DllImport("icuuc.dll", ExactSpelling:=True, CallingConvention:=CallingConvention.Cdecl)>
Public Shared Function uset_toPattern(
    ByRef [set] As IntPtr,   ' USet*
    ByRef result As UShort,   ' WORD* in/out
    resultCapacity As Integer,   ' INT
    escapeUnprintable As SByte,   ' CHAR
    ByRef ec As Integer   ' UErrorCode* in/out
) As Integer
End Function

' set : USet*
' result : WORD* in/out
' resultCapacity : INT
' escapeUnprintable : CHAR
' ec : UErrorCode* in/out
Declare PtrSafe Function uset_toPattern Lib "icuuc" ( _
    ByRef set As LongPtr, _
    ByRef result As Integer, _
    ByVal resultCapacity As Long, _
    ByVal escapeUnprintable As Byte, _
    ByRef ec As Long) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

uset_toPattern = ctypes.cdll.icuuc.uset_toPattern
uset_toPattern.restype = ctypes.c_int
uset_toPattern.argtypes = [
    ctypes.c_void_p,  # set : USet*
    ctypes.POINTER(ctypes.c_ushort),  # result : WORD* in/out
    ctypes.c_int,  # resultCapacity : INT
    ctypes.c_byte,  # escapeUnprintable : CHAR
    ctypes.c_void_p,  # ec : UErrorCode* in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('icuuc.dll')
uset_toPattern = Fiddle::Function.new(
  lib['uset_toPattern'],
  [
    Fiddle::TYPE_VOIDP,  # set : USet*
    Fiddle::TYPE_VOIDP,  # result : WORD* in/out
    Fiddle::TYPE_INT,  # resultCapacity : INT
    Fiddle::TYPE_CHAR,  # escapeUnprintable : CHAR
    Fiddle::TYPE_VOIDP,  # ec : UErrorCode* in/out
  ],
  Fiddle::TYPE_INT, Fiddle::Function::CDECL)

#[link(name = "icuuc")]
extern "C" {
    fn uset_toPattern(
        set: *const isize,  // USet*
        result: *mut u16,  // WORD* in/out
        resultCapacity: i32,  // INT
        escapeUnprintable: i8,  // CHAR
        ec: *mut i32  // UErrorCode* in/out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("icuuc.dll", CallingConvention = CallingConvention.Cdecl)]
public static extern int uset_toPattern(ref IntPtr set, ref ushort result, int resultCapacity, sbyte escapeUnprintable, ref int ec);
"@
$api = Add-Type -MemberDefinition $sig -Name 'icuuc_uset_toPattern' -Namespace Win32 -PassThru
# $api::uset_toPattern(set, result, resultCapacity, escapeUnprintable, ec)

#uselib "icuuc.dll"
#func global uset_toPattern "uset_toPattern" sptr, sptr, sptr, sptr, sptr
; uset_toPattern set, varptr(result), resultCapacity, escapeUnprintable, ec   ; 戻り値は stat
; set : USet* -> "sptr"
; result : WORD* in/out -> "sptr"
; resultCapacity : INT -> "sptr"
; escapeUnprintable : CHAR -> "sptr"
; ec : 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 uset_toPattern "uset_toPattern" int, var, int, int, int
; res = uset_toPattern(set, result, resultCapacity, escapeUnprintable, ec)
; set : USet* -> "int"
; result : WORD* in/out -> "var"
; resultCapacity : INT -> "int"
; escapeUnprintable : CHAR -> "int"
; ec : 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。

; INT uset_toPattern(USet* set, WORD* result, INT resultCapacity, CHAR escapeUnprintable, UErrorCode* ec)
#uselib "icuuc.dll"
#cfunc global uset_toPattern "uset_toPattern" int, var, int, int, int
; res = uset_toPattern(set, result, resultCapacity, escapeUnprintable, ec)
; set : USet* -> "int"
; result : WORD* in/out -> "var"
; resultCapacity : INT -> "int"
; escapeUnprintable : CHAR -> "int"
; ec : 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")
	procuset_toPattern = icuuc.NewProc("uset_toPattern")
)

// set (USet*), result (WORD* in/out), resultCapacity (INT), escapeUnprintable (CHAR), ec (UErrorCode* in/out)
r1, _, err := procuset_toPattern.Call(
	uintptr(set),
	uintptr(result),
	uintptr(resultCapacity),
	uintptr(escapeUnprintable),
	uintptr(ec),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // INT

function uset_toPattern(
  set: Pointer;   // USet*
  result: Pointer;   // WORD* in/out
  resultCapacity: Integer;   // INT
  escapeUnprintable: Shortint;   // CHAR
  ec: Pointer   // UErrorCode* in/out
): Integer; cdecl;
  external 'icuuc.dll' name 'uset_toPattern';

result := DllCall("icuuc\uset_toPattern"
    , "Ptr", set   ; USet*
    , "Ptr", result   ; WORD* in/out
    , "Int", resultCapacity   ; INT
    , "Char", escapeUnprintable   ; CHAR
    , "Ptr", ec   ; UErrorCode* in/out
    , "Cdecl Int")   ; return: INT

●uset_toPattern(set, result, resultCapacity, escapeUnprintable, ec) = DLL("icuuc.dll", "int uset_toPattern(void*, void*, int, char, void*)")
# 呼び出し: uset_toPattern(set, result, resultCapacity, escapeUnprintable, ec)
# set : USet* -> "void*"
# result : WORD* in/out -> "void*"
# resultCapacity : INT -> "int"
# escapeUnprintable : CHAR -> "char"
# ec : 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。