u_charFromName

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

INT u_charFromName(
    UCharNameChoice nameChoice,
    LPCSTR name,
    UErrorCode* pErrorCode
);

<DllImport("icuuc.dll", ExactSpelling:=True, CallingConvention:=CallingConvention.Cdecl)>
Public Shared Function u_charFromName(
    nameChoice As Integer,   ' UCharNameChoice
    <MarshalAs(UnmanagedType.LPStr)> name As String,   ' LPCSTR
    ByRef pErrorCode As Integer   ' UErrorCode* in/out
) As Integer
End Function

' nameChoice : UCharNameChoice
' name : LPCSTR
' pErrorCode : UErrorCode* in/out
Declare PtrSafe Function u_charFromName Lib "icuuc" ( _
    ByVal nameChoice As Long, _
    ByVal name As String, _
    ByRef pErrorCode 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

u_charFromName = ctypes.cdll.icuuc.u_charFromName
u_charFromName.restype = ctypes.c_int
u_charFromName.argtypes = [
    ctypes.c_int,  # nameChoice : UCharNameChoice
    wintypes.LPCSTR,  # name : LPCSTR
    ctypes.c_void_p,  # pErrorCode : UErrorCode* in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('icuuc.dll')
u_charFromName = Fiddle::Function.new(
  lib['u_charFromName'],
  [
    Fiddle::TYPE_INT,  # nameChoice : UCharNameChoice
    Fiddle::TYPE_VOIDP,  # name : LPCSTR
    Fiddle::TYPE_VOIDP,  # pErrorCode : UErrorCode* in/out
  ],
  Fiddle::TYPE_INT, Fiddle::Function::CDECL)

#[link(name = "icuuc")]
extern "C" {
    fn u_charFromName(
        nameChoice: i32,  // UCharNameChoice
        name: *const u8,  // LPCSTR
        pErrorCode: *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 u_charFromName(int nameChoice, [MarshalAs(UnmanagedType.LPStr)] string name, ref int pErrorCode);
"@
$api = Add-Type -MemberDefinition $sig -Name 'icuuc_u_charFromName' -Namespace Win32 -PassThru
# $api::u_charFromName(nameChoice, name, pErrorCode)

#uselib "icuuc.dll"
#func global u_charFromName "u_charFromName" sptr, sptr, sptr
; u_charFromName nameChoice, name, pErrorCode   ; 戻り値は stat
; nameChoice : UCharNameChoice -> "sptr"
; name : LPCSTR -> "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 u_charFromName "u_charFromName" int, str, int
; res = u_charFromName(nameChoice, name, pErrorCode)
; nameChoice : UCharNameChoice -> "int"
; name : LPCSTR -> "str"
; pErrorCode : UErrorCode* in/out -> "int"

; INT u_charFromName(UCharNameChoice nameChoice, LPCSTR name, UErrorCode* pErrorCode)
#uselib "icuuc.dll"
#cfunc global u_charFromName "u_charFromName" int, str, int
; res = u_charFromName(nameChoice, name, pErrorCode)
; nameChoice : UCharNameChoice -> "int"
; name : LPCSTR -> "str"
; pErrorCode : UErrorCode* in/out -> "int"

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

var (
	icuuc = windows.NewLazySystemDLL("icuuc.dll")
	procu_charFromName = icuuc.NewProc("u_charFromName")
)

// nameChoice (UCharNameChoice), name (LPCSTR), pErrorCode (UErrorCode* in/out)
r1, _, err := procu_charFromName.Call(
	uintptr(nameChoice),
	uintptr(unsafe.Pointer(windows.BytePtrFromString(name))),
	uintptr(pErrorCode),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // INT

function u_charFromName(
  nameChoice: Integer;   // UCharNameChoice
  name: PAnsiChar;   // LPCSTR
  pErrorCode: Pointer   // UErrorCode* in/out
): Integer; cdecl;
  external 'icuuc.dll' name 'u_charFromName';

result := DllCall("icuuc\u_charFromName"
    , "Int", nameChoice   ; UCharNameChoice
    , "AStr", name   ; LPCSTR
    , "Ptr", pErrorCode   ; UErrorCode* in/out
    , "Cdecl Int")   ; return: INT

●u_charFromName(nameChoice, name, pErrorCode) = DLL("icuuc.dll", "int u_charFromName(int, char*, void*)")
# 呼び出し: u_charFromName(nameChoice, name, pErrorCode)
# nameChoice : UCharNameChoice -> "int"
# name : LPCSTR -> "char*"
# 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。