ucnv_compareNames

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

INT ucnv_compareNames(
    LPCSTR name1,
    LPCSTR name2
);

<DllImport("icuuc.dll", ExactSpelling:=True, CallingConvention:=CallingConvention.Cdecl)>
Public Shared Function ucnv_compareNames(
    <MarshalAs(UnmanagedType.LPStr)> name1 As String,   ' LPCSTR
    <MarshalAs(UnmanagedType.LPStr)> name2 As String   ' LPCSTR
) As Integer
End Function

' name1 : LPCSTR
' name2 : LPCSTR
Declare PtrSafe Function ucnv_compareNames Lib "icuuc" ( _
    ByVal name1 As String, _
    ByVal name2 As String) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

ucnv_compareNames = ctypes.cdll.icuuc.ucnv_compareNames
ucnv_compareNames.restype = ctypes.c_int
ucnv_compareNames.argtypes = [
    wintypes.LPCSTR,  # name1 : LPCSTR
    wintypes.LPCSTR,  # name2 : LPCSTR
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('icuuc.dll')
ucnv_compareNames = Fiddle::Function.new(
  lib['ucnv_compareNames'],
  [
    Fiddle::TYPE_VOIDP,  # name1 : LPCSTR
    Fiddle::TYPE_VOIDP,  # name2 : LPCSTR
  ],
  Fiddle::TYPE_INT, Fiddle::Function::CDECL)

#[link(name = "icuuc")]
extern "C" {
    fn ucnv_compareNames(
        name1: *const u8,  // LPCSTR
        name2: *const u8  // LPCSTR
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("icuuc.dll", CallingConvention = CallingConvention.Cdecl)]
public static extern int ucnv_compareNames([MarshalAs(UnmanagedType.LPStr)] string name1, [MarshalAs(UnmanagedType.LPStr)] string name2);
"@
$api = Add-Type -MemberDefinition $sig -Name 'icuuc_ucnv_compareNames' -Namespace Win32 -PassThru
# $api::ucnv_compareNames(name1, name2)

#uselib "icuuc.dll"
#func global ucnv_compareNames "ucnv_compareNames" sptr, sptr
; ucnv_compareNames name1, name2   ; 戻り値は stat
; name1 : LPCSTR -> "sptr"
; name2 : LPCSTR -> "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 ucnv_compareNames "ucnv_compareNames" str, str
; res = ucnv_compareNames(name1, name2)
; name1 : LPCSTR -> "str"
; name2 : LPCSTR -> "str"

; INT ucnv_compareNames(LPCSTR name1, LPCSTR name2)
#uselib "icuuc.dll"
#cfunc global ucnv_compareNames "ucnv_compareNames" str, str
; res = ucnv_compareNames(name1, name2)
; name1 : LPCSTR -> "str"
; name2 : LPCSTR -> "str"

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

var (
	icuuc = windows.NewLazySystemDLL("icuuc.dll")
	procucnv_compareNames = icuuc.NewProc("ucnv_compareNames")
)

// name1 (LPCSTR), name2 (LPCSTR)
r1, _, err := procucnv_compareNames.Call(
	uintptr(unsafe.Pointer(windows.BytePtrFromString(name1))),
	uintptr(unsafe.Pointer(windows.BytePtrFromString(name2))),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // INT

function ucnv_compareNames(
  name1: PAnsiChar;   // LPCSTR
  name2: PAnsiChar   // LPCSTR
): Integer; cdecl;
  external 'icuuc.dll' name 'ucnv_compareNames';

result := DllCall("icuuc\ucnv_compareNames"
    , "AStr", name1   ; LPCSTR
    , "AStr", name2   ; LPCSTR
    , "Cdecl Int")   ; return: INT

●ucnv_compareNames(name1, name2) = DLL("icuuc.dll", "int ucnv_compareNames(char*, char*)")
# 呼び出し: ucnv_compareNames(name1, name2)
# name1 : LPCSTR -> "char*"
# name2 : LPCSTR -> "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。