ucasemap_getLocale

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

LPSTR ucasemap_getLocale(
    const UCaseMap* csm
);

<DllImport("icuuc.dll", ExactSpelling:=True, CallingConvention:=CallingConvention.Cdecl)>
Public Shared Function ucasemap_getLocale(
    ByRef csm As IntPtr   ' UCaseMap*
) As IntPtr
End Function

' csm : UCaseMap*
Declare PtrSafe Function ucasemap_getLocale Lib "icuuc" ( _
    ByRef csm As LongPtr) As LongPtr
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

ucasemap_getLocale = ctypes.cdll.icuuc.ucasemap_getLocale
ucasemap_getLocale.restype = wintypes.LPSTR
ucasemap_getLocale.argtypes = [
    ctypes.c_void_p,  # csm : UCaseMap*
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('icuuc.dll')
ucasemap_getLocale = Fiddle::Function.new(
  lib['ucasemap_getLocale'],
  [
    Fiddle::TYPE_VOIDP,  # csm : UCaseMap*
  ],
  Fiddle::TYPE_VOIDP, Fiddle::Function::CDECL)

#[link(name = "icuuc")]
extern "C" {
    fn ucasemap_getLocale(
        csm: *const isize  // UCaseMap*
    ) -> *mut u8;
}
// crates: windows-sys provides ready-made bindings for this API.

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

#uselib "icuuc.dll"
#func global ucasemap_getLocale "ucasemap_getLocale" sptr
; ucasemap_getLocale csm   ; 戻り値は stat
; csm : UCaseMap* -> "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 ucasemap_getLocale "ucasemap_getLocale" int
; res = ucasemap_getLocale(csm)
; csm : UCaseMap* -> "int"

; LPSTR ucasemap_getLocale(UCaseMap* csm)
#uselib "icuuc.dll"
#cfunc global ucasemap_getLocale "ucasemap_getLocale" int
; res = ucasemap_getLocale(csm)
; csm : UCaseMap* -> "int"

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

var (
	icuuc = windows.NewLazySystemDLL("icuuc.dll")
	procucasemap_getLocale = icuuc.NewProc("ucasemap_getLocale")
)

// csm (UCaseMap*)
r1, _, err := procucasemap_getLocale.Call(
	uintptr(csm),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // LPSTR

function ucasemap_getLocale(
  csm: Pointer   // UCaseMap*
): PAnsiChar; cdecl;
  external 'icuuc.dll' name 'ucasemap_getLocale';

result := DllCall("icuuc\ucasemap_getLocale"
    , "Ptr", csm   ; UCaseMap*
    , "Cdecl Ptr")   ; return: LPSTR

●ucasemap_getLocale(csm) = DLL("icuuc.dll", "char* ucasemap_getLocale(void*)")
# 呼び出し: ucasemap_getLocale(csm)
# csm : UCaseMap* -> "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。