uregion_getRegionCode

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

LPSTR uregion_getRegionCode(
    const URegion* uregion
);

<DllImport("icuin.dll", ExactSpelling:=True, CallingConvention:=CallingConvention.Cdecl)>
Public Shared Function uregion_getRegionCode(
    ByRef uregion As IntPtr   ' URegion*
) As IntPtr
End Function

' uregion : URegion*
Declare PtrSafe Function uregion_getRegionCode Lib "icuin" ( _
    ByRef uregion 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

uregion_getRegionCode = ctypes.cdll.icuin.uregion_getRegionCode
uregion_getRegionCode.restype = wintypes.LPSTR
uregion_getRegionCode.argtypes = [
    ctypes.c_void_p,  # uregion : URegion*
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('icuin.dll')
uregion_getRegionCode = Fiddle::Function.new(
  lib['uregion_getRegionCode'],
  [
    Fiddle::TYPE_VOIDP,  # uregion : URegion*
  ],
  Fiddle::TYPE_VOIDP, Fiddle::Function::CDECL)

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

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

#uselib "icuin.dll"
#func global uregion_getRegionCode "uregion_getRegionCode" sptr
; uregion_getRegionCode uregion   ; 戻り値は stat
; uregion : URegion* -> "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 "icuin.dll"
#cfunc global uregion_getRegionCode "uregion_getRegionCode" int
; res = uregion_getRegionCode(uregion)
; uregion : URegion* -> "int"

; LPSTR uregion_getRegionCode(URegion* uregion)
#uselib "icuin.dll"
#cfunc global uregion_getRegionCode "uregion_getRegionCode" int
; res = uregion_getRegionCode(uregion)
; uregion : URegion* -> "int"

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

var (
	icuin = windows.NewLazySystemDLL("icuin.dll")
	procuregion_getRegionCode = icuin.NewProc("uregion_getRegionCode")
)

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

function uregion_getRegionCode(
  uregion: Pointer   // URegion*
): PAnsiChar; cdecl;
  external 'icuin.dll' name 'uregion_getRegionCode';

result := DllCall("icuin\uregion_getRegionCode"
    , "Ptr", uregion   ; URegion*
    , "Cdecl Ptr")   ; return: LPSTR

●uregion_getRegionCode(uregion) = DLL("icuin.dll", "char* uregion_getRegionCode(void*)")
# 呼び出し: uregion_getRegionCode(uregion)
# uregion : URegion* -> "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。