IsTextUnicode

// ADVAPI32.dll
#include <windows.h>

BOOL IsTextUnicode(
    const void* lpv,
    INT iSize,
    IS_TEXT_UNICODE_RESULT* lpiResult   // optional
);

<DllImport("ADVAPI32.dll", ExactSpelling:=True)>
Public Shared Function IsTextUnicode(
    lpv As IntPtr,   ' void*
    iSize As Integer,   ' INT
    lpiResult As IntPtr   ' IS_TEXT_UNICODE_RESULT* optional, in/out
) As Boolean
End Function

' lpv : void*
' iSize : INT
' lpiResult : IS_TEXT_UNICODE_RESULT* optional, in/out
Declare PtrSafe Function IsTextUnicode Lib "advapi32" ( _
    ByVal lpv As LongPtr, _
    ByVal iSize As Long, _
    ByVal lpiResult As LongPtr) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

IsTextUnicode = ctypes.windll.advapi32.IsTextUnicode
IsTextUnicode.restype = wintypes.BOOL
IsTextUnicode.argtypes = [
    ctypes.POINTER(None),  # lpv : void*
    ctypes.c_int,  # iSize : INT
    ctypes.c_void_p,  # lpiResult : IS_TEXT_UNICODE_RESULT* optional, in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('ADVAPI32.dll')
IsTextUnicode = Fiddle::Function.new(
  lib['IsTextUnicode'],
  [
    Fiddle::TYPE_VOIDP,  # lpv : void*
    Fiddle::TYPE_INT,  # iSize : INT
    Fiddle::TYPE_VOIDP,  # lpiResult : IS_TEXT_UNICODE_RESULT* optional, in/out
  ],
  Fiddle::TYPE_INT)

#[link(name = "advapi32")]
extern "system" {
    fn IsTextUnicode(
        lpv: *const (),  // void*
        iSize: i32,  // INT
        lpiResult: *mut u32  // IS_TEXT_UNICODE_RESULT* optional, in/out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("ADVAPI32.dll")]
public static extern bool IsTextUnicode(IntPtr lpv, int iSize, IntPtr lpiResult);
"@
$api = Add-Type -MemberDefinition $sig -Name 'ADVAPI32_IsTextUnicode' -Namespace Win32 -PassThru
# $api::IsTextUnicode(lpv, iSize, lpiResult)

#uselib "ADVAPI32.dll"
#func global IsTextUnicode "IsTextUnicode" sptr, sptr, sptr
; IsTextUnicode lpv, iSize, lpiResult   ; 戻り値は stat
; lpv : void* -> "sptr"
; iSize : INT -> "sptr"
; lpiResult : IS_TEXT_UNICODE_RESULT* optional, 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 "ADVAPI32.dll"
#cfunc global IsTextUnicode "IsTextUnicode" sptr, int, int
; res = IsTextUnicode(lpv, iSize, lpiResult)
; lpv : void* -> "sptr"
; iSize : INT -> "int"
; lpiResult : IS_TEXT_UNICODE_RESULT* optional, in/out -> "int"

; BOOL IsTextUnicode(void* lpv, INT iSize, IS_TEXT_UNICODE_RESULT* lpiResult)
#uselib "ADVAPI32.dll"
#cfunc global IsTextUnicode "IsTextUnicode" intptr, int, int
; res = IsTextUnicode(lpv, iSize, lpiResult)
; lpv : void* -> "intptr"
; iSize : INT -> "int"
; lpiResult : IS_TEXT_UNICODE_RESULT* optional, in/out -> "int"

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

var (
	advapi32 = windows.NewLazySystemDLL("ADVAPI32.dll")
	procIsTextUnicode = advapi32.NewProc("IsTextUnicode")
)

// lpv (void*), iSize (INT), lpiResult (IS_TEXT_UNICODE_RESULT* optional, in/out)
r1, _, err := procIsTextUnicode.Call(
	uintptr(lpv),
	uintptr(iSize),
	uintptr(lpiResult),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function IsTextUnicode(
  lpv: Pointer;   // void*
  iSize: Integer;   // INT
  lpiResult: Pointer   // IS_TEXT_UNICODE_RESULT* optional, in/out
): BOOL; stdcall;
  external 'ADVAPI32.dll' name 'IsTextUnicode';

result := DllCall("ADVAPI32\IsTextUnicode"
    , "Ptr", lpv   ; void*
    , "Int", iSize   ; INT
    , "Ptr", lpiResult   ; IS_TEXT_UNICODE_RESULT* optional, in/out
    , "Int")   ; return: BOOL

●IsTextUnicode(lpv, iSize, lpiResult) = DLL("ADVAPI32.dll", "bool IsTextUnicode(void*, int, void*)")
# 呼び出し: IsTextUnicode(lpv, iSize, lpiResult)
# lpv : void* -> "void*"
# iSize : INT -> "int"
# lpiResult : IS_TEXT_UNICODE_RESULT* optional, 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)。