IsNormalizedString

// KERNEL32.dll
#include <windows.h>

BOOL IsNormalizedString(
    NORM_FORM NormForm,
    LPCWSTR lpString,
    INT cwLength
);

<DllImport("KERNEL32.dll", SetLastError:=True, ExactSpelling:=True)>
Public Shared Function IsNormalizedString(
    NormForm As Integer,   ' NORM_FORM
    <MarshalAs(UnmanagedType.LPWStr)> lpString As String,   ' LPCWSTR
    cwLength As Integer   ' INT
) As Boolean
End Function

' NormForm : NORM_FORM
' lpString : LPCWSTR
' cwLength : INT
Declare PtrSafe Function IsNormalizedString Lib "kernel32" ( _
    ByVal NormForm As Long, _
    ByVal lpString As LongPtr, _
    ByVal cwLength 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

IsNormalizedString = ctypes.windll.kernel32.IsNormalizedString
IsNormalizedString.restype = wintypes.BOOL
IsNormalizedString.argtypes = [
    ctypes.c_int,  # NormForm : NORM_FORM
    wintypes.LPCWSTR,  # lpString : LPCWSTR
    ctypes.c_int,  # cwLength : INT
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('KERNEL32.dll')
IsNormalizedString = Fiddle::Function.new(
  lib['IsNormalizedString'],
  [
    Fiddle::TYPE_INT,  # NormForm : NORM_FORM
    Fiddle::TYPE_VOIDP,  # lpString : LPCWSTR
    Fiddle::TYPE_INT,  # cwLength : INT
  ],
  Fiddle::TYPE_INT)

#[link(name = "kernel32")]
extern "system" {
    fn IsNormalizedString(
        NormForm: i32,  // NORM_FORM
        lpString: *const u16,  // LPCWSTR
        cwLength: i32  // INT
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("KERNEL32.dll", SetLastError = true)]
public static extern bool IsNormalizedString(int NormForm, [MarshalAs(UnmanagedType.LPWStr)] string lpString, int cwLength);
"@
$api = Add-Type -MemberDefinition $sig -Name 'KERNEL32_IsNormalizedString' -Namespace Win32 -PassThru
# $api::IsNormalizedString(NormForm, lpString, cwLength)

#uselib "KERNEL32.dll"
#func global IsNormalizedString "IsNormalizedString" sptr, sptr, sptr
; IsNormalizedString NormForm, lpString, cwLength   ; 戻り値は stat
; NormForm : NORM_FORM -> "sptr"
; lpString : LPCWSTR -> "sptr"
; cwLength : INT -> "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 "KERNEL32.dll"
#cfunc global IsNormalizedString "IsNormalizedString" int, wstr, int
; res = IsNormalizedString(NormForm, lpString, cwLength)
; NormForm : NORM_FORM -> "int"
; lpString : LPCWSTR -> "wstr"
; cwLength : INT -> "int"

; BOOL IsNormalizedString(NORM_FORM NormForm, LPCWSTR lpString, INT cwLength)
#uselib "KERNEL32.dll"
#cfunc global IsNormalizedString "IsNormalizedString" int, wstr, int
; res = IsNormalizedString(NormForm, lpString, cwLength)
; NormForm : NORM_FORM -> "int"
; lpString : LPCWSTR -> "wstr"
; cwLength : INT -> "int"

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

var (
	kernel32 = windows.NewLazySystemDLL("KERNEL32.dll")
	procIsNormalizedString = kernel32.NewProc("IsNormalizedString")
)

// NormForm (NORM_FORM), lpString (LPCWSTR), cwLength (INT)
r1, _, err := procIsNormalizedString.Call(
	uintptr(NormForm),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(lpString))),
	uintptr(cwLength),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function IsNormalizedString(
  NormForm: Integer;   // NORM_FORM
  lpString: PWideChar;   // LPCWSTR
  cwLength: Integer   // INT
): BOOL; stdcall;
  external 'KERNEL32.dll' name 'IsNormalizedString';

result := DllCall("KERNEL32\IsNormalizedString"
    , "Int", NormForm   ; NORM_FORM
    , "WStr", lpString   ; LPCWSTR
    , "Int", cwLength   ; INT
    , "Int")   ; return: BOOL

●IsNormalizedString(NormForm, lpString, cwLength) = DLL("KERNEL32.dll", "bool IsNormalizedString(int, char*, int)")
# 呼び出し: IsNormalizedString(NormForm, lpString, cwLength)
# NormForm : NORM_FORM -> "int"
# lpString : LPCWSTR -> "char*"
# cwLength : INT -> "int"
# 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)。