CompareStringA

// KERNEL32.dll  (ANSI / -A)
#include <windows.h>

COMPARESTRING_RESULT CompareStringA(
    DWORD Locale,
    DWORD dwCmpFlags,
    CHAR* lpString1,
    INT cchCount1,
    CHAR* lpString2,
    INT cchCount2
);

<DllImport("KERNEL32.dll", CharSet:=CharSet.Ansi, ExactSpelling:=True)>
Public Shared Function CompareStringA(
    Locale As UInteger,   ' DWORD
    dwCmpFlags As UInteger,   ' DWORD
    lpString1 As IntPtr,   ' CHAR*
    cchCount1 As Integer,   ' INT
    lpString2 As IntPtr,   ' CHAR*
    cchCount2 As Integer   ' INT
) As Integer
End Function

' Locale : DWORD
' dwCmpFlags : DWORD
' lpString1 : CHAR*
' cchCount1 : INT
' lpString2 : CHAR*
' cchCount2 : INT
Declare PtrSafe Function CompareStringA Lib "kernel32" ( _
    ByVal Locale As Long, _
    ByVal dwCmpFlags As Long, _
    ByVal lpString1 As LongPtr, _
    ByVal cchCount1 As Long, _
    ByVal lpString2 As LongPtr, _
    ByVal cchCount2 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

CompareStringA = ctypes.windll.kernel32.CompareStringA
CompareStringA.restype = ctypes.c_int
CompareStringA.argtypes = [
    wintypes.DWORD,  # Locale : DWORD
    wintypes.DWORD,  # dwCmpFlags : DWORD
    ctypes.POINTER(ctypes.c_byte),  # lpString1 : CHAR*
    ctypes.c_int,  # cchCount1 : INT
    ctypes.POINTER(ctypes.c_byte),  # lpString2 : CHAR*
    ctypes.c_int,  # cchCount2 : INT
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('KERNEL32.dll')
CompareStringA = Fiddle::Function.new(
  lib['CompareStringA'],
  [
    -Fiddle::TYPE_INT,  # Locale : DWORD
    -Fiddle::TYPE_INT,  # dwCmpFlags : DWORD
    Fiddle::TYPE_VOIDP,  # lpString1 : CHAR*
    Fiddle::TYPE_INT,  # cchCount1 : INT
    Fiddle::TYPE_VOIDP,  # lpString2 : CHAR*
    Fiddle::TYPE_INT,  # cchCount2 : INT
  ],
  Fiddle::TYPE_INT)

#[link(name = "kernel32")]
extern "system" {
    fn CompareStringA(
        Locale: u32,  // DWORD
        dwCmpFlags: u32,  // DWORD
        lpString1: *mut i8,  // CHAR*
        cchCount1: i32,  // INT
        lpString2: *mut i8,  // CHAR*
        cchCount2: i32  // INT
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("KERNEL32.dll", CharSet = CharSet.Ansi)]
public static extern int CompareStringA(uint Locale, uint dwCmpFlags, IntPtr lpString1, int cchCount1, IntPtr lpString2, int cchCount2);
"@
$api = Add-Type -MemberDefinition $sig -Name 'KERNEL32_CompareStringA' -Namespace Win32 -PassThru
# $api::CompareStringA(Locale, dwCmpFlags, lpString1, cchCount1, lpString2, cchCount2)

#uselib "KERNEL32.dll"
#func global CompareStringA "CompareStringA" sptr, sptr, sptr, sptr, sptr, sptr
; CompareStringA Locale, dwCmpFlags, varptr(lpString1), cchCount1, varptr(lpString2), cchCount2   ; 戻り値は stat
; Locale : DWORD -> "sptr"
; dwCmpFlags : DWORD -> "sptr"
; lpString1 : CHAR* -> "sptr"
; cchCount1 : INT -> "sptr"
; lpString2 : CHAR* -> "sptr"
; cchCount2 : 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 CompareStringA "CompareStringA" int, int, var, int, var, int
; res = CompareStringA(Locale, dwCmpFlags, lpString1, cchCount1, lpString2, cchCount2)
; Locale : DWORD -> "int"
; dwCmpFlags : DWORD -> "int"
; lpString1 : CHAR* -> "var"
; cchCount1 : INT -> "int"
; lpString2 : CHAR* -> "var"
; cchCount2 : INT -> "int"
; ※出力/バッファ引数は var 方式(変数を直接渡す)。varptr 方式にも切替可。

; COMPARESTRING_RESULT CompareStringA(DWORD Locale, DWORD dwCmpFlags, CHAR* lpString1, INT cchCount1, CHAR* lpString2, INT cchCount2)
#uselib "KERNEL32.dll"
#cfunc global CompareStringA "CompareStringA" int, int, var, int, var, int
; res = CompareStringA(Locale, dwCmpFlags, lpString1, cchCount1, lpString2, cchCount2)
; Locale : DWORD -> "int"
; dwCmpFlags : DWORD -> "int"
; lpString1 : CHAR* -> "var"
; cchCount1 : INT -> "int"
; lpString2 : CHAR* -> "var"
; cchCount2 : INT -> "int"
; ※出力/バッファ引数は var 方式(変数を直接渡す)。varptr 方式にも切替可。

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

var (
	kernel32 = windows.NewLazySystemDLL("KERNEL32.dll")
	procCompareStringA = kernel32.NewProc("CompareStringA")
)

// Locale (DWORD), dwCmpFlags (DWORD), lpString1 (CHAR*), cchCount1 (INT), lpString2 (CHAR*), cchCount2 (INT)
r1, _, err := procCompareStringA.Call(
	uintptr(Locale),
	uintptr(dwCmpFlags),
	uintptr(lpString1),
	uintptr(cchCount1),
	uintptr(lpString2),
	uintptr(cchCount2),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // COMPARESTRING_RESULT

function CompareStringA(
  Locale: DWORD;   // DWORD
  dwCmpFlags: DWORD;   // DWORD
  lpString1: Pointer;   // CHAR*
  cchCount1: Integer;   // INT
  lpString2: Pointer;   // CHAR*
  cchCount2: Integer   // INT
): Integer; stdcall;
  external 'KERNEL32.dll' name 'CompareStringA';

result := DllCall("KERNEL32\CompareStringA"
    , "UInt", Locale   ; DWORD
    , "UInt", dwCmpFlags   ; DWORD
    , "Ptr", lpString1   ; CHAR*
    , "Int", cchCount1   ; INT
    , "Ptr", lpString2   ; CHAR*
    , "Int", cchCount2   ; INT
    , "Int")   ; return: COMPARESTRING_RESULT

●CompareStringA(Locale, dwCmpFlags, lpString1, cchCount1, lpString2, cchCount2) = DLL("KERNEL32.dll", "int CompareStringA(dword, dword, void*, int, void*, int)")
# 呼び出し: CompareStringA(Locale, dwCmpFlags, lpString1, cchCount1, lpString2, cchCount2)
# Locale : DWORD -> "dword"
# dwCmpFlags : DWORD -> "dword"
# lpString1 : CHAR* -> "void*"
# cchCount1 : INT -> "int"
# lpString2 : CHAR* -> "void*"
# cchCount2 : 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)。