GetStringTypeA

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

BOOL GetStringTypeA(
    DWORD Locale,
    DWORD dwInfoType,
    LPCSTR lpSrcStr,
    INT cchSrc,
    WORD* lpCharType
);

<DllImport("KERNEL32.dll", CharSet:=CharSet.Ansi, SetLastError:=True, ExactSpelling:=True)>
Public Shared Function GetStringTypeA(
    Locale As UInteger,   ' DWORD
    dwInfoType As UInteger,   ' DWORD
    <MarshalAs(UnmanagedType.LPStr)> lpSrcStr As String,   ' LPCSTR
    cchSrc As Integer,   ' INT
    <Out> ByRef lpCharType As UShort   ' WORD* out
) As Boolean
End Function

' Locale : DWORD
' dwInfoType : DWORD
' lpSrcStr : LPCSTR
' cchSrc : INT
' lpCharType : WORD* out
Declare PtrSafe Function GetStringTypeA Lib "kernel32" ( _
    ByVal Locale As Long, _
    ByVal dwInfoType As Long, _
    ByVal lpSrcStr As String, _
    ByVal cchSrc As Long, _
    ByRef lpCharType As Integer) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

GetStringTypeA = ctypes.windll.kernel32.GetStringTypeA
GetStringTypeA.restype = wintypes.BOOL
GetStringTypeA.argtypes = [
    wintypes.DWORD,  # Locale : DWORD
    wintypes.DWORD,  # dwInfoType : DWORD
    wintypes.LPCSTR,  # lpSrcStr : LPCSTR
    ctypes.c_int,  # cchSrc : INT
    ctypes.POINTER(ctypes.c_ushort),  # lpCharType : WORD* out
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('KERNEL32.dll')
GetStringTypeA = Fiddle::Function.new(
  lib['GetStringTypeA'],
  [
    -Fiddle::TYPE_INT,  # Locale : DWORD
    -Fiddle::TYPE_INT,  # dwInfoType : DWORD
    Fiddle::TYPE_VOIDP,  # lpSrcStr : LPCSTR
    Fiddle::TYPE_INT,  # cchSrc : INT
    Fiddle::TYPE_VOIDP,  # lpCharType : WORD* out
  ],
  Fiddle::TYPE_INT)

#[link(name = "kernel32")]
extern "system" {
    fn GetStringTypeA(
        Locale: u32,  // DWORD
        dwInfoType: u32,  // DWORD
        lpSrcStr: *const u8,  // LPCSTR
        cchSrc: i32,  // INT
        lpCharType: *mut u16  // WORD* out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("KERNEL32.dll", CharSet = CharSet.Ansi, SetLastError = true)]
public static extern bool GetStringTypeA(uint Locale, uint dwInfoType, [MarshalAs(UnmanagedType.LPStr)] string lpSrcStr, int cchSrc, out ushort lpCharType);
"@
$api = Add-Type -MemberDefinition $sig -Name 'KERNEL32_GetStringTypeA' -Namespace Win32 -PassThru
# $api::GetStringTypeA(Locale, dwInfoType, lpSrcStr, cchSrc, lpCharType)

#uselib "KERNEL32.dll"
#func global GetStringTypeA "GetStringTypeA" sptr, sptr, sptr, sptr, sptr
; GetStringTypeA Locale, dwInfoType, lpSrcStr, cchSrc, varptr(lpCharType)   ; 戻り値は stat
; Locale : DWORD -> "sptr"
; dwInfoType : DWORD -> "sptr"
; lpSrcStr : LPCSTR -> "sptr"
; cchSrc : INT -> "sptr"
; lpCharType : WORD* 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 "KERNEL32.dll"
#cfunc global GetStringTypeA "GetStringTypeA" int, int, str, int, var
; res = GetStringTypeA(Locale, dwInfoType, lpSrcStr, cchSrc, lpCharType)
; Locale : DWORD -> "int"
; dwInfoType : DWORD -> "int"
; lpSrcStr : LPCSTR -> "str"
; cchSrc : INT -> "int"
; lpCharType : WORD* out -> "var"
; ※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。

; BOOL GetStringTypeA(DWORD Locale, DWORD dwInfoType, LPCSTR lpSrcStr, INT cchSrc, WORD* lpCharType)
#uselib "KERNEL32.dll"
#cfunc global GetStringTypeA "GetStringTypeA" int, int, str, int, var
; res = GetStringTypeA(Locale, dwInfoType, lpSrcStr, cchSrc, lpCharType)
; Locale : DWORD -> "int"
; dwInfoType : DWORD -> "int"
; lpSrcStr : LPCSTR -> "str"
; cchSrc : INT -> "int"
; lpCharType : WORD* out -> "var"
; ※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")
	procGetStringTypeA = kernel32.NewProc("GetStringTypeA")
)

// Locale (DWORD), dwInfoType (DWORD), lpSrcStr (LPCSTR), cchSrc (INT), lpCharType (WORD* out)
r1, _, err := procGetStringTypeA.Call(
	uintptr(Locale),
	uintptr(dwInfoType),
	uintptr(unsafe.Pointer(windows.BytePtrFromString(lpSrcStr))),
	uintptr(cchSrc),
	uintptr(lpCharType),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function GetStringTypeA(
  Locale: DWORD;   // DWORD
  dwInfoType: DWORD;   // DWORD
  lpSrcStr: PAnsiChar;   // LPCSTR
  cchSrc: Integer;   // INT
  lpCharType: Pointer   // WORD* out
): BOOL; stdcall;
  external 'KERNEL32.dll' name 'GetStringTypeA';

result := DllCall("KERNEL32\GetStringTypeA"
    , "UInt", Locale   ; DWORD
    , "UInt", dwInfoType   ; DWORD
    , "AStr", lpSrcStr   ; LPCSTR
    , "Int", cchSrc   ; INT
    , "Ptr", lpCharType   ; WORD* out
    , "Int")   ; return: BOOL

●GetStringTypeA(Locale, dwInfoType, lpSrcStr, cchSrc, lpCharType) = DLL("KERNEL32.dll", "bool GetStringTypeA(dword, dword, char*, int, void*)")
# 呼び出し: GetStringTypeA(Locale, dwInfoType, lpSrcStr, cchSrc, lpCharType)
# Locale : DWORD -> "dword"
# dwInfoType : DWORD -> "dword"
# lpSrcStr : LPCSTR -> "char*"
# cchSrc : INT -> "int"
# lpCharType : WORD* 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)。