GetDlgItemInt

// USER32.dll
#include <windows.h>

DWORD GetDlgItemInt(
    HWND hDlg,
    INT nIDDlgItem,
    BOOL* lpTranslated,   // optional
    BOOL bSigned
);

<DllImport("USER32.dll", SetLastError:=True, ExactSpelling:=True)>
Public Shared Function GetDlgItemInt(
    hDlg As IntPtr,   ' HWND
    nIDDlgItem As Integer,   ' INT
    lpTranslated As IntPtr,   ' BOOL* optional, out
    bSigned As Boolean   ' BOOL
) As UInteger
End Function

' hDlg : HWND
' nIDDlgItem : INT
' lpTranslated : BOOL* optional, out
' bSigned : BOOL
Declare PtrSafe Function GetDlgItemInt Lib "user32" ( _
    ByVal hDlg As LongPtr, _
    ByVal nIDDlgItem As Long, _
    ByVal lpTranslated As LongPtr, _
    ByVal bSigned 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

GetDlgItemInt = ctypes.windll.user32.GetDlgItemInt
GetDlgItemInt.restype = wintypes.DWORD
GetDlgItemInt.argtypes = [
    wintypes.HANDLE,  # hDlg : HWND
    ctypes.c_int,  # nIDDlgItem : INT
    ctypes.c_void_p,  # lpTranslated : BOOL* optional, out
    wintypes.BOOL,  # bSigned : BOOL
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('USER32.dll')
GetDlgItemInt = Fiddle::Function.new(
  lib['GetDlgItemInt'],
  [
    Fiddle::TYPE_VOIDP,  # hDlg : HWND
    Fiddle::TYPE_INT,  # nIDDlgItem : INT
    Fiddle::TYPE_VOIDP,  # lpTranslated : BOOL* optional, out
    Fiddle::TYPE_INT,  # bSigned : BOOL
  ],
  -Fiddle::TYPE_INT)

#[link(name = "user32")]
extern "system" {
    fn GetDlgItemInt(
        hDlg: *mut core::ffi::c_void,  // HWND
        nIDDlgItem: i32,  // INT
        lpTranslated: *mut i32,  // BOOL* optional, out
        bSigned: i32  // BOOL
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("USER32.dll", SetLastError = true)]
public static extern uint GetDlgItemInt(IntPtr hDlg, int nIDDlgItem, IntPtr lpTranslated, bool bSigned);
"@
$api = Add-Type -MemberDefinition $sig -Name 'USER32_GetDlgItemInt' -Namespace Win32 -PassThru
# $api::GetDlgItemInt(hDlg, nIDDlgItem, lpTranslated, bSigned)

#uselib "USER32.dll"
#func global GetDlgItemInt "GetDlgItemInt" sptr, sptr, sptr, sptr
; GetDlgItemInt hDlg, nIDDlgItem, lpTranslated, bSigned   ; 戻り値は stat
; hDlg : HWND -> "sptr"
; nIDDlgItem : INT -> "sptr"
; lpTranslated : BOOL* optional, out -> "sptr"
; bSigned : BOOL -> "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 "USER32.dll"
#cfunc global GetDlgItemInt "GetDlgItemInt" sptr, int, int, int
; res = GetDlgItemInt(hDlg, nIDDlgItem, lpTranslated, bSigned)
; hDlg : HWND -> "sptr"
; nIDDlgItem : INT -> "int"
; lpTranslated : BOOL* optional, out -> "int"
; bSigned : BOOL -> "int"

; DWORD GetDlgItemInt(HWND hDlg, INT nIDDlgItem, BOOL* lpTranslated, BOOL bSigned)
#uselib "USER32.dll"
#cfunc global GetDlgItemInt "GetDlgItemInt" intptr, int, int, int
; res = GetDlgItemInt(hDlg, nIDDlgItem, lpTranslated, bSigned)
; hDlg : HWND -> "intptr"
; nIDDlgItem : INT -> "int"
; lpTranslated : BOOL* optional, out -> "int"
; bSigned : BOOL -> "int"

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

var (
	user32 = windows.NewLazySystemDLL("USER32.dll")
	procGetDlgItemInt = user32.NewProc("GetDlgItemInt")
)

// hDlg (HWND), nIDDlgItem (INT), lpTranslated (BOOL* optional, out), bSigned (BOOL)
r1, _, err := procGetDlgItemInt.Call(
	uintptr(hDlg),
	uintptr(nIDDlgItem),
	uintptr(lpTranslated),
	uintptr(bSigned),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function GetDlgItemInt(
  hDlg: THandle;   // HWND
  nIDDlgItem: Integer;   // INT
  lpTranslated: Pointer;   // BOOL* optional, out
  bSigned: BOOL   // BOOL
): DWORD; stdcall;
  external 'USER32.dll' name 'GetDlgItemInt';

result := DllCall("USER32\GetDlgItemInt"
    , "Ptr", hDlg   ; HWND
    , "Int", nIDDlgItem   ; INT
    , "Ptr", lpTranslated   ; BOOL* optional, out
    , "Int", bSigned   ; BOOL
    , "UInt")   ; return: DWORD

●GetDlgItemInt(hDlg, nIDDlgItem, lpTranslated, bSigned) = DLL("USER32.dll", "dword GetDlgItemInt(void*, int, void*, bool)")
# 呼び出し: GetDlgItemInt(hDlg, nIDDlgItem, lpTranslated, bSigned)
# hDlg : HWND -> "void*"
# nIDDlgItem : INT -> "int"
# lpTranslated : BOOL* optional, out -> "void*"
# bSigned : BOOL -> "bool"
# 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)。