GetTitleBarInfo

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

BOOL GetTitleBarInfo(
    HWND hwnd,
    TITLEBARINFO* pti
);

<DllImport("USER32.dll", SetLastError:=True, ExactSpelling:=True)>
Public Shared Function GetTitleBarInfo(
    hwnd As IntPtr,   ' HWND
    pti As IntPtr   ' TITLEBARINFO* in/out
) As Boolean
End Function

' hwnd : HWND
' pti : TITLEBARINFO* in/out
Declare PtrSafe Function GetTitleBarInfo Lib "user32" ( _
    ByVal hwnd As LongPtr, _
    ByVal pti 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

GetTitleBarInfo = ctypes.windll.user32.GetTitleBarInfo
GetTitleBarInfo.restype = wintypes.BOOL
GetTitleBarInfo.argtypes = [
    wintypes.HANDLE,  # hwnd : HWND
    ctypes.c_void_p,  # pti : TITLEBARINFO* in/out
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('USER32.dll')
GetTitleBarInfo = Fiddle::Function.new(
  lib['GetTitleBarInfo'],
  [
    Fiddle::TYPE_VOIDP,  # hwnd : HWND
    Fiddle::TYPE_VOIDP,  # pti : TITLEBARINFO* in/out
  ],
  Fiddle::TYPE_INT)

#[link(name = "user32")]
extern "system" {
    fn GetTitleBarInfo(
        hwnd: *mut core::ffi::c_void,  // HWND
        pti: *mut TITLEBARINFO  // TITLEBARINFO* in/out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("USER32.dll", SetLastError = true)]
public static extern bool GetTitleBarInfo(IntPtr hwnd, IntPtr pti);
"@
$api = Add-Type -MemberDefinition $sig -Name 'USER32_GetTitleBarInfo' -Namespace Win32 -PassThru
# $api::GetTitleBarInfo(hwnd, pti)

#uselib "USER32.dll"
#func global GetTitleBarInfo "GetTitleBarInfo" sptr, sptr
; GetTitleBarInfo hwnd, varptr(pti)   ; 戻り値は stat
; hwnd : HWND -> "sptr"
; pti : TITLEBARINFO* 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 "USER32.dll"
#cfunc global GetTitleBarInfo "GetTitleBarInfo" sptr, var
; res = GetTitleBarInfo(hwnd, pti)
; hwnd : HWND -> "sptr"
; pti : TITLEBARINFO* in/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 GetTitleBarInfo(HWND hwnd, TITLEBARINFO* pti)
#uselib "USER32.dll"
#cfunc global GetTitleBarInfo "GetTitleBarInfo" intptr, var
; res = GetTitleBarInfo(hwnd, pti)
; hwnd : HWND -> "intptr"
; pti : TITLEBARINFO* in/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 (
	user32 = windows.NewLazySystemDLL("USER32.dll")
	procGetTitleBarInfo = user32.NewProc("GetTitleBarInfo")
)

// hwnd (HWND), pti (TITLEBARINFO* in/out)
r1, _, err := procGetTitleBarInfo.Call(
	uintptr(hwnd),
	uintptr(pti),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function GetTitleBarInfo(
  hwnd: THandle;   // HWND
  pti: Pointer   // TITLEBARINFO* in/out
): BOOL; stdcall;
  external 'USER32.dll' name 'GetTitleBarInfo';

result := DllCall("USER32\GetTitleBarInfo"
    , "Ptr", hwnd   ; HWND
    , "Ptr", pti   ; TITLEBARINFO* in/out
    , "Int")   ; return: BOOL

●GetTitleBarInfo(hwnd, pti) = DLL("USER32.dll", "bool GetTitleBarInfo(void*, void*)")
# 呼び出し: GetTitleBarInfo(hwnd, pti)
# hwnd : HWND -> "void*"
# pti : TITLEBARINFO* 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)。