GetWindowDpiAwarenessContext

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

DPI_AWARENESS_CONTEXT GetWindowDpiAwarenessContext(
    HWND hwnd
);

<DllImport("USER32.dll", ExactSpelling:=True)>
Public Shared Function GetWindowDpiAwarenessContext(
    hwnd As IntPtr   ' HWND
) As IntPtr
End Function

' hwnd : HWND
Declare PtrSafe Function GetWindowDpiAwarenessContext Lib "user32" ( _
    ByVal hwnd As LongPtr) As LongPtr
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

GetWindowDpiAwarenessContext = ctypes.windll.user32.GetWindowDpiAwarenessContext
GetWindowDpiAwarenessContext.restype = ctypes.c_void_p
GetWindowDpiAwarenessContext.argtypes = [
    wintypes.HANDLE,  # hwnd : HWND
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('USER32.dll')
GetWindowDpiAwarenessContext = Fiddle::Function.new(
  lib['GetWindowDpiAwarenessContext'],
  [
    Fiddle::TYPE_VOIDP,  # hwnd : HWND
  ],
  Fiddle::TYPE_VOIDP)

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

$sig = @"
[DllImport("USER32.dll")]
public static extern IntPtr GetWindowDpiAwarenessContext(IntPtr hwnd);
"@
$api = Add-Type -MemberDefinition $sig -Name 'USER32_GetWindowDpiAwarenessContext' -Namespace Win32 -PassThru
# $api::GetWindowDpiAwarenessContext(hwnd)

#uselib "USER32.dll"
#func global GetWindowDpiAwarenessContext "GetWindowDpiAwarenessContext" sptr
; GetWindowDpiAwarenessContext hwnd   ; 戻り値は stat
; hwnd : HWND -> "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 GetWindowDpiAwarenessContext "GetWindowDpiAwarenessContext" sptr
; res = GetWindowDpiAwarenessContext(hwnd)
; hwnd : HWND -> "sptr"

; DPI_AWARENESS_CONTEXT GetWindowDpiAwarenessContext(HWND hwnd)
#uselib "USER32.dll"
#cfunc global GetWindowDpiAwarenessContext "GetWindowDpiAwarenessContext" intptr
; res = GetWindowDpiAwarenessContext(hwnd)
; hwnd : HWND -> "intptr"

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

var (
	user32 = windows.NewLazySystemDLL("USER32.dll")
	procGetWindowDpiAwarenessContext = user32.NewProc("GetWindowDpiAwarenessContext")
)

// hwnd (HWND)
r1, _, err := procGetWindowDpiAwarenessContext.Call(
	uintptr(hwnd),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DPI_AWARENESS_CONTEXT

function GetWindowDpiAwarenessContext(
  hwnd: THandle   // HWND
): THandle; stdcall;
  external 'USER32.dll' name 'GetWindowDpiAwarenessContext';

result := DllCall("USER32\GetWindowDpiAwarenessContext"
    , "Ptr", hwnd   ; HWND
    , "Ptr")   ; return: DPI_AWARENESS_CONTEXT

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