GetDevicePowerState

// KERNEL32.dll
#include <windows.h>

BOOL GetDevicePowerState(
    HANDLE hDevice,
    BOOL* pfOn
);

<DllImport("KERNEL32.dll", ExactSpelling:=True)>
Public Shared Function GetDevicePowerState(
    hDevice As IntPtr,   ' HANDLE
    <Out> ByRef pfOn As Integer   ' BOOL* out
) As Boolean
End Function

' hDevice : HANDLE
' pfOn : BOOL* out
Declare PtrSafe Function GetDevicePowerState Lib "kernel32" ( _
    ByVal hDevice As LongPtr, _
    ByRef pfOn 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

GetDevicePowerState = ctypes.windll.kernel32.GetDevicePowerState
GetDevicePowerState.restype = wintypes.BOOL
GetDevicePowerState.argtypes = [
    wintypes.HANDLE,  # hDevice : HANDLE
    ctypes.c_void_p,  # pfOn : BOOL* out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('KERNEL32.dll')
GetDevicePowerState = Fiddle::Function.new(
  lib['GetDevicePowerState'],
  [
    Fiddle::TYPE_VOIDP,  # hDevice : HANDLE
    Fiddle::TYPE_VOIDP,  # pfOn : BOOL* out
  ],
  Fiddle::TYPE_INT)

#[link(name = "kernel32")]
extern "system" {
    fn GetDevicePowerState(
        hDevice: *mut core::ffi::c_void,  // HANDLE
        pfOn: *mut i32  // BOOL* out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("KERNEL32.dll")]
public static extern bool GetDevicePowerState(IntPtr hDevice, out int pfOn);
"@
$api = Add-Type -MemberDefinition $sig -Name 'KERNEL32_GetDevicePowerState' -Namespace Win32 -PassThru
# $api::GetDevicePowerState(hDevice, pfOn)

#uselib "KERNEL32.dll"
#func global GetDevicePowerState "GetDevicePowerState" sptr, sptr
; GetDevicePowerState hDevice, pfOn   ; 戻り値は stat
; hDevice : HANDLE -> "sptr"
; pfOn : BOOL* 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 GetDevicePowerState "GetDevicePowerState" sptr, int
; res = GetDevicePowerState(hDevice, pfOn)
; hDevice : HANDLE -> "sptr"
; pfOn : BOOL* out -> "int"

; BOOL GetDevicePowerState(HANDLE hDevice, BOOL* pfOn)
#uselib "KERNEL32.dll"
#cfunc global GetDevicePowerState "GetDevicePowerState" intptr, int
; res = GetDevicePowerState(hDevice, pfOn)
; hDevice : HANDLE -> "intptr"
; pfOn : BOOL* out -> "int"

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

var (
	kernel32 = windows.NewLazySystemDLL("KERNEL32.dll")
	procGetDevicePowerState = kernel32.NewProc("GetDevicePowerState")
)

// hDevice (HANDLE), pfOn (BOOL* out)
r1, _, err := procGetDevicePowerState.Call(
	uintptr(hDevice),
	uintptr(pfOn),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function GetDevicePowerState(
  hDevice: THandle;   // HANDLE
  pfOn: Pointer   // BOOL* out
): BOOL; stdcall;
  external 'KERNEL32.dll' name 'GetDevicePowerState';

result := DllCall("KERNEL32\GetDevicePowerState"
    , "Ptr", hDevice   ; HANDLE
    , "Ptr", pfOn   ; BOOL* out
    , "Int")   ; return: BOOL

●GetDevicePowerState(hDevice, pfOn) = DLL("KERNEL32.dll", "bool GetDevicePowerState(void*, void*)")
# 呼び出し: GetDevicePowerState(hDevice, pfOn)
# hDevice : HANDLE -> "void*"
# pfOn : BOOL* 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)。