PowerCreateRequest

関数

電源要求オブジェクトを作成しハンドルを返す。

DLLKERNEL32.dll呼出規約winapiSetLastErrorあり対応OSWindows 7 以降

シグネチャ

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

HANDLE PowerCreateRequest(
    REASON_CONTEXT* Context
);

パラメーター

名前	型	方向
Context	REASON_CONTEXT*	in

戻り値の型: HANDLE

各言語での呼び出し定義

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

HANDLE PowerCreateRequest(
    REASON_CONTEXT* Context
);

[DllImport("KERNEL32.dll", SetLastError = true, ExactSpelling = true)]
static extern IntPtr PowerCreateRequest(
    IntPtr Context   // REASON_CONTEXT*
);

<DllImport("KERNEL32.dll", SetLastError:=True, ExactSpelling:=True)>
Public Shared Function PowerCreateRequest(
    Context As IntPtr   ' REASON_CONTEXT*
) As IntPtr
End Function

' Context : REASON_CONTEXT*
Declare PtrSafe Function PowerCreateRequest Lib "kernel32" ( _
    ByVal Context 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

PowerCreateRequest = ctypes.windll.kernel32.PowerCreateRequest
PowerCreateRequest.restype = ctypes.c_void_p
PowerCreateRequest.argtypes = [
    ctypes.c_void_p,  # Context : REASON_CONTEXT*
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('KERNEL32.dll')
PowerCreateRequest = Fiddle::Function.new(
  lib['PowerCreateRequest'],
  [
    Fiddle::TYPE_VOIDP,  # Context : REASON_CONTEXT*
  ],
  Fiddle::TYPE_VOIDP)

#[link(name = "kernel32")]
extern "system" {
    fn PowerCreateRequest(
        Context: *mut REASON_CONTEXT  // REASON_CONTEXT*
    ) -> *mut core::ffi::c_void;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("KERNEL32.dll", SetLastError = true)]
public static extern IntPtr PowerCreateRequest(IntPtr Context);
"@
$api = Add-Type -MemberDefinition $sig -Name 'KERNEL32_PowerCreateRequest' -Namespace Win32 -PassThru
# $api::PowerCreateRequest(Context)

#uselib "KERNEL32.dll"
#func global PowerCreateRequest "PowerCreateRequest" sptr
; PowerCreateRequest varptr(Context)   ; 戻り値は stat
; Context : REASON_CONTEXT* -> "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。

出力引数:

#uselib "KERNEL32.dll"
#cfunc global PowerCreateRequest "PowerCreateRequest" var
; res = PowerCreateRequest(Context)
; Context : REASON_CONTEXT* -> "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。#uselib "KERNEL32.dll"
#cfunc global PowerCreateRequest "PowerCreateRequest" sptr
; res = PowerCreateRequest(varptr(Context))
; Context : REASON_CONTEXT* -> "sptr"
; ※出力/バッファ引数はポインタ方式(token=sptr / 呼び出しは varptr(変数))。

出力引数:

; HANDLE PowerCreateRequest(REASON_CONTEXT* Context)
#uselib "KERNEL32.dll"
#cfunc global PowerCreateRequest "PowerCreateRequest" var
; res = PowerCreateRequest(Context)
; Context : REASON_CONTEXT* -> "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。; HANDLE PowerCreateRequest(REASON_CONTEXT* Context)
#uselib "KERNEL32.dll"
#cfunc global PowerCreateRequest "PowerCreateRequest" intptr
; res = PowerCreateRequest(varptr(Context))
; Context : REASON_CONTEXT* -> "intptr"
; ※出力/バッファ引数はポインタ方式(token=intptr / 呼び出しは varptr(変数))。

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

var (
	kernel32 = windows.NewLazySystemDLL("KERNEL32.dll")
	procPowerCreateRequest = kernel32.NewProc("PowerCreateRequest")
)

// Context (REASON_CONTEXT*)
r1, _, err := procPowerCreateRequest.Call(
	uintptr(Context),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HANDLE

function PowerCreateRequest(
  Context: Pointer   // REASON_CONTEXT*
): THandle; stdcall;
  external 'KERNEL32.dll' name 'PowerCreateRequest';

result := DllCall("KERNEL32\PowerCreateRequest"
    , "Ptr", Context   ; REASON_CONTEXT*
    , "Ptr")   ; return: HANDLE

●PowerCreateRequest(Context) = DLL("KERNEL32.dll", "void* PowerCreateRequest(void*)")
# 呼び出し: PowerCreateRequest(Context)
# Context : REASON_CONTEXT* -> "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)。