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ReadGlobalPwrPolicy

関数

現在のグローバル電源ポリシーを読み取る。

DLLPOWRPROF.dll呼出規約winapiSetLastErrorあり対応OSWindows XP 以降

シグネチャ

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

BOOLEAN ReadGlobalPwrPolicy(
    GLOBAL_POWER_POLICY* pGlobalPowerPolicy
);

パラメーター

名前	型	方向
pGlobalPowerPolicy	GLOBAL_POWER_POLICY*	in

戻り値の型: BOOLEAN

各言語での呼び出し定義

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

BOOLEAN ReadGlobalPwrPolicy(
    GLOBAL_POWER_POLICY* pGlobalPowerPolicy
);

[DllImport("POWRPROF.dll", SetLastError = true, ExactSpelling = true)]
static extern byte ReadGlobalPwrPolicy(
    IntPtr pGlobalPowerPolicy   // GLOBAL_POWER_POLICY*
);

<DllImport("POWRPROF.dll", SetLastError:=True, ExactSpelling:=True)>
Public Shared Function ReadGlobalPwrPolicy(
    pGlobalPowerPolicy As IntPtr   ' GLOBAL_POWER_POLICY*
) As Byte
End Function

' pGlobalPowerPolicy : GLOBAL_POWER_POLICY*
Declare PtrSafe Function ReadGlobalPwrPolicy Lib "powrprof" ( _
    ByVal pGlobalPowerPolicy As LongPtr) As Byte
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

ReadGlobalPwrPolicy = ctypes.windll.powrprof.ReadGlobalPwrPolicy
ReadGlobalPwrPolicy.restype = ctypes.c_byte
ReadGlobalPwrPolicy.argtypes = [
    ctypes.c_void_p,  # pGlobalPowerPolicy : GLOBAL_POWER_POLICY*
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('POWRPROF.dll')
ReadGlobalPwrPolicy = Fiddle::Function.new(
  lib['ReadGlobalPwrPolicy'],
  [
    Fiddle::TYPE_VOIDP,  # pGlobalPowerPolicy : GLOBAL_POWER_POLICY*
  ],
  Fiddle::TYPE_CHAR)

#[link(name = "powrprof")]
extern "system" {
    fn ReadGlobalPwrPolicy(
        pGlobalPowerPolicy: *mut GLOBAL_POWER_POLICY  // GLOBAL_POWER_POLICY*
    ) -> u8;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("POWRPROF.dll", SetLastError = true)]
public static extern byte ReadGlobalPwrPolicy(IntPtr pGlobalPowerPolicy);
"@
$api = Add-Type -MemberDefinition $sig -Name 'POWRPROF_ReadGlobalPwrPolicy' -Namespace Win32 -PassThru
# $api::ReadGlobalPwrPolicy(pGlobalPowerPolicy)

#uselib "POWRPROF.dll"
#func global ReadGlobalPwrPolicy "ReadGlobalPwrPolicy" sptr
; ReadGlobalPwrPolicy varptr(pGlobalPowerPolicy)   ; 戻り値は stat
; pGlobalPowerPolicy : GLOBAL_POWER_POLICY* -> "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 "POWRPROF.dll"
#cfunc global ReadGlobalPwrPolicy "ReadGlobalPwrPolicy" var
; res = ReadGlobalPwrPolicy(pGlobalPowerPolicy)
; pGlobalPowerPolicy : GLOBAL_POWER_POLICY* -> "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 "POWRPROF.dll"
#cfunc global ReadGlobalPwrPolicy "ReadGlobalPwrPolicy" sptr
; res = ReadGlobalPwrPolicy(varptr(pGlobalPowerPolicy))
; pGlobalPowerPolicy : GLOBAL_POWER_POLICY* -> "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:

; BOOLEAN ReadGlobalPwrPolicy(GLOBAL_POWER_POLICY* pGlobalPowerPolicy)
#uselib "POWRPROF.dll"
#cfunc global ReadGlobalPwrPolicy "ReadGlobalPwrPolicy" var
; res = ReadGlobalPwrPolicy(pGlobalPowerPolicy)
; pGlobalPowerPolicy : GLOBAL_POWER_POLICY* -> "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。; BOOLEAN ReadGlobalPwrPolicy(GLOBAL_POWER_POLICY* pGlobalPowerPolicy)
#uselib "POWRPROF.dll"
#cfunc global ReadGlobalPwrPolicy "ReadGlobalPwrPolicy" intptr
; res = ReadGlobalPwrPolicy(varptr(pGlobalPowerPolicy))
; pGlobalPowerPolicy : GLOBAL_POWER_POLICY* -> "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 (
	powrprof = windows.NewLazySystemDLL("POWRPROF.dll")
	procReadGlobalPwrPolicy = powrprof.NewProc("ReadGlobalPwrPolicy")
)

// pGlobalPowerPolicy (GLOBAL_POWER_POLICY*)
r1, _, err := procReadGlobalPwrPolicy.Call(
	uintptr(pGlobalPowerPolicy),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOLEAN

function ReadGlobalPwrPolicy(
  pGlobalPowerPolicy: Pointer   // GLOBAL_POWER_POLICY*
): ByteBool; stdcall;
  external 'POWRPROF.dll' name 'ReadGlobalPwrPolicy';

result := DllCall("POWRPROF\ReadGlobalPwrPolicy"
    , "Ptr", pGlobalPowerPolicy   ; GLOBAL_POWER_POLICY*
    , "Char")   ; return: BOOLEAN

●ReadGlobalPwrPolicy(pGlobalPowerPolicy) = DLL("POWRPROF.dll", "byte ReadGlobalPwrPolicy(void*)")
# 呼び出し: ReadGlobalPwrPolicy(pGlobalPowerPolicy)
# pGlobalPowerPolicy : GLOBAL_POWER_POLICY* -> "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)。