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ReadProcessorPwrScheme

関数

指定スキームのプロセッサ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 ReadProcessorPwrScheme(
    DWORD uiID,
    MACHINE_PROCESSOR_POWER_POLICY* pMachineProcessorPowerPolicy
);

パラメーター

名前	型	方向
uiID	DWORD	in
pMachineProcessorPowerPolicy	MACHINE_PROCESSOR_POWER_POLICY*	out

戻り値の型: BOOLEAN

各言語での呼び出し定義

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

BOOLEAN ReadProcessorPwrScheme(
    DWORD uiID,
    MACHINE_PROCESSOR_POWER_POLICY* pMachineProcessorPowerPolicy
);

[DllImport("POWRPROF.dll", SetLastError = true, ExactSpelling = true)]
static extern byte ReadProcessorPwrScheme(
    uint uiID,   // DWORD
    IntPtr pMachineProcessorPowerPolicy   // MACHINE_PROCESSOR_POWER_POLICY* out
);

<DllImport("POWRPROF.dll", SetLastError:=True, ExactSpelling:=True)>
Public Shared Function ReadProcessorPwrScheme(
    uiID As UInteger,   ' DWORD
    pMachineProcessorPowerPolicy As IntPtr   ' MACHINE_PROCESSOR_POWER_POLICY* out
) As Byte
End Function

' uiID : DWORD
' pMachineProcessorPowerPolicy : MACHINE_PROCESSOR_POWER_POLICY* out
Declare PtrSafe Function ReadProcessorPwrScheme Lib "powrprof" ( _
    ByVal uiID As Long, _
    ByVal pMachineProcessorPowerPolicy 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

ReadProcessorPwrScheme = ctypes.windll.powrprof.ReadProcessorPwrScheme
ReadProcessorPwrScheme.restype = ctypes.c_byte
ReadProcessorPwrScheme.argtypes = [
    wintypes.DWORD,  # uiID : DWORD
    ctypes.c_void_p,  # pMachineProcessorPowerPolicy : MACHINE_PROCESSOR_POWER_POLICY* out
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('POWRPROF.dll')
ReadProcessorPwrScheme = Fiddle::Function.new(
  lib['ReadProcessorPwrScheme'],
  [
    -Fiddle::TYPE_INT,  # uiID : DWORD
    Fiddle::TYPE_VOIDP,  # pMachineProcessorPowerPolicy : MACHINE_PROCESSOR_POWER_POLICY* out
  ],
  Fiddle::TYPE_CHAR)

#[link(name = "powrprof")]
extern "system" {
    fn ReadProcessorPwrScheme(
        uiID: u32,  // DWORD
        pMachineProcessorPowerPolicy: *mut MACHINE_PROCESSOR_POWER_POLICY  // MACHINE_PROCESSOR_POWER_POLICY* out
    ) -> u8;
}
// crates: windows-sys provides ready-made bindings for this API.

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

#uselib "POWRPROF.dll"
#func global ReadProcessorPwrScheme "ReadProcessorPwrScheme" sptr, sptr
; ReadProcessorPwrScheme uiID, varptr(pMachineProcessorPowerPolicy)   ; 戻り値は stat
; uiID : DWORD -> "sptr"
; pMachineProcessorPowerPolicy : MACHINE_PROCESSOR_POWER_POLICY* 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。

出力引数:

#uselib "POWRPROF.dll"
#cfunc global ReadProcessorPwrScheme "ReadProcessorPwrScheme" int, var
; res = ReadProcessorPwrScheme(uiID, pMachineProcessorPowerPolicy)
; uiID : DWORD -> "int"
; pMachineProcessorPowerPolicy : MACHINE_PROCESSOR_POWER_POLICY* 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。#uselib "POWRPROF.dll"
#cfunc global ReadProcessorPwrScheme "ReadProcessorPwrScheme" int, sptr
; res = ReadProcessorPwrScheme(uiID, varptr(pMachineProcessorPowerPolicy))
; uiID : DWORD -> "int"
; pMachineProcessorPowerPolicy : MACHINE_PROCESSOR_POWER_POLICY* out -> "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 ReadProcessorPwrScheme(DWORD uiID, MACHINE_PROCESSOR_POWER_POLICY* pMachineProcessorPowerPolicy)
#uselib "POWRPROF.dll"
#cfunc global ReadProcessorPwrScheme "ReadProcessorPwrScheme" int, var
; res = ReadProcessorPwrScheme(uiID, pMachineProcessorPowerPolicy)
; uiID : DWORD -> "int"
; pMachineProcessorPowerPolicy : MACHINE_PROCESSOR_POWER_POLICY* 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。; BOOLEAN ReadProcessorPwrScheme(DWORD uiID, MACHINE_PROCESSOR_POWER_POLICY* pMachineProcessorPowerPolicy)
#uselib "POWRPROF.dll"
#cfunc global ReadProcessorPwrScheme "ReadProcessorPwrScheme" int, intptr
; res = ReadProcessorPwrScheme(uiID, varptr(pMachineProcessorPowerPolicy))
; uiID : DWORD -> "int"
; pMachineProcessorPowerPolicy : MACHINE_PROCESSOR_POWER_POLICY* out -> "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")
	procReadProcessorPwrScheme = powrprof.NewProc("ReadProcessorPwrScheme")
)

// uiID (DWORD), pMachineProcessorPowerPolicy (MACHINE_PROCESSOR_POWER_POLICY* out)
r1, _, err := procReadProcessorPwrScheme.Call(
	uintptr(uiID),
	uintptr(pMachineProcessorPowerPolicy),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOLEAN

function ReadProcessorPwrScheme(
  uiID: DWORD;   // DWORD
  pMachineProcessorPowerPolicy: Pointer   // MACHINE_PROCESSOR_POWER_POLICY* out
): ByteBool; stdcall;
  external 'POWRPROF.dll' name 'ReadProcessorPwrScheme';

result := DllCall("POWRPROF\ReadProcessorPwrScheme"
    , "UInt", uiID   ; DWORD
    , "Ptr", pMachineProcessorPowerPolicy   ; MACHINE_PROCESSOR_POWER_POLICY* out
    , "Char")   ; return: BOOLEAN

●ReadProcessorPwrScheme(uiID, pMachineProcessorPowerPolicy) = DLL("POWRPROF.dll", "byte ReadProcessorPwrScheme(dword, void*)")
# 呼び出し: ReadProcessorPwrScheme(uiID, pMachineProcessorPowerPolicy)
# uiID : DWORD -> "dword"
# pMachineProcessorPowerPolicy : MACHINE_PROCESSOR_POWER_POLICY* 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)。