GetPwrCapabilities

関数

システムの電源管理機能の対応状況を取得する。

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 GetPwrCapabilities(
    SYSTEM_POWER_CAPABILITIES* lpspc
);

パラメーター

名前	型	方向
lpspc	SYSTEM_POWER_CAPABILITIES*	out

戻り値の型: BOOLEAN

各言語での呼び出し定義

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

BOOLEAN GetPwrCapabilities(
    SYSTEM_POWER_CAPABILITIES* lpspc
);

[DllImport("POWRPROF.dll", SetLastError = true, ExactSpelling = true)]
static extern byte GetPwrCapabilities(
    IntPtr lpspc   // SYSTEM_POWER_CAPABILITIES* out
);

<DllImport("POWRPROF.dll", SetLastError:=True, ExactSpelling:=True)>
Public Shared Function GetPwrCapabilities(
    lpspc As IntPtr   ' SYSTEM_POWER_CAPABILITIES* out
) As Byte
End Function

' lpspc : SYSTEM_POWER_CAPABILITIES* out
Declare PtrSafe Function GetPwrCapabilities Lib "powrprof" ( _
    ByVal lpspc 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

GetPwrCapabilities = ctypes.windll.powrprof.GetPwrCapabilities
GetPwrCapabilities.restype = ctypes.c_byte
GetPwrCapabilities.argtypes = [
    ctypes.c_void_p,  # lpspc : SYSTEM_POWER_CAPABILITIES* out
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('POWRPROF.dll')
GetPwrCapabilities = Fiddle::Function.new(
  lib['GetPwrCapabilities'],
  [
    Fiddle::TYPE_VOIDP,  # lpspc : SYSTEM_POWER_CAPABILITIES* out
  ],
  Fiddle::TYPE_CHAR)

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

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

#uselib "POWRPROF.dll"
#func global GetPwrCapabilities "GetPwrCapabilities" sptr
; GetPwrCapabilities varptr(lpspc)   ; 戻り値は stat
; lpspc : SYSTEM_POWER_CAPABILITIES* 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 GetPwrCapabilities "GetPwrCapabilities" var
; res = GetPwrCapabilities(lpspc)
; lpspc : SYSTEM_POWER_CAPABILITIES* 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 GetPwrCapabilities "GetPwrCapabilities" sptr
; res = GetPwrCapabilities(varptr(lpspc))
; lpspc : SYSTEM_POWER_CAPABILITIES* 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 GetPwrCapabilities(SYSTEM_POWER_CAPABILITIES* lpspc)
#uselib "POWRPROF.dll"
#cfunc global GetPwrCapabilities "GetPwrCapabilities" var
; res = GetPwrCapabilities(lpspc)
; lpspc : SYSTEM_POWER_CAPABILITIES* 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 GetPwrCapabilities(SYSTEM_POWER_CAPABILITIES* lpspc)
#uselib "POWRPROF.dll"
#cfunc global GetPwrCapabilities "GetPwrCapabilities" intptr
; res = GetPwrCapabilities(varptr(lpspc))
; lpspc : SYSTEM_POWER_CAPABILITIES* 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")
	procGetPwrCapabilities = powrprof.NewProc("GetPwrCapabilities")
)

// lpspc (SYSTEM_POWER_CAPABILITIES* out)
r1, _, err := procGetPwrCapabilities.Call(
	uintptr(lpspc),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOLEAN

function GetPwrCapabilities(
  lpspc: Pointer   // SYSTEM_POWER_CAPABILITIES* out
): ByteBool; stdcall;
  external 'POWRPROF.dll' name 'GetPwrCapabilities';

result := DllCall("POWRPROF\GetPwrCapabilities"
    , "Ptr", lpspc   ; SYSTEM_POWER_CAPABILITIES* out
    , "Char")   ; return: BOOLEAN

●GetPwrCapabilities(lpspc) = DLL("POWRPROF.dll", "byte GetPwrCapabilities(void*)")
# 呼び出し: GetPwrCapabilities(lpspc)
# lpspc : SYSTEM_POWER_CAPABILITIES* 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)。