EnumPwrSchemes

関数

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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 EnumPwrSchemes(
    PWRSCHEMESENUMPROC lpfn,
    LPARAM lParam
);

パラメーター

名前	型	方向
lpfn	PWRSCHEMESENUMPROC	in
lParam	LPARAM	in

戻り値の型: BOOLEAN

各言語での呼び出し定義

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

BOOLEAN EnumPwrSchemes(
    PWRSCHEMESENUMPROC lpfn,
    LPARAM lParam
);

[DllImport("POWRPROF.dll", SetLastError = true, ExactSpelling = true)]
static extern byte EnumPwrSchemes(
    IntPtr lpfn,   // PWRSCHEMESENUMPROC
    IntPtr lParam   // LPARAM
);

<DllImport("POWRPROF.dll", SetLastError:=True, ExactSpelling:=True)>
Public Shared Function EnumPwrSchemes(
    lpfn As IntPtr,   ' PWRSCHEMESENUMPROC
    lParam As IntPtr   ' LPARAM
) As Byte
End Function

' lpfn : PWRSCHEMESENUMPROC
' lParam : LPARAM
Declare PtrSafe Function EnumPwrSchemes Lib "powrprof" ( _
    ByVal lpfn As LongPtr, _
    ByVal lParam 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

EnumPwrSchemes = ctypes.windll.powrprof.EnumPwrSchemes
EnumPwrSchemes.restype = ctypes.c_byte
EnumPwrSchemes.argtypes = [
    ctypes.c_void_p,  # lpfn : PWRSCHEMESENUMPROC
    ctypes.c_ssize_t,  # lParam : LPARAM
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('POWRPROF.dll')
EnumPwrSchemes = Fiddle::Function.new(
  lib['EnumPwrSchemes'],
  [
    Fiddle::TYPE_VOIDP,  # lpfn : PWRSCHEMESENUMPROC
    Fiddle::TYPE_INTPTR_T,  # lParam : LPARAM
  ],
  Fiddle::TYPE_CHAR)

#[link(name = "powrprof")]
extern "system" {
    fn EnumPwrSchemes(
        lpfn: *const core::ffi::c_void,  // PWRSCHEMESENUMPROC
        lParam: isize  // LPARAM
    ) -> u8;
}
// crates: windows-sys provides ready-made bindings for this API.

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

#uselib "POWRPROF.dll"
#func global EnumPwrSchemes "EnumPwrSchemes" sptr, sptr
; EnumPwrSchemes lpfn, lParam   ; 戻り値は stat
; lpfn : PWRSCHEMESENUMPROC -> "sptr"
; lParam : LPARAM -> "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 "POWRPROF.dll"
#cfunc global EnumPwrSchemes "EnumPwrSchemes" sptr, sptr
; res = EnumPwrSchemes(lpfn, lParam)
; lpfn : PWRSCHEMESENUMPROC -> "sptr"
; lParam : LPARAM -> "sptr"

; BOOLEAN EnumPwrSchemes(PWRSCHEMESENUMPROC lpfn, LPARAM lParam)
#uselib "POWRPROF.dll"
#cfunc global EnumPwrSchemes "EnumPwrSchemes" intptr, intptr
; res = EnumPwrSchemes(lpfn, lParam)
; lpfn : PWRSCHEMESENUMPROC -> "intptr"
; lParam : LPARAM -> "intptr"

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

var (
	powrprof = windows.NewLazySystemDLL("POWRPROF.dll")
	procEnumPwrSchemes = powrprof.NewProc("EnumPwrSchemes")
)

// lpfn (PWRSCHEMESENUMPROC), lParam (LPARAM)
r1, _, err := procEnumPwrSchemes.Call(
	uintptr(lpfn),
	uintptr(lParam),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOLEAN

function EnumPwrSchemes(
  lpfn: Pointer;   // PWRSCHEMESENUMPROC
  lParam: NativeInt   // LPARAM
): ByteBool; stdcall;
  external 'POWRPROF.dll' name 'EnumPwrSchemes';

result := DllCall("POWRPROF\EnumPwrSchemes"
    , "Ptr", lpfn   ; PWRSCHEMESENUMPROC
    , "Ptr", lParam   ; LPARAM
    , "Char")   ; return: BOOLEAN

●EnumPwrSchemes(lpfn, lParam) = DLL("POWRPROF.dll", "byte EnumPwrSchemes(void*, int)")
# 呼び出し: EnumPwrSchemes(lpfn, lParam)
# lpfn : PWRSCHEMESENUMPROC -> "void*"
# lParam : LPARAM -> "int"
# 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)。