DwmEnableMMCSS

関数

DWMのマルチメディアクラススケジューラ利用を有効化する。

DLLdwmapi.dll呼出規約winapi対応OSWindows Vista 以降

シグネチャ

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

HRESULT DwmEnableMMCSS(
    BOOL fEnableMMCSS
);

パラメーター

名前	型	方向
fEnableMMCSS	BOOL	in

戻り値の型: HRESULT

各言語での呼び出し定義

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

HRESULT DwmEnableMMCSS(
    BOOL fEnableMMCSS
);

[DllImport("dwmapi.dll", ExactSpelling = true)]
static extern int DwmEnableMMCSS(
    bool fEnableMMCSS   // BOOL
);

<DllImport("dwmapi.dll", ExactSpelling:=True)>
Public Shared Function DwmEnableMMCSS(
    fEnableMMCSS As Boolean   ' BOOL
) As Integer
End Function

' fEnableMMCSS : BOOL
Declare PtrSafe Function DwmEnableMMCSS Lib "dwmapi" ( _
    ByVal fEnableMMCSS As Long) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

DwmEnableMMCSS = ctypes.windll.dwmapi.DwmEnableMMCSS
DwmEnableMMCSS.restype = ctypes.c_int
DwmEnableMMCSS.argtypes = [
    wintypes.BOOL,  # fEnableMMCSS : BOOL
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('dwmapi.dll')
DwmEnableMMCSS = Fiddle::Function.new(
  lib['DwmEnableMMCSS'],
  [
    Fiddle::TYPE_INT,  # fEnableMMCSS : BOOL
  ],
  Fiddle::TYPE_INT)

#[link(name = "dwmapi")]
extern "system" {
    fn DwmEnableMMCSS(
        fEnableMMCSS: i32  // BOOL
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("dwmapi.dll")]
public static extern int DwmEnableMMCSS(bool fEnableMMCSS);
"@
$api = Add-Type -MemberDefinition $sig -Name 'dwmapi_DwmEnableMMCSS' -Namespace Win32 -PassThru
# $api::DwmEnableMMCSS(fEnableMMCSS)

#uselib "dwmapi.dll"
#func global DwmEnableMMCSS "DwmEnableMMCSS" sptr
; DwmEnableMMCSS fEnableMMCSS   ; 戻り値は stat
; fEnableMMCSS : BOOL -> "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 "dwmapi.dll"
#cfunc global DwmEnableMMCSS "DwmEnableMMCSS" int
; res = DwmEnableMMCSS(fEnableMMCSS)
; fEnableMMCSS : BOOL -> "int"

; HRESULT DwmEnableMMCSS(BOOL fEnableMMCSS)
#uselib "dwmapi.dll"
#cfunc global DwmEnableMMCSS "DwmEnableMMCSS" int
; res = DwmEnableMMCSS(fEnableMMCSS)
; fEnableMMCSS : BOOL -> "int"

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

var (
	dwmapi = windows.NewLazySystemDLL("dwmapi.dll")
	procDwmEnableMMCSS = dwmapi.NewProc("DwmEnableMMCSS")
)

// fEnableMMCSS (BOOL)
r1, _, err := procDwmEnableMMCSS.Call(
	uintptr(fEnableMMCSS),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function DwmEnableMMCSS(
  fEnableMMCSS: BOOL   // BOOL
): Integer; stdcall;
  external 'dwmapi.dll' name 'DwmEnableMMCSS';

result := DllCall("dwmapi\DwmEnableMMCSS"
    , "Int", fEnableMMCSS   ; BOOL
    , "Int")   ; return: HRESULT

●DwmEnableMMCSS(fEnableMMCSS) = DLL("dwmapi.dll", "int DwmEnableMMCSS(bool)")
# 呼び出し: DwmEnableMMCSS(fEnableMMCSS)
# fEnableMMCSS : BOOL -> "bool"
# 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)。