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SHIsLowMemoryMachine

関数

低メモリ環境のマシンであるかどうかを判定する。

DLLSHLWAPI.dll呼出規約winapi対応OSWindows XP 以降

シグネチャ

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

BOOL SHIsLowMemoryMachine(
    DWORD dwType
);

パラメーター

名前	型	方向
dwType	DWORD	in

戻り値の型: BOOL

各言語での呼び出し定義

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

BOOL SHIsLowMemoryMachine(
    DWORD dwType
);

[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("SHLWAPI.dll", ExactSpelling = true)]
static extern bool SHIsLowMemoryMachine(
    uint dwType   // DWORD
);

<DllImport("SHLWAPI.dll", ExactSpelling:=True)>
Public Shared Function SHIsLowMemoryMachine(
    dwType As UInteger   ' DWORD
) As Boolean
End Function

' dwType : DWORD
Declare PtrSafe Function SHIsLowMemoryMachine Lib "shlwapi" ( _
    ByVal dwType 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

SHIsLowMemoryMachine = ctypes.windll.shlwapi.SHIsLowMemoryMachine
SHIsLowMemoryMachine.restype = wintypes.BOOL
SHIsLowMemoryMachine.argtypes = [
    wintypes.DWORD,  # dwType : DWORD
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('SHLWAPI.dll')
SHIsLowMemoryMachine = Fiddle::Function.new(
  lib['SHIsLowMemoryMachine'],
  [
    -Fiddle::TYPE_INT,  # dwType : DWORD
  ],
  Fiddle::TYPE_INT)

#[link(name = "shlwapi")]
extern "system" {
    fn SHIsLowMemoryMachine(
        dwType: u32  // DWORD
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("SHLWAPI.dll")]
public static extern bool SHIsLowMemoryMachine(uint dwType);
"@
$api = Add-Type -MemberDefinition $sig -Name 'SHLWAPI_SHIsLowMemoryMachine' -Namespace Win32 -PassThru
# $api::SHIsLowMemoryMachine(dwType)

#uselib "SHLWAPI.dll"
#func global SHIsLowMemoryMachine "SHIsLowMemoryMachine" sptr
; SHIsLowMemoryMachine dwType   ; 戻り値は stat
; dwType : DWORD -> "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 "SHLWAPI.dll"
#cfunc global SHIsLowMemoryMachine "SHIsLowMemoryMachine" int
; res = SHIsLowMemoryMachine(dwType)
; dwType : DWORD -> "int"

; BOOL SHIsLowMemoryMachine(DWORD dwType)
#uselib "SHLWAPI.dll"
#cfunc global SHIsLowMemoryMachine "SHIsLowMemoryMachine" int
; res = SHIsLowMemoryMachine(dwType)
; dwType : DWORD -> "int"

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

var (
	shlwapi = windows.NewLazySystemDLL("SHLWAPI.dll")
	procSHIsLowMemoryMachine = shlwapi.NewProc("SHIsLowMemoryMachine")
)

// dwType (DWORD)
r1, _, err := procSHIsLowMemoryMachine.Call(
	uintptr(dwType),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function SHIsLowMemoryMachine(
  dwType: DWORD   // DWORD
): BOOL; stdcall;
  external 'SHLWAPI.dll' name 'SHIsLowMemoryMachine';

result := DllCall("SHLWAPI\SHIsLowMemoryMachine"
    , "UInt", dwType   ; DWORD
    , "Int")   ; return: BOOL

●SHIsLowMemoryMachine(dwType) = DLL("SHLWAPI.dll", "bool SHIsLowMemoryMachine(dword)")
# 呼び出し: SHIsLowMemoryMachine(dwType)
# dwType : DWORD -> "dword"
# 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)。