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GetNumberOfPhysicalMonitorsFromHMONITOR

関数

HMONITORに関連付く物理モニタの数を取得する。

DLLdxva2.dll呼出規約winapiSetLastErrorあり対応OSWindows Vista 以降

シグネチャ

// dxva2.dll
#include <windows.h>

BOOL GetNumberOfPhysicalMonitorsFromHMONITOR(
    HMONITOR hMonitor,
    DWORD* pdwNumberOfPhysicalMonitors
);

パラメーター

名前	型	方向
hMonitor	HMONITOR	in
pdwNumberOfPhysicalMonitors	DWORD*	out

戻り値の型: BOOL

各言語での呼び出し定義

// dxva2.dll
#include <windows.h>

BOOL GetNumberOfPhysicalMonitorsFromHMONITOR(
    HMONITOR hMonitor,
    DWORD* pdwNumberOfPhysicalMonitors
);

[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("dxva2.dll", SetLastError = true, ExactSpelling = true)]
static extern bool GetNumberOfPhysicalMonitorsFromHMONITOR(
    IntPtr hMonitor,   // HMONITOR
    out uint pdwNumberOfPhysicalMonitors   // DWORD* out
);

<DllImport("dxva2.dll", SetLastError:=True, ExactSpelling:=True)>
Public Shared Function GetNumberOfPhysicalMonitorsFromHMONITOR(
    hMonitor As IntPtr,   ' HMONITOR
    <Out> ByRef pdwNumberOfPhysicalMonitors As UInteger   ' DWORD* out
) As Boolean
End Function

' hMonitor : HMONITOR
' pdwNumberOfPhysicalMonitors : DWORD* out
Declare PtrSafe Function GetNumberOfPhysicalMonitorsFromHMONITOR Lib "dxva2" ( _
    ByVal hMonitor As LongPtr, _
    ByRef pdwNumberOfPhysicalMonitors 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

GetNumberOfPhysicalMonitorsFromHMONITOR = ctypes.windll.dxva2.GetNumberOfPhysicalMonitorsFromHMONITOR
GetNumberOfPhysicalMonitorsFromHMONITOR.restype = wintypes.BOOL
GetNumberOfPhysicalMonitorsFromHMONITOR.argtypes = [
    wintypes.HANDLE,  # hMonitor : HMONITOR
    ctypes.POINTER(wintypes.DWORD),  # pdwNumberOfPhysicalMonitors : DWORD* out
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('dxva2.dll')
GetNumberOfPhysicalMonitorsFromHMONITOR = Fiddle::Function.new(
  lib['GetNumberOfPhysicalMonitorsFromHMONITOR'],
  [
    Fiddle::TYPE_VOIDP,  # hMonitor : HMONITOR
    Fiddle::TYPE_VOIDP,  # pdwNumberOfPhysicalMonitors : DWORD* out
  ],
  Fiddle::TYPE_INT)

#[link(name = "dxva2")]
extern "system" {
    fn GetNumberOfPhysicalMonitorsFromHMONITOR(
        hMonitor: *mut core::ffi::c_void,  // HMONITOR
        pdwNumberOfPhysicalMonitors: *mut u32  // DWORD* out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("dxva2.dll", SetLastError = true)]
public static extern bool GetNumberOfPhysicalMonitorsFromHMONITOR(IntPtr hMonitor, out uint pdwNumberOfPhysicalMonitors);
"@
$api = Add-Type -MemberDefinition $sig -Name 'dxva2_GetNumberOfPhysicalMonitorsFromHMONITOR' -Namespace Win32 -PassThru
# $api::GetNumberOfPhysicalMonitorsFromHMONITOR(hMonitor, pdwNumberOfPhysicalMonitors)

#uselib "dxva2.dll"
#func global GetNumberOfPhysicalMonitorsFromHMONITOR "GetNumberOfPhysicalMonitorsFromHMONITOR" sptr, sptr
; GetNumberOfPhysicalMonitorsFromHMONITOR hMonitor, varptr(pdwNumberOfPhysicalMonitors)   ; 戻り値は stat
; hMonitor : HMONITOR -> "sptr"
; pdwNumberOfPhysicalMonitors : DWORD* 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 "dxva2.dll"
#cfunc global GetNumberOfPhysicalMonitorsFromHMONITOR "GetNumberOfPhysicalMonitorsFromHMONITOR" sptr, var
; res = GetNumberOfPhysicalMonitorsFromHMONITOR(hMonitor, pdwNumberOfPhysicalMonitors)
; hMonitor : HMONITOR -> "sptr"
; pdwNumberOfPhysicalMonitors : DWORD* 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 "dxva2.dll"
#cfunc global GetNumberOfPhysicalMonitorsFromHMONITOR "GetNumberOfPhysicalMonitorsFromHMONITOR" sptr, sptr
; res = GetNumberOfPhysicalMonitorsFromHMONITOR(hMonitor, varptr(pdwNumberOfPhysicalMonitors))
; hMonitor : HMONITOR -> "sptr"
; pdwNumberOfPhysicalMonitors : DWORD* 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:

; BOOL GetNumberOfPhysicalMonitorsFromHMONITOR(HMONITOR hMonitor, DWORD* pdwNumberOfPhysicalMonitors)
#uselib "dxva2.dll"
#cfunc global GetNumberOfPhysicalMonitorsFromHMONITOR "GetNumberOfPhysicalMonitorsFromHMONITOR" intptr, var
; res = GetNumberOfPhysicalMonitorsFromHMONITOR(hMonitor, pdwNumberOfPhysicalMonitors)
; hMonitor : HMONITOR -> "intptr"
; pdwNumberOfPhysicalMonitors : DWORD* 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。; BOOL GetNumberOfPhysicalMonitorsFromHMONITOR(HMONITOR hMonitor, DWORD* pdwNumberOfPhysicalMonitors)
#uselib "dxva2.dll"
#cfunc global GetNumberOfPhysicalMonitorsFromHMONITOR "GetNumberOfPhysicalMonitorsFromHMONITOR" intptr, intptr
; res = GetNumberOfPhysicalMonitorsFromHMONITOR(hMonitor, varptr(pdwNumberOfPhysicalMonitors))
; hMonitor : HMONITOR -> "intptr"
; pdwNumberOfPhysicalMonitors : DWORD* 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 (
	dxva2 = windows.NewLazySystemDLL("dxva2.dll")
	procGetNumberOfPhysicalMonitorsFromHMONITOR = dxva2.NewProc("GetNumberOfPhysicalMonitorsFromHMONITOR")
)

// hMonitor (HMONITOR), pdwNumberOfPhysicalMonitors (DWORD* out)
r1, _, err := procGetNumberOfPhysicalMonitorsFromHMONITOR.Call(
	uintptr(hMonitor),
	uintptr(pdwNumberOfPhysicalMonitors),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function GetNumberOfPhysicalMonitorsFromHMONITOR(
  hMonitor: THandle;   // HMONITOR
  pdwNumberOfPhysicalMonitors: Pointer   // DWORD* out
): BOOL; stdcall;
  external 'dxva2.dll' name 'GetNumberOfPhysicalMonitorsFromHMONITOR';

result := DllCall("dxva2\GetNumberOfPhysicalMonitorsFromHMONITOR"
    , "Ptr", hMonitor   ; HMONITOR
    , "Ptr", pdwNumberOfPhysicalMonitors   ; DWORD* out
    , "Int")   ; return: BOOL

●GetNumberOfPhysicalMonitorsFromHMONITOR(hMonitor, pdwNumberOfPhysicalMonitors) = DLL("dxva2.dll", "bool GetNumberOfPhysicalMonitorsFromHMONITOR(void*, void*)")
# 呼び出し: GetNumberOfPhysicalMonitorsFromHMONITOR(hMonitor, pdwNumberOfPhysicalMonitors)
# hMonitor : HMONITOR -> "void*"
# pdwNumberOfPhysicalMonitors : DWORD* 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)。