ホーム › System.Console › GetNumberOfConsoleInputEvents

GetNumberOfConsoleInputEvents

関数

コンソール入力バッファ内の未読イベント数を取得する。

DLLKERNEL32.dll呼出規約winapiSetLastErrorあり

シグネチャ

// KERNEL32.dll
#include <windows.h>

BOOL GetNumberOfConsoleInputEvents(
    HANDLE hConsoleInput,
    DWORD* lpNumberOfEvents
);

パラメーター

名前	型	方向
hConsoleInput	HANDLE	in
lpNumberOfEvents	DWORD*	out

戻り値の型: BOOL

各言語での呼び出し定義

// KERNEL32.dll
#include <windows.h>

BOOL GetNumberOfConsoleInputEvents(
    HANDLE hConsoleInput,
    DWORD* lpNumberOfEvents
);

[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("KERNEL32.dll", SetLastError = true, ExactSpelling = true)]
static extern bool GetNumberOfConsoleInputEvents(
    IntPtr hConsoleInput,   // HANDLE
    out uint lpNumberOfEvents   // DWORD* out
);

<DllImport("KERNEL32.dll", SetLastError:=True, ExactSpelling:=True)>
Public Shared Function GetNumberOfConsoleInputEvents(
    hConsoleInput As IntPtr,   ' HANDLE
    <Out> ByRef lpNumberOfEvents As UInteger   ' DWORD* out
) As Boolean
End Function

' hConsoleInput : HANDLE
' lpNumberOfEvents : DWORD* out
Declare PtrSafe Function GetNumberOfConsoleInputEvents Lib "kernel32" ( _
    ByVal hConsoleInput As LongPtr, _
    ByRef lpNumberOfEvents 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

GetNumberOfConsoleInputEvents = ctypes.windll.kernel32.GetNumberOfConsoleInputEvents
GetNumberOfConsoleInputEvents.restype = wintypes.BOOL
GetNumberOfConsoleInputEvents.argtypes = [
    wintypes.HANDLE,  # hConsoleInput : HANDLE
    ctypes.POINTER(wintypes.DWORD),  # lpNumberOfEvents : DWORD* out
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('KERNEL32.dll')
GetNumberOfConsoleInputEvents = Fiddle::Function.new(
  lib['GetNumberOfConsoleInputEvents'],
  [
    Fiddle::TYPE_VOIDP,  # hConsoleInput : HANDLE
    Fiddle::TYPE_VOIDP,  # lpNumberOfEvents : DWORD* out
  ],
  Fiddle::TYPE_INT)

#[link(name = "kernel32")]
extern "system" {
    fn GetNumberOfConsoleInputEvents(
        hConsoleInput: *mut core::ffi::c_void,  // HANDLE
        lpNumberOfEvents: *mut u32  // DWORD* out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("KERNEL32.dll", SetLastError = true)]
public static extern bool GetNumberOfConsoleInputEvents(IntPtr hConsoleInput, out uint lpNumberOfEvents);
"@
$api = Add-Type -MemberDefinition $sig -Name 'KERNEL32_GetNumberOfConsoleInputEvents' -Namespace Win32 -PassThru
# $api::GetNumberOfConsoleInputEvents(hConsoleInput, lpNumberOfEvents)

#uselib "KERNEL32.dll"
#func global GetNumberOfConsoleInputEvents "GetNumberOfConsoleInputEvents" sptr, sptr
; GetNumberOfConsoleInputEvents hConsoleInput, varptr(lpNumberOfEvents)   ; 戻り値は stat
; hConsoleInput : HANDLE -> "sptr"
; lpNumberOfEvents : 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 "KERNEL32.dll"
#cfunc global GetNumberOfConsoleInputEvents "GetNumberOfConsoleInputEvents" sptr, var
; res = GetNumberOfConsoleInputEvents(hConsoleInput, lpNumberOfEvents)
; hConsoleInput : HANDLE -> "sptr"
; lpNumberOfEvents : 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 "KERNEL32.dll"
#cfunc global GetNumberOfConsoleInputEvents "GetNumberOfConsoleInputEvents" sptr, sptr
; res = GetNumberOfConsoleInputEvents(hConsoleInput, varptr(lpNumberOfEvents))
; hConsoleInput : HANDLE -> "sptr"
; lpNumberOfEvents : 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 GetNumberOfConsoleInputEvents(HANDLE hConsoleInput, DWORD* lpNumberOfEvents)
#uselib "KERNEL32.dll"
#cfunc global GetNumberOfConsoleInputEvents "GetNumberOfConsoleInputEvents" intptr, var
; res = GetNumberOfConsoleInputEvents(hConsoleInput, lpNumberOfEvents)
; hConsoleInput : HANDLE -> "intptr"
; lpNumberOfEvents : 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 GetNumberOfConsoleInputEvents(HANDLE hConsoleInput, DWORD* lpNumberOfEvents)
#uselib "KERNEL32.dll"
#cfunc global GetNumberOfConsoleInputEvents "GetNumberOfConsoleInputEvents" intptr, intptr
; res = GetNumberOfConsoleInputEvents(hConsoleInput, varptr(lpNumberOfEvents))
; hConsoleInput : HANDLE -> "intptr"
; lpNumberOfEvents : 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 (
	kernel32 = windows.NewLazySystemDLL("KERNEL32.dll")
	procGetNumberOfConsoleInputEvents = kernel32.NewProc("GetNumberOfConsoleInputEvents")
)

// hConsoleInput (HANDLE), lpNumberOfEvents (DWORD* out)
r1, _, err := procGetNumberOfConsoleInputEvents.Call(
	uintptr(hConsoleInput),
	uintptr(lpNumberOfEvents),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function GetNumberOfConsoleInputEvents(
  hConsoleInput: THandle;   // HANDLE
  lpNumberOfEvents: Pointer   // DWORD* out
): BOOL; stdcall;
  external 'KERNEL32.dll' name 'GetNumberOfConsoleInputEvents';

result := DllCall("KERNEL32\GetNumberOfConsoleInputEvents"
    , "Ptr", hConsoleInput   ; HANDLE
    , "Ptr", lpNumberOfEvents   ; DWORD* out
    , "Int")   ; return: BOOL

●GetNumberOfConsoleInputEvents(hConsoleInput, lpNumberOfEvents) = DLL("KERNEL32.dll", "bool GetNumberOfConsoleInputEvents(void*, void*)")
# 呼び出し: GetNumberOfConsoleInputEvents(hConsoleInput, lpNumberOfEvents)
# hConsoleInput : HANDLE -> "void*"
# lpNumberOfEvents : 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)。